Achieving maximum photo-oxidation reactivity of Cs(0.68)Ti(1.83)O(4-x)N(x) photocatalysts through valence band fine-tuning

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	Achieving maximum photo-oxidation reactivity of Cs(0.68)Ti(1.83)O(4-x)N(x) photocatalysts through valence band fine-tuning
	G. Liu; P. Niu; L. Z. Wang; G. Q. Lu; H. M. Cheng
	2011
发表期刊	Catalysis Science & Technology
ISSN	2044-4753
卷号	1 期号:2 页码:222-225
摘要	Does a wider absorption range of the photocatalyst always result in a higher photoreactivity? By investigating a set of Cs(0.68)Ti(1.83)O(4-x)N(x) (x = 0-0.31) photocatalysts with a continuously tuned absorption edge, we found that although the absorption edge of Cs0.68Ti1.83O4-xNx is gradually shifted to the low-energy region with the increase of the nitrogen dopant, the photoreactivity of the photocatalyst in terms of generating the-OH radical does not correspondingly increase under the irradiation of monochromatic light of 254 nm and continuous spectrum of > 300 nm. The fundamental mechanism of the anion dopant enhanced photocatalytic activity through the interplay of three key factors-absorbance, oxidative potential and mobility of charge carriers-is proposed to explain the observed photocatalytic activity change.
部门归属	[liu, gang; niu, ping; cheng, hui-ming] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [wang, lianzhou; lu, gao qing (max)] univ queensland, arc ctr excellence funct nanomat, sch engn, brisbane, qld 4072, australia. [wang, lianzhou; lu, gao qing (max)] univ queensland, australian inst bioengn & nanotechnol, brisbane, qld 4072, australia.;liu, g (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;cheng@imr.ac.cn
关键词	Nitrogen-doped Tio2 Visible-light Titanium-dioxide Photoactivity Photoreactivity Nanoparticles Origin Oxides Water Gap
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30515
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. Liu,P. Niu,L. Z. Wang,et al. Achieving maximum photo-oxidation reactivity of Cs(0.68)Ti(1.83)O(4-x)N(x) photocatalysts through valence band fine-tuning[J]. Catalysis Science & Technology,2011,1(2):222-225.
APA	G. Liu,P. Niu,L. Z. Wang,G. Q. Lu,&H. M. Cheng.(2011).Achieving maximum photo-oxidation reactivity of Cs(0.68)Ti(1.83)O(4-x)N(x) photocatalysts through valence band fine-tuning.Catalysis Science & Technology,1(2),222-225.
MLA	G. Liu,et al."Achieving maximum photo-oxidation reactivity of Cs(0.68)Ti(1.83)O(4-x)N(x) photocatalysts through valence band fine-tuning".Catalysis Science & Technology 1.2(2011):222-225.