Journal article
Recognition of dimethoate carried by bi-layer electrodeposition of silver nanoparticles and imprinted poly- o-phenylenediamine
Electrochimica acta, Vol.53(22), pp.6589-6595
2008
Handle:
https://hdl.handle.net/2376/116171
Abstract
Thin film of a molecular imprinted polymer based on electropolymerization method with sensitive and selective binding sites for dimethoate was developed. This film was cast on gold electrode by electrochemical polymerization in solution of
o-phenylenediamine and template dimethoate via cyclic voltammetry scans and further deposition of Ag nanoparticles. The surface plasmon resonance and cyclic voltammetric signals were also recorded simultaneously during the electropolymerization, controlling the thickness of the polymer film to be 25
nm. The imprinted film showed high selectivity towards to dimethoate. The recognition between the imprinted sensor and target molecule was observed by measuring the variation amperometric response of the oxidation–reduction probe, K
3Fe(CN)
6, on electrode. Under the optimal experimental conditions, the peak currents were proportional to the concentrations of dimethoate in two ranges, from 1.0 to 1000
ng
mL
−1 and from 1.0 to 50
μg
mL
−1, with the detection limit of 0.5
ng
mL
−1. Due to the high affinity, selectivity and stability the imprinted sensor provides a simple detection platform for organophosphate compounds.
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Details
- Title
- Recognition of dimethoate carried by bi-layer electrodeposition of silver nanoparticles and imprinted poly- o-phenylenediamine
- Creators
- Dan Du - Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, PR ChinaShizhen Chen - Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, PR ChinaJie Cai - The Technology Center of Wuhan Iron and Steel Company, Wuhan 430080, PR ChinaYuan Tao - Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, PR ChinaHaiyang Tu - Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, PR ChinaAidong Zhang - Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, PR China
- Publication Details
- Electrochimica acta, Vol.53(22), pp.6589-6595
- Academic Unit
- School of Mechanical and Materials Engineering
- Publisher
- Elsevier Ltd
- Identifiers
- 99900548324001842
- Language
- English
- Resource Type
- Journal article