• Complex
  • Title
  • Keyword
  • Abstract
  • Scholars
  • Journal
  • ISSN
  • Conference
成果搜索
High Impact Results & Cited Count Trend for Year Keyword Cloud and Partner Relationship

Query:

学者姓名:李晓

Refining:

Source

Submit Unfold

Co-

Submit Unfold

Language

Submit

Clean All

Sort by:
Default
  • Default
  • Title
  • Year
  • WOS Cited Count
  • Impact factor
  • Ascending
  • Descending
< Page ,Total 27 >
Alkane molecularly imprinted nanofiber membranes used to enhance the diesel degradation process SCIE
期刊论文 | 2024 , 141 (24) | JOURNAL OF APPLIED POLYMER SCIENCE
Abstract&Keyword Cite Version(2)

Abstract :

Combining molecular imprinting technology with electrostatic spinning technology, a molecularly imprinted nanofiber membrane material with memory and recognition of specific imprinted molecules is thus produced. It has the advantages of high efficiency, reusability, easy amplification, and simple operation. In this study, alkane molecularly imprinted nanofibrous membranes are prepared as a carrier for immobilize Bacillus cereus LY-1 for the degradation of diesel in oil-water system. The adsorption capacity of the molecularly imprinted material for diesel oil with n-decyl alcohol as the template molecule reach 120.25 mg g-1, the adsorption capacity of alkane molecularly imprint nanofiber membrane prepared using polyvinyl alcohol (PVA) as the membrane substrate material is 41.37 mg g-1. After 4 days, the immobilized LY-1 cells eliminate roughly 80.7% of the diesel at a starting concentration of 3 g L-1. The results show that imprinted structures in MINM enhance degradation by loaded microorganisms. PVA molecularly imprinted nanofiber membrane before and after bacterial loading used in diesel removal. image

Keyword :

adsorption adsorption electrospinning electrospinning membranes membranes

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Yang, Bo , Ying, Xiaoguang , Zhang, Weiying et al. Alkane molecularly imprinted nanofiber membranes used to enhance the diesel degradation process [J]. | JOURNAL OF APPLIED POLYMER SCIENCE , 2024 , 141 (24) .
MLA Yang, Bo et al. "Alkane molecularly imprinted nanofiber membranes used to enhance the diesel degradation process" . | JOURNAL OF APPLIED POLYMER SCIENCE 141 . 24 (2024) .
APA Yang, Bo , Ying, Xiaoguang , Zhang, Weiying , Li, Xiao . Alkane molecularly imprinted nanofiber membranes used to enhance the diesel degradation process . | JOURNAL OF APPLIED POLYMER SCIENCE , 2024 , 141 (24) .
Export to NoteExpress RIS BibTex

Version :

Alkane molecularly imprinted nanofiber membranes used to enhance the diesel degradation process Scopus
期刊论文 | 2024 , 141 (24) | Journal of Applied Polymer Science
Alkane molecularly imprinted nanofiber membranes used to enhance the diesel degradation process EI
期刊论文 | 2024 , 141 (24) | Journal of Applied Polymer Science
Ecological packaging: Creating sustainable solutions with all-natural biodegradable cellulose materials Scopus
期刊论文 | 2024 , 18 | Giant
Abstract&Keyword Cite Version(1)

Abstract :

Plastics, accumulating globally as microplastics in living organisms, significantly contribute to environmental issues. Current materials like polylactic acid and commercial paper face limitations due to inadequate heat and water resistance, resulting in various practical inconveniences. This study reports a high-strength, water-resistant, recyclable, and naturally degradable pure cellulose food packaging material, which is crafted from bacterial cellulose (BC) and ethyl cellulose (EC) by a straightforward filtration and scratch coating process. The use of the EC ethanol solution eliminates the need for additional binders. Remarkably, the EC-BC pure cellulose material exhibits excellent mechanical properties (tensile strength of 195.3 ± 23.2 MPa), a stability in liquid environments (136.9 ± 24.2 MPa mechanical strength after 30 minutes of immersion in water), recyclability, natural degradability, cost-effectiveness, and non-toxicity. These attributes position binder-free hybrid designs, based on cellulose structures, as a promising solution to address environmental challenges arising from the extensive use of single-use plastics. © 2024 The Author(s)

Keyword :

