Overcoming poisoning effects of heavy metal ions against photocatalysis for synergetic photo-hydrogen generation from wastewater

doi:10.1016/j.nanoen.2017.06.019

SIC OpenIR

	Overcoming poisoning effects of heavy metal ions against photocatalysis for synergetic photo-hydrogen generation from wastewater
	Xu, Yingfeng 1,2; Zhang, Chen 1,2; Lu, Ping 1; Zhang, Xiaohua 1,2; Zhang, Lingxia 1; Shi, Jianlin 1
	2017
Source Publication	Nano Energy
ISSN	22112855
Volume	38 Pages:494-503
Abstract	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
DOI	10.1016/j.nanoen.2017.06.019
EI Accession Number	20172603812703
EI Keywords	Chemicals removal (water treatment)
EI Classification Number	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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Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/25886
Collection	中国科学院上海硅酸盐研究所
Affiliation	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
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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