Catalytic reduction of aqueous bromate by a non-noble metal catalyst of CoS2 hollow spheres in drinking water at room temperature

doi:10.1016/j.seppur.2020.117353

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 1,2; Yang, Weiyi 3; Gao, Shuang 3; Gao, Yu 4; Sun, Caixia 5,6; Li, Qi 3
通讯作者	Li, Qi(qiliuiuc@swjtu.edu.cn)
	2020-11-15
发表期刊	SEPARATION AND PURIFICATION TECHNOLOGY
ISSN	1383-5866
卷号	251 页码:10
摘要	Bromate 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.
关键词	Catalytic bromate reduction CoS2 Non-noble metal catalyst Tolerance to HCO3- Hollow sphere
资助者	National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Shenyang National Laboratory for Materials Science ; State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals ; Liaoning Baiqianwan Talents Program ; Natural Science Foundation of Shandong Province, PR China
DOI	10.1016/j.seppur.2020.117353
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51672283] ; National Natural Science Foundation of China[51602316] ; National Natural Science Foundation of China[51902271] ; Fundamental Research Funds for the Central Universities[A1920502051907-15] ; Fundamental Research Funds for the Central Universities[2682020CX07] ; Fundamental Research Funds for the Central Universities[2682020CX08] ; Shenyang National Laboratory for Materials Science[18LHPY009] ; State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals[18LHPY009] ; Liaoning Baiqianwan Talents Program ; Natural Science Foundation of Shandong Province, PR China[ZR2017MEM017]
WOS研究方向	Engineering
WOS类目	Engineering, Chemical
WOS记录号	WOS:000564719600008
出版者	ELSEVIER
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/140391
专题	中国科学院金属研究所
通讯作者	Li, Qi
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Southwest Jiaotong Univ, Coll Mat Sci & Engn, Key Lab Adv Technol Mat, Minist Educ, Chengdu 610031, Peoples R China 4.China Acad Engn Phys, Inst Mat, Mianyang 621700, Sichuan, Peoples R China 5.Qingdao Binhai Univ, Key Lab New Metall Funct Mat & Adv Surface Engn U, Qingdao 266555, Peoples R China 6.Qingdao Binhai Univ, Sch Mech & Elect Engn, Qingdao 266555, Peoples R China
推荐引用方式 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,2020,251:10.
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,251,10.
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):10.