Disposable plastic substitute Disposable plastic substitute Environment-friendly Environment-friendly Packaging material Packaging material Pure cellulose Pure cellulose Water resistance Water resistance

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Deng, Y. , Wu, S. , Zhu, T. et al. Ecological packaging: Creating sustainable solutions with all-natural biodegradable cellulose materials [J]. | Giant , 2024 , 18 .
MLA Deng, Y. et al. "Ecological packaging: Creating sustainable solutions with all-natural biodegradable cellulose materials" . | Giant 18 (2024) .
APA Deng, Y. , Wu, S. , Zhu, T. , Gou, Y. , Cheng, Y. , Li, X. et al. Ecological packaging: Creating sustainable solutions with all-natural biodegradable cellulose materials . | Giant , 2024 , 18 .
Export to NoteExpress RIS BibTex

Version :

Ecological packaging: Creating sustainable solutions with all-natural biodegradable cellulose materials
期刊论文 | 2024 , 18 | GIANT
Hydrophilic amphibious open-cell macroporous sponge by Hofmeister effect induced nanofibrils SCIE
期刊论文 | 2024 , 12 (27) , 16350-16360 | JOURNAL OF MATERIALS CHEMISTRY A
WoS CC Cited Count: 1
Abstract&Keyword Cite Version(2)

Abstract :

Hydrophilic macroporous sponge has been widely used in solar steam generation, catalysis, biosensing and other fields due to its high water transporting and adsorption ability. However, the synthesis step of hydrophilic sponge usually needs the assistance of a freezing process and toxic chemicals such as chemical crosslinkers or foaming agents. To solve these problems, herein, a novel and facile tactic based on the salting out effect was proposed to prepare hydrophilic amphibious open-cell macroporous sponge from the poly(vinyl alcohol) (PVA) solution. Glycerol, CaCl2 and Na3Cit were successively added into PVA solution. The sol-gel transition would occur due to the salting-out effect of Na3Cit and hydrogen bond crosslinking of glycerol. Finally, the hydrophilic PVA sponge with different shapes and sizes could be easily prepared. Moreover, this hydrophilic wet sponge could be room temperature dried into dry sponge and this dry sponge could be quickly restored to wet sponge after immersing in water due to its ultra-rapid water absorption. The microstructure and mechanical properties of PVA wet and dry sponges were studied. The PVA wet sponge showed excellent mechanical properties with a tensile strength, Young's modulus, and fracture energy of 1.51 +/- 0.01 MPa, 0.44 +/- 0.02 MPa, and 113.2 +/- 1.6 kJ m-2, respectively. The wet sponge prepared in this work has an average porosity of up to 50 mu m, and the pore structure can still be maintained during the conventional room temperature drying process. Moreover, the PVA sponge showed high stability in various aqueous media including acid, alkaline, and salt solutions. This work provided a simple and large-scale method to prepare amphibious open-cell hydrophilic PVA sponge. Hydrophilic macroporous sponge has been widely used in solar steam generation, catalysis, biosensing and other fields due to its high water transporting and adsorption ability.

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Chen, Mengdie , Wang, Yuhao , Yang, Mohan et al. Hydrophilic amphibious open-cell macroporous sponge by Hofmeister effect induced nanofibrils [J]. | JOURNAL OF MATERIALS CHEMISTRY A , 2024 , 12 (27) : 16350-16360 .
MLA Chen, Mengdie et al. "Hydrophilic amphibious open-cell macroporous sponge by Hofmeister effect induced nanofibrils" . | JOURNAL OF MATERIALS CHEMISTRY A 12 . 27 (2024) : 16350-16360 .
APA Chen, Mengdie , Wang, Yuhao , Yang, Mohan , Zhang, Lei , Wang, Kai , Ye, Dezhan et al. Hydrophilic amphibious open-cell macroporous sponge by Hofmeister effect induced nanofibrils . | JOURNAL OF MATERIALS CHEMISTRY A , 2024 , 12 (27) , 16350-16360 .
Export to NoteExpress RIS BibTex

Version :

