ICCAS OpenIR
Sonochemical Hydrogen Production Efficiently Catalyzed by Au/TiO2
Wang, Yifeng1; Zhao, Dan1; Ji, Hongwei1; Liu, Guilin1; Chen, Chuncheng1; Ma, Wanhong1; Zhu, Huaiyong2; Zhao, Jincai1
2010-10-21
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
ISSN1932-7447
Volume114Issue:41Pages:17728-17733
AbstractAu/TiO2 was used as a highly ellicient sonocatalyst to produce H-2 from water or aqueous solutions. Au/TiO2 significantly increased the yields of H' and 'OH radicals in the sonolysis of water. Product analysis and isotope evidence indicated that hydrogen molecules derived from methanol/water solutions were formed by three pathways: (I) recombination of two H* atoms from the cleavage of water molecules, (2) H-abstraction from methanol by H' generated by water cleavage. and (3) thermal reforming of methanol. The relative importance leach pathway was assessed by carefully analyzing the hydrogen-isotope composition of the evolved hydrogen gas using a modified gas chromatograph. The source of hydrogen in the H-2 evolved from meethanol/water solutions during sonolysis was also addressed. Data showed that, although the addition of methanol in the presence of Au/TiO2 resulted in a 12-fold increase in the rate of H-2 evolution, nearly half of the hydrogen atoms were nevertheless derived from water molecules. Control studies of H-2 formation in the presence of bare TiO2 and in the absence of a catalyst were also performed. In both cases. the compositions of evolved hydrogen gas were similar to that of the Au/TiO2 system, although hydrogen evolution was much slower. These findings reveal that Au nanoparticles on the TiO2 surface effectively catalyze water cleavage and methanol reforming.
DOI10.1021/jp105691v
Indexed BySCI
Language英语
WOS IDWOS:000282855400063
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:29[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/70482
Collection中国科学院化学研究所
Corresponding AuthorZhao, Jincai
Affiliation1.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Key Lab Photochem, Beijing 100080, Peoples R China
2.Queensland Univ Technol, Sch Phys & Chem Sci, Inorgan Mat Res Program, Brisbane, Qld 4001, Australia
Recommended Citation
GB/T 7714
Wang, Yifeng,Zhao, Dan,Ji, Hongwei,et al. Sonochemical Hydrogen Production Efficiently Catalyzed by Au/TiO2[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2010,114(41):17728-17733.
APA Wang, Yifeng.,Zhao, Dan.,Ji, Hongwei.,Liu, Guilin.,Chen, Chuncheng.,...&Zhao, Jincai.(2010).Sonochemical Hydrogen Production Efficiently Catalyzed by Au/TiO2.JOURNAL OF PHYSICAL CHEMISTRY C,114(41),17728-17733.
MLA Wang, Yifeng,et al."Sonochemical Hydrogen Production Efficiently Catalyzed by Au/TiO2".JOURNAL OF PHYSICAL CHEMISTRY C 114.41(2010):17728-17733.
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