IMR OpenIR
Catalytic reduction of aqueous bromate by a non-noble metal catalyst of CoS2 hollow spheres in drinking water at room temperature
Chen, Yajing; Yang, Weiyi; Gao, Shuang; Gao, Yu; Sun, Caixia; Li, Qi
2020-11-15
Source PublicationSEPARATION AND PURIFICATION TECHNOLOGY
Volume251
AbstractBromate is a toxic disinfection by-product of drinking water due to its potential carcinogenicity in human and its content is strictly regulated in drinking water all around the world. Among various techniques for the elimination of bromate from drinking water, the catalytic hydrogenation is now believed as an efficient and clean process. However, catalysts developed for the catalytic hydrogenation of bromate were mostly limited to noble metal-based catalysts, while their high cost and scarcity seriously impede their practical applications. In this work, a non-noble metal catalyst of CoS2 hollow spheres were synthesized by a facile hydrothermal process during which the oil droplets of CS2 served as both the sulfur source and the soft template for the creation of hollow sphere structure. It was found for the first time that CoS2 hollow spheres could successfully reduce aqueous bromate to nontoxic bromide with the reducing agent of H-2 at room temperature as a noble-metal substitute with comparable performance and stability to Pd-based catalysts. A 100% conversion ratio was observed after 20 min, 30 min, and 1 h treatments for initial bromate concentrations of 0.0078 mM (1 ppm), 0.078 mM (10 ppm) and 0.39 mM (50 ppm), respectively, with the loading of CoS2 hollow spheres of 0.2 g.L-1 and the supply of H-2 flow of 100 cm(3)/min, and the corresponding bromate reduction rates were 0.117, 0.78 and 1.95 mmolBromate.h(-1).gcat(-1), respectively. Furthermore, CoS2 hollow spheres demonstrated a superior tolerance to the commonly found oxyanion of HCO3- in drinking water for catalytic bromate reduction than that of Pd based catalysts.
DOI10.1016/j.seppur.2020.117353
WOS IDWOS:000564719600008
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/82352
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Chen, Yajing,Yang, Weiyi,Gao, Shuang,et al. Catalytic reduction of aqueous bromate by a non-noble metal catalyst of CoS2 hollow spheres in drinking water at room temperature[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2020,251.
APA Chen, Yajing,Yang, Weiyi,Gao, Shuang,Gao, Yu,Sun, Caixia,&Li, Qi.(2020).Catalytic reduction of aqueous bromate by a non-noble metal catalyst of CoS2 hollow spheres in drinking water at room temperature.SEPARATION AND PURIFICATION TECHNOLOGY,251.
MLA Chen, Yajing,et al."Catalytic reduction of aqueous bromate by a non-noble metal catalyst of CoS2 hollow spheres in drinking water at room temperature".SEPARATION AND PURIFICATION TECHNOLOGY 251(2020).
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Chen, Yajing]'s Articles
[Yang, Weiyi]'s Articles
[Gao, Shuang]'s Articles
Baidu academic
Similar articles in Baidu academic
[Chen, Yajing]'s Articles
[Yang, Weiyi]'s Articles
[Gao, Shuang]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Chen, Yajing]'s Articles
[Yang, Weiyi]'s Articles
[Gao, Shuang]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.