Grain boundaries modulating active sites in rhco porous nanospheres for efficient co2 hydrogenation
文献类型：期刊论文
| 作者 | Zheng, Xusheng1; Lin, Yue2; Pan, Haibin1; Wu, Lihui1; Zhang, Wei1; Cao, Linlin1; Zhang, Jing3; Zheng, Lirong3; Yao, Tao1 |
| 刊名 | Nano research
 |
| 出版日期 | 2018-05-01 |
| 卷号 | 11期号:5页码:2357-2365 |
| 关键词 | Carbon dioxide Rhodium Cobalt Grain boundaries Charge transfer Hydrogenation |
| ISSN号 | 1998-0124 |
| DOI | 10.1007/s12274-017-1841-7 |
| 通讯作者 | Zheng, xusheng(zxs@ustc.edu.cn) ; Yao, tao(yaot@ustc.edu.cn) |
| 英文摘要 | Designing active sites and engineering electronic properties of heterogeneous catalysts are both promising strategies that can be employed to enhance the catalytic activity for co2 hydrogenation. herein, we report rhco porous nanospheres with a high density of accessible grain boundaries as active sites for improved catalytic performance in the hydrogenation of co2 to methanol. the porous nanosphere morphological feature allows for a high population of grain boundaries to be accessible to the reactants, thereby providing sufficient active sites for the catalytic reaction. moreover, in-situ x-ray photoelectron spectroscope (xps) results revealed the creation of negatively charged rh surface atoms that promoted the activation of co2 to generate co2 (delta-) and methoxy intermediates. the obtained rhco porous nanospheres exhibited remarkable low-temperature catalytic activity with a turnover frequency (tofrh) of 612 h(-1), which was 6.1 and 2.5 times higher than that of rh/c and rhco nanoparticles, respectively. this work not only develops an efficient catalyst for co2 hydrogenation, but also demonstrates a potential approach for the modulation of active sites and electronic properties. |
| WOS关键词 | GAS SHIFT REACTION ; CARBON-DIOXIDE ; METHANOL SYNTHESIS ; DEFECT CHEMISTRY ; LATTICE STRAIN ; SOLID-STATE ; CATALYSTS ; SURFACES ; NANOCRYSTALS ; REDUCTION |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| WOS类目 | Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied |
| 语种 | 英语 |
| WOS记录号 | WOS:000431999700004 |
| 出版者 | TSINGHUA UNIV PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177555 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Zheng, Xusheng; Yao, Tao |
| 作者单位 | 1.Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Anhui, Peoples R China 2.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China 3.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Xusheng,Lin, Yue,Pan, Haibin,et al. Grain boundaries modulating active sites in rhco porous nanospheres for efficient co2 hydrogenation[J]. Nano research,2018,11(5):2357-2365. |
| APA | Zheng, Xusheng.,Lin, Yue.,Pan, Haibin.,Wu, Lihui.,Zhang, Wei.,...&Yao, Tao.(2018).Grain boundaries modulating active sites in rhco porous nanospheres for efficient co2 hydrogenation.Nano research,11(5),2357-2365. |
| MLA | Zheng, Xusheng,et al."Grain boundaries modulating active sites in rhco porous nanospheres for efficient co2 hydrogenation".Nano research 11.5(2018):2357-2365. |
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来源：高能物理研究所
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