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Wet-Chemistry Strong Metal-Support Interactions in Titania-Supported Au Catalysts
Zhang, Jian; Wang, Hai; Wang, Liang; Ali, Sajjad; Wang, Chengtao; Wang, Lingxiang; Meng, Xiangju; Li, Bo; Su, Dang Sheng; Xiao, Feng-Shou
2019-02-20
Source PublicationJOURNAL OF THE AMERICAN CHEMICAL SOCIETY
ISSN0002-7863
Volume141Issue:7Pages:2975-2983
AbstractClassical strong metal support interactions (SMSI), which play a crucial role in the preparation of supported metal nanoparticle catalysts, is one of the most important concepts in heterogeneous catalysis. The conventional wisdom for construction of classical SMSI involves in redox treatments at high-temperatures by molecular oxygen or hydrogen, sometimes causing sintered metal nanoparticles. before SMSI formation. Herein, we report that the aforementioned issue can be effectively avoided by a wet chemistry methodology. As a typical example, we demonstrate a new concept of wet-chemistry SMSI (wcSMSI) that can be constructed on titania-supported Au nanoparticles (Au/TiO2-wcSMSI), where the key is to employ a redox interaction between Au delta+ and Ti3+ precursors in aqueous solution. The wcSMSI is evidenced by covering Au nanoparticles with the TiOx overlayer, electronic interaction between Au and TiO2, and suppression of CO adsorption on Au nanoparticles. Owing to the wcSMSI, the Au-TiOx interface with an improved redox property is favorable for oxygen activation, accelerating CO oxidation. In addition, the oxide overlayer efficiently stabilizes the Au nanoparticles, achieving sinter-resistant Au/TiO2-wcSMSI catalyst in CO oxidation.
Indexed BySCI
Language英语
WOS IDWOS:000459642000030
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81362
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Zhang, Jian,Wang, Hai,Wang, Liang,et al. Wet-Chemistry Strong Metal-Support Interactions in Titania-Supported Au Catalysts[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2019,141(7):2975-2983.
APA Zhang, Jian.,Wang, Hai.,Wang, Liang.,Ali, Sajjad.,Wang, Chengtao.,...&Xiao, Feng-Shou.(2019).Wet-Chemistry Strong Metal-Support Interactions in Titania-Supported Au Catalysts.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,141(7),2975-2983.
MLA Zhang, Jian,et al."Wet-Chemistry Strong Metal-Support Interactions in Titania-Supported Au Catalysts".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 141.7(2019):2975-2983.
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