C-dots/Mn3O4 nanocomposite as an oxidase nanozyme for colorimetric determination of ferrous ion

被引：14

作者：

Honarasa, Fatemeh ^{[1
]}

Peyravi, Fatemeh ^{[1
]}

Amirian, Hesam ^{[1
]}

机构：

[1] Islamic Azad Univ, Dept Chem, Shiraz Branch, Shiraz, Iran

来源：

JOURNAL OF THE IRANIAN CHEMICAL SOCIETY | 2020年 / 17卷 / 03期

关键词：

Manganese oxide; C-dots; Nanocomposite; Nanozyme; Oxidase; Ferrous ion; MANGANESE OXIDE; QUANTUM DOTS; CARBON DOTS; SENSITIVE DETECTION; FLUORESCENT-PROBE; NANOPARTICLES; EFFICIENT; GRAPHENE; PERFORMANCE; ENZYME;

D O I：

10.1007/s13738-019-01787-z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

At first, C-dots/manganese oxide nanocomposite was synthesized chemically. The presence of Mn3O4 nanostructures and C-dots in the synthesized nanocomposite was confirmed by using of XRD, EDS, FTIR and TEM. The proposed method for synthesis is easy and cheap. The Mn3O4/C-dots nanocomposite shows oxidase-like activity, which is higher than oxidase-like activity of Mn3O4 nanoparticles. In this manner, detection of ferrous ion was possible by using of a competitive reaction between 3,3 ',5,5 '-tetramethylbenzidine and Fe2+ ion in the presence of the synthesized nanocomposite. So, a sensitive and selective colorimetric sensor for determination of Fe2+ ion was introduced. The linear range and detection limit for determination of Fe2+ ion were obtained as 0.03-0.83 mu M and 0.03 mu M, respectively.

引用

页码：507 / 512

页数：6

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