Cuo/tio2 heterojunction composites: an efficient photocatalyst for selective oxidation of methanol to methyl formate
文献类型：期刊论文
| 作者 | Shi, Quanquan1,2; Ping, Guicheng1; Wang, Xiaojia1; Xu, Hui1; Li, Jingmei1; Cui, Jiaqi1; Abroshan, Hadi3,4,5; Ding, Hongjing1; Li, Gao2 |
| 刊名 | Journal of materials chemistry a
 |
| 出版日期 | 2019-02-07 |
| 卷号 | 7期号:5页码:2253-2260 |
| ISSN号 | 2050-7488 |
| DOI | 10.1039/c8ta09439j |
| 通讯作者 | Xu, hui(yqfxxuhui@163.com) ; Abroshan, hadi(hadi.abroshan@chemistry.gatech.edu) ; Li, gao(gaoli@dicp.ac.cn) |
| 英文摘要 | This study demonstrates the synthesis of an efficient photocatalyst, cuo/tio2 heterojunction, for selective aerobic photo-oxidation of methanol to methyl formate. the cuo nanoparticles (size: 3.5 +/- 1.0 nm) are particularly deposited at the {101} facet of anatase tio2 nanosheets to minimize recombination of photo-generated electrons/holes. the photocatalysts are characterized by different methods, including powder x-ray diffraction (xrd), transmission electron microscopy (tem), uv-vis spectroscopy, x-ray photoelectron spectroscopy (xps), photoluminescence spectroscopy, and hydrogen temperature-programmed reduction (h-2-tpr). the heterojunction catalysts exhibit an excellent photocatalytic performance under mild conditions (i.e., 25-45 degrees c and gas reactions under uv irradiation with a wavelength of 365 nm) for the selective photo-oxidation of methanol using 0.5 vol% oxygen (o-2) as an oxidizing agent. the 5 wt% cuo/tio2 photocatalyst exhibits a decent 95% methanol conversion with over 85% selectivity towards the formation of methyl formate. the by-product of the reaction is found to be merely co2, which can be readily eliminated from the product. the formation rate for the methyl formate is 10.8 mmol g(-1) h(-1) at 25 degrees c, which is considerably higher than that for the corresponding cuo and tio2 nanosheets as well as for conventional catalysts. the superior catalytic activity of the cuo/tio2 is associated with its unique electronic structure and the synergistic effects at the interface of the photocatalysts' components. the results of this study offer guidelines for design of a new synthetic strategy for preparation of efficient photocatalysts for selective oxidation of methanol to methyl formate and related reactions. |
| WOS关键词 | ANATASE TIO2 ; GAS-PHASE ; NANOPARTICLES ; CATALYSTS ; H-2 ; PERFORMANCE ; NANOFIBERS ; GENERATION ; REDUCTION ; TITANIA |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Materials Science |
| WOS类目 | Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000457546000032 |
| 出版者 | ROYAL SOC CHEMISTRY |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2372804 |
| 专题 | 大连化学物理研究所 |
| 通讯作者 | Xu, Hui; Abroshan, Hadi; Li, Gao |
| 作者单位 | 1.Inner Mongolia Agr Univ, Coll Sci, Hohhot 010018, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 3.Stanford Univ, Dept Chem Engn, SUNCAT Ctr Interface Sci & Catalysis, Stanford, CA 94305 USA 4.Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA 5.Georgia Inst Technol, Atlanta, GA 30332 USA |
| 推荐引用方式 GB/T 7714 | Shi, Quanquan,Ping, Guicheng,Wang, Xiaojia,et al. Cuo/tio2 heterojunction composites: an efficient photocatalyst for selective oxidation of methanol to methyl formate[J]. Journal of materials chemistry a,2019,7(5):2253-2260. |
| APA | Shi, Quanquan.,Ping, Guicheng.,Wang, Xiaojia.,Xu, Hui.,Li, Jingmei.,...&Li, Gao.(2019).Cuo/tio2 heterojunction composites: an efficient photocatalyst for selective oxidation of methanol to methyl formate.Journal of materials chemistry a,7(5),2253-2260. |
| MLA | Shi, Quanquan,et al."Cuo/tio2 heterojunction composites: an efficient photocatalyst for selective oxidation of methanol to methyl formate".Journal of materials chemistry a 7.5(2019):2253-2260. |
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来源：大连化学物理研究所
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