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学者姓名:谢增鸿
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To improve the photocatalytic performance of carbon nitride (g-C3N4), a flower-shaped COCN/ZIS composite was synthesized by growing ZnIn2S4 (ZIS) onto structurally defective g-C3N4 (COCN) nanosheets. The experimental results indicate that the prepared photocatalyst has excellent photocatalytic performance for the degradation of methylene blue (MB), with an apparent rate constant of 0.0661 min(-1), which is approximately 6.89, 6.06 and 7.39 times greater than that of g-C3N4 (0.0096 min(-1)), COCN (0.01091 min(-1)) and ZIS (0.00895 min(-1)), separately. The improvement in the photocatalytic performance of COCN/ZIS can be attributed to the defect structure of COCN and the well-matched relationship between COCN and ZIS, both of which result in valid photoinduced charge separation and migration. This has also been confirmed by the synergy coefficient (3.33). Furthermore, the total organic carbon content (TOC) removal rates of MB and wastewater by the 60-COCN/ZIS composite were 85.96 % and 75.32 %, respectively, suggesting that the resultant catalyst has potential application in the photodegradation treatment of MB. Finally, the capture experiments and electron paramagnetic resonance analysis show that center dot OH, center dot O-2(-) and h(+) species are generated during the process, among which center dot OH plays a great part in the photodegradation of MB by the COCN/ZIS compound.
Keyword :
g-C3N4 g-C3N4 Photocatalytic degradation Photocatalytic degradation Structural defects Structural defects ZnIn2S4 ZnIn2S4
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GB/T 7714 | Li, Yangqing , Chen, Yan , Lyu, Haixia et al. Construction of a flower-shaped g-C3N4/ZnIn2S4 composite with heterogeneous structural defects for highly efficient photocatalytic degradation of pollutants [J]. | JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY , 2024 , 457 . |
MLA | Li, Yangqing et al. "Construction of a flower-shaped g-C3N4/ZnIn2S4 composite with heterogeneous structural defects for highly efficient photocatalytic degradation of pollutants" . | JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY 457 (2024) . |
APA | Li, Yangqing , Chen, Yan , Lyu, Haixia , Xie, Zenghong . Construction of a flower-shaped g-C3N4/ZnIn2S4 composite with heterogeneous structural defects for highly efficient photocatalytic degradation of pollutants . | JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY , 2024 , 457 . |
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Three dimensions (3D) flower-shaped g-C3N4/MoS2 composite was prepared by immobilizing molybdenum di-sulfide (MoS2) on carbon nitride (C3N4) with structural defects by in-situ hydrothermal assay. The morphological structure and photochemical properties of the obtained catalysts were characterized by SEM, TEM, EDS, FTIR, XRD and XPS. Using methylene blue (MB) as the target pollutant, the photocatalytic performance cyclic stability of g-C3N4/MoS2 composite were studied under simulated sunlight. The results showed that the prepared catalyst could remove 98 % of MB within 60 min and still reached 96.4 % after 5 cycles with good stability and regeneration. Its apparent rate constant was 0.0523 min-1, which was 11.5, 8.2 and 13.9 times higher than those of g-C3N4 (0.00453 min-1), C3N4 with structural defects (0.00635 min-1) and MoS2 (0.00377 min-1), indicating that the synergistic effect of structural defects, heterojunctions and 3D structure has achieved efficient degradation of MB. Furthermore, the photocatalytic mechanism of g-C3N4/MoS2 composite was proposed by combining free radical capture experiment and electron paramagnetic resonance (EPR) spectroscopy and the results showed that that center dot OH and center dot O2- played a primary role in the catalytic degradation.
