文献类型：期刊文献

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

作者：Fan, Mengmeng[1,2,6] Wang, Zeming[3] Zhao, Yuying[2] Yuan, Qixin[1] Cui, Jian[4] Raj, Jithu[5] Sun, Kang[2] Wang, Ao[2] Wu, Jingjie[5] Sun, Hao[2] Li, Bei[2] Wang, Liang[3,7] Jiang, Jianchun[2,8]

第一作者：Fan, Mengmeng

通信作者：Fan, MM[1];Wang, L[2];Jiang, JC[3]

机构：[1]Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Int Innovat Ctr Forest Chem & Mat, Nanjing, Peoples R China;[2]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Key Lab Biomass Energy & Mat, Nanjing, Jiangsu, Peoples R China;[3]Shanghai Univ, Inst Nanochem & Nanobiol, Sch Environm & Chem Engn, Shanghai, Peoples R China;[4]Nanjing Univ Sci & Technol, Chemicobiol & Funct Mat Inst, Nanjing, Peoples R China;[5]Univ Cincinnati, Dept Chem & Environm Engn, Cincinnati, OH USA;[6]Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Int Innovat Ctr Forest Chem & Mat, Nanjing 210037, Peoples R China;[7]Shanghai Univ, Inst Nanochem & Nanobiol, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China;[8]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China

年份：0

外文期刊名：CARBON ENERGY

收录：;EI(收录号：20225113265352);Scopus(收录号：2-s2.0-85142674102);WOS:【SCI-EXPANDED(收录号:WOS:000894823300001)】；

基金：National Natural Science Foundation of China, Grant/Award Numbers: 51902162, 21901154; the Foundation Research Project of Jiangsu Province, Grant/Award Number: 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, Grant/Award Number: 21PJD022; the Foundation of Jiangsu Key Lab of Biomass Energy and Material, Grant/Award Number: JSBEM-S-202101

语种：英文

外文关键词：efficient electrocatalyst; graphene; H2O2 generation; hexagonal boron nitride; porous heterostructure

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 H2O2 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 H2O2 production rate of up to 762 mmol g(catalyst)(-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-H2O2 conversion.