Selective oxidative coupling of methane to ethane with oxygen using an Au/Zn2Ti3O8 photocatalyst under mild conditions
文献类型：期刊论文
| 作者 | Huang, Qiuying1; Cai, Junjian1; Wei, Fen1; Fan, Yaming2; Liang, Zheng3; Liu, Kunlong1; Lu, Xue Feng1; Ding, Zhengxin1; Wang, Sibo1 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2024-07-06 |
| 页码 | 7 |
| ISSN号 | 2050-7488 |
| DOI | 10.1039/d4ta02049a |
| 通讯作者 | Liu, Kunlong(klliu@fzu.edu.cn) ; Ding, Zhengxin(zxding@fzu.edu.cn) ; Wang, Sibo(sibowang@fzu.edu.cn) |
| 英文摘要 | The photocatalytic selective oxidation of CH4 to value-added higher hydrocarbons presents a promising avenue for the sustainable development of the chemical industry; however, the mild activation and conversion of CH4 remain great challenges. Herein, a novel Au/Zn2Ti3O8 hybrid photocatalyst is assembled from supporting Au nanoparticles (NPs) on the surface of Zn2Ti3O8 nanospheres. The Zn2Ti3O8 semiconductor with Zn2+ active sites drives the CH4 coupling reaction, while the Au NPs promote the separation and migration of charge carriers. When irradiated with a 365 LED light, the 1.0%-Au/Zn2Ti3O8 catalyst exhibits high activity and stability for selective CH4 coupling with O-2, affording an optimal C2H6 yield of 609.49 mu mol g(-1) h(-1) with 80.18% selectivity, which is among the state-of-the-art values under comparable conditions. Besides, the 1.0%-Au/Zn2Ti3O8 sample affords a turnover number (TON) of 239.1 and an apparent quantum efficiency (AQE) of 1.05% at 365 nm. Studies reveal that the Schottky junction interface strongly promotes photoinduced electrons to be transferred to Au from Zn2Ti3O8, realizing directed separation and migration of charge carriers for high photocatalytic activity. Various in situ spectroscopy analyses expose that the key (CH3)-C-center dot species in CH4-to-C2H6 conversion are stabilized by the surface Au sites for the subsequent coupling reaction to form C2H6, which prevents the undesirable overoxidation reaction to afford high C2H6 selectivity. A possible photocatalytic oxidative CH4 coupling mechanism over the Au/Zn2Ti3O8 hybrid is also proposed. |
| WOS关键词 | TIO2 |
| 资助项目 | National Key R&D Program of China[2021YFA1502100] ; National Key R&D Program of China[2022YFE0114800] ; National Natural Science Foundation of China[22372035] ; National Natural Science Foundation of China[22302039] ; National Natural Science Foundation of China[22311540011] ; Science and Technology Project of Fujian Province[2021H6009] |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001273714400001 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China ; Science and Technology Project of Fujian Province |
| 源URL | [http://ir.giec.ac.cn/handle/344007/42419]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Liu, Kunlong; Ding, Zhengxin; Wang, Sibo |
| 作者单位 | 1.Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350116, Peoples R China 2.Fujian Univ Technol, Coll Ecol Environm & Urban Construct, Fuzhou 350118, Peoples R China 3.Chinese Acad Sci, CAS Key Lab Renewable Energy, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Qiuying,Cai, Junjian,Wei, Fen,et al. Selective oxidative coupling of methane to ethane with oxygen using an Au/Zn2Ti3O8 photocatalyst under mild conditions[J]. JOURNAL OF MATERIALS CHEMISTRY A,2024:7. |
| APA | Huang, Qiuying.,Cai, Junjian.,Wei, Fen.,Fan, Yaming.,Liang, Zheng.,...&Wang, Sibo.(2024).Selective oxidative coupling of methane to ethane with oxygen using an Au/Zn2Ti3O8 photocatalyst under mild conditions.JOURNAL OF MATERIALS CHEMISTRY A,7. |
| MLA | Huang, Qiuying,et al."Selective oxidative coupling of methane to ethane with oxygen using an Au/Zn2Ti3O8 photocatalyst under mild conditions".JOURNAL OF MATERIALS CHEMISTRY A (2024):7. |
入库方式： OAI收割
来源：广州能源研究所
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