Keyword :
3D heterojunction structure 3D heterojunction structure Dye Dye g-C 3 N 4 /MoS 2 composites g-C 3 N 4 /MoS 2 composites Photocatalysis Photocatalysis
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GB/T 7714 | Lyu, Haixia , Zhu, Wenzhang , Chen, Kaixuan et al. 3D flower-shaped g-C3N4/MoS2 composite with structure defect for synergistic degradation of dyes [J]. | JOURNAL OF WATER PROCESS ENGINEERING , 2023 , 57 . |
MLA | Lyu, Haixia et al. "3D flower-shaped g-C3N4/MoS2 composite with structure defect for synergistic degradation of dyes" . | JOURNAL OF WATER PROCESS ENGINEERING 57 (2023) . |
APA | Lyu, Haixia , Zhu, Wenzhang , Chen, Kaixuan , Gao, Jun , Xie, Zenghong . 3D flower-shaped g-C3N4/MoS2 composite with structure defect for synergistic degradation of dyes . | JOURNAL OF WATER PROCESS ENGINEERING , 2023 , 57 . |
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The AgNPs@NCN composite was prepared by loading silver nanoparticles (AgNPs) onto the surface of carbon nitride (g-C3N4) with nitrogen-vacancy and cyanide defect and used for the synergistic degradation of methylene blue (MB) by the structural defect of g-C3N4, the surface plasmon resonance of AgNPs and Schottky barrier formed between them. The morphology, structure, chemical composition and photoelectrochemical properties were characterized by SEM, TEM, FTIR, XRD, XPS, BET and UV-Vis. The effects of different loads of AgNPs on photocatalytic performance were investigated and the results showed 10%AgNPs@NCN exhibited good photodegradation performance. The maximum degradation efficiency of MB by 10%AgNPs@NCN reached 100% with the rate constant of 0.05443 min-1, which was 9.15 and 6.89 times higher than those of g-C3N4 (0.00595 min-1) and NCN (0.0079 min-1), respectively. The mineralization degree of organic pollutants was evaluated by total organic carbon (TOC) and the results showed that the TOC removals of 10%AgNPs@NCN photocatalytic reaction were 77% and 93% for MB and wastewater, respectively. After four cycles of photocatalytic degradation experiments, the degradation rate of MB was still more than 98.2% and there was no significant change in the characteristic stretching of the catalyst, indicating that the prepared photocatalyst had good stability and reusability.
Keyword :
Carbon nitride Carbon nitride Methylene blue Methylene blue Photocatalytic degradation Photocatalytic degradation Silver nanoparticles Silver nanoparticles Structural defect Structural defect
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GB/T 7714 | Guo, Mengfan , Gao, Jun , Lyu, Haixia et al. Synergistic enhancement of photocatalytic degradation of dyes by structural defects and silver nanoparticles [J]. | DYES AND PIGMENTS , 2023 , 220 . |
MLA | Guo, Mengfan et al. "Synergistic enhancement of photocatalytic degradation of dyes by structural defects and silver nanoparticles" . | DYES AND PIGMENTS 220 (2023) . |
APA | Guo, Mengfan , Gao, Jun , Lyu, Haixia , Xie, Zenghong . Synergistic enhancement of photocatalytic degradation of dyes by structural defects and silver nanoparticles . | DYES AND PIGMENTS , 2023 , 220 . |
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本发明具体涉及了一条抗大田软海绵酸的单链抗体的氨基酸序列及其表达载体。所述氨基酸序列包括:一重链可变区的氨基酸序列,其如SEQ ID No.1所示;一轻链可变区的氨基酸序列,其如SEQ ID No.2所示。编码该重链可变区的核苷酸序列如SEQ ID No.3所示,编码该轻链可变区的核苷酸序列如SEQ ID No.4所示。所述单链抗体的核苷酸序列与带有组氨酸标签麦芽糖结合蛋白的pET28a‑MBP‑T7‑6×His表达载体形成了可溶性重组质粒。
