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In situ exsolution of silver nanoparticles on AgTaO3-SrTiO3 solid solutions as efficient plasmonic photocatalysts for water splitting
Yu, Jinxing; Zhang, Lei; Qian, Jun; Zhu, Zhirong; Ni, Shuang; Liu, Gang; Xu, Xiaoxiang
2019-11-05
Source PublicationAPPLIED CATALYSIS B-ENVIRONMENTAL
ISSN0926-3373
Volume256
AbstractStarting from two wide band gap semiconductors AgTaO3 and SrTiO3, we managed to reduce the band gap by forming their solid solutions, i.e. (AgTaO3)(1-x)(SrTiO3)(x) (0.0 <= x <= 1.0). These solid solutions all adopt cubic perovskite structure similar to SrTiO3 and high temperature phase of AgTaO3, suggesting that SrTiO3 is helpful to stabilize AgTaO3 in its high temperature cubic phase. Substantial improvements over photocatalytic hydrogen production were realized in these solid solutions which clearly outperform their parent compounds AgTaO3 and SrTiO3. In-situ exolution of silver nanoparticles at the surface of solid solutions (x = 0.2) substantially strengthen the visible light absorption due to localized surface plasmons of these silver nanoparticles. This contributes to further improvements on both photocatalytic hydrogen and oxygen production under visible light illumination (lambda >= 400 nm). Apparent quantum efficiency as high as (similar to)2.02% and (similar to)0.11% was achieved at solid solutions (x = 0.2) decorated with silver nanoparticles for full range (lambda >= 250 nm) and visible light (lambda >= 400 nm) illumination respectively. Photoelectrochemical analysis suggests that solid solutions own a better charge separation conditions than their parent compounds. Furthermore, the band edge positions of solid solutions (x = 0.2) lie approximately in the middle between AgTaO3 and SrTiO3, being ideal for solar water splitting reactions.
KeywordIn situ exsolution Plasmonic silver Solid solution Photocatalyst Water splitting
Indexed BySCI
Language英语
WOS IDWOS:000483451200032
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80642
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Yu, Jinxing,Zhang, Lei,Qian, Jun,et al. In situ exsolution of silver nanoparticles on AgTaO3-SrTiO3 solid solutions as efficient plasmonic photocatalysts for water splitting[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2019,256.
APA Yu, Jinxing.,Zhang, Lei.,Qian, Jun.,Zhu, Zhirong.,Ni, Shuang.,...&Xu, Xiaoxiang.(2019).In situ exsolution of silver nanoparticles on AgTaO3-SrTiO3 solid solutions as efficient plasmonic photocatalysts for water splitting.APPLIED CATALYSIS B-ENVIRONMENTAL,256.
MLA Yu, Jinxing,et al."In situ exsolution of silver nanoparticles on AgTaO3-SrTiO3 solid solutions as efficient plasmonic photocatalysts for water splitting".APPLIED CATALYSIS B-ENVIRONMENTAL 256(2019).
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