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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
发表期刊Nano Energy
ISSN22112855
卷号38页码:494-503
摘要The 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入藏号20172603812703
EI主题词Chemicals removal (water treatment)
EI分类号452.4 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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文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/25886
专题中国科学院上海硅酸盐研究所
作者单位1.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
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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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