Query:
学者姓名:邵海洋
Refining:
Year
Type
Indexed by
Source
Complex
Co-
Language
Clean All
Abstract :
Sustainable chemistry principles underscore the pivotal role of solvent-free processes in the fabrication of anion exchange membranes (AEMs). This study presents an eco-friendly, solvent-free approach for AEM preparation via photopolymerization, utilizing 4-vinylpyridine as the monomer and divinylbenzene as the crosslinking agent. The polymerization, conducted at ambient temperature and completed within 20 min, was followed by post-polymerization N-alkylation with ethyl bromide to introduce pyridinium groups. The precise modulation of crosslinking and N-alkylation levels enabled meticulous control over the membranes' intrinsic chemical properties and their functional effectiveness in electrodialysis desalination. The optimal membrane's area resistance was recorded at 1.09 Omega cm2, while its transport number reached 0.965, outperforming the commercial AMV AEM in desalination efficacy. This work underscores the promise of solvent-free photopolymerization as a sustainable, high-performance strategy for fabricating AEMs, providing substantial advancements in both environmental sustainability and electrodialysis desalination performance.
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Cheng, Yafei , Zhang, Huanhuan , Yuan, Lei et al. Sustainable synthesis of high-performance anion exchange membranes for electrodialysis desalination via photopolymerization [J]. | JOURNAL OF MEMBRANE SCIENCE , 2025 , 721 . |
MLA | Cheng, Yafei et al. "Sustainable synthesis of high-performance anion exchange membranes for electrodialysis desalination via photopolymerization" . | JOURNAL OF MEMBRANE SCIENCE 721 (2025) . |
APA | Cheng, Yafei , Zhang, Huanhuan , Yuan, Lei , Shao, Haiyang , Lin, Xiaocheng . Sustainable synthesis of high-performance anion exchange membranes for electrodialysis desalination via photopolymerization . | JOURNAL OF MEMBRANE SCIENCE , 2025 , 721 . |
Export to | NoteExpress RIS BibTex |
Version :
Abstract :
Diffusion dialysis (DD) presents a highly promising and cost-efficient approach for acid recovery, yet its performance is often hindered by the acid permeability of anion exchange membranes (AEMs). To address this challenge, a one-step approach has been developed to fabricate porous AEMs. Using brominated polyphenylene oxide (BPPO) as the porous base membrane, imidazole is employed for in-situ crosslinking and cationization. This approach not only retains the inherent porosity (>63.5 %) of the base membrane but also achieves an exceptionally thin selective layer (<0.3 mu m), thereby creating abundant free space volume. Through a concurrent enhancement of ion transport sites and crosslinking density, the membrane effectively breaks acid permeability-selectivity trade-off. The optimal IPPO-20h AEM demonstrates a remarkable increase in both the acid dialysis coefficient (U-H+ = 34.1 x 10(-3) m/h) and separation factor (S-H+/(Fe)2+ = 573.8) in the HCl/FeCl2 system, with enhancements of 4- and 31-fold, respectively, compared to the commercial DF120 AEM, at 25 degrees C. This high-performance AEM, synthesized via a straightforward and mild process, offers significant potential for large-scale acid recovery applications.
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Shao, Haiyang , Tan, Zhengke , Cheng, Yafei et al. One-step fabrication of porous anion exchange membranes for acid recovery breaking acid permeability-selectivity trade-off [J]. | JOURNAL OF MEMBRANE SCIENCE , 2025 , 723 . |
MLA | Shao, Haiyang et al. "One-step fabrication of porous anion exchange membranes for acid recovery breaking acid permeability-selectivity trade-off" . | JOURNAL OF MEMBRANE SCIENCE 723 (2025) . |
APA | Shao, Haiyang , Tan, Zhengke , Cheng, Yafei , Yue, Xiang'an , Yuan, Lei , Jian, Weixiong et al. One-step fabrication of porous anion exchange membranes for acid recovery breaking acid permeability-selectivity trade-off . | JOURNAL OF MEMBRANE SCIENCE , 2025 , 723 . |
Export to | NoteExpress RIS BibTex |
Version :
Abstract :
Several methods have been developed to age microplastics (MPs), and aged microplastics also exhibit a significant increase in adsorption capacity for pollutants. We utilized electron beam/oxidant to create strong oxidative environment, achieving efficient aging degradation of microplastics and significant reduction in aged microplastics adsorption capacity. The adsorption capacity of aged polyethylene decreases from 1.29 mg g−1 to 0.76 mg g−1 with Electron beam/Hydrogen peroxide system, and to 0.98 mg g−1 with Electron beam/Potassium persulfate system. With the increasing oxidizing ability, the total organic carbon concentration of the aged microplastics increased from 14.6 mg L−1 to 23.8 mg L−1, and the carbonyl index value decreased from 0.69 to 0.19, O/C from 0.151 to 0.138. The addition of strong oxidants promotes the further conversion of carbonyl to hydroxyl on the aged PE surface, ultimately achieving the removal of oxygen-containing functional groups. We have first revealed a more in-depth aging process of polyethylene under strong oxidative conditions, which involves oxidation and deoxygenation processes. The removal of oxygen-containing functional groups reduces the adsorption capacity of polyethylene, lowering the environmental hazards. This study introduces a novel method to enhance the degradation of aged polyethylene and reduce adsorption equilibrium capacity. © 2025
