Skin B/N-doped anatase TiO2 {001} nanoflakes for visible-light photocatalytic water oxidation

doi:10.1016/j.jcis.2023.06.046

IMR OpenIR

	Skin B/N-doped anatase TiO2 {001} nanoflakes for visible-light photocatalytic water oxidation
	Deng, Guoqiang 1,2; Kang, Xiangdong 1; Yang, Yongqiang 1,2; Wang, Lianzhou 3; Liu, Gang 1,2
通讯作者	Yang, Yongqiang(yqyang@imr.ac.cn) ; Liu, Gang(gangliu@imr.ac.cn)
	2023-11-01
发表期刊	JOURNAL OF COLLOID AND INTERFACE SCIENCE
ISSN	0021-9797
卷号	649 页码:140-147
摘要	The limited visible-light-responsive photoactivities of most doped wide-bandgap photocatalysts with widened absorption range have long been the obstacles for the efficient conversion of solar energy to chemical energy by photocatalysis. The weak transport ability of visible-light-induced low-energy charge carriers, and numerous recombination centers arising from the energy-band modifiers along the transport path are two major factors responsible for such a mismatch. A potential solution is to shorten the transport path of photo-induced charges in well-modulated light absorbers with low-dimensional structure and the spatially concentrated dopants underneath their surfaces. As a proof of concept, skin B/N-doped red anatase TiO2 {001} nanoflakes with the absorption edge up to 675 nm were synthesized in this study. Experimental results revealed that boron dopants in the TiO2 nanoflakes from the hydrolysis of nanosized TiB2 played a crucial role in controlling nitrogen doping in the surface layer of the nanoflakes. As visible light excitation occurs at the surface layer, the photons can be sufficiently absorbed by the formed energy levels at the surface layers, and the photogenerated charge carriers can effectively migrate to the surface, thus leading to efficient visible-light-responsive photocatalytic oxygen evolution activity from water oxidation.
关键词	Visible light absorption Nanoflakes Transport distance Photocatalytic water oxidation Red TiO2
资助者	National Key R & D Program of China ; National Natural Science Foundation of China ; Youth Innovation~Promotion Association of the Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences
DOI	10.1016/j.jcis.2023.06.046
收录类别	SCI
语种	英语
资助项目	National Key R & D Program of China[2021YFA1500800] ; National Natural Science Foundation of China[52072379] ; National Natural Science Foundation of China[51825204] ; National Natural Science Foundation of China[52120105003] ; Youth Innovation~Promotion Association of the Chinese Academy of Sciences[2022190] ; International Partnership Program of Chinese Academy of Sciences[174321KYSB20200005]
WOS研究方向	Chemistry
WOS类目	Chemistry, Physical
WOS记录号	WOS:001032908100001
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/178610
专题	中国科学院金属研究所
通讯作者	Yang, Yongqiang; Liu, Gang
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China 3.Univ Queensland, Nanomat Ctr, Sch Chem Engn & AIBN, Brisbane, Qld 4072, Australia
推荐引用方式 GB/T 7714	Deng, Guoqiang,Kang, Xiangdong,Yang, Yongqiang,et al. Skin B/N-doped anatase TiO2 {001} nanoflakes for visible-light photocatalytic water oxidation[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2023,649:140-147.
APA	Deng, Guoqiang,Kang, Xiangdong,Yang, Yongqiang,Wang, Lianzhou,&Liu, Gang.(2023).Skin B/N-doped anatase TiO2 {001} nanoflakes for visible-light photocatalytic water oxidation.JOURNAL OF COLLOID AND INTERFACE SCIENCE,649,140-147.
MLA	Deng, Guoqiang,et al."Skin B/N-doped anatase TiO2 {001} nanoflakes for visible-light photocatalytic water oxidation".JOURNAL OF COLLOID AND INTERFACE SCIENCE 649(2023):140-147.