Bismuth-Based Free-Standing Electrodes for Ambient-Condition Ammonia Production in Neutral Media  

作　　者：Ying Sun Zizhao Deng Xi‑Ming Song Hui Li Zihang Huang Qin Zhao Daming Feng Wei Zhang Zhaoqing Liu Tianyi Ma 

机构地区：[1]Institute of Clean Energy Chemistry,Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials,College of Chemistry,Liaoning University,Shenyang 110036,People’s Republic of China [2]Discipline of Chemistry,University of Newcastle,Callaghan,NSW 2308,Australia [3]Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials,College of Chemistry,Liaoning University,Shenyang 110036,People’s Republic of China [4]School of Chemistry and Chemical Engineering,Guangzhou Key Laboratory for Environmentally Functional Materials and Technology,Guangzhou University,Guangzhou 510006,People’s Republic of China

出　　处：《Nano-Micro Letters》2020年第10期164-175,共12页纳微快报（英文版）

基　　金：financially supported by Liaoning Revitalization Talents Program—Pan Deng Scholars(XLYC1802005);Liaoning BaiQianWan Talents Program;the National Science Fund of Liaoning Province for Excellent Young Scholars;Science and Technology Innovative Talents Support Program of Shenyang(RC180166);Australian Research Council(ARC)through Discovery Early Career Researcher Award(DE150101306)and Linkage Project(LP160100927);Faculty of Science Strategic Investment Funding of University of Newcastle;CSIRO Newcastl Energy Centre。

摘　　要：Electrocatalytic nitrogen reduction reaction is a carbon-free and energy-saving strategy for efficient synthesis of ammonia under ambient conditions.Here,we report the synthesis of nanosized Bi2O3 particles grown on functionalized exfoliated graphene(Bi2O3/FEG)via a facile electrochemical deposition method.The obtained free-standing Bi2O3/FEG achieves a high Faradaic efficiency of 11.2%and a large NH3 yield of 4.21±0.14μgNH3 h^-1 cm^-2 at-0.5 V versus reversible hydrogen electrode in 0.1 M Na2SO4,better than that in the strong acidic and basic media.Benefiting from its strong interaction of Bi 6p band with the N2p orbitals,binder-free characteristic,and facile electron transfer,Bi2O3/FEG achieves superior catalytic performance and excellent long-term stability as compared with most of the previous reported catalysts.This study is significant to design low-cost,high-efficient Bi-based electrocatalysts for electrochemical ammonia synthesis.

关 键 词：N2 reduction Bi2O3 nanoplate ELECTROCATALYSIS FREE-STANDING 

分 类 号：TQ113.266[化学工程—无机化工]