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

doi:10.1016/j.nanoen.2017.06.019

	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
刊名	Nano Energy
	2017
卷号	38 页码:494-503
ISSN号	22112855
DOI	10.1016/j.nanoen.2017.06.019
英文摘要	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
内容类型	期刊论文
源URL	[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
推荐引用方式 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.