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GB/T 7714 | 林旭聪 , 田印琪 , 袁琳 et al. 一种抗大田软海绵酸单链抗体的氨基酸序列及其表达载体 : CN202111395189.5[P]. | 2021-11-23 00:00:00 . |
MLA | 林旭聪 et al. "一种抗大田软海绵酸单链抗体的氨基酸序列及其表达载体" : CN202111395189.5. | 2021-11-23 00:00:00 . |
APA | 林旭聪 , 田印琪 , 袁琳 , 谢增鸿 . 一种抗大田软海绵酸单链抗体的氨基酸序列及其表达载体 : CN202111395189.5. | 2021-11-23 00:00:00 . |
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本发明具体提供了一种抗四溴双酚A‑双(2‑羟乙基)醚单链抗体的氨基酸序列及其表达载体。所述氨基酸序列包括:一重链可变区的氨基酸序列,其如SEQ ID No.1所示;一轻链可变区的氨基酸序列,其如SEQ ID No.2所示。编码该重链可变区的核苷酸序列如SEQ ID No.3所示,编码该轻链可变区的核苷酸序列如SEQ ID No.4所示。将所述的单链抗体的核苷序列克隆到带有组氨酸标签麦芽糖结合蛋白的pET28a‑MBP‑T7‑6×His表达载体中,可实现高可溶性表达。
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GB/T 7714 | 林旭聪 , 吴星霖 , 何幼芬 et al. 一种抗四溴双酚A-双(2-羟乙基)醚单链抗体的氨基酸序列及其表达载体 : CN202111394509.5[P]. | 2021-11-23 00:00:00 . |
MLA | 林旭聪 et al. "一种抗四溴双酚A-双(2-羟乙基)醚单链抗体的氨基酸序列及其表达载体" : CN202111394509.5. | 2021-11-23 00:00:00 . |
APA | 林旭聪 , 吴星霖 , 何幼芬 , 谢增鸿 . 一种抗四溴双酚A-双(2-羟乙基)醚单链抗体的氨基酸序列及其表达载体 : CN202111394509.5. | 2021-11-23 00:00:00 . |
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本发明公开了一种基于适配体有序排列的金磁纳米探针及其在大田软海绵酸检测(OA)中的应用。所述的金磁纳米探针是由表面有序排列着核酸序列的纳米金球形核酸与纳米磁珠结合组成;所述的核酸序列为5’端带有腺嘌呤碱基聚合链的适配体与5’端带有荧光标记的DNA互补链形成。所述的金磁纳米探针由于表面修饰高密度负载由有序排列适配体,特异识别效率高、目标物分离简便,可与大田软海绵酸反应释放出荧光标记的DNA互补链,应用激光诱导荧光检测,从而实现痕量OA高灵敏分析。
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GB/T 7714 | 林旭聪 , 黄洋 , 童诗谦 et al. 一种基于适配体有序排列的金磁纳米探针及其在大田软海绵酸检测中的应用 : CN202210311161.7[P]. | 2022-03-28 00:00:00 . |
MLA | 林旭聪 et al. "一种基于适配体有序排列的金磁纳米探针及其在大田软海绵酸检测中的应用" : CN202210311161.7. | 2022-03-28 00:00:00 . |
APA | 林旭聪 , 黄洋 , 童诗谦 , 谢增鸿 . 一种基于适配体有序排列的金磁纳米探针及其在大田软海绵酸检测中的应用 : CN202210311161.7. | 2022-03-28 00:00:00 . |
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A novel aptamer-functionalized metal-organic framework nanofibrous composite (viz. PAN/UiO@UiO(2)-N-3-aptamer) with a high aptamer coverage density was proposed based on the electrospinning and seeded growth method, and used for specific affinity recognition of trace Microcystin-LR (MC-LR). Heterobifunctional ligand was used to modify the metal-organic framework nanoparticles (MOF NPs) surface, which could passivate the MOF surface with respect to unmodified DNA, followed by coupling massive aptamers on MOF of the solid-phase microextraction (SPME) fiber using click chemistry. Characterizations including morphology, spectra analysis, mechanical stability, binding capacity and specificity were fulfilled. Applied to the analysis of MC-LR, the good selective and sensitive recognition were obtained with the detection limit as low as 0.003 ng/mL, which was better than most non-specific SPME or solid-phase extraction (SPE) protocols. The stability and reproducibility were acceptable, and the intra-day, inter-day and column-to-column relative standard deviations (RSDs) for the recovery of MC-LR were gained in the range from 2.5% to 14.3%, respectively. Satisfactory recoveries of MC-LR in environmental water samples were measured as 96.3 +/- 4.7% - 98.9 +/- 2.7% (n = 3) in tap water, 94.4 +/- 2.5% 96.1 +/- 3.5% (n = 3) in pond water, and 97.0 +/- 2.1% - 97.9 +/- 3.1% (n = 3) in river water, respectively. This work demonstrated that the electrospun nanofibrous composite with massive aptamers would be a better alternative for ultra-trace MC-LR detection with good selectivity, matrix-resistance ability and high resolution.
