Well-dispersed Pt nanoparticles with tunable sizes on dendritic porous silica nanospheres as an artificial enzyme
文献类型：期刊论文
| 作者 | Wang, Xuan1; Yu, Mengdie1; Li, Xiaoyu2; Luan, Yi1; Du, Xin1 |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2021-06-05 |
| 卷号 | 865页码:10 |
| 关键词 | Dendritic porous silica nanospheres Pt nanoparticles Artificial enzyme TMB Catalytic oxidation |
| ISSN号 | 0925-8388 |
| DOI | 10.1016/j.jallcom.2021.158862 |
| 英文摘要 | Due 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. |
| 资助项目 | Beijing 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研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000626334500062 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | Beijing Natural Science Foundation ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/48074]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Li, Xiaoyu; Luan, Yi; Du, Xin |
| 作者单位 | 1.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：过程工程研究所
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