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Chen, Lei , Wang, Jun , Shao, Haiyang et al. Surface deoxygenation via electron beam/oxidant treatment: A novel pathway to reduce pollutant adsorption on aged microplastics [J]. | Journal of Environmental Management , 2025 , 385 . |
MLA | Chen, Lei et al. "Surface deoxygenation via electron beam/oxidant treatment: A novel pathway to reduce pollutant adsorption on aged microplastics" . | Journal of Environmental Management 385 (2025) . |
APA | Chen, Lei , Wang, Jun , Shao, Haiyang , Wang, Hongyong , Xu, Gang . Surface deoxygenation via electron beam/oxidant treatment: A novel pathway to reduce pollutant adsorption on aged microplastics . | Journal of Environmental Management , 2025 , 385 . |
Export to | NoteExpress RIS BibTex |
Version :
Abstract :
During the conventional aging process of microplastics, a significant amount of oxygen-containing functional groups are generated, which enhances the adsorption capacity of aged microplastics. In this study, we constructed various electron beam/strong oxidant systems and adjusted the oxidative capacity to enhance the aging performance of polypropylene while reducing its adsorption ability. Experimental results indicate that as the oxidative capacity of the system increases, the aging degree of polypropylene significantly improves, yet the adsorption performance for sulfonamides exhibits a trend of initially decreasing and then increasing. Conventional methods typically generate a large number of oxygen-containing functional groups on the surface of microplastics. These oxygen-containing functional groups enhance the adsorption capacity for sulfonamide pollutants through electrostatic interactions, hydrogen bonding, and van der Waals forces. As we further enhance the oxidative capacity of the system, reactive free radicals continue to attack the surface oxygen-containing functional groups, resulting in their removal and transformation. We determined for the first time the changes in the aging process of microplastics and the surface oxygen-containing functional groups under different oxidative capacities. This breakthrough reveals the nonlinear relationship between oxidation intensity and the evolution of surface functional groups. At low oxidation intensities, reactive radicals preferentially attack and remove oxygen-containing functional groups, thereby decreasing the sites for pollutant adsorption. In contrast, at high oxidation intensities, the restructuring of functional group structures facilitates a rebound in adsorption performance. This mechanism systematically clarifies the longstanding 'aging-adsorption' vicious cycle, providing theoretical support for the precise regulation of microplastic aging pathways. © 2025 Elsevier Inc.
Keyword :
Agricultural pollution Agricultural pollution Air pollution Air pollution Bioremediation Bioremediation Insulator contamination Insulator contamination Pollution detection Pollution detection Soil pollution Soil pollution Thermal pollution Thermal pollution Van der Waals forces Van der Waals forces Water pollution Water pollution
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Lei, Chen , Manchen, Lin , Chengkai, Mao et al. Modulating oxidative capacity to simultaneously enhance microplastics aging and reduce adsorption performance: A novel approach to environmental remediation [J]. | Environmental Research , 2025 , 279 . |
MLA | Lei, Chen et al. "Modulating oxidative capacity to simultaneously enhance microplastics aging and reduce adsorption performance: A novel approach to environmental remediation" . | Environmental Research 279 (2025) . |
APA | Lei, Chen , Manchen, Lin , Chengkai, Mao , Weixiong, Jian , Haiyang, Shao , Minghong, Wu . Modulating oxidative capacity to simultaneously enhance microplastics aging and reduce adsorption performance: A novel approach to environmental remediation . | Environmental Research , 2025 , 279 . |
Export to | NoteExpress RIS BibTex |
Version :
Abstract :
Polybrominated diphenyl ethers (PBDEs) and their alternatives (e.g., dechlorane plus (DPs) and decabromodiphenyl ethane (DBDPE)) are ubiquitous in various environmental media. However, limited data is available on these chemicals in edible fish species from the wide-open South China Sea (SCS). In the present study, ten legacy PBDEs and three substitutions (DBDPE and two DPs) were analyzed in 16 wild fish species sampled from the open SCS to investigate their spatial and species-specific variations. The results showed that the total concentrations of PBDEs, DBDPE, and DPs in fish samples were in the range of 1.69-47.6, not detected (nd) to 21.0, and nd to 3.80 ng/g lipid weight (lw), respectively. BDEs 47, 209 and 100 were the dominant target PBDE congeners, representing 49.2%, 17.2% and 9.93% of the total PBDE concentrations, respectively. Higher concentrations of PBDEs, DBDPE, and DPs were found in fish species from the Wanshan Archipelago compared to those from the Mischief Reef and the Yongxing Island, suggesting the significant influence of anthropogenic activities. Species-specific differences in levels of PBDEs were observed, with the order of bathydemersal > demersal > pelagic approximate to reef-associated > benthopelagic species. The average fanti value of all fish samples was 0.68, suggesting commercial DP products as a contamination source. The levels of PBDEs, DPs, and DBDPE in fish samples were relatively low compared with those from other locations around the globe. Finally, the health risks concerning the ingestion of BDEs 47, 99, 153 and 209 via fish consumption collected from the SCS are negligible.