Keyword :
Aptamer Aptamer Click chemistry Click chemistry Electrospinning Electrospinning Microcystin-LR Microcystin-LR Selective extraction Selective extraction
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GB/T 7714 | Xu, Zhiqun , Zhang, Zhexiang , She, Zongkang et al. Aptamer-functionalized metal-organic framework-coated nanofibers with multi-affinity sites for highly sensitive, selective recognition of ultra-trace microcystin-LR [J]. | TALANTA , 2022 , 236 . |
MLA | Xu, Zhiqun et al. "Aptamer-functionalized metal-organic framework-coated nanofibers with multi-affinity sites for highly sensitive, selective recognition of ultra-trace microcystin-LR" . | TALANTA 236 (2022) . |
APA | Xu, Zhiqun , Zhang, Zhexiang , She, Zongkang , Lin, Chenchen , Lin, Xucong , Xie, Zenghong . Aptamer-functionalized metal-organic framework-coated nanofibers with multi-affinity sites for highly sensitive, selective recognition of ultra-trace microcystin-LR . | TALANTA , 2022 , 236 . |
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A novel hybrid material (ZIF-7-NH2@MIP) combining high adsorption capacity of amino-functional zeolitic imidazolate framework and specific recognition ability of dual-template molecular imprinted polymer was synthesized. The prepared ZIF-7-NH2@MIP was characterized by a range of instrumental techniques and combined with high performance liquid chromatography for the detection of four phthalate esters. The limits of detection of the four PAEs were below the maximum residue limit of GB 3838-2002 in China, ranging from 0.04 to 0.08 mu g L-1. The recoveries of the three real samples of mineral water, carbonated drinks and pulpy juices spiked at 10 mu g L-1 were 88.68-98.58% and the relative standard deviations was 1.19-3.40%. The above results showed that the obtained absorbent exhibited many advantages for extracting analytes in aqueous solution especially complex environment due to the combination of the superior hydrothermal and large specific surface area of the amino-functionalized ZIF-7-NH2 and the specific identification of the dual-template molecular imprinted polymer.
Keyword :
Dual-template imprinting Dual-template imprinting High-performance liquid chromatography High-performance liquid chromatography Metal-organic frameworks Metal-organic frameworks Phthalic acid esters Phthalic acid esters Solid-phase extraction Solid-phase extraction
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GB/T 7714 | Zhang, Xuecheng , Gao, Jun , Chu, Qinghua et al. Specific recognition and determination of trace phthalic acid esters by molecularly imprinted polymer based on metal organic framework [J]. | ANALYTICA CHIMICA ACTA , 2022 , 1227 . |
MLA | Zhang, Xuecheng et al. "Specific recognition and determination of trace phthalic acid esters by molecularly imprinted polymer based on metal organic framework" . | ANALYTICA CHIMICA ACTA 1227 (2022) . |
APA | Zhang, Xuecheng , Gao, Jun , Chu, Qinghua , Lyu, Haixia , Xie, Zenghong . Specific recognition and determination of trace phthalic acid esters by molecularly imprinted polymer based on metal organic framework . | ANALYTICA CHIMICA ACTA , 2022 , 1227 . |
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In this study, a novel surface molecularly imprinted polymer (MIP) based on zeolitic imidazolate framework (MIP@ZIF-7) was prepared using dibutyl phthalate (DBP) as template via "one-pot " method, which was used for extraction and determination four phthalates (PAEs) in food samples coupled with high performance liquid chromatography (HPLC). The obtained MIP@ZIF-7 was characterized by fourier transform infrared spectrometer (FT-IR), energy dispersive spectrum (EDS), scanning electron microscopy (SEM), nitrogen adsorption-desorption and contact angle tester. The adsorption performance of the prepared ZIF-7, MIP and MIP@ZIF-7 was compared and the results showed that MIP@ZIF-7 exhibited higher adsorption capacity and selectivity for PAEs owing to combining the high specific surface area and excellent stability of ZIF and the specific recognition of MIP. Subsequently, several requisite synthesis and extraction parameters were investigated. Under the optimal conditions, the linear range of the method was 1-100 mu g L-1 and the detection limits were in a range of 0.1-0.8 mu g L-1. The spiked recovery rate of PAEs from drinking water, carbonated beverages and fruit juices ranged from 77.1 +/- 1.5% to 100.7 +/- 3.4%, with relative standard deviation of 1.65-4.87% (n = 3). The results indicated that MIP@ZIF-7 could be effectively employed for extraction and determination trace PAEs in food.
