کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10146982 | 1646421 | 2018 | 24 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On the origin of the synergy between the Pt nanoparticles and MnO2 nanosheets in Wonton-like 3D nanozyme oxidase mimics
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We describe a 3-dimensional scaffold nanocomposite oxidase nanozyme (termed PtNPs@MnO2) formed from 2-dimensional MnO2 nanosheets grown on the surface of large platinum nanoparticles (PtNPs). The two components act synergistically in the catalytic oxidation of 3,3â²,5,5â²-tetramethylbenzidine (TMB), due to the intimate contact between the two components and mutual electron transfer phenomena. The Wonton-like 3-dimensional structure of the nanocomposite is highly stable and was characterized by cryogenic electron microscopy (cryo-EM). The PtNPs@MnO2 nanocomposite was employed in a sensing assay for the determination of glutathione (GSH) and dopamine (DA) with a linear range of 0.2â¯Î¼M-11â¯Î¼M for GSH and 0.1â¯Î¼M-1.1â¯Î¼M for DA. The limit of detection (LOD) and limit of quantification (LOQ) of GSH are 0.05â¯Î¼M (S/Nâ¯=â¯3) and 0.17â¯Î¼M (S/Nâ¯=â¯10), respectively. The LOD and LOQ for DA were estimated as 0.025â¯Î¼M and 0.083â¯Î¼M. The method was applied to analyze GSH in human serum samples and DA in pharmaceuticals.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biosensors and Bioelectronics - Volume 121, 15 December 2018, Pages 159-165
Journal: Biosensors and Bioelectronics - Volume 121, 15 December 2018, Pages 159-165
نویسندگان
Jing Liu, Lingjie Meng, Zhaofu Fei, Paul J. Dyson, Lei Zhang,