Hydrophilic amphibious open-cell macroporous sponge by Hofmeister effect induced nanofibrils EI
期刊论文 | 2024 , 12 (27) , 16350-16360 | Journal of Materials Chemistry A
Hydrophilic amphibious open-cell macroporous sponge by Hofmeister effect induced nanofibrils Scopus
期刊论文 | 2024 , 12 (27) , 16350-16360 | Journal of Materials Chemistry A
Performance and application of microbial fuel cells with sodium alginate/agar/activated carbon composite as efficient biocompatible anode SCIE
期刊论文 | 2023 , 140 (26) | JOURNAL OF APPLIED POLYMER SCIENCE
Abstract&Keyword Cite Version(3)

Abstract :

Microbial fuel cells (MFCs) are a potential biotechnology for simultaneous degradation of organic wastewater and power generation. In this paper, a biocompatible composite is constructed around a copper mesh with sodium alginate/agar and activated carbon (CM-SA/AC) and acts as an efficient anode for MFCs after being microbe immobilized. The power performance of the MFC with CM-SA/AC anode is investigated. The results show that the addition of activated carbon is conducive to the immobilization of bacteria on CM-SA/AC anode and fast start-up of MFCs. The power density reaches 1088.6 mW/m(2), which is 2.03 times and 1.75 times that of CM-SA (without activated carbon) anode and carbon felt anode, respectively. In case of a candied wastewater treatment, the MFC with immobilized CM-SA/AC anode exhibits a much higher power density (724.5 mW/m(2)) than that with carbon felt anode (145.0 mW/m(2)), together with a longer stabilization time and a smaller charge-transfer resistance. The total removal rate of chemical oxygen demand (COD) reaches 79.4 +/- 0.65%. The present study will facilitate the development of inexpensive and biocompatible anodes to facilitate the application of MFCs in wastewater treatment.

Keyword :

activated carbon activated carbon biocompatible anode biocompatible anode microbial fuel cell microbial fuel cell sodium alginate sodium alginate wastewater treatment wastewater treatment

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Zhu, Pengcheng , Zhuo, Shumin , Zhang, Weiying et al. Performance and application of microbial fuel cells with sodium alginate/agar/activated carbon composite as efficient biocompatible anode [J]. | JOURNAL OF APPLIED POLYMER SCIENCE , 2023 , 140 (26) .
MLA Zhu, Pengcheng et al. "Performance and application of microbial fuel cells with sodium alginate/agar/activated carbon composite as efficient biocompatible anode" . | JOURNAL OF APPLIED POLYMER SCIENCE 140 . 26 (2023) .
APA Zhu, Pengcheng , Zhuo, Shumin , Zhang, Weiying , Ying, Xiaoguang , Huang, Jianying , Li, Xiao . Performance and application of microbial fuel cells with sodium alginate/agar/activated carbon composite as efficient biocompatible anode . | JOURNAL OF APPLIED POLYMER SCIENCE , 2023 , 140 (26) .
Export to NoteExpress RIS BibTex

Version :

Performance and application of microbial fuel cells with sodium alginate/agar/activated carbon composite as efficient biocompatible anode
期刊论文 | 2023 , 140 (26) , n/a-n/a | Journal of Applied Polymer Science
Performance and application of microbial fuel cells with sodium alginate/agar/activated carbon composite as efficient biocompatible anode EI
期刊论文 | 2023 , 140 (26) | Journal of Applied Polymer Science
Performance and application of microbial fuel cells with sodium alginate/agar/activated carbon composite as efficient biocompatible anode Scopus
期刊论文 | 2023 , 140 (26) | Journal of Applied Polymer Science
Highly effective transfer of micro-LED pixels to the intermediate and rigid substrate with weak and tunable adhesion by thiol modification SCIE
期刊论文 | 2023 , 15 (9) , 4420-4428 | NANOSCALE
WoS CC Cited Count: 3
Abstract&Keyword Cite Version(2)

Abstract :

