Efficient Promotion of Anatase TiO(2) Photocatalysis via Bifunctional Surface-Terminating Ti-O-B-N Structures

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	Efficient Promotion of Anatase TiO(2) Photocatalysis via Bifunctional Surface-Terminating Ti-O-B-N Structures
	G. Liu; C. H. Sun; L. N. Cheng; Y. G. Jin; H. F. Lu; L. Z. Wang; S. C. Smith; G. Q. Lu; H. M. Cheng
	2009
发表期刊	Journal of Physical Chemistry C
ISSN	1932-7447
卷号	113 期号:28 页码:12317-12324
摘要	The surface structures of doped semiconductor photocatalysts play a vital role in determining visible light absorbance, transfer and redox potentials of charge carriers, as well as the inhibition of recombination. We examine the photocatalysis of anatase TiO(2) with surface terminating Ti-O-B-N structures from both experimental and computational perspectives. This codoped titania system shows much better photocatalytic activity in generating center dot OH radical species and degrading organic pollutants in comparison with B-doped anatase titania. We present indicative evidence that the Ti-O-B-N surface structures can exhibit bifunctionality in promoting photocatalysis, (i) supplying partially occupied localized states attributed to B-N coupling with spectral distribution that is advantageous for enhancing visible light absorption and (ii) acting as photocatalytic "hot sites" to support localization and separation of charge carriers at the surface. These results offer important implications for designing highly efficient photocatalysts based on codoping strategies.
部门归属	[sun, chenghua; smith, sean c.] univ queensland, ctr computat mol sci, australia inst bioengn & nanotechnol, st lucia, qld 4072, australia. [liu, gang; lu, haofeng; cheng, hui-ming] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [liu, gang; sun, chenghua; cheng, lina; jin, yonggang; wang, lianzhou; lu, gao qing] univ queensland, arc ctr excellence funct nanomat, sch engn, st lucia, qld 4072, australia.;smith, sc (reprint author), univ queensland, ctr computat mol sci, australia inst bioengn & nanotechnol, st lucia, qld 4072, australia;s.smith@uq.edu.au maxlu@uq.edu.au cheng@imr.ac.cn
关键词	Visible-light Irradiation Electron-paramagnetic-resonance Doped Titanium-dioxide Codoped Tio2 Aqueous-solutions Nanotube Arrays O-2 Evolution Rutile Tio2 Solar-cells Thin-films
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32079
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. Liu,C. H. Sun,L. N. Cheng,et al. Efficient Promotion of Anatase TiO(2) Photocatalysis via Bifunctional Surface-Terminating Ti-O-B-N Structures[J]. Journal of Physical Chemistry C,2009,113(28):12317-12324.
APA	G. Liu.,C. H. Sun.,L. N. Cheng.,Y. G. Jin.,H. F. Lu.,...&H. M. Cheng.(2009).Efficient Promotion of Anatase TiO(2) Photocatalysis via Bifunctional Surface-Terminating Ti-O-B-N Structures.Journal of Physical Chemistry C,113(28),12317-12324.
MLA	G. Liu,et al."Efficient Promotion of Anatase TiO(2) Photocatalysis via Bifunctional Surface-Terminating Ti-O-B-N Structures".Journal of Physical Chemistry C 113.28(2009):12317-12324.