Oxygen vacancy induced defect dipoles in BiVO4 for photoelectrocatalytic partial oxidation of methane
文献类型：期刊论文
| 作者 | Li, Xianlong1; Wang, Zhiliang1; Sasani, Alireza2; Baktash, Ardeshir1; Wang, Kai1; Lu, Haijiao1; You, Jiakang1; Chen, Peng1; Chen, Ping1; Bao, Yifan1 |
| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2024-10-23 |
| 卷号 | 15期号:1页码:9 |
| DOI | 10.1038/s41467-024-53426-8 |
| 通讯作者 | Wang, Zhiliang(zhiliang.wang@uq.edu.au) ; Wang, Lianzhou(l.wang@uq.edu.au) |
| 英文摘要 | A strong driving force for charge separation and transfer in semiconductors is essential for designing effective photoelectrodes for solar energy conversion. While defect engineering and polarization alignment can enhance this process, their potential interference within a photoelectrode remains unclear. Here we show that oxygen vacancies in bismuth vanadate (BiVO4) can create defect dipoles due to a disruption of symmetry. The modified photoelectrodes exhibit a strong correlation between charge separation and transfer capability and external electrical poling, which is not seen in unmodified samples. Applying poling at -150 Volt boosts charge separation and transfer efficiency to over 90%. A photocurrent density of 6.3 mA cm-2 is achieved on the photoelectrode after loading with a nickel-iron oxide-based cocatalyst. Furthermore, using generated holes for methane partial oxidation can produce methanol with a Faradaic efficiency of approximately 6%. These findings provide valuable insights into the photoelectrocatalytic conversion of greenhouse gases into valuable chemical products. The design of effective photoelectrodes for solar energy conversion relies on optimizing charge separation and transfer, which remain a challenge. In this study, the authors demonstrate that an external poling treatment can create a built-in electric field in bismuth vanadate photoelectrodes, thereby facilitating efficient charge transport for water oxidation and methane conversion. |
| 资助项目 | Australian Research Council[DE210100930] ; Australian Research Council[DE230101712] ; Australian Research Council[DP200101900] ; Australian Research Council[DP230100462] ; Australian Research Council[FT230100251] ; Australian Research Council[FL190100139] ; Australian Research Council through its DECRA ; UQ Graduate School |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:001341113300024 |
| 出版者 | NATURE PORTFOLIO |
| 资助机构 | Australian Research Council ; Australian Research Council through its DECRA ; UQ Graduate School |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wang, Zhiliang; Wang, Lianzhou |
| 作者单位 | 1.Univ Queensland, Australian Inst Bioengn & Nanotechnol, Nanomat Ctr, Sch Chem Engn, St Lucia, Qld 4072, Australia 2.Univ Liege, CESAM, QMAT, Phys Theor Mat, Liege, Belgium 3.Univ Wollongong, Inst Superconducting & Elect Mat, Fac Engn & Informat Sci, Wollongong, NSW 2500, Australia 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 5.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xianlong,Wang, Zhiliang,Sasani, Alireza,et al. Oxygen vacancy induced defect dipoles in BiVO4 for photoelectrocatalytic partial oxidation of methane[J]. NATURE COMMUNICATIONS,2024,15(1):9. |
| APA | Li, Xianlong.,Wang, Zhiliang.,Sasani, Alireza.,Baktash, Ardeshir.,Wang, Kai.,...&Wang, Lianzhou.(2024).Oxygen vacancy induced defect dipoles in BiVO4 for photoelectrocatalytic partial oxidation of methane.NATURE COMMUNICATIONS,15(1),9. |
| MLA | Li, Xianlong,et al."Oxygen vacancy induced defect dipoles in BiVO4 for photoelectrocatalytic partial oxidation of methane".NATURE COMMUNICATIONS 15.1(2024):9. |
入库方式： OAI收割
来源：金属研究所
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