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Post-illumination activity of SnO2 nanoparticle-decorated Cu2O nanocubes by H2O2 production in dark from photocatalytic "memory"
Liu, Lingmei; Sun, Wuzhu; Yang, Weiyi; Li, Qi; Shang, Jian Ku; qili@imr.ac.cn
2016
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume6Pages:-
AbstractMost photocatalysts only function under illumination, while many potential applications require continuous activities in dark. Thus, novel photocatalysts should be developed, which could store part of their photoactivity in "memory" under illumination and then be active from this "memory" after the illumination is turned off for an extended period of time. Here a novel composite photocatalyst of SnO2 nanoparticle-decorated Cu2O nanocubes is developed. Their large conduction band potential difference and the inner electrostatic field formed in the p-n heterojunction provide a strong driving force for photogenerated electrons to move from Cu2O to SnO2 under visible light illumination, which could then be released to react with O-2 in dark to produce H2O2 for its post-illumination activity. This work demonstrates that the selection of decoration components for photocatalysts with the post-illumination photocatalytic "memory" could be largely expanded to semiconductors with conduction band potentials less positive than the two-electron reduction potential of O-2.
description.department[liu, lingmei ; sun, wuzhu ; yang, weiyi ; li, qi] chinese acad sci, environm funct mat div, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china ; [shang, jian ku] univ illinois, dept mat sci & engn, urbana, il 61801 usa ; [li, qi] 72 wenhua rd, shenyang 110016, liaoning provin, peoples r china
Funding OrganizationNational Natural Science Foundation of China [51102246]; Youth Innovation Promotion Association, Chinese Academy of Sciences [Y2N5711171]; Basic Science Innovation Program of Shenyang National Laboratory for Materials Science [Y4N56R1161]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75063
Collection中国科学院金属研究所
Corresponding Authorqili@imr.ac.cn
Recommended Citation
GB/T 7714
Liu, Lingmei,Sun, Wuzhu,Yang, Weiyi,et al. Post-illumination activity of SnO2 nanoparticle-decorated Cu2O nanocubes by H2O2 production in dark from photocatalytic "memory"[J]. SCIENTIFIC REPORTS,2016,6:-.
APA Liu, Lingmei,Sun, Wuzhu,Yang, Weiyi,Li, Qi,Shang, Jian Ku,&qili@imr.ac.cn.(2016).Post-illumination activity of SnO2 nanoparticle-decorated Cu2O nanocubes by H2O2 production in dark from photocatalytic "memory".SCIENTIFIC REPORTS,6,-.
MLA Liu, Lingmei,et al."Post-illumination activity of SnO2 nanoparticle-decorated Cu2O nanocubes by H2O2 production in dark from photocatalytic "memory"".SCIENTIFIC REPORTS 6(2016):-.
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