Bimetallic MoO3/Ni-N-C Nanoalloys Derived from MOFs for Electrocatalytic Urea Oxidation Reaction

被引：11

作者：

Bao, Yanji ^{[1
]}

Chen, Keju ^{[1
]}

Feng, Zhouhang ^{[1
]}

Ru, Haifeng ^{[1
]}

Guo, Mingliang ^{[1
]}

Chen, Delun ^{[1
]}

Li, Xiaobao ^{[2
]}

Tu, Jinchun ^{[1
]}

Ding, Lei ^{[1
]}

Lai, Xiaoyong ^{[3
]}

机构：

[1] Hainan Univ, Sch Mat Sci & Engn, Haikou 570228, Peoples R China

[2] Hainan Normal Univ, Key Lab Trop Med Resource Chem Minist Educ, Haikou 571158, Hainan, Peoples R China

[3] Ningxia Univ, Sch Chem & Chem Engn, State Key Lab High Efficiency Utilizat Coal & Gree, Yinchuan 750021, Peoples R China

来源：

ACS APPLIED NANO MATERIALS | 2023年 / 6卷 / 13期

基金：

中国国家自然科学基金;

关键词：

electrocatalysts; molybdenum; MoO3; Ni-N-C; local charge distribution; urea oxidationreaction; HYDROGEN EVOLUTION; EFFICIENT; PERFORMANCE; NANOSHEETS; CATALYSTS; ETHANOL;

D O I：

10.1021/acsanm.3c01258

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In electrochemical energy storage and conversion systems,ureaoxidation reaction (UOR) can produce hydrogen and mitigate pollutionfrom urea-rich wastewater in a low-energy manner, whereas the developmentof this technique was limited via a lack of economical and cost-effectiveUOR catalysts. Herein, a unique electrocatalyst of MoO3/Ni-N-C was synthesized from a Mo element-incorporated Ni-MOF byheating under an inert atmosphere. The prepared MoO3/Ni-N-Celectrode shows superior activity toward UOR, which only needs a lowpotential of 1.42 V (vs RHE) at 50 mA cm(-2) in 1.0M KOH with 0.5 M urea. The excellent performance for UOR is attributedto the synergistic effect between molybdenum and nickel, the modulationof the electronic structure for the nickel site by MoO3, accelerating the charge transfer, and tuning the reaction interfaceadsorption energy to enhance electrocatalytic activity. This workprovides strategies and directions for exploring other advanced UORelectrode material designs.

引用

页码：11221 / 11229

页数：9

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