文献类型：期刊文献

英文题名：Tunable nitrogen-doped delaminated 2D MXene obtained by NH3/Ar plasma treatment as highly efficient hydrogen and oxygen evolution reaction electrocatalyst

作者：Chen, Xunxin[1,2,3];Zhai, Xingwu[1,2,3];Hou, Juan[1,2];Cao, Hong[1,2];Yue, Xuanyu[3];Li, Meishan[1,2];Chen, Long[3];Liu, Zhiyong[3];Ge, Guixian[1,2];Guo, Xuhong[4]

机构：[1]Shihezi Univ, Coll Sci, Key Lab Ecophys, Shihezi 832003, Xinjiang, Peoples R China;[2]Shihezi Univ, Dept Phys, Shihezi 832003, Xinjiang, Peoples R China;[3]Shihezi Univ, Key Lab Green Proc Chem Engn Xinjiang Bingtuan, Sch Chem & Chem Engn, Shihezi 832003, Xinjiang, Peoples R China;[4]East China Univ Sci & Technol, Sch Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2021

卷号：420

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20211710255128);WOS:【SCI-EXPANDED(收录号:WOS:000664200900001)】；

基金：This work was supported by the National Natural Science Foundationof China (No. 61704114) , the Key areas of Science and Technology Program of Xinjiang Production and Construction Corps, China (No. 2018AB004) , and the National Science Foundation (CBET-1803256) .

语种：英文

外文关键词：MXene; NH3; Ar plasma; Delamination; Tunable nitrogen doping; Hydrogen evolution reaction; Oxygen evolution reaction

摘要：Constructing two-dimensional MXene surface defects can greatly improve electrocatalytic performance. Herein, a one-step NH3/Ar plasma treatment method was used to obtain few-layered and nitrogen-doped Ti3C2Tx MXene. The structural properties and nitrogen content of MXene were adjusted by controlling the volume ratio of NH3 and Ar in the plasma gas. When the volume ratio of ammonia-to-argon was 6:1, the obtained Ti3C2Tx-N6 had the largest C lattice parameter (13.53 angstrom), the highest nitrogen content (1.57 wt%), and the lowest HER overpotential of 119.17 mV. The XPS results and DFT calculations showed that Ti3C2Tx-N6 introduced the most surfaceadsorbed N, which reduced the energy barrier of electrocatalytic reactions of MXene.