Based on transfer printing technology, micro-LED pixels can be transferred to different types and sizes of driving substrates to realize displays with different application scenarios. To achieve a successful transfer, GaN-based micro-LEDs first need to be separated from the original epitaxial substrate. Here, micro-LED pixels (each size 25 mu m x 30 mu m) on the sapphire substrate were transferred to a flexible semiconductor wafer processing (SWP) tape that is strongly sticky by conventional laser lift-off (LLO) techniques. The pixels on the SWP tape were then transferred by using a sacrificial layer of non-crosslinked oligomeric polystyrene (PS) film onto the intermediate and rigid substrate (IRS) with weak and tunable adhesion by thiol (-SH) modification. The electrode of the micro-LED is Au metal, which forms Au-S bonds with the surface of the IRS to fix the pixels. The rigid substrate helps ensure that the pixel spacing is almost unchanged during the stamp transfer process, and the weak and tunable adhesion facilitates the pixels being picked up by the stamp. The experimental results demonstrate that the pixels can be efficiently transferred to the IRS by LLO and sacrificial layer-assistance, which will provide the possibility of achieving the further transfer of pixels to different types and sizes of driving substrates by a suitable transfer stamp. The transfer process details are discussed, which can provide insights into the transfer of micro-nano devices through polymer sacrificial layers.

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Pan, Kui , Sun, Jie , Lin, Chang et al. Highly effective transfer of micro-LED pixels to the intermediate and rigid substrate with weak and tunable adhesion by thiol modification [J]. | NANOSCALE , 2023 , 15 (9) : 4420-4428 .
MLA Pan, Kui et al. "Highly effective transfer of micro-LED pixels to the intermediate and rigid substrate with weak and tunable adhesion by thiol modification" . | NANOSCALE 15 . 9 (2023) : 4420-4428 .
APA Pan, Kui , Sun, Jie , Lin, Chang , Deng, Liying , Li, Xiao , Mao, Zuodong et al. Highly effective transfer of micro-LED pixels to the intermediate and rigid substrate with weak and tunable adhesion by thiol modification . | NANOSCALE , 2023 , 15 (9) , 4420-4428 .
Export to NoteExpress RIS BibTex

Version :

Highly effective transfer of micro-LED pixels to the intermediate and rigid substrate with weak and tunable adhesion by thiol modification Scopus
期刊论文 | 2023 , 15 (9) , 4420-4428 | Nanoscale
Highly effective transfer of micro-LED pixels to the intermediate and rigid substrate with weak and tunable adhesion by thiol modification EI
期刊论文 | 2023 , 15 (9) , 4420-4428 | Nanoscale
Advances in particulate matter filtration: Materials, performance, and application SCIE CSCD
期刊论文 | 2023 , 8 (3) , 673-697 | GREEN ENERGY & ENVIRONMENT
WoS CC Cited Count: 84
Abstract&Keyword Cite Version(2)

Abstract :

Air-borne pollutants in particulate matter (PM) form, produced either physically during industrial processes or certain biological routes, have posed a great threat to human health. Particularly during the current COVID-19 pandemic, effective filtration of the virus is an urgent matter worldwide. In this review, we first introduce some fundamentals about PM, including its source and classification, filtration mechanisms, and evaluation parameters. Advanced filtration materials and their functions are then summarized, among which polymers and MOFs are discussed in detail together with their antibacterial performance. The discussion on the application is divided into end-of-pipe treatment and source control. Finally, we conclude this review with our prospective view on future research in this area. (c) 2022 Institute of Process Engineering, Chinese Academy of Sciences. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Keyword :

Air filtration Air filtration COVID-19 COVID-19 End -of -pipe treatment End -of -pipe treatment PM capture PM capture Source control Source control

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Ji, Xuzheng , Huang, Jianying , Teng, Lin et al. Advances in particulate matter filtration: Materials, performance, and application [J]. | GREEN ENERGY & ENVIRONMENT , 2023 , 8 (3) : 673-697 .
MLA Ji, Xuzheng et al. "Advances in particulate matter filtration: Materials, performance, and application" . | GREEN ENERGY & ENVIRONMENT 8 . 3 (2023) : 673-697 .
APA Ji, Xuzheng , Huang, Jianying , Teng, Lin , Li, Shuhui , Li, Xiao , Cai, Weilong et al. Advances in particulate matter filtration: Materials, performance, and application . | GREEN ENERGY & ENVIRONMENT , 2023 , 8 (3) , 673-697 .
Export to NoteExpress RIS BibTex

Version :

Advances in particulate matter filtration: Materials, performance, and application EI CSCD
期刊论文 | 2023 , 8 (3) , 673-697 | Green Energy and Environment
Advances in particulate matter filtration: Materials, performance, and application Scopus CSCD
期刊论文 | 2023 , 8 (3) , 673-697 | Green Energy and Environment
金属碳化钨与液相染料光敏剂协同促进光催化制氢 CSCD PKU
期刊论文 | 2023 , 39 (4) , 58-66 | 物理化学学报
Abstract&Keyword Cite

