DICP OpenIR
Size dependence of gold clusters with precise numbers of atoms in aerobic oxidation of D-glucose
Zhang, Junying; Li, Zhimin; Huang, Jiahui; Liu, Chao; Hong, Feng; Zheng, Kai; Li, Gao
Source PublicationNANOSCALE
2017-11-21
ISSN2040-3364
DOI10.1039/c7nr06566c
Volume9Issue:43Pages:16879-16886
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS KeywordSELECTIVE OXIDATION ; CHEMOSELECTIVE HYDROGENATION ; CATALYTIC-ACTIVITY ; NANOCLUSTERS ; NANOPARTICLES ; ACID ; XPS
AbstractSize-dependence is an important factor in gold nanocatalysis. In this study, we explored the catalytic performance of atomically precise Au-n(PET)(m) nanocluster catalysts (where, PET = phenylethanethiolate) of different gold atoms and sizes, including Au-25(PET)(18) (similar to 1.2 nm), Au-38(PET)(24) (similar to 1.5 nm), and Au-144(PET)(60) (similar to 1.9 nm) nanoclusters. These Au-n(PET)(m) gold clusters, immobilized on activated carbon (AC) and used as heterogeneous catalysts, were characterized by transmission electron microscope (TEM), BET as well as X-ray photoelectron spectroscopy (XPS). They showed good catalytic activity in the aerobic oxidation of D-glucose into gluconic acid (or gluconates) with similar to 98% selectivity. We observed a distinct size dependence of the gold nanocluster in the oxidation reactions, which follows as Au-144(PET)(60)/AC > Au-38(PET)(24)/AC > Au-25(PET)(18)/AC. It was primarily determined by the surface area of the nanoscopic Au nanocluster. Further, the turnover frequency (TOF) for the Au-144(PET)(60)/AC catalyst was found to be 2.3 s(-1), which is comparable with that for Au/EC300 and much higher than those for the commercial Pd/AC and Pd-Bi/AC catalysts under the identical reaction conditions. On the whole, the core size of the gold nanoclusters played an important role in the catalytic process.
Language英语
WOS IDWOS:000414960900042
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/168351
Collection中国科学院大连化学物理研究所
Corresponding AuthorHuang, Jiahui; Li, Gao
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, Gold Catalysis Res Ctr, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Junying,Li, Zhimin,Huang, Jiahui,et al. Size dependence of gold clusters with precise numbers of atoms in aerobic oxidation of D-glucose[J]. NANOSCALE,2017,9(43):16879-16886.
APA Zhang, Junying.,Li, Zhimin.,Huang, Jiahui.,Liu, Chao.,Hong, Feng.,...&Li, Gao.(2017).Size dependence of gold clusters with precise numbers of atoms in aerobic oxidation of D-glucose.NANOSCALE,9(43),16879-16886.
MLA Zhang, Junying,et al."Size dependence of gold clusters with precise numbers of atoms in aerobic oxidation of D-glucose".NANOSCALE 9.43(2017):16879-16886.
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