The role of metal oxide interactions: revisiting Pt growth on the TiO2 surface in the process of impregnation method
Jiang, Z; Sun, ZT; Yang, YQ; Chen, SY; Shangguan, WF; Wu, XJ
2017
发表期刊NANOSCALE
ISSN2040-3364
卷号9期号:37页码:14272-14279
文章类型期刊论文
摘要First-principles calculations and experiments with PtOx on TiO2 surfaces were performed together to understand the interactions of metal oxides during the calcination process and their influence on the growth pattern of Pt on the TiO2 surface. Our calculations indicate that PtOx with a high concentration of oxygen binds more strongly to rutile than to anatase, indicating the formation of stronger interactions between Pt oxide and the rutile surface compared with anatase during the calcination stage under an oxidative atmosphere. X-ray photoelectron spectra quantification analysis illustrates that higher amounts of Pt oxide are obtained when impregnation is performed with a rutile support after calcination in comparison with that of anatase. After reduction, the stronger interaction between PtOx and rutile leads to a larger amount of partially charged and highly dispersed Pt nanoclusters on the surface, while the weaker interaction between PtOx and anatase illustrates the dispersion and sintering of higher amounts of metal nanoparticles on the anatase surface. Furthermore, the photocatalytic oxygen evolution test highlights the importance of understanding the interaction between the metal oxide and anatase/rutile for targeted synthesis of the supported catalyst.
关键词Anatase Tio2(101) Surface Thermal-stability Modified Pt/tio2 Clusters Catalysts Nanoparticles Oxidation Gold Support Dehydrogenation
DOI10.1039/c7nr02913f
关键词[WOS]ANATASE TIO2(101) SURFACE ; THERMAL-STABILITY ; MODIFIED PT/TIO2 ; CLUSTERS ; CATALYSTS ; NANOPARTICLES ; OXIDATION ; GOLD ; SUPPORT ; DEHYDROGENATION
收录类别SCI
语种英语
WOS记录号WOS:000411862400044
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/28870
专题中科院上海应用物理研究所2011-2018年
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Jiang, Z,Sun, ZT,Yang, YQ,et al. The role of metal oxide interactions: revisiting Pt growth on the TiO2 surface in the process of impregnation method[J]. NANOSCALE,2017,9(37):14272-14279.
APA Jiang, Z,Sun, ZT,Yang, YQ,Chen, SY,Shangguan, WF,&Wu, XJ.(2017).The role of metal oxide interactions: revisiting Pt growth on the TiO2 surface in the process of impregnation method.NANOSCALE,9(37),14272-14279.
MLA Jiang, Z,et al."The role of metal oxide interactions: revisiting Pt growth on the TiO2 surface in the process of impregnation method".NANOSCALE 9.37(2017):14272-14279.
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