Abstract :

使用WC作为光催化材料通过水还原制氢很常见,但它通常需要与有效的光吸收剂协同才能产生有意义的光催化活性.这可归因于WC的窄带隙,导致水的氧化还原能力不足.有趣的是,我们的研究通过一种新型固液光催化体系克服了这种限制,该体系将裸WC光催化剂与液相光敏赤藓红B(ErB)相结合.这种概念的提出消除了将WC耦合到光吸收半导体的需要,这通常需要繁琐的程序来获得适当的功能化光催化复合材料.实验结果表明,在可见光(λ=520 nm)照射下,所提出的固液光催化体系产生了显著的氢气,然而,只有在三乙醇胺(TEOA)作为牺牲试剂的共同存在下.显然,仅加入WC和ErB的空白实验在典型的光催化条件下表现出几乎为零的光催化活性和无法测量的H2生成.在光照TEOA溶液中仅存在ErB或WC的光反应中也观察到类似的活性.这些空白实验证实了所有三种成分的重要性,即WC、ErB和TEOA,它们分别作为光催化剂、光吸收剂和牺牲试剂,在我们提出的体系中产生有意义的H2.值得注意的是,在我们的调查中系统地研究了三个关键参数,即pH值、ErB和WC浓度的影响.发现H2生成的最佳pH值为8,稍微改变到更碱性或酸性条件会降低体系的光催化活性.在pH<8时,部分TEOA将发生部分质子化,从而失去其在光催化体系中作为牺牲试剂的活性.当pH值增加到超过8时,反应介质中的低质子浓度也会扰乱热力学驱动,导致体系产生的H2受到抑制.同时,发现最佳ErB浓度为1 mmol·L-1,从最佳点降低或增加ErB浓度均不利于H2的产生.ErB浓度较低的体系(<1 mmol·L-1),在吸光上不足以满足体系的礼用,而较高浓度(>1 mmol·L-1ErB)的体系,会引起明显的散射效应,组织光穿透反应溶液.相反,WC的浓度与H2的生成呈稳定的正相关,在加入12mmol·L-1WC的体系中,H2的生成量最高.在最佳条件下,成功生成了66μmol·h-1 H2,AQE略高为6.6%在520 nm处,这归因于ErB-TEOA-WC在所提出的体系中的协同作用.光电化学评估证实了ErB、TEOA和WC之间的相互作用,从而降低了阻抗,同时提高了体系中的电荷利用率.因此,还记录到了极好的H2转换数(TON)为15,在至少20 h的连续反应中具有难以察觉的活性衰减.对于机理,密度泛函理论(DFT)计算进一步证实了W和C空位在H2生成中的主要作用,这归因于他们提供的产品解吸,在光反应期间提高转化速率.从这些发现中得出结论,我们提出的新型WC/ErB/TEOA体系在液固光催化体系提供了一种更容易从水中产生H2的策略,这为金属碳化物光催化剂避免选择繁琐的光吸收剂耦合.

Keyword :

WC WC 三乙醇胺 三乙醇胺 光催化 光催化 制氢 制氢 液相 液相 赤藓红B 赤藓红B

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 雷永刚 , 赵天宇 , 黄锦鸿 et al. 金属碳化钨与液相染料光敏剂协同促进光催化制氢 [J]. | 物理化学学报 , 2023 , 39 (4) : 58-66 .
MLA 雷永刚 et al. "金属碳化钨与液相染料光敏剂协同促进光催化制氢" . | 物理化学学报 39 . 4 (2023) : 58-66 .
APA 雷永刚 , 赵天宇 , 黄锦鸿 , 张颖贞 , 臧雪瑞 , 李晓 et al. 金属碳化钨与液相染料光敏剂协同促进光催化制氢 . | 物理化学学报 , 2023 , 39 (4) , 58-66 .
Export to NoteExpress RIS BibTex

Version :

金属碳化钨与液相染料光敏剂协同促进光催化制氢(英文) CSCD PKU
期刊论文 | 2023 , 39 (04) , 87-95 | 物理化学学报
Abstract&Keyword Cite Version(1)

