DICP OpenIR
Surface Assistant Charge Separation in PEC Cu2S-Ni/Cu2O Cathode
Zhang, Wan1; Chen, Ruotian2; Yin, Zhiguang1; Wang, Xinyu1; Wang, Zenglin1; Fan, Fengtao2; Ma, Yi1
Corresponding AuthorMa, Yi(mayi@snnu.edu.cn)
Keywordphotoelectrocatalysis H-2 evolution cuprous oxide charge dynamics surface charge separation
Source PublicationACS APPLIED MATERIALS & INTERFACES
2019-09-18
ISSN1944-8244
DOI10.1021/acsami.9b11976
Volume11Issue:37Pages:34000-34009
Funding ProjectNational Natural Science Foundation of China[21603134] ; Natural Science Basic Research Plan in Shaanxi Province of China[2016JQ2023] ; Open Fund of State Key Laboratory of Catalysis[N-17-06]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Basic Research Plan in Shaanxi Province of China ; Natural Science Basic Research Plan in Shaanxi Province of China ; Open Fund of State Key Laboratory of Catalysis ; Open Fund of State Key Laboratory of Catalysis ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Basic Research Plan in Shaanxi Province of China ; Natural Science Basic Research Plan in Shaanxi Province of China ; Open Fund of State Key Laboratory of Catalysis ; Open Fund of State Key Laboratory of Catalysis ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Basic Research Plan in Shaanxi Province of China ; Natural Science Basic Research Plan in Shaanxi Province of China ; Open Fund of State Key Laboratory of Catalysis ; Open Fund of State Key Laboratory of Catalysis ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Basic Research Plan in Shaanxi Province of China ; Natural Science Basic Research Plan in Shaanxi Province of China ; Open Fund of State Key Laboratory of Catalysis ; Open Fund of State Key Laboratory of Catalysis
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS KeywordHIGHLY EFFICIENT PHOTOCATHODE ; PHOTOELECTROCHEMICAL CELL ; CU2O PHOTOCATHODES ; NANOWIRE ARRAYS ; WATER ; TIO2 ; COCATALYSTS ; PERFORMANCE ; ABSORPTION ; OXIDATION
AbstractFabrication of a high efficiency photocathode is a challenging issue in photoelectrocatalysis (PEC). In this work, a Cu2S-Ni/Cu2O photocathode was constructed via electrodeposition followed by a two-step overlayer deposition procedure including direct-current magnetron sputtering (DCMS) and ion exchange reaction. We found that the presence of Ni in the inner-layer could not only affect the morphology but also enhance the formation rate of the outerlayer Cu2S. The XPS results indicate that the Ni exist as NiOx instead of Ni-0. The photocurrent of Cu2S-Ni/Cu2O achieved 2 times of it on the pristine Cu2O. The charge dynamic characterizations, including electrochemical impedance spectroscopy (EIS), Tafel slopes, and photoluminescence (PL) spectra, demonstrated that the Ni can promote the hydrogen evolution reaction follow the Heyrovsky reaction, while Cu2S shows a crucial role on the surface charge separation. At last, surface photovoltage microscopy (SPVM) technology was used to reveal the function of each overlayer. It gives direct evidence for the charge transportation pathway in the system and explains the function of each component.
Language英语
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Basic Research Plan in Shaanxi Province of China ; Natural Science Basic Research Plan in Shaanxi Province of China ; Open Fund of State Key Laboratory of Catalysis ; Open Fund of State Key Laboratory of Catalysis ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Basic Research Plan in Shaanxi Province of China ; Natural Science Basic Research Plan in Shaanxi Province of China ; Open Fund of State Key Laboratory of Catalysis ; Open Fund of State Key Laboratory of Catalysis ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Basic Research Plan in Shaanxi Province of China ; Natural Science Basic Research Plan in Shaanxi Province of China ; Open Fund of State Key Laboratory of Catalysis ; Open Fund of State Key Laboratory of Catalysis ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Basic Research Plan in Shaanxi Province of China ; Natural Science Basic Research Plan in Shaanxi Province of China ; Open Fund of State Key Laboratory of Catalysis ; Open Fund of State Key Laboratory of Catalysis
WOS IDWOS:000487179900050
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/172701
Collection中国科学院大连化学物理研究所
Corresponding AuthorMa, Yi
Affiliation1.Shaanxi Normal Univ, Sch Chem & Chem Engn, Minist Educ, Key Lab Appl Surface & Colloid Chem, Xian 710119, Shaanxi, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Collaborat Innovat Ctr Chem Energy Mat iChEM, State Key Lab Catalysis,Dalian Natl Lab Clean Ene, Zhongshan Rd 457, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Wan,Chen, Ruotian,Yin, Zhiguang,et al. Surface Assistant Charge Separation in PEC Cu2S-Ni/Cu2O Cathode[J]. ACS APPLIED MATERIALS & INTERFACES,2019,11(37):34000-34009.
APA Zhang, Wan.,Chen, Ruotian.,Yin, Zhiguang.,Wang, Xinyu.,Wang, Zenglin.,...&Ma, Yi.(2019).Surface Assistant Charge Separation in PEC Cu2S-Ni/Cu2O Cathode.ACS APPLIED MATERIALS & INTERFACES,11(37),34000-34009.
MLA Zhang, Wan,et al."Surface Assistant Charge Separation in PEC Cu2S-Ni/Cu2O Cathode".ACS APPLIED MATERIALS & INTERFACES 11.37(2019):34000-34009.
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