Keyword :
Decabromodiphenyl ethane Decabromodiphenyl ethane Dechlorane plus Dechlorane plus Edible fish Edible fish Human health risk Human health risk Polybrominated diphenyl ethers Polybrominated diphenyl ethers
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Sun, Run-Xia , Pan, Chang-Gui , Peng, Feng-Jiao et al. Evidence of polybrominated diphenyl ethers (PBDEs) and alternative halogenated flame retardants (AHFRs) in wild fish species from the remote tropical marine environment, south China sea [J]. | ENVIRONMENTAL POLLUTION , 2024 , 361 . |
MLA | Sun, Run-Xia et al. "Evidence of polybrominated diphenyl ethers (PBDEs) and alternative halogenated flame retardants (AHFRs) in wild fish species from the remote tropical marine environment, south China sea" . | ENVIRONMENTAL POLLUTION 361 (2024) . |
APA | Sun, Run-Xia , Pan, Chang-Gui , Peng, Feng-Jiao , Yu, Zi-Ling , Shao, Hai-Yang , Yang, Bing-Zhong et al. Evidence of polybrominated diphenyl ethers (PBDEs) and alternative halogenated flame retardants (AHFRs) in wild fish species from the remote tropical marine environment, south China sea . | ENVIRONMENTAL POLLUTION , 2024 , 361 . |
Export to | NoteExpress RIS BibTex |
Version :
Abstract :
A green anion exchange membrane for electrodialysis desalination was synthesized using a solvent-free photo polymerization approach. Vinylbenzyl chloride (monomer), tripropylene glycol diacrylate (crosslinker), and photoinitiator were mixed and subjected to UV polymerization for 20 min to create the base membrane, followed by positive charge modification with 1-methylimidazole. This method avoids organic solvents, offering economic and environmental benefits. By adjusting the degrees of crosslinking and positive charge, precise control over the membrane's microstructure and properties was achieved. The optimized membrane showed an area resistance 1.67 Omega cm(2) and a transport number of 0.956, demonstrating exceptional electrochemical performance. Under comparable conditions, the optimized membrane improved the NaCl removal rate by 11.47 %, increased current efficiency by 10.61 %, and reduced energy consumption by 16.75 % compared to commercial AMV membrane, highlighting its potential for scalable seawater desalination through electrodialysis.
Keyword :
Anion exchange membrane Anion exchange membrane Desalination Desalination Electrodialysis Electrodialysis Photo-polymerization Photo-polymerization Solvent-free Solvent-free
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Ge, Xuehui , Zhang, Huanhuan , Cheng, Yafei et al. Solvent-free green synthesis of anion exchange membranes via photo-polymerization for efficient desalination by electrodialysis [J]. | DESALINATION , 2024 , 592 . |
MLA | Ge, Xuehui et al. "Solvent-free green synthesis of anion exchange membranes via photo-polymerization for efficient desalination by electrodialysis" . | DESALINATION 592 (2024) . |
APA | Ge, Xuehui , Zhang, Huanhuan , Cheng, Yafei , Shao, Haiyang , Yuan, Lei , Shen, Senbin et al. Solvent-free green synthesis of anion exchange membranes via photo-polymerization for efficient desalination by electrodialysis . | DESALINATION , 2024 , 592 . |
Export to | NoteExpress RIS BibTex |
Version :
Abstract :
Microplastics are widely present in the natural environment and exhibit a strong affinity for heavy metals in water, resulting in the formation of microplastics composite heavy metal pollutants. This study investigated the adsorption of heavy metals by electron beam-aged microplastics. For the first time, electron beam irradiation was employed to degrade polypropylene, demonstrating its ability to rapidly age microplastics and generate a substantial number of oxygen-containing functional groups on aged microplastics surface. Adsorption experiments revealed that the maximum adsorption equilibrium capacity of hexavalent chromium by aged microplastics reached 9.3 mg g−1. The adsorption process followed second-order kinetic model and Freundlich model, indicating that the main processes of heavy metal adsorption by aged microplastics are chemical adsorption and multilayer adsorption. The adsorption of heavy metals on aged microplastics primarily relies on the electrostatic and chelation effects of oxygen-containing functional groups. The study results demonstrate that environmental factors, such as pH, salinity, coexisting metal ions, humic acid, and water matrix, exert inhibitory effects on the adsorption of heavy metals by microplastics. Theoretical calculations confirm that the aging process of microplastics primarily relies on hydroxyl radicals breaking