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Catalytic reduction of aqueous bromate by a non-noble metal catalyst of CoS2 hollow spheres in drinking water at room temperature
Chen, Yajing1,2; Yang, Weiyi3; Gao, Shuang3; Gao, Yu4; Sun, Caixia5,6; Li, Qi3
Corresponding AuthorLi, Qi(qiliuiuc@swjtu.edu.cn)
2020-11-15
Source PublicationSEPARATION AND PURIFICATION TECHNOLOGY
ISSN1383-5866
Volume251Pages:10
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.
KeywordCatalytic bromate reduction CoS2 Non-noble metal catalyst Tolerance to HCO3- Hollow sphere
Funding OrganizationNational 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
DOI10.1016/j.seppur.2020.117353
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000564719600008
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/140388
Collection中国科学院金属研究所
Corresponding AuthorLi, Qi
Affiliation1.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
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,2020,251:10.
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.
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