DICP OpenIR
Black phosphorus-CdS-La2Ti2O7 ternary composite: Effective noble metal-free photocatalyst for full solar spectrum activated H-2 production
Mao, Liang1,2; Cai, Xiaoyan1,2; Yang, Songqiu3; Han, Keli3; Zhang, Junying2
Corresponding AuthorZhang, Junying(zjy@buaa.edu.cn)
KeywordBlack phosphorus Noble metal-free Near-Infrared light Photocatalytic hydrogen production Charge transfer dynamics
Source PublicationAPPLIED CATALYSIS B-ENVIRONMENTAL
2019-03-01
ISSN0926-3373
DOI10.1016/j.apcatb.2018.10.007
Volume242Pages:441-448
Funding ProjectNational Natural Science Foundation of China[51472013] ; National Natural Science Foundation of China[51672106] ; National Natural Science Foundation of China[21533010] ; National Key Research and Development Program of China[2017YFA0204800]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China
WOS SubjectChemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
WOS Research AreaChemistry ; Engineering
WOS KeywordHYDROGEN-PRODUCTION ; ELECTRON-TRANSFER ; PHOSPHORUS ; GENERATION ; PHOTOANODE ; SEPARATION ; NANOWIRES ; GAP
AbstractWide-bandgap semiconductor photocatalysts such as La2Ti2O7 (LTO) are stable but can only work under ultraviolet (UV) light, while narrow-bandgap semiconductor photocatalysts such as CdS and black phosphorus (BP) with broad-wavelength range absorption generally have low stability and high electron-hole pairs recombination rate. In this work, ternary heterostructure composing of BP quantum dots (QDs), CdS nanoparticles (NPs) and LTO nanosteps (NSP) is developed for the first time to make full use of their respective advantages, which offers a promising approach to achieving desired stability and solar energy harvesting. As an effective noble metal-free photocatalyst, BP-CdS-LTO composite generates H-2 from Na2S/Na2SO3 aqueous solution with a rate of 0.96 mmol g(-1) h(-1) under solar light irradiation, and 0.26 mmol g(-1) h(-1) in the near-infrared (NIR) range. In this system, BP serves as a NIR photosensitizer; CdS not only contributes to visible light absorption but also bonds with BP to promote the transmission of photogenerated charge carriers; LTO absorbs UV light as well as provides reaction sites for photoinduced electrons. Femtosecond transient absorption spectroscopy is used to elucidate the kinetics of the injection of photogenerated electrons from BP QDs to CdS NPs and finally to LTO. This work provides deep insight into charge transfer between semiconductors with different band alignments, which can open a new avenue for more rationally designing heterostuctured photocatalysts for H-2 production.
Language英语
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China
WOS IDWOS:000450135000046
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/166531
Collection中国科学院大连化学物理研究所
Corresponding AuthorZhang, Junying
Affiliation1.China Univ Min & Technol, Sch Mat Sci & Engn, Xuzhou 221116, Jiangsu, Peoples R China
2.Beihang Univ, Dept Phys, Minist Educ, Key Lab Micronano Measurement Manipulat & Phys, Beijing 100191, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Mao, Liang,Cai, Xiaoyan,Yang, Songqiu,et al. Black phosphorus-CdS-La2Ti2O7 ternary composite: Effective noble metal-free photocatalyst for full solar spectrum activated H-2 production[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2019,242:441-448.
APA Mao, Liang,Cai, Xiaoyan,Yang, Songqiu,Han, Keli,&Zhang, Junying.(2019).Black phosphorus-CdS-La2Ti2O7 ternary composite: Effective noble metal-free photocatalyst for full solar spectrum activated H-2 production.APPLIED CATALYSIS B-ENVIRONMENTAL,242,441-448.
MLA Mao, Liang,et al."Black phosphorus-CdS-La2Ti2O7 ternary composite: Effective noble metal-free photocatalyst for full solar spectrum activated H-2 production".APPLIED CATALYSIS B-ENVIRONMENTAL 242(2019):441-448.
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