摘要
采用简单的沉淀-煅烧工艺合成了B-Co_(3)O_(4)Nano-particles(NPs),研究了B-Co_(3)O_(4)NPs电催化硝酸盐还原合成氨(NitrRR)的性能。研究发现:在含0.1 mol/L NaNO_(3)的NaOH(1 mol/L)溶液中进行电催化反应,B-Co_(3)O_(4)NPs具有较高的电催化活性。当电压在-0.8 V(vs.RHE)时,获得20 mg/(h·cm^(2))的NH_(3)产率和94%的法拉效应(FE)。当电压在-0.6 V(vs.RHE)时,获得17.2 mg/(h·cm^(2))的NH_(3)产率和95%的FE。电极材料B-Co_(3)O_(4)NPs优异的电化学性能得益于B-Co_(3)O_(4)NPs中的B—O键在电催化过程中能有效抑制析氢反应。较低的结晶度和特殊的多孔结构有效促进了B-Co_(3)O_(4)NPs对NO_(3)^(-)的吸附性和还原活性,也促进了电子的传输与转移过程。
A simple precipitation calcination process was used to synthesize B-Co_(3)O_(4)NPs and apply them as elec⁃trocatalytic reduction of nitrate by ammonia.Research has found that B-Co_(3)O_(4)NPs have high electrocatalytic activi⁃ty and when the voltage is-0.8(V vs.RHE).It attains an impressive NH_(3)yield of 20 mg/(h·cm^(2))and 94%(FE).In NaOH(1 mol/L)solution containing 0.1 mol/L NaNO_(3).When the voltage is-0.6 V(vs.RHE),it cor⁃responds to a NH_(3)yield of 17.2 mg/(h·cm^(2))and 95%FE.The excellent electrochemical performance of electrode material B-Co_(3)O_(4)NPs is attributed to the effective inhibition of hydrogen evolution reaction by B—O in the electro⁃catalytic process.The low crystallinity and special porous structure of B-Co_(3)O_(4)NPs effectively improve the adsorp⁃tion and reduction activity of NO_(3)^(-),promoting electron transfer and transfer.
作者
何景婷
祁贵生
杨琨
纪财利
贾裕胜
郭豫晋
张蓉蓉
李宁
王雅宁
曾中宇
樊小龙
HE Jingting;QI Guisheng;YANG Kun;JI Caili;JIA Yusheng;GUO Yujin;ZHANG Rongrong;LI Ning;WANG Yaning;ZENG Zhongyu;FAN Xiaolong(Shanxi Province Key Laboratory of Chemical Process Intensification/School of Chemical Engineering and Technology,North University of China,Taiyuan 030051,China;Department of Science,Taiyuan Institute of Technology,Taiyuan 030008,China)
出处
《华南师范大学学报（自然科学版）》
CAS
北大核心
2024年第1期36-43,共8页
Journal of South China Normal University(Natural Science Edition)
基金
山西省科技攻关计划项目(202203021222284)。
作者简介
通信作者:祁贵生,Email:zbdxqgs@126.com。
