Constructing Anatase-Brookite TiO2 Phase Junction by Thermal Topotactic Transition to Promote Charge Separation for Superior Photocatalytic H-2 Generation

doi:10.1021/acs.jpclett.2c00964

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	Constructing Anatase-Brookite TiO2 Phase Junction by Thermal Topotactic Transition to Promote Charge Separation for Superior Photocatalytic H-2 Generation
	Du, Peipei 4; Niu, Ping 3; Yang, Yongqiang 4; Chen, Ruotian 2; Yin, Li-Chang 4; Fan, Fengtao 2; Liu, Gang 1,4
刊名	JOURNAL OF PHYSICAL CHEMISTRY LETTERS
	2022-05-19
卷号	13 期号:19 页码:4244-4250
ISSN号	1948-7185
DOI	10.1021/acs.jpclett.2c00964
通讯作者	Liu, Gang(gangliu@imr.ac.cn)
英文摘要	Phase junctions of photocatalysts can promote the separation of photogenerated charge carriers for efficient utilization of the carriers. Construction of phase junctions and establishing their structure-performance relationship are still required. Herein, polycrystalline TiO2 decahedral plates with different phases were synthesized by thermal treatment-induced topotactic transition of titanium oxalate crystals. The phase of TiO2 evolved from pure anatase to anatase-brookite, anatase-brookite-rutile, and then to anatase-rutile, while the morphology of the decahedral plates was well maintained. The biphase anatase-brookite was found to be most efficient in photocatalytic hydrogen generation. Specifically, the hydrogen generation rate of the biphase anatase-brookite TiO2 was nearly 2.4 times greater than that of the biphase anatase-rutile TiO2. The spatially resolved surface photovoltage measurements indicate the more efficient separation of photogenerated charge carriers and thus greater photocatalytic activity of the former. This work provides a strategy for developing efficient phase-junction photocatalysts.
资助项目	National Key Research and Development Program of China[2021YFA1500800] ; National Natural Science Foundation of China[51825204] ; Key Research Program of Frontier Sciences CAS[QYZDBSSW-JSC039] ; CAS Projects for Young Scientists in Basic Research[YSBR-004] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2022190]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000841879000005
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences CAS ; CAS Projects for Young Scientists in Basic Research ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/174488]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liu, Gang
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China 3.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Du, Peipei,Niu, Ping,Yang, Yongqiang,et al. Constructing Anatase-Brookite TiO2 Phase Junction by Thermal Topotactic Transition to Promote Charge Separation for Superior Photocatalytic H-2 Generation[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2022,13(19):4244-4250.
APA	Du, Peipei.,Niu, Ping.,Yang, Yongqiang.,Chen, Ruotian.,Yin, Li-Chang.,...&Liu, Gang.(2022).Constructing Anatase-Brookite TiO2 Phase Junction by Thermal Topotactic Transition to Promote Charge Separation for Superior Photocatalytic H-2 Generation.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,13(19),4244-4250.
MLA	Du, Peipei,et al."Constructing Anatase-Brookite TiO2 Phase Junction by Thermal Topotactic Transition to Promote Charge Separation for Superior Photocatalytic H-2 Generation".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 13.19(2022):4244-4250.