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Well-dispersed Pt nanoparticles with tunable sizes on dendritic porous silica nanospheres as an artificial enzyme
Wang, Xuan1; Yu, Mengdie1; Li, Xiaoyu2; Luan, Yi1; Du, Xin1
2021-06-05
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume865Pages:10
AbstractDue to excellent performances such as superior catalytic activity, high stability and convenient synthesis, the artificial enzymes with high efficiency gain significant attention in both academic and industrial research. However, many artificial enzymes face some challenges including low sensitivity, poor selectivity and relatively poor stability. In this work, we successfully employed aminopropyl-modified dendritic porous silica nanospheres (DPSNs-NH2) as a carrier to fabricate a series of robust and effective nanocatalysts (DPSNs-NH2@Pt) with many small Pt nanoparticles (NPs) uniformly loaded on the surface of center-radial large pores. Among DPSNs-NH2@Pt nanocatalysts with tunable sizes of Pt NPs, DPSNs-NH2@Pt with Pt NPs size of ca. 2.5 nm exhibited excellent peroxidase-like catalytic activity and selectivity as an artificial enzyme in model reaction of 3,5,3',5'-tetramethylbenzidine (TMB) oxidation, with reaction rate of 8.3 x 10(-5) mol L-1 s(-1) g(-1) under the optimal catalytic conditions (T = 55 degrees C, pH = 1.5). Moreover, it also showed stable catalytic activity even after ultrasonic treatment at 600 W for 50 min, which should be ascribed to structural stability of DPSNs-NH2@Pt. The obtained results should provide some insights for the design and fabrication of the supported catalysts as artificial enzymes. (C) 2021 Elsevier B.V. All rights reserved.
KeywordDendritic porous silica nanospheres Pt nanoparticles Artificial enzyme TMB Catalytic oxidation
DOI10.1016/j.jallcom.2021.158862
Language英语
Funding ProjectBeijing Natural Science Foundation[L182020] ; Fundamental Research Funds for the Central Universities[FRF-TP-19-013B1] ; National Natural Science Foundation of China[21501009] ; National Natural Science Foundation of China[51971208] ; National Natural Science Foundation of China[51671181] ; Youth Innovation Promotion Association CAS
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationBeijing Natural Science Foundation ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS
WOS IDWOS:000626334500062
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/48075
Collection中国科学院过程工程研究所
Corresponding AuthorLi, Xiaoyu; Luan, Yi; Du, Xin
Affiliation1.Univ Sci & Technol Beijing, Sch Mat Sci & Engn, 30 Xueyuan Rd, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wang, Xuan,Yu, Mengdie,Li, Xiaoyu,et al. Well-dispersed Pt nanoparticles with tunable sizes on dendritic porous silica nanospheres as an artificial enzyme[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,865:10.
APA Wang, Xuan,Yu, Mengdie,Li, Xiaoyu,Luan, Yi,&Du, Xin.(2021).Well-dispersed Pt nanoparticles with tunable sizes on dendritic porous silica nanospheres as an artificial enzyme.JOURNAL OF ALLOYS AND COMPOUNDS,865,10.
MLA Wang, Xuan,et al."Well-dispersed Pt nanoparticles with tunable sizes on dendritic porous silica nanospheres as an artificial enzyme".JOURNAL OF ALLOYS AND COMPOUNDS 865(2021):10.
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