title: Sulfur doped reduced graphene oxides with enhanced catalytic activity for oxygen reduction via molten salt redox-sulfidation.
abstract: A spontaneous redox reaction of reduced graphene oxide (rGO) in molten Li2CO3-Na2CO3-K2CO3with a small amount of Li2SO4at 550 °C was applied to synthesize sulfur and sulfur-cobalt doped rGOs (S-rGO/S-Co-rGO). The obtained S-rGOs and S-Co-rGOs show enhanced catalytic activity for the oxygen reduction reaction (ORR) in alkaline aqueous solutions. The onset reduction potential and the half-wave potential of S-Co-rGO are 60 and 40 mV more positive than those of the original rGO, respectively. The reduction current density of S-Co-rGO increases by nearly five times. This study provides a green and continuous molten salt doping approach for the fabrication of heteroatom-doped graphene with excellent catalytic activity for the ORR.
authors.affiliation: School of Resource and Environmental Science, Wuhan University, Wuhan 430072, P. R. China. wangdh@whu.edu.cn and International Cooperation Base for Sustainable Utilization of Resources and Energy in Hubei Province, Wuhan 430072, P. R. China.
authors.forename: Yuxing
authors.initials: Y
authors.lastname: Gu
authors.affiliation: School of Resource and Environmental Science, Wuhan University, Wuhan 430072, P. R. China. wangdh@whu.edu.cn and International Cooperation Base for Sustainable Utilization of Resources and Energy in Hubei Province, Wuhan 430072, P. R. China.
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Chen
authors.affiliation: School of Resource and Environmental Science, Wuhan University, Wuhan 430072, P. R. China. wangdh@whu.edu.cn and International Cooperation Base for Sustainable Utilization of Resources and Energy in Hubei Province, Wuhan 430072, P. R. China.
authors.forename: Juanjuan
authors.initials: J
authors.lastname: Tang
authors.affiliation: School of Resource and Environmental Science, Wuhan University, Wuhan 430072, P. R. China. wangdh@whu.edu.cn and International Cooperation Base for Sustainable Utilization of Resources and Energy in Hubei Province, Wuhan 430072, P. R. China.
authors.forename: Wei
authors.identifier: http://orcid.org/0000-0001-5244-797X
authors.initials: W
authors.lastname: Xiao
authors.affiliation: School of Resource and Environmental Science, Wuhan University, Wuhan 430072, P. R. China. wangdh@whu.edu.cn and International Cooperation Base for Sustainable Utilization of Resources and Energy in Hubei Province, Wuhan 430072, P. R. China.
authors.forename: Xuhui
authors.initials: X
authors.lastname: Mao
authors.affiliation: School of Resource and Environmental Science, Wuhan University, Wuhan 430072, P. R. China. wangdh@whu.edu.cn and International Cooperation Base for Sustainable Utilization of Resources and Energy in Hubei Province, Wuhan 430072, P. R. China.
authors.forename: Hua
authors.initials: H
authors.lastname: Zhu
authors.affiliation: School of Resource and Environmental Science, Wuhan University, Wuhan 430072, P. R. China. wangdh@whu.edu.cn and International Cooperation Base for Sustainable Utilization of Resources and Energy in Hubei Province, Wuhan 430072, P. R. China.
authors.forename: Dihua
authors.identifier: http://orcid.org/0000-0003-2364-8718
authors.initials: D
authors.lastname: Wang