| p-n heterojunctions of Si@WO3 mimicking thylakoid for photoelectrocatalytic CO2 reduction to C2+ products — Morphology control | |
Wan, Wenrui1; Zhang, QL(张巧兰)1 ; Wei, Yan1; Cao, Youzhi1; Hou, Jiaxiu1; Liu, Chunyan1; Hong, Lin1; Gao, H(高红)1; Chen, Jiazang2; Jing, HW(景欢旺)1,2 | |
| 2023-02-15 | |
| Source Publication | Chemical Engineering Journal
 |
| ISSN | 1385-8947 |
| Volume | 454 |
| Abstract | The photoelectrocatalytic reduction of CO2 to high value-added chemicals is considered as one of the most promising technologies for solving both environmental and energy issues of the planet. Here, p-n heterojunction nanowires Si@WO3-x derived from p-silicon wafer modified by tungsten trioxide with different morphologies, including nanosheets (NS), nanobulks (NB) and nanoneedles (NN), were designed and fabricated. The Si@WO3-NS heterojunction gives the highest apparent quantum efficiency of light (0.49 % AQE) excluding the contribution of electrons from anode (>0.4 % QE of nature plant), which is nearly 25 times than that of pure Si NW (0.02 % AQE). The selectivity of multicarbon products (C2+) for Si@WO3-NS catalyst reaches 62.7 %, benefiting from the morphology simulated to the structure of thylakoid in plants. Moreover, the mechanism was proposed and confirmed by operando FT-IR experiments indicating the existence of active species COO−, HCOO−, C−O and C−C, respectively. This engineering design for Si-based material simulated plant cell can firstly produce C2+ chemicals without assistance of copper particles known as good catalyst or co-catalyst for C−C coupling. © 2022 |
| Keyword | Carbon dioxide Catalyst selectivity Cell engineering Environmental technology Heterojunctions Morphology Silicon compounds Silicon wafers Tungsten compounds CO 2 reduction Morphology control P-n heterojunctions Photo-electrocatalysis Photoelectrocatalysis Photoelectrocatalytic Product morphology Sustainable chemistry Thylakoids ]+ catalyst |
| Publisher | Elsevier B.V. |
| DOI | 10.1016/j.cej.2022.140122 |
| Indexed By | EI |
| Language | 英语 |
| EI Accession Number | 20224513072440 |
| EI Keywords | Sustainable chemistry |
| EI Classification Number | 454 Environmental Engineering ; 461.1 Biomedical Engineering ; 714.2 Semiconductor Devices and Integrated Circuits ; 802.2 Chemical Reactions ; 803 Chemical Agents and Basic Industrial Chemicals ; 804 Chemical Products Generally ; 804.2 Inorganic Compounds ; 931.2 Physical Properties of Gases, Liquids and Solids ; 951 Materials Science |
| Original Document Type | Journal article (JA) |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.lzu.edu.cn/handle/262010/498569 |
| Collection | 化学化工学院 |
| Corresponding Author | Zhang, Qiaolan |
| Affiliation | 1.State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Gansu, Lanzhou; 730000, China; 2.State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Shanxi, Taiyuan; 030001, China |
| First Author Affilication | College of Chemistry and Chemical Engineering |
| Corresponding Author Affilication | College of Chemistry and Chemical Engineering |
| Recommended Citation GB/T 7714 | Wan, Wenrui,Zhang, Qiaolan,Wei, Yan,et al. p-n heterojunctions of Si@WO3 mimicking thylakoid for photoelectrocatalytic CO2 reduction to C2+ products — Morphology control[J]. Chemical Engineering Journal,2023,454. |
| APA | Wan, Wenrui.,Zhang, Qiaolan.,Wei, Yan.,Cao, Youzhi.,Hou, Jiaxiu.,...&Jing, Huanwang.(2023).p-n heterojunctions of Si@WO3 mimicking thylakoid for photoelectrocatalytic CO2 reduction to C2+ products — Morphology control.Chemical Engineering Journal,454. |
| MLA | Wan, Wenrui,et al."p-n heterojunctions of Si@WO3 mimicking thylakoid for photoelectrocatalytic CO2 reduction to C2+ products — Morphology control".Chemical Engineering Journal 454(2023). |
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