Immobilization of molybdenum oxide in polyaniline and electrocatalytic properties of the composite modified electrode

Li Jun Bian; Jiang Hua Zhang; Ji Qi; Xiao Xia Liu; Diamond Dermot; King Tong Lau

doi:10.1016/j.snb.2010.03.043

Immobilization of molybdenum oxide in polyaniline and electrocatalytic properties of the composite modified electrode

Li Jun Bian, Jiang Hua Zhang, Ji Qi, Xiao Xia Liu^*, Diamond Dermot, King Tong Lau

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

Polyaniline and molybdenum oxide composite modified electrode (PANI-MoO₃) was prepared through immobilization of the oxide in the polymer matrix. The obtained composite was characterized by XPS and FTIR. Stability and electrocatalytic properties of the composite for the reduction of chlorate were investigated by using cyclic voltammetry and chronoamerometry. It was found that the electrocatalytic activity of MoO₃ towards the reduction of chlorate is improved by immobilization in PANI. The composite modified electrode showed a quick response time of 10 s to chlorate. Results of amperometric measurements at a working potential of 0.0 V vs. SCE showed that the composite modified electrode displayed linear amperometric responds to chlorate in a concentration range of 5 μM-10.0 mM with a lower detection limit (LOD) of 1.3 μM. The stability of MoO₃ was also improved through immobilization in PANI.

Original language	English
Pages (from-to)	73-77
Number of pages	5
Journal	Sensors and Actuators, B: Chemical
Volume	147
Issue number	1
DOIs	https://doi.org/10.1016/j.snb.2010.03.043
Publication status	Published - 18 May 2010
Externally published	Yes

Keywords

Chlorate
Electrocatalytic reduction
Molybdenum oxide
Polyaniline

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10.1016/j.snb.2010.03.043

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title = "Immobilization of molybdenum oxide in polyaniline and electrocatalytic properties of the composite modified electrode",

abstract = "Polyaniline and molybdenum oxide composite modified electrode (PANI-MoO3) was prepared through immobilization of the oxide in the polymer matrix. The obtained composite was characterized by XPS and FTIR. Stability and electrocatalytic properties of the composite for the reduction of chlorate were investigated by using cyclic voltammetry and chronoamerometry. It was found that the electrocatalytic activity of MoO3 towards the reduction of chlorate is improved by immobilization in PANI. The composite modified electrode showed a quick response time of 10 s to chlorate. Results of amperometric measurements at a working potential of 0.0 V vs. SCE showed that the composite modified electrode displayed linear amperometric responds to chlorate in a concentration range of 5 μM-10.0 mM with a lower detection limit (LOD) of 1.3 μM. The stability of MoO3 was also improved through immobilization in PANI.",

keywords = "Chlorate, Electrocatalytic reduction, Molybdenum oxide, Polyaniline",

author = "Bian, {Li Jun} and Zhang, {Jiang Hua} and Ji Qi and Liu, {Xiao Xia} and Diamond Dermot and Lau, {King Tong}",

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doi = "10.1016/j.snb.2010.03.043",

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T1 - Immobilization of molybdenum oxide in polyaniline and electrocatalytic properties of the composite modified electrode

AU - Bian, Li Jun

AU - Zhang, Jiang Hua

AU - Qi, Ji

AU - Liu, Xiao Xia

AU - Dermot, Diamond

AU - Lau, King Tong

PY - 2010/5/18

Y1 - 2010/5/18

N2 - Polyaniline and molybdenum oxide composite modified electrode (PANI-MoO3) was prepared through immobilization of the oxide in the polymer matrix. The obtained composite was characterized by XPS and FTIR. Stability and electrocatalytic properties of the composite for the reduction of chlorate were investigated by using cyclic voltammetry and chronoamerometry. It was found that the electrocatalytic activity of MoO3 towards the reduction of chlorate is improved by immobilization in PANI. The composite modified electrode showed a quick response time of 10 s to chlorate. Results of amperometric measurements at a working potential of 0.0 V vs. SCE showed that the composite modified electrode displayed linear amperometric responds to chlorate in a concentration range of 5 μM-10.0 mM with a lower detection limit (LOD) of 1.3 μM. The stability of MoO3 was also improved through immobilization in PANI.

AB - Polyaniline and molybdenum oxide composite modified electrode (PANI-MoO3) was prepared through immobilization of the oxide in the polymer matrix. The obtained composite was characterized by XPS and FTIR. Stability and electrocatalytic properties of the composite for the reduction of chlorate were investigated by using cyclic voltammetry and chronoamerometry. It was found that the electrocatalytic activity of MoO3 towards the reduction of chlorate is improved by immobilization in PANI. The composite modified electrode showed a quick response time of 10 s to chlorate. Results of amperometric measurements at a working potential of 0.0 V vs. SCE showed that the composite modified electrode displayed linear amperometric responds to chlorate in a concentration range of 5 μM-10.0 mM with a lower detection limit (LOD) of 1.3 μM. The stability of MoO3 was also improved through immobilization in PANI.

KW - Chlorate

KW - Electrocatalytic reduction

KW - Molybdenum oxide

KW - Polyaniline

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SN - 0925-4005

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JO - Sensors and Actuators, B: Chemical

JF - Sensors and Actuators, B: Chemical

IS - 1

ER -

Immobilization of molybdenum oxide in polyaniline and electrocatalytic properties of the composite modified electrode

Abstract

Keywords

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