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Overcoming poisoning effects of heavy metal ions against photocatalysis for synergetic photo-hydrogen generation from wastewater
Xu, Yingfeng1,2; Zhang, Chen1,2; Lu, Ping1; Zhang, Xiaohua1,2; Zhang, Lingxia1; Shi, Jianlin1
2017
Source PublicationNano Energy
ISSN22112855
Volume38Pages:494-503
AbstractThe concept of photocatalytic H2generation from wastewater provides potential simultaneous solutions for clean energy generation and wastewater remediation, which, however, suffers from the poisoning effect of wastewater-containing heavy metal ions against photocatalysis. Here, an innovative “trash-to-treasure” strategy is proposed to reuse the toxic heavy metal contaminants for enhanced H2generation performance from wastewater via synergetic photocatalysis. Through fabricating a transparent adsorbent polysaccharides hydrogel to incorporate photocatalyst without deteriorating its photocatalytic activities, heavy metal ions could be efficiently collected on the well-designed system to minimize their influence on photocatalytic process. Then an in-situ sulfurization process was subsequently introduced to convert the adsorbed heavy metal ions into corresponding metal sulfide semiconductors with narrowed band-gap, concurrently forming heterojunction with incorporated photocatalysts, which resulted in the significantly elevated photocatalytic activities for H2generation. Based on the detailed studies on both the performances and mechanism, this general and facial strategy firstly demonstrate the recycling of harmful heavy metal contaminants to overcome the adverse catalyst poisoning effect, and even to accomplish the elevated H2photo-generation from wastewater, which may provide a promising yet practical solution for clean energy generation and wastewater purification. © 2017 Elsevier Ltd
DOI10.1016/j.nanoen.2017.06.019
EI Accession Number20172603812703
EI KeywordsChemicals removal (water treatment)
EI Classification Number452.4 Industrial Wastes Treatment and Disposal - 522 Gas Fuels - 531 Metallurgy and Metallography - 531.1 Metallurgy - 714.2 Semiconductor Devices and Integrated Circuits - 741.1 Light/Optics - 803 Chemical Agents and Basic Industrial Chemicals
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Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/25886
Collection中国科学院上海硅酸盐研究所
Affiliation1.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China;
2.University of Chinese Academy of Sciences, Beijing; 100049, China
Recommended Citation
GB/T 7714
Xu, Yingfeng,Zhang, Chen,Lu, Ping,et al. Overcoming poisoning effects of heavy metal ions against photocatalysis for synergetic photo-hydrogen generation from wastewater[J]. Nano Energy,2017,38:494-503.
APA Xu, Yingfeng,Zhang, Chen,Lu, Ping,Zhang, Xiaohua,Zhang, Lingxia,&Shi, Jianlin.(2017).Overcoming poisoning effects of heavy metal ions against photocatalysis for synergetic photo-hydrogen generation from wastewater.Nano Energy,38,494-503.
MLA Xu, Yingfeng,et al."Overcoming poisoning effects of heavy metal ions against photocatalysis for synergetic photo-hydrogen generation from wastewater".Nano Energy 38(2017):494-503.
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