Sn Dopants with Synergistic Oxygen Vacancies Boost CO2 Electroreduction on CuO Nanosheets to CO at Low Overpotential
文献类型：期刊论文
| 作者 | Zhong, Xiaohui3; Liang, Shujie3; Yang, Tingting3; Zeng, Gongchang1; Zhong, Zuqi3; Deng, Hong3; Zhang, Lei4; Sun, Xueliang2 |
| 刊名 | ACS NANO
 |
| 出版日期 | 2022-10-18 |
| 页码 | 10 |
| 关键词 | CO2 electroreduction high selectivity low overpotential oxygen vacancy Vo-CuO(Sn) nanosheets |
| ISSN号 | 1936-0851 |
| DOI | 10.1021/acsnano.2c08436 |
| 通讯作者 | Zeng, Gongchang(gc.zeng@mail.utoronto.ca) ; Deng, Hong(dengh2016@scut.edu.cn) ; Zhang, Lei(lei.zhang@szu.edu.cn) ; Sun, Xueliang(xsun9@uwo.ca) |
| 英文摘要 | Using the electrochemical CO2 reduction reaction (CO2RR) with Cu-based electrocatalysts to achieve carbon neutral cycles remains a significant challenge because of its low selectivity and poor stability. Modulating the surface electron distribution by defects engineering or doping can effectively improve CO2RR performance. Herein, we synthesize the electrocatalyst of Vo-CuO(Sn) nanosheets containing oxygen vacancies and Sn dopants for application in CO2RR-to-CO. Density functional theory calculations confirm that the incorporation of oxygen vacancies and Sn atoms substantially reduces the energy barrier for *COOH and *CO intermediate formation, which results in the high efficiency, low over potential, and superior stability of the CO2RR to CO conversion. This electrocatalyst possesses a high Faraday efficiency (FE) of 99.9% for CO at a low overpotential of 420 mV and a partial current density of up to 35.22 mA cm-2 at -1.03 V versus reversible hydrogen electrode (RHE). The FECO of Vo-CuO(Sn) could retain over 95% within a wide potential area from -0.48 to -0.93 V versus RHE. Moreover, we obtain long-term stability for more than 180 h with only a slight decay in its activity. Therefore, this work provides an effective route for designing environmentally friendly electrocatalysts to improve the selectivity and stability of the CO2RR to CO conversion. |
| WOS关键词 | EFFICIENT ELECTROCHEMICAL REDUCTION ; CARBON-DIOXIDE |
| 资助项目 | National Key Research and Development Program of China[2019YFA1805902] ; National Key Research and Development Program of China[2019YFA0210402] ; National Natural Science Foundation of China[22075203] ; Natural Sciences and Engineering Research Council of Canada (NSERC) , Canada Research Chair (CRC) Program ; Canada Foundation for Innovation (CFI) ; South China University of Technology and Guangzhou Insitute of Energy Conversion |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000875921400001 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Natural Sciences and Engineering Research Council of Canada (NSERC) , Canada Research Chair (CRC) Program ; Canada Foundation for Innovation (CFI) ; South China University of Technology and Guangzhou Insitute of Energy Conversion |
| 源URL | [http://ir.giec.ac.cn/handle/344007/37704]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Zeng, Gongchang; Deng, Hong; Zhang, Lei; Sun, Xueliang |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China 2.Univ Western Ontario, Dept Mech & Mat Engn, London, ON N6A 5B9, Canada 3.South China Univ Technol, Sch Environm & Energy, Guangdong Prov Key Lab Solid Wastes Pollut Control, Guangzhou 510006, Guangdong, Peoples R China 4.Shenzhen Univ, Coll Chem & Environm Engn, Shenzhen 518060, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhong, Xiaohui,Liang, Shujie,Yang, Tingting,et al. Sn Dopants with Synergistic Oxygen Vacancies Boost CO2 Electroreduction on CuO Nanosheets to CO at Low Overpotential[J]. ACS NANO,2022:10. |
| APA | Zhong, Xiaohui.,Liang, Shujie.,Yang, Tingting.,Zeng, Gongchang.,Zhong, Zuqi.,...&Sun, Xueliang.(2022).Sn Dopants with Synergistic Oxygen Vacancies Boost CO2 Electroreduction on CuO Nanosheets to CO at Low Overpotential.ACS NANO,10. |
| MLA | Zhong, Xiaohui,et al."Sn Dopants with Synergistic Oxygen Vacancies Boost CO2 Electroreduction on CuO Nanosheets to CO at Low Overpotential".ACS NANO (2022):10. |
入库方式： OAI收割
来源：广州能源研究所
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