Ultra-sensitive non-aggregation colorimetric sensor for detection of iron based on the signal amplification effect of Fe3+ catalyzing H2O2 oxidize gold nanorods

被引：42
|
作者：
Liu, Jia-Ming [1 ]
Wang, Xin-Xing [1 ]
Jiao, Li [1 ]
Cui, Ma-Lin [1 ]
Lin, Li-Ping [1 ]
Zhang, Li-Hong [2 ]
Jiang, Shu-Lian [3 ]
机构：
[1] Zhangzhou Normal Coll, Dept Chem & Environm Sci, Zhangzhou 363000, Peoples R China
[2] Zhangzhou Inst Technol, Dept Food & Biol Engn, Zhangzhou 363000, Peoples R China
[3] Fujian Prov Bur Qual & Tech Supervis, Zhangzhou 363000, Peoples R China
来源：
TALANTA | 2013年 / 116卷
关键词：
Gold nanorods; Longitudinal plasmon absorption band; Signal amplification; Catalyzing non-aggregation colorimetric sensor; Iron; PASTE ELECTRODE; CARBON NANOTUBES; ELECTROCHEMICAL SENSOR; ACETAMINOPHEN; NOREPINEPHRINE; NANOPARTICLES; MECHANISM; OXIDATION; SURFACE; ACID;
D O I：
10.1016/j.talanta.2013.05.024
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Fe3+ can catalyze H2O2 to oxidize along on the longitudinal axis of gold nanorods (AuNRs), which caused the aspect ratio of AuNRs to decrease, longitudinal plasmon absorption band (LPAB) of AuNRs to blueshift (AA) and the color of the solution to change obviously. Thus, a rapid response and highly sensitive non-aggregation colorimetric sensor for the determination of Fe3+ has been developed based on the signal amplification effect of catalyzing H2O2 to oxidize AuNRs. This simple and selective sensor with a wide linear range of 0.20-30.00 mu M has been utilized to detect Fe3+ in blood samples, and the results consisted with those obtained by inductively coupled plasma-mass spectroscopy (ICP-MS). Simultaneously, the mechanism of colorimetric sensor for the detection of Fe3+ was also discussed. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：199 / 204
页数：6
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