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Spherical montmorillonite-supported molybdenum disulfide nanosheets as a self-sedimentary catalyst for organic pollutants removal

文献类型：期刊论文

作者Wang, Hongzhen3; Wang, Ning1,2; Wang, Fushuai4; Xiao, Fengyan1; Pan, Dawei1,2,5
刊名SEPARATION AND PURIFICATION TECHNOLOGY
出版日期2020-11-15
卷号251页码:8
ISSN号1383-5866
关键词Spherical montmorillonite MoS2 Catalyst Organic pollutants
DOI10.1016/j.seppur.2020.117346
通讯作者Wang, Ning(nwang@yic.ac.cn) ; Pan, Dawei(dwpan@yic.ac.cn)
英文摘要Water containing organic and carcinogenic pollutants has become a serious environmental problem, threatening the life of the aquatic ecosystem and human beings. Molybdenum disulfide (MoS2), especially monolayered MoS2 sheets, has been proven as an effective catalyst for degradation of organic contaminants due to its more exposed edges and active sites for electron transfer. However, monolayered MoS2 nanosheets easily aggregate due to their high surface energy and strong pi-pi electron interaction, heavily affecting the catalytic performances. In addition, monolayered MoS2 nanosheets with small tiny size are difficult to recover from the mixture, restricting the capacity of recyclability and further mass application. Herein, we solved these issues via supporting the small tiny MoS2 nanosheets on spherical montmorillonite (SMt). The SMt can not only provide large pore volume and specific surface area for supporting abundant MoS2 but also reduce the fouling and enhance the transport during the mass production process. The prepared microspheres exhibited a high catalytic activity towards organic pollutants including methylene blue (MB) and 4-nitrophenol (4-NP) in the presence of NaBH4 due to the strong adsorption capacity of SMt and the large catalytic surface area for electron transfer. Furthermore, the micro-sized granular catalyst can be facile recovered and reused without any devices involved due to the excellent self-sedimentary capacity and large size. Moreover, the catalytic performance and the morphology were almost unaltered after recycling 20 times. Our straightforward strategy to solve the issues through porous micro-sized self-sedimentary SMt supporting tiny monolayered MoS2 nanosheet with high catalytic activity facilitates the practical application of these kinds of catalyst towards the reduction of organic and carcinogenic pollutants.
WOS关键词PHOTOCATALYTIC ACTIVITY ; METHYLENE-BLUE ; REDUCTION ; MICROSPHERES ; WATER ; MOS2 ; NANOCOMPOSITE ; ENHANCEMENT ; ADSORPTION ; SILVER
资助项目National Natural Science Foundation of China[51703110] ; National Natural Science Foundation of China[51903247] ; Key Science and Technology Program of Yantai City, China[2018ZHGY075] ; Shandong Key Laboratory of Coastal Environmental Processes, YICCAS[2019SDHADKFJJ15]
WOS研究方向Engineering
语种英语
WOS记录号WOS:000564722100015
资助机构National Natural Science Foundation of China ; Key Science and Technology Program of Yantai City, China ; Shandong Key Laboratory of Coastal Environmental Processes, YICCAS
源URL[http://ir.yic.ac.cn/handle/133337/28515]  
专题烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
烟台海岸带研究所_山东省海岸带环境工程技术研究中心
通讯作者Wang, Ning; Pan, Dawei
作者单位1.Chinese Acad Sci, Res Ctr Coastal Environm Engn & Technol Shandong, Yantai Inst Coastal Zone Res,Shandong Key Lab Coa, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
2.Chinese Acad Sci, Ctr Ocean Megasci, 7 Nanhai Rd, Qingdao 266071, Peoples R China
3.Qingdao Univ Sci & Technol, Qingdao 266001, Peoples R China
4.Yantai Univ, Yantai 264005, Shandong, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Hongzhen,Wang, Ning,Wang, Fushuai,et al. Spherical montmorillonite-supported molybdenum disulfide nanosheets as a self-sedimentary catalyst for organic pollutants removal[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2020,251:8.
APA Wang, Hongzhen,Wang, Ning,Wang, Fushuai,Xiao, Fengyan,&Pan, Dawei.(2020).Spherical montmorillonite-supported molybdenum disulfide nanosheets as a self-sedimentary catalyst for organic pollutants removal.SEPARATION AND PURIFICATION TECHNOLOGY,251,8.
MLA Wang, Hongzhen,et al."Spherical montmorillonite-supported molybdenum disulfide nanosheets as a self-sedimentary catalyst for organic pollutants removal".SEPARATION AND PURIFICATION TECHNOLOGY 251(2020):8.

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来源：烟台海岸带研究所

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