CAS OpenIR  > 中科院上海应用物理研究所2011-2018年
Hierarchical FeTiO3-TiO2 hollow spheres for efficient simulated sunlight-driven water oxidation
Han, TR; Chen, YJ; Tian, GH; Wang, JQ; Ren, ZY; Zhou, W; Fu, HG; Tian, GH (reprint author), Heilongjiang Univ, Minist Educ Peoples Republ China, Key Lab Funct Inorgan Mat Chem, Harbin 150080, Peoples R China.
2015
Source PublicationNANOSCALE
ISSN2040-3364
Volume7Issue:38Pages:15924—15934
Subtype期刊文献
AbstractOxygen generation is the key step for the photocatalytic overall water splitting and considered to be kinetically more challenging than hydrogen generation. Here, an effective water oxidation catalyst of hierarchical FeTiO3-TiO2 hollow spheres are prepared via a two-step sequential solvothermal processes and followed by thermal treatment. The existence of an effective heterointerface and built-in electric field in the surface space charge region in FeTiO3-TiO2 hollow spheres plays a positive role in promoting the separation of photoinduced electron-hole pairs. Surface photovoltage, transient-state photovoltage, fluorescence and electrochemical characterization are used to investigate the transfer process of photo-induced charge carriers. The photogenerated charge carriers in the hierarchical FeTiO3-TiO2 hollow spheres with a proper molar ratio display much higher separation efficiency and longer lifetime than those in the FeTiO3 alone. Moreover, it is suggested that the hierarchical porous hollow structure can contribute to the enhancement of light utilization, surface active sites and material transportation through the framework walls. This specific synergy significantly contributes to the remarkable improvement of the photocatalytic water oxidation activity of the hierarchical FeTiO3-TiO2 hollow spheres under simulated sunlight (AM1.5).
KeywordVisible-light Irradiation Photocatalytic Hydrogen Evolution Charge-transfer Properties Exposed 001 Facets Z-scheme Photogenerated Charges Oxygen Tio2 Cobalt Semiconductor
Indexed BySCI
Language英语
WOS IDWOS:000361834100045
Citation statistics
Cited Times:25[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/24941
Collection中科院上海应用物理研究所2011-2018年
Corresponding AuthorTian, GH (reprint author), Heilongjiang Univ, Minist Educ Peoples Republ China, Key Lab Funct Inorgan Mat Chem, Harbin 150080, Peoples R China.
Recommended Citation
GB/T 7714
Han, TR,Chen, YJ,Tian, GH,et al. Hierarchical FeTiO3-TiO2 hollow spheres for efficient simulated sunlight-driven water oxidation[J]. NANOSCALE,2015,7(38):15924—15934.
APA Han, TR.,Chen, YJ.,Tian, GH.,Wang, JQ.,Ren, ZY.,...&Tian, GH .(2015).Hierarchical FeTiO3-TiO2 hollow spheres for efficient simulated sunlight-driven water oxidation.NANOSCALE,7(38),15924—15934.
MLA Han, TR,et al."Hierarchical FeTiO3-TiO2 hollow spheres for efficient simulated sunlight-driven water oxidation".NANOSCALE 7.38(2015):15924—15934.
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