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In this study, Ni\/Fe bimetallic nanoparticles were immobilized on reduced graphene oxide (NF@rGO), and used to dechlorinate CT in aqueous solution. Scanning electron microscopy (SEM) demonstrated that the two-dimensional structure of rGO could disperse nanoparticles commendably. The results of batch experiments showed that the 4N4F@rGO (Fe\/GO = 4 wt.\/wt., and Ni\/Fe = 4 wt.%) could reach a higher reduction capacity (143.2 mgCT\/gcatalyst) compared with Ni\/Fe bimetallic nanoparticles (91.7 mgCT\/gcatalyst) and Fe0 nanoparticles (49.8 mgCT\/gcatalyst) respectively. That benefited from the nickel metal as a co-catalyst, which could reduce the reaction activation energy of 6.59 kJ\/mol, and rGO as an electrical conductivity supporting material could further reduce the reaction activation energy of 4.73 kJ\/mol as presented in the conceptual model. More complete dechlorination products were generated with the use of 4N4F@rGO. Based on the above results, the reductive pathway of CT and the catalytic reaction mechanism have been discussed.<\/jats:p>","DOI":"10.2166\/wst.2020.386","type":"journal-article","created":{"date-parts":[[2020,8,14]],"date-time":"2020-08-14T05:14:20Z","timestamp":1597382060000},"page":"759-772","update-policy":"https:\/\/doi.org\/10.2166\/iwapcrossmarkpolicypage","source":"Crossref","is-referenced-by-count":9,"title":["Hydrodechlorination of carbon tetrachloride with nanoscale nickeled zero-valent iron @ reduced graphene oxide: kinetics, pathway, and mechanisms"],"prefix":"10.2166","volume":"82","author":[{"given":"Xiao","family":"Chen","sequence":"first","affiliation":[{"name":"Beijing Key Laboratory of Water Resources & Environmental Engineering, China University of Geosciences (Beijing), Beijing 100083, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhen","family":"Wang","sequence":"additional","affiliation":[{"name":"Beijing Key Laboratory of Water Resources & Environmental Engineering, China University of Geosciences (Beijing), Beijing 100083, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qi","family":"Yang","sequence":"additional","affiliation":[{"name":"Beijing Key Laboratory of Water Resources & Environmental Engineering, China University of Geosciences (Beijing), Beijing 100083, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yeyao","family":"Wang","sequence":"additional","affiliation":[{"name":"China National Environmental Monitoring Center, Beijing, 100012, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhaoxiang","family":"Liu","sequence":"additional","affiliation":[{"name":"Foreign Economic Cooperation Office, Ministry of Environmental Protection, Beijing, 100035, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhilin","family":"Yang","sequence":"additional","affiliation":[{"name":"Beijing Key Laboratory of Water Resources & Environmental Engineering, China University of Geosciences (Beijing), Beijing 100083, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"945","published-online":{"date-parts":[[2020,8,13]]},"reference":[{"issue":"1","key":"2020093010543687300_WST-EM20643C1","doi-asserted-by":"crossref","first-page":"64","DOI":"10.1039\/C1RA00260K","article-title":"Graphene-inorganic nanocomposites","volume":"2","year":"2012","journal-title":"Rsc Advances"},{"issue":"8","key":"2020093010543687300_WST-EM20643C2","doi-asserted-by":"crossref","first-page":"1459","DOI":"10.1021\/jp973113m","article-title":"Photoeffects on the reduction of carbon tetrachloride by zero-valent iron","volume":"102","year":"1998","journal-title":"Journal of Physical Chemistry B"},{"issue":"6","key":"2020093010543687300_WST-EM20643C3","doi-asserted-by":"crossref","first-page":"1511","DOI":"10.1021\/es00006a012","article-title":"Destruction of organohalides in water using metal particles: carbon tetrachloride\/water reactions with magnesium, tin, and zinc","volume":"29","year":"1995","journal-title":"Environmental Science & Technology"},{"issue":"3","key":"2020093010543687300_WST-EM20643C4","doi-asserted-by":"crossref","first-page":"e4772","DOI":"10.1002\/aoc.4772","article-title":"Dechlorination of carbon tetrachloride by nanoscale nickeled zero-valent iron @ multi-walled carbon nanotubes: impact of reaction conditions, kinetics and mechanism","volume":"33","year":"2019","journal-title":"Applied Organometallic Chemistry"},{"issue":"21","key":"2020093010543687300_WST-EM20643C5","doi-asserted-by":"crossref","first-page":"6837","DOI":"10.1021\/es060921v","article-title":"Exploring the influence of granular iron additives on 1,1,1-trichloroethane reduction","volume":"40","year":"2006","journal-title":"Environmental Science & Technology"},{"issue":"2","key":"2020093010543687300_WST-EM20643C6","first-page":"354","article-title":"Chemical kinetics and process dynamics in aquatic systems by Patrick L. 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