Title: Study on electro catalytic properties of a graphene /poly-o-phenylenediamine film modified carbon paste electrode
Abstract: A new type of graphene /Poly-o-Phenylenediamine modified carbon paste electrode( GR /PPD /CPE) was prepared. In sodium FILM dihydrogen phosphate-sodium hydrogen phosphate buffer solution( pH 7. 3),the electrochemical behavior of hydroquinone( HQ) and catechol( CC) on the modified electrode has been studied by using cycle voltammetry,the linear relationship of scann rate with the peak current or peak potential was investigated by linear scanning voltammetry. The contents of hydroquinone and catechol were measured using differential pulse stripping voltammetry,and the range were 6. 5 × 10-7~ 5. 0 × 10-4mol / L and 1. 0 × 10-7~ 5. 0 × 10-4mol / L,with detection limits( S / N = 3) of 8. 0 × 10-8mol / L and 2. 0 × 10-7mol / L,respectively. The method can be applied to the determination of hydroquinone and catechol in water samples,and the recoveries were in the range of 96. 5% ~ 102. 5%.
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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