Keyword :
Molecularly imprinted polymer Molecularly imprinted polymer Phthalates Phthalates Solid phase extraction Solid phase extraction Zeolitic imidazolate framework Zeolitic imidazolate framework
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GB/T 7714 | Gao, Jun , Fan, Danyang , Chu, Qinghua et al. Fabrication of a novel surface molecularly imprinted polymer based on zeolitic imidazolate framework-7 for selective extraction of phthalates [J]. | MICROCHEMICAL JOURNAL , 2022 , 178 . |
MLA | Gao, Jun et al. "Fabrication of a novel surface molecularly imprinted polymer based on zeolitic imidazolate framework-7 for selective extraction of phthalates" . | MICROCHEMICAL JOURNAL 178 (2022) . |
APA | Gao, Jun , Fan, Danyang , Chu, Qinghua , Lyu, Haixia , Xie, Zenghong . Fabrication of a novel surface molecularly imprinted polymer based on zeolitic imidazolate framework-7 for selective extraction of phthalates . | MICROCHEMICAL JOURNAL , 2022 , 178 . |
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Developing functional fiber coating for selective solid phase microextraction (SPME) of trace pollutants is critical in environmental analysis. Herein, the novel covalent organic frameworks (COFs) with three-dimensional (3D) frameworks and multiple interactions were designed and presented for the selec-tive SPME of polychlorinated biphenyls (PCBs). Using tetra (p-aminophenyl) methane (TAM) and 1,3,5-triformylphloroglucinol (Tp) as the monomers, the 3D TpTAM-COF was synthesized and possessed a large specific surface area, high thermal stability, and spatial selectivity toward PCBs. Characterizations such as morphology, XPS, XRD, thermal stability, and enhancement factors (EFs) were studied. Multiple in-teractions including pi-pi conjugation, hydrophobic interaction, and selectivity toward non-planar struc-ture were adopted, which resulted in a superior adsorption affinity toward PCBs on TpTAM-COF. Under the optimal conditions, the spatial selectivity toward PCBs, organic analogs (o-dichlorobenzene, biphenyl) and polycyclic aromatic hydrocarbons (naphthalene, pyrene, and anthracene)) was achieved. Efficient and selective adsorption of fifteen PCBs was fulfilled with the highest EF up to 10305. Using the HS-SPME-GC-MS method, the recoveries of PCBs in the river water and soil samples were determined to be 84.8 +/- 7.8% -117.2 +/- 8.5% (n = 3) and 84.4 +/- 8.6% -114.7 +/- 7.6% (n = 3), respectively. Compared with most commercial SPME fibers and other COFs-based fibers, the resultant TpTAM-COF-coated fibers possessed higher selectivity and EFs of PCBs. It proposed a promising approach for selective SPME of trace PCBs by multiple interactions in the steric structure of 3D COFs.(c) 2022 Elsevier B.V. All rights reserved.
Keyword :
3D covalent organic framework 3D covalent organic framework Fiber coating Fiber coating Polychlorinated biphenyls Polychlorinated biphenyls Selective solid phase microextraction Selective solid phase microextraction
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GB/T 7714 | Lu, Feifei , Wu, Mengqin , Lin, Chenchen et al. Efficient and selective solid-phase microextraction of polychlorinated biphenyls by using a three-dimensional covalent organic framework as functional coating [J]. | JOURNAL OF CHROMATOGRAPHY A , 2022 , 1681 . |
MLA | Lu, Feifei et al. "Efficient and selective solid-phase microextraction of polychlorinated biphenyls by using a three-dimensional covalent organic framework as functional coating" . | JOURNAL OF CHROMATOGRAPHY A 1681 (2022) . |
APA | Lu, Feifei , Wu, Mengqin , Lin, Chenchen , Lin, Xucong , Xie, Zenghong . Efficient and selective solid-phase microextraction of polychlorinated biphenyls by using a three-dimensional covalent organic framework as functional coating . | JOURNAL OF CHROMATOGRAPHY A , 2022 , 1681 . |
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