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Pt Nanoparticles with High Oxidase-Like Activity and Reusability for Detection of Ascorbic Acid
Cheng, Q; Yang, Y; Peng, YS; Liu, M
2020-06-02
Source PublicationNANOMATERIALS
Issue6
SubtypeArticle
AbstractNoble metal nanoenzymes such as Pt, Au, Pd, etc. exhibit magnificent activity. However, due to the scarce reserves and expensive prices of precious metals, it is essential to investigate their enzyme-like activity and explore the possibility of their reuse. In this work, the oxidase-like activity and reusability of several Pt nanoparticles with different morphologies were detected. We compared the Pt nanoparticles (NPs) with a size of about 30 nm self-assembled by 5 nm Pt nanoparticles and Pt nanoparticles (Pt-0 HCl) with a diameter of about 5 nm, and found that their Michaelis-Menten constants (Km) were close and their initial performance similar, but the Pt NPs had better reusability. This was probably attributed to the stacked structure of Pt NPs, which was conducive to the substance transport and sufficient contact. At the same time, it was found that the size, dispersion, and organic substances adsorbed on the surface of Pt nanoparticles would have a significant impact on their reusability. A colorimetric detection method was designed using the oxidase-like activity of Pt NPs to detect ascorbic acid in triplicate. The limits of detection were 131 +/- 15, 144 +/- 14, and 152 +/- 9 nM, with little difference. This research not only showed that the morphology of the catalyst could be changed and its catalytic performance could be controlled by a simple liquid phase synthesis method, but also that it had great significance for the reuse of Pt nanoenzymes in the field of bioanalysis.
DOI10.3390/nano10061015
WOS KeywordPEROXIDASE-LIKE ACTIVITY ; COLORIMETRIC DETECTION ; PLATINUM NANOCUBES ; NANOCOMPOSITES ; MELAMINE ; SULFITE ; GOLD
Language英语
WOS Research AreaScience & Technology - Other Topics ; Materials Science
PublisherMDPI
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27998
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Cheng, Q,Yang, Y,Peng, YS,et al. Pt Nanoparticles with High Oxidase-Like Activity and Reusability for Detection of Ascorbic Acid[J]. NANOMATERIALS,2020(6).
APA Cheng, Q,Yang, Y,Peng, YS,&Liu, M.(2020).Pt Nanoparticles with High Oxidase-Like Activity and Reusability for Detection of Ascorbic Acid.NANOMATERIALS(6).
MLA Cheng, Q,et al."Pt Nanoparticles with High Oxidase-Like Activity and Reusability for Detection of Ascorbic Acid".NANOMATERIALS .6(2020).
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