Surface Assistant Charge Separation in PEC Cu2S-Ni/Cu2O Cathode
文献类型：期刊论文
| 作者 | Zhang, Wan2; Chen, Ruotian1; Yin, Zhiguang2; Wang, Xinyu2; Wang, Zenglin2; Fan, Fengtao1; Ma, Yi2 |
| 刊名 | ACS APPLIED MATERIALS & INTERFACES
 |
| 出版日期 | 2019-09-18 |
| 卷号 | 11期号:37页码:34000-34009 |
| 关键词 | photoelectrocatalysis H-2 evolution cuprous oxide charge dynamics surface charge separation |
| ISSN号 | 1944-8244 |
| DOI | 10.1021/acsami.9b11976 |
| 通讯作者 | Ma, Yi(mayi@snnu.edu.cn) |
| 英文摘要 | Fabrication 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. |
| WOS关键词 | HIGHLY EFFICIENT PHOTOCATHODE ; PHOTOELECTROCHEMICAL CELL ; CU2O PHOTOCATHODES ; NANOWIRE ARRAYS ; WATER ; TIO2 ; COCATALYSTS ; PERFORMANCE ; ABSORPTION ; OXIDATION |
| 资助项目 | National 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] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000487179900050 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | 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 ; 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 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/172700]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Ma, Yi |
| 作者单位 | 1.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 2.Shaanxi Normal Univ, Sch Chem & Chem Engn, Minist Educ, Key Lab Appl Surface & Colloid Chem, Xian 710119, Shaanxi, Peoples R China |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：大连化学物理研究所
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