Abstract :

使用WC作为光催化材料通过水还原制氢很常见,但它通常需要与有效的光吸收剂协同才能产生有意义的光催化活性。这可归因于WC的窄带隙,导致水的氧化还原能力不足。有趣的是,我们的研究通过一种新型固液光催化体系克服了这种限制,该体系将裸WC光催化剂与液相光敏赤藓红B(Er B)相结合。这种概念的提出消除了将WC耦合到光吸收半导体的需要,这通常需要繁琐的程序来获得适当的功能化光催化复合材料。实验结果表明,在可见光(λ=520 nm)照射下,所提出的固液光催化体系产生了显著的氢气,然而,只有在三乙醇胺(TEOA)作为牺牲试剂的共同存在下。显然,仅加入WC和Er B的空白实验在典型的光催化条件下表现出几乎为零的光催化活性和无法测量的H_2生成。在光照TEOA溶液中仅存在Er B或WC的光反应中也观察到类似的活性。这些空白实验证实了所有三种成分的重要性,即WC、Er B和TEOA,它们分别作为光催化剂、光吸收剂和牺牲试剂,在我们提出的体系中产生有意义的H_2。值得注意的是,在我们的调查中系统地研究了三个关键参数,即p H值、Er B和WC浓度的影响。发现H_2生成的最佳p H值为8,稍微改变到更碱性或酸性条件会降低体系的光催化活性。在p H <8时,部分TEOA将发生部分质子化,从而失去其在光催化体系中作为牺牲试剂的活性。当p H值增加到超过8时,反应介质中的低质子浓度也会扰乱热力学驱动,导致体系产生的H_2受到抑制。同时,发现最佳Er B浓度为1mmol·L~(-1),从最佳点降低或增加Er B浓度均不利于H_2的产生。Er B浓度较低的体系(<1mmol·L~(-1)),在吸光上不足以满足体系的礼用,而较高浓度(> 1 mmol·L~(-1) Er B)的体系,会引起明显的散射效应,组织光穿透反应溶液。相反,WC的浓度与H_2的生成呈稳定的正相关,在加入12 mmol·L~(-1) WC的体系中,H_2的生成量最高。在最佳条件下,成功生成了66μmol·h~(-1) H_2,AQE略高为6.6%在520 nm处,这归因于Er B-TEOA-WC在所提出的体系中的协同作用。光电化学评估证实了Er B、TEOA和WC之间的相互作用,从而降低了阻抗,同时提高了体系中的电荷利用率。因此,还记录到了极好的H_2转换数(TON)为15,在至少20 h的连续反应中具有难以察觉的活性衰减。对于机理,密度泛函理论(DFT)计算进一步证实了W和C空位在H_2生成中的主要作用,这归因于他们提供的产品解吸,在光反应期间提高转化速率。从这些发现中得出结论,我们提出的新型WC/Er B/TEOA体系在液固光催化体系提供了一种更容易从水中产生H_2的策略,这为金属碳化物光催化剂避免选择繁琐的光吸收剂耦合。

Keyword :

WC WC 三乙醇胺 三乙醇胺 光催化 光催化 制氢 制氢 液相 液相 赤藓红B 赤藓红B

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 雷永刚 , 赵天宇 , 黄锦鸿 et al. 金属碳化钨与液相染料光敏剂协同促进光催化制氢(英文) [J]. | 物理化学学报 , 2023 , 39 (04) : 87-95 .
MLA 雷永刚 et al. "金属碳化钨与液相染料光敏剂协同促进光催化制氢(英文)" . | 物理化学学报 39 . 04 (2023) : 87-95 .
APA 雷永刚 , 赵天宇 , 黄锦鸿 , 张颖贞 , 臧雪瑞 , 李晓 et al. 金属碳化钨与液相染料光敏剂协同促进光催化制氢(英文) . | 物理化学学报 , 2023 , 39 (04) , 87-95 .
Export to NoteExpress RIS BibTex

Version :

金属碳化钨与液相染料光敏剂协同促进光催化制氢(英文) CSCD PKU
期刊论文 | 2023 , 39 (04) , 87-95 | 物理化学学报
Superhydrophobic polyurethane sponge for efficient water-oil emulsion separation and rapid solar-assisted highly viscous crude oil adsorption and recovery SCIE
期刊论文 | 2023 , 445 | JOURNAL OF HAZARDOUS MATERIALS
WoS CC Cited Count: 80
Abstract&Keyword Cite Version(2)