carbon chains and forming oxygen-containing functional groups on the surface. The results indicate that electron beam irradiation can simultaneously oxidize and degrade microplastics while reducing hexavalent chromium levels by approximately 90%, proposing a novel method for treating microplastics composite pollutants. Gas chromatography-mass spectrometry analysis reveals that electron beam irradiation can oxidatively degrade microplastics into esters, alcohols, and other small molecules. This study proposes an innovative and efficient approach to treat both microplastics composite heavy metal pollutants while elucidating the impact of environmental factors on the adsorption of heavy metals by electron beam-aged microplastics. The aim is to provide a theoretical basis and guidance for controlling microplastics composite pollution. © 2024 Elsevier Ltd
Keyword :
Adsorption Adsorption Electron beams Electron beams Electrons Electrons Gas chromatography Gas chromatography Heavy metals Heavy metals Irradiation Irradiation Mass spectrometry Mass spectrometry Metal ions Metal ions Oxygen Oxygen Polypropylenes Polypropylenes Water pollution Water pollution
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Chen, Lei , Xie, Nan , Yuan, Shanning et al. Adsorption mechanism of hexavalent chromium on electron beam-irradiated aged microplastics: Novel aging processes and environmental factors [J]. | Chemosphere , 2024 , 363 . |
MLA | Chen, Lei et al. "Adsorption mechanism of hexavalent chromium on electron beam-irradiated aged microplastics: Novel aging processes and environmental factors" . | Chemosphere 363 (2024) . |
APA | Chen, Lei , Xie, Nan , Yuan, Shanning , Shao, Haiyang . Adsorption mechanism of hexavalent chromium on electron beam-irradiated aged microplastics: Novel aging processes and environmental factors . | Chemosphere , 2024 , 363 . |
Export to | NoteExpress RIS BibTex |
Version :
Abstract :
With the increasing severity of the plastic pollution issue, biodegradable plastics are considered a critical approach to addressing plastic pollution. However, the aging process of biodegradable plastics and the resulting microplastics adsorption of pollutants in the environment are not clearly understood. This study investigated the physicochemical property changes of different microplastics (Biodegradable microplastics and nonbiodegradable microplastics) during aging, examined the adsorption processes and mechanisms of biodegradable plastics and non-degradable plastics towards typical pollutants in the environment, and elucidated the different aging mechanisms and adsorption mechanisms of biodegradable plastics and non-biodegradable plastics. The experimental results indicated that compared to non-biodegradable microplastics, biodegradable microplastics are more prone to aging in the environment, forming smaller microplastic particles and easier adsorption of environmental pollutants. Biodegradable microplastics have abundant oxygen-containing functional groups on the surface, which enhance age biodegradable microplastics adsorption capacity for pollutants through electrostatic interactions, chelation, and hydrogen bonding. The experimental results show that a strong oxidation system has unique advantages in the aging removal of biodegradable microplastics and can effectively reduce the adsorption equilibrium capacity of biodegradable microplastics. This research contributes to a deeper understanding of biodegradable microplastics' aging and adsorption behaviors in the environment, highlighting their significant role as carriers of pollutants.
Keyword :
Adsorption mechanism Adsorption mechanism Biodegradable microplastics Biodegradable microplastics Novel aging process Novel aging process Oxygen-containing functional groups Oxygen-containing functional groups
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Chen, Lei , Mao, Chengkai , Yuan, Shanning et al. Comparison of aging behavior and adsorption processes of biodegradable and conventional microplastics [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 502 . |
MLA | Chen, Lei et al. "Comparison of aging behavior and adsorption processes of biodegradable and conventional microplastics" . | CHEMICAL ENGINEERING JOURNAL 502 (2024) . |
APA | Chen, Lei , Mao, Chengkai , Yuan, Shanning , Pu, Xianjuan , Liang, Huanhuan , Chen, Xiangyu et al. Comparison of aging behavior and adsorption processes of biodegradable and conventional microplastics . | CHEMICAL ENGINEERING JOURNAL , 2024 , 502 . |
Export to | NoteExpress RIS BibTex |
Version :
Export
Results: |
Selected to |
Format: |