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Interfacial engineering of the NiSe2/FeSe2 p-p heterojunction for promoting oxygen evolution reaction and electrocatalytic urea oxidation
Ni, Shan1,2; Qu, Hongnan1; Xu, Zihao1,2; Zhu, Xiangyang1,2; Xing, Huifang1,2; Wang, Li1; Yu, Jiemiao1; Liu, Huizhou1,2,3; Chen, Congmei4; Yang, Liangrong1,2,3
2021-12-15
Source PublicationAPPLIED CATALYSIS B-ENVIRONMENTAL
ISSN0926-3373
Volume299Pages:10
AbstractHeterogeneous electrocatalysis usually involves the charge transfer between the surface of electrocatalysts and corresponding reactants. Thus, modulating the surface electron density of electrocatalysts is an effective strategy to boost the electrocatalytic activity of targeted reactions. Herein, the NiSe2/FeSe2 p-p heterojunction is constructed via a simple selenization method for both oxygen evolution reaction (OER) and urea oxidation reaction (UOR). The designed NiSe2/FeSe2 electrocatalyst exhibits a superior activity towards OER, which only requires a low overpotential of 256 mV to reach a current density of 10 mA cm(-2), and surpasses other selenides and even the state-of-the-art RuO2. Impressively, when employed as the UOR electrode, the NiSe2/FeSe2 heterojunction needs only 127 mV overpotential at 50 mA cm(-2), remarkably superior to other selenides and confirming the less energy consumption for UOR. The comprehensive analysis demonstrates that the well-designed built-in electric field at the heterointerface of NiSe2/FeSe2 p-p heterojunction due to the difference of energy levels can expedite the charge transfer and thus strengthen the conductivity of heterojunction electrocatalyst. Moreover, the self-driven electron transfer across the NiSe2/FeSe2 heterointerface can induce local charge redistribution at the interface region, which is beneficial for the adsorption of OH- and urea owing to the electrostatic interaction. Therefore, the designed NiSe2/FeSe2 p-p heterojunction with regulated electronic structure displays extraordinary electrocatalytic activity for both the OER and UOR. This study demonstrates a novel strategy to manipulate the surface/interface charge states of electrocatalysts for improving the catalytic activity of OER and UOR, and provides new guidelines for exploring other superior electrocatalysts.
KeywordOxygen evolution reaction Urea oxidation reaction p-p heterojunction Built-in electric field Local charge redistribution
DOI10.1016/j.apcatb.2021.120638
Language英语
WOS KeywordEFFICIENT ELECTROCATALYST ; SPIN-STATE ; METAL ; NANOSPHERES ; CATALYSTS ; COMPOSITE
Funding ProjectNational Natural Science Foundation of China[21922814] ; National Natural Science Foundation of China[21961160745] ; National Natural Science Foundation of China[21921005] ; National Natural Science Foundation of China[22078333] ; National Natural Science Foundation of China[31961133019] ; Excellent Member in Youth Innovation Promotion Association, Chinese Academy of Sciences[Y202014]
WOS Research AreaChemistry ; Engineering
WOS SubjectChemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
Funding OrganizationNational Natural Science Foundation of China ; Excellent Member in Youth Innovation Promotion Association, Chinese Academy of Sciences
WOS IDWOS:000703890500005
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/50285
Collection中国科学院过程工程研究所
Corresponding AuthorYang, Liangrong
Affiliation1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266061, Peoples R China
4.Natl Supercomp Ctr Shenzhen, Shenzhen 518055, Peoples R China
Recommended Citation
GB/T 7714
Ni, Shan,Qu, Hongnan,Xu, Zihao,et al. Interfacial engineering of the NiSe2/FeSe2 p-p heterojunction for promoting oxygen evolution reaction and electrocatalytic urea oxidation[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2021,299:10.
APA Ni, Shan.,Qu, Hongnan.,Xu, Zihao.,Zhu, Xiangyang.,Xing, Huifang.,...&Yang, Liangrong.(2021).Interfacial engineering of the NiSe2/FeSe2 p-p heterojunction for promoting oxygen evolution reaction and electrocatalytic urea oxidation.APPLIED CATALYSIS B-ENVIRONMENTAL,299,10.
MLA Ni, Shan,et al."Interfacial engineering of the NiSe2/FeSe2 p-p heterojunction for promoting oxygen evolution reaction and electrocatalytic urea oxidation".APPLIED CATALYSIS B-ENVIRONMENTAL 299(2021):10.
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