Abstract :

Rapid and efficient cleaning of oily wastewater and high viscosity crude oil spills is still a global challenge. Conventional three-dimensional porous adsorbents are ineffective for oil-water separation in harsh environment and are restricted to the low fluidity of high viscosity crude oil at room temperature. Increasing temperature can enormously improve the fluidity of viscous crude oil. Herein, the polydimethylsiloxane (PDMS) /carbon black (CB)-modified polyurethane sponge (PU) were prepared by a simple one-step dip-coating method. PDMS/ CB@PU (PCPU) exhibits high adsorption capacity to various oils and organic liquid (28.5-68.7 g/g), strong mechanical properties (500 cycles at 50%), outstanding reusability (100 cycles of adsorption and desorption) and excellent environmental stability due to the special PDMS/CB coating. The maximum surface temperature of PCPU sponge can reach 84.7 celcius under 1 sunlight irradiation. Therefore, the PCPU sponge can rapidly heat and enhance the fluidity of viscous crude oil, significantly speeding up the viscous oil recovery process with the maximum adsorption capacity of 44.7 g/g. In addition, the PCPU sponge can also combine with the vacuum pump to realize the continuous and rapid repair of viscous oil spills from the seawater surface. In consideration of its simple preparation, cost-effectiveness and high oil absorption ability, this solar-assisted self-heating adsorbent provides a new direction for large-scale cleanup and recycling of viscous crude oil spill on the seawater surface.

Keyword :

Oil Oil One-step dip -coating method One-step dip -coating method Photothermal absorbent Photothermal absorbent Superhydrophobic Superhydrophobic Viscosity crude oil spills Viscosity crude oil spills water separation water separation

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Chen, Jiajun , Sun, Ming , Ni, Yimeng et al. Superhydrophobic polyurethane sponge for efficient water-oil emulsion separation and rapid solar-assisted highly viscous crude oil adsorption and recovery [J]. | JOURNAL OF HAZARDOUS MATERIALS , 2023 , 445 .
MLA Chen, Jiajun et al. "Superhydrophobic polyurethane sponge for efficient water-oil emulsion separation and rapid solar-assisted highly viscous crude oil adsorption and recovery" . | JOURNAL OF HAZARDOUS MATERIALS 445 (2023) .
APA Chen, Jiajun , Sun, Ming , Ni, Yimeng , Zhu, Tianxue , Huang, Jianying , Li, Xiao et al. Superhydrophobic polyurethane sponge for efficient water-oil emulsion separation and rapid solar-assisted highly viscous crude oil adsorption and recovery . | JOURNAL OF HAZARDOUS MATERIALS , 2023 , 445 .
Export to NoteExpress RIS BibTex

Version :

Superhydrophobic polyurethane sponge for efficient water-oil emulsion separation and rapid solar-assisted highly viscous crude oil adsorption and recovery EI
期刊论文 | 2023 , 445 | Journal of Hazardous Materials
Superhydrophobic polyurethane sponge for efficient water-oil emulsion separation and rapid solar-assisted highly viscous crude oil adsorption and recovery Scopus
期刊论文 | 2023 , 445 | Journal of Hazardous Materials
Metallic Tungsten Carbide Coupled with Liquid-Phase Dye Photosensitizer for Efficient Photocatalytic Hydrogen Production SCIE CSCD PKU
期刊论文 | 2023 , 39 (4) | ACTA PHYSICO-CHIMICA SINICA
WoS CC Cited Count: 15
Abstract&Keyword Cite

Abstract :

