Photoelectrochemical CO2 reduction to adjustable syngas on grain-boundary-mediated a-Si/TiO2/Au photocathodes with low onset potentials
文献类型：期刊论文
| 作者 | Li, Chengcheng2; Wang, Tuo2; Liu, Bin2; Chen, Mengxin2; Li, Ang2; Zhang, Gong2; Du, Minyong1; Wang, Hui1; Liu, Shengzhong Frank1; Gong, Jinlong2 |
| 刊名 | ENERGY & ENVIRONMENTAL SCIENCE
 |
| 出版日期 | 2019-03-01 |
| 卷号 | 12期号:3页码:923-928 |
| ISSN号 | 1754-5692 |
| DOI | 10.1039/c8ee02768d |
| 通讯作者 | Gong, Jinlong(jlgong@tju.edu.cn) |
| 英文摘要 | A photoelectrochemical (PEC) CO2 reduction reaction (CRR) in an aqueous medium is among the most promising methods to produce renewable fuels with the sun and water as the energy and electron source. But a high negative bias remains a prerequisite to achieve an appreciable conversion at present due to the large overpotential of CO2 reduction. This communication describes a PEC CRR with low onset potential on an amorphous silicon (a-Si) photocathode decorated with grain-boundary-rich gold catalysts. Syngas, with high throughput and desirable CO/H2 ratios such as 1 : 2 and 1 : 1, was produced in a wide PEC range from the equilibrium potential E-0(CO2/CO) of -0.1 V vs. the reversible hydrogen electrode (V-RHE) to as positive as 0.4 V-RHE, leading to a half-cell conversion efficiency of 0.42%. This performance represents the highest half-cell efficiency and lowest onset potential for CO2 reduction ever reported among aqueous PEC cathodes under 1 sun illumination. The a-Si/TiO2/Au photocathodes exhibit excellent stability in a wide potential range, with a high CO mass activity up to 180 ampere per gram of gold at -0.1 V-RHE. Controlling the grain boundary provides powerful potential to adjust the product selectivity in PEC CO2 reduction. |
| WOS关键词 | AMORPHOUS-SILICON PHOTOCATHODES ; CARBON-DIOXIDE ; SOLAR ; ELECTROREDUCTION ; EFFICIENT ; TIO2 ; AU ; CATALYSTS ; LAYER ; PHOTOCATALYSTS |
| 资助项目 | National Key R&D Program of China[2016YFB0600901] ; National Natural Science Foundation of China[21525626] ; National Natural Science Foundation of China[U1463205] ; National Natural Science Foundation of China[U1662111] ; National Natural Science Foundation of China[21722608] ; National Natural Science Foundation of China[51861125104] ; Program of Introducing Talents of Discipline to Universities[B06006] |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000462661900022 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 资助机构 | National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Program of Introducing Talents of Discipline to Universities ; Program of Introducing Talents of Discipline to Universities ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Program of Introducing Talents of Discipline to Universities ; Program of Introducing Talents of Discipline to Universities ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Program of Introducing Talents of Discipline to Universities ; Program of Introducing Talents of Discipline to Universities ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Program of Introducing Talents of Discipline to Universities ; Program of Introducing Talents of Discipline to Universities |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/165768]  |
| 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 | Gong, Jinlong |
| 作者单位 | 1.Chinese Acad Sci, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, iChEM, Dalian 116023, Peoples R China 2.Tianjin Univ, Sch Chem Engn & Technol, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Minist Educ,Key Lab Green Chem Technol, Tianjin 300072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Chengcheng,Wang, Tuo,Liu, Bin,et al. Photoelectrochemical CO2 reduction to adjustable syngas on grain-boundary-mediated a-Si/TiO2/Au photocathodes with low onset potentials[J]. ENERGY & ENVIRONMENTAL SCIENCE,2019,12(3):923-928. |
| APA | Li, Chengcheng.,Wang, Tuo.,Liu, Bin.,Chen, Mengxin.,Li, Ang.,...&Gong, Jinlong.(2019).Photoelectrochemical CO2 reduction to adjustable syngas on grain-boundary-mediated a-Si/TiO2/Au photocathodes with low onset potentials.ENERGY & ENVIRONMENTAL SCIENCE,12(3),923-928. |
| MLA | Li, Chengcheng,et al."Photoelectrochemical CO2 reduction to adjustable syngas on grain-boundary-mediated a-Si/TiO2/Au photocathodes with low onset potentials".ENERGY & ENVIRONMENTAL SCIENCE 12.3(2019):923-928. |
入库方式： OAI收割
来源：大连化学物理研究所
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