文献类型：期刊文献

中文题名：Porous heterostructure of graphene/hexagonal boron nitride as an efficient electrocatalyst for hydrogen peroxide generation

作者：Mengmeng Fan[1,2] Zeming Wang[3] Yuying Zhao[2] Qixin Yuan[1] Jian Cui[4] Jithu Raj[5] Kang Sun[2] Ao Wang[2] Jingjie Wu[5] Hao Sun[2] Bei Li[2] Liang Wang[3] Jianchun Jiang[2]

第一作者：Mengmeng Fan

机构：[1]Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,International Innovation Center for Forest Chemicals and Materials,College of Chemical Engineering,Nanjing Forestry University,Nanjing,China;[2]Key Lab of Biomass Energy and Material,Jiangsu Province,Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,Institute of Chemical Industry of Forest Products,Chinese Academy of Forestry,Nanjing,China;[3]School of Environmental and Chemical Engineering,Institute of Nanochemistry and Nanobiology,Shanghai University,Shanghai,China;[4]Chemicobiology and Functional Materials Institute,Nanjing University of Science and Technology,Nanjing,China;[5]Department of Chemical and Environmental Engineering,University of Cincinnati,Cincinnati,Ohio,USA

年份：2023

卷号：5

期号：5

起止页码：138-151

中文期刊名：碳能源(英文)

外文期刊名：Carbon Energy

收录：Scopus;CSCD:【CSCD2023_2024】；

基金：supported by the“National Natural Science Foundation of China (Nos.51902162,21901154)”;the FoundationResearch Project of Jiangsu Province (BK20221338);Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,International Innovation Center for Forest Chemicals and Materials,Nanjing Forestry University,merit-based funding for Nanjing innovation and technology projects,Shanghai Pujiang Program (21PJD022);the Foundation of Jiangsu Key Lab of Biomass Energy and Material (JSBEM-S-202101).

语种：英文

中文关键词：efficient electrocatalyst;graphene;H_(2)O_(2)generation;hexagonal boron nitride;porous heterostructure

分类号：TB3

摘要：Compared with the traditional heteroatom doping,employing heterostructure is a new modulating approach for carbon-based electrocatalysts.Herein,a facile ball milling-assisted route is proposed to synthesize porous carbon materials composed of abundant graphene/hexagonal boron nitride(G/h-BN)heterostructures.Metal Ni powder and nanoscale h-BN sheets are used as a catalytic substrate/hard template and“nucleation seed”for the formation of the heterostructure,respectively.As-prepared G/h-BN heterostructures exhibit enhanced electrocatalytic activity toward H_(2)O_(2) generation with 86%-95%selectivity at the range of 0.45-0.75 V versus reversible hydrogen electrode(RHE)and a positive onset potential of 0.79 versus RHE(defined at a ring current density of 0.3 mA cm^(-2))in the alkaline solution.In a flow cell,G/h-BN heterostructured electrocatalyst has a H_(2)O_(2) production rate of up to 762 mmol gcatalyst^(-1) h^(-1) and Faradaic efficiency of over 75%during 12 h testing,superior to the reported carbon-based electrocatalysts.The density functional theory simulation suggests that the B atoms at the interface of the G/h-BN heterostructure are the key active sites.This research provides a new route to activate carbon catalysts toward highly active and selective O_(2)-to-H_(2)O_(2) conversion.