文献类型：期刊文献

英文题名：Epitaxially Grown Porous Heterostructure of Hexagonal Boron Nitride/Graphene as Efficient Electrocatalyst for H2o2Generation

作者：Fan, Mengmeng[1,2,3] Wang, Zeming[4,5] Zhao, Yuying[2,3] Yuan, Qixin[1] Cui, Jian[5] Sun, Kang[2,3] Wang, Ao[2,3] Wang, Liang[4] Jianchun, Jiang[5]

第一作者：Fan, Mengmeng

机构：[1] Jiangsu Co-Innovation Center of Efficient Processing, Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China; [2] Key Lab of Biomass Energy and Material, Jiangsu Province, China; [3] Jiangsu Co-Innovation Center of Efficient Processing, Utilization of Forest Resources, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing, 210042, China; [4] Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China; [5] Chemicobiology and Functional Materials Institute, Nanjing University of Science and Technology, Nanjing, 210094, China

年份：2022

外文期刊名：SSRN

收录：EI(收录号：20220088643)

语种：英文

外文关键词：Ball milling - Boron nitride - Density functional theory - Electrocatalysts - III-V semiconductors - Nitrides

摘要：Herein, a facile route to synthesize porous boron nitride/graphene catalyst (pBN/pC) composed of abundant hexagonal boron nitride/graphene (h-BN/G) heterostructure is proposed by ball milling-assisted epitaxial growth process. Ni powder and pBN is used as catalytic substrate/hard template and "nucleation seeds" for epitaxial growth of heterostructure, respectively. The pBN/pC exhibits enhanced electrocatalytic activity toward H2O2generation including 86%-95% selectivity at the range of 0.45-0.75 V vsreversible hydrogen electrode(RHE), the positively shifted onset potential of 0.79 vs RHE (at ring current density of 0.3 mA cm-2) in alkaline solution.In a flow cell, the H2O2production rate is up to 762mmol gcatalyst-1h-1with stable Faraday efficiency (over 70%) during 12 h testing, superior to the reported carbon-based electrocatalysts. Thedensity functional theorysimulation suggests the B atoms at the interface of h-BN/Gheterostructureare the key active sites. Therefore, this research provides a route for fabricating porous heterostructure. ? 2022, The Authors. All rights reserved.