Tungsten carbide (WC) is commonly used as a photocatalytic material for hydrogen production via water reduction. However, it is often combined with an effective photoabsorber to provide sufficient photoactivity. This is attributed to the narrow band gap of WC, which leads to an inadequate redox capability for water reduction. Notably, this limitation was overcome using a novel solid-liquid photocatalytic system that compliments bare WC photocatalysts with liquid-phase photosensitizing erythrosine B (ErB). The proposed concept eliminates the need to couple WC with photoabsorbing semiconductors, which often requires tedious procedures for the proper functionalization of photocatalytic composites. The experimental results indicated significant hydrogen production from the proposed solid-liquid photocatalytic system under irradiation with visible light (lambda=520 nm); however, only in the presence of triethanolamine (TEOA) as a sacrificial reagent. Evidently, a blank experiment with only WC and ErB under typical photoreaction conditions exhibited nearly zero photoactivity and the production of H2 was undetected. Similarly, nonactivity was observed for the photoreaction in the presence of ErB or WC in the irradiated TEOA solution. These blank experiments confirmed the significance of all three components, namely WC, ErB, and TEOA, which functioned as the photocatalyst, photoabsorber, and sacrificial reagent, respectively, for suitable H2 production in the proposed system. The effects of three critical parameters, such as pH, ErB concentration, and WC concentration, were systematically investigated. The optimum pH for H2 production was 8, with a slight variation to more basic or acidic conditions reducing the photoactivity of the system. At pH < 8, part of TEOA undergoes partial protonation, thereby losing its activity as a sacrificial reagent in the photocatalytic system. As the pH increased to > 8, the low proton concentration in the reaction medium perturbed the thermodynamic drive, leading to suppressed H2 production. The optimum ErB concentration was 1 mmol center dot L-1, and decreasing or increasing the ErB concentration from the optimal point was detrimental to H2 production. The diluted system (ErB concentration < 1 mmol center dot L-1) provided insufficient sensitizing agents, whereas the concentrated system (> 1 mmol center dot L-1 ErB) induced significant scattering effects that prevent light from penetrating into the reactive liquid phase. Conversely, the WC concentration exhibited a positive correlation with H2 production in a steady manner, and the highest H2 production measured by the system was at a WC concentration of 12 mmol center dot L-1. Under optimum conditions, 66 mu mol center dot h-1 of H2 was successfully produced, with a slightly higher apparent quantum efficiency (AQE) of 6.6% at 520 nm, which was attributed to the synergism of ErB-TEOA-WC in the proposed system. The photoelectrochemical evaluation confirmed the positive interactions between ErB, TEOA, and WC, which caused reduced impedance while improving charge utilization in the system. Consequently, an excellent H2 turnover number (TON) of 15 was achieved with negligible activity decay for at least 20 h of reaction. Density functional theory (DFT) calculations confirmed the major roles of W- and C-vacant sites in H2 production, which were attributed to their enhanced product desorption that facilitates high turnover rates during photoreactions. In conclusion, the proposed novel liquid-solid photocatalytic WC/ErB/TEOA system provides more facile photo-derived H2 energy from water, which circumvents the tedious photoabsorber coupling of metal carbide photocatalysts.

Keyword :

Erythrosine B Erythrosine B H2 production H2 production Liquid-phase Liquid-phase Photocatalysis Photocatalysis Triethanolamine Triethanolamine WC WC

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Lei, Yonggang , Zhao, Tianyu , Ng, Kim Hoong et al. Metallic Tungsten Carbide Coupled with Liquid-Phase Dye Photosensitizer for Efficient Photocatalytic Hydrogen Production [J]. | ACTA PHYSICO-CHIMICA SINICA , 2023 , 39 (4) .
MLA Lei, Yonggang et al. "Metallic Tungsten Carbide Coupled with Liquid-Phase Dye Photosensitizer for Efficient Photocatalytic Hydrogen Production" . | ACTA PHYSICO-CHIMICA SINICA 39 . 4 (2023) .
APA Lei, Yonggang , Zhao, Tianyu , Ng, Kim Hoong , Zhang, Yingzhen , Zang, Xuerui , Li, Xiao et al. Metallic Tungsten Carbide Coupled with Liquid-Phase Dye Photosensitizer for Efficient Photocatalytic Hydrogen Production . | ACTA PHYSICO-CHIMICA SINICA , 2023 , 39 (4) .
Export to NoteExpress RIS BibTex

Version :

10| 20| 50 per page
< Page ,Total 27 >

Export

Results:

Selected

to

Format:
Online/Total:124/11141665
Address:FZU Library(No.2 Xuyuan Road, Fuzhou, Fujian, PRC Post Code:350116) Contact Us:0591-22865326
Copyright:FZU Library Technical Support:Beijing Aegean Software Co., Ltd. 闽ICP备05005463号-1