Single platinum atoms immobilized on an MXene as an efficient catalyst for the hydrogen evolution reaction
學年 107
學期 1
出版（發表）日期 2018-12-12
作品名稱 Single platinum atoms immobilized on an MXene as an efficient catalyst for the hydrogen evolution reaction
作品名稱（其他語言）
著者 Jinqiang Zhang; Yufei Zhao; Xin Guo; Chen Chen; Chung-Li Dong; Ru-Shi Liu; Chih-Pin Han; Yadong Li; Yury Gogotsi; Guoxiu Wang
單位
出版者
著錄名稱、卷期、頁數 Nature Catalysis 1 (12), p.985-992
摘要 Single-atom catalysts offer a pathway to cost-efficient catalysis using the minimal amount of precious metals. However, preparing and keeping them stable during operation remains a challenge. Here we report the synthesis of double transition metal MXene nanosheets—Mo2TiC2Tx, with abundant exposed basal planes and Mo vacancies in the outer layers—by electrochemical exfoliation, enabled by the interaction between protons and the surface functional groups of Mo2TiC2Tx. The as-formed Mo vacancies are used to immobilize single Pt atoms, enhancing the MXene’s catalytic activity for the hydrogen evolution reaction. The developed catalyst exhibits a high catalytic ability with low overpotentials of 30 and 77 mV to achieve 10 and 100 mA cm−2 and a mass activity about 40 times greater than the commercial platinum-on-carbon catalyst. The strong covalent interactions between positively charged Pt single atoms and the MXene contribute to the exceptional catalytic performance and stability.
關鍵字 Catalyst synthesis;Electrocatalysis;Energy;Heterogeneous catalysis
語言 en_US
ISSN 2520-1158
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 是
國別 GBR
公開徵稿
出版型式 ,電子版
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/117189 )