Enhanced Photoactivity of Oxygen-Deficient Anatase TiO(2) Sheets with Dominant {001} Facets

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	Enhanced Photoactivity of Oxygen-Deficient Anatase TiO(2) Sheets with Dominant {001} Facets
	G. Liu; H. G. Yang; X. W. Wang; L. N. Cheng; H. F. Lu; L. Z. Wang; G. Q. Lu; H. M. Cheng
	2009
发表期刊	Journal of Physical Chemistry C
ISSN	1932-7447
卷号	113 期号:52 页码:21784-21788
摘要	Constructing photocatalytically favorable Surface structure in synthesizing photocatalysts plays an important role in enhancing the photocatalytic activity of semiconductor photocatalysts. In this report, oxygen-deficient anatase TiO(2) sheets with dominant {001} facets were synthesized via a facile one-pot hydrothermal route with solid metallic titanium diboride as precursor. In contrast to anatase TiO(2) sheets with dominant {001} facets free of oxygen deficiency and surface fluorine, anatase TiO(2) sheets with oxygen deficiency and surface fluorine are Subject to obvious surface reconstruction as evidenced by two new Raman-active modes at 155 and 171 cm(-1) and the weakened B(1g) mode at 397 cm(-1). Further analysis based on X-ray photoelectron spectroscopy (XPS) spectra of Pt 4f and F Is provided a clear evidence for the greatly strengthened interaction between Pt-loaded and TiO(2) matrix as a result of a special electron-transfer process on the reconstructed Surface structure of TiO(2) with both oxygen deficiency and fluorine. Importantly, the reconstructed surface structure as well as the strengthened interaction between Pt-loaded and TiO(2) matrix can substantially enhance the hydrogen evolution rate from photocatalytic water splitting reactions.
部门归属	[liu, gang; cheng, lina; wang, lianzhou; lu, gao qing (max)] univ queensland, sch engn, arc ctr excellence funct nanomat, brisbane, qld 4072, australia. [liu, gang; cheng, lina; wang, lianzhou; lu, gao qing (max)] univ queensland, australian inst bioengn & nanotechnol, brisbane, qld 4072, australia. [liu, gang; wang, xuewen; lu, haofeng; cheng, hui-ming] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [yang, hua gui] e china univ sci & technol, sch mat sci & engn, minist educ, key lab ultrafine mat, shanghai 200237, peoples r china.;lu, gq (reprint author), univ queensland, sch engn, arc ctr excellence funct nanomat, brisbane, qld 4072, australia;maxlu@uq.edu.au cheng@imr.ac.cn
关键词	Visible-light Photocatalytic Activity Titanium(Iv) Oxide Thin-films Doped Tio2 Percentage Titania Surface Fabrication Mechanisms
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32087
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. Liu,H. G. Yang,X. W. Wang,et al. Enhanced Photoactivity of Oxygen-Deficient Anatase TiO(2) Sheets with Dominant {001} Facets[J]. Journal of Physical Chemistry C,2009,113(52):21784-21788.
APA	G. Liu.,H. G. Yang.,X. W. Wang.,L. N. Cheng.,H. F. Lu.,...&H. M. Cheng.(2009).Enhanced Photoactivity of Oxygen-Deficient Anatase TiO(2) Sheets with Dominant {001} Facets.Journal of Physical Chemistry C,113(52),21784-21788.
MLA	G. Liu,et al."Enhanced Photoactivity of Oxygen-Deficient Anatase TiO(2) Sheets with Dominant {001} Facets".Journal of Physical Chemistry C 113.52(2009):21784-21788.