Poly(diallydimethylammonium chloride) Functionalized Graphene/Double‐walled Carbon Nanotube Composite for Amperometric Determination of Nitrite |
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| Authors: | Weilu Liu Yue Gu Guoxiang Sun Kexin Na Cong Li Liu Tang Zhiquan Zhang Ming Yang |
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| Institution: | 1. School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, PR China;2. College of Chemistry, Jilin University, Changchun 130012, PR China;3. Department of Breast Surgery, First Hospital, Jilin University, Changchun, 130021, PR China |
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| Abstract: | Poly(diallydimethylammonium chloride) functionalized graphene/double‐walled carbon nanotube composite (PDDA‐GN/DWCNT) was synthesized by a facile microwave‐assisted reduction reaction. PDDA‐GN/DWCNT exhibits enhanced electrocatalytic activity towards nitrite oxidation. The direct electrooxidation behaviors of nitrite on PDDA‐GN/DWCNT were investigated by cyclic voltammetry, amperometric i‐t curve, and rotating disk electrode experiments. Under the optimum conditions, PDDA‐GN/DWCNT was applied to the quantitative analysis of nitrite with a wide linear range covering 0.07–3000 µM and a low detection limit of 0.03 µM (S/N=3). Moreover, PDDA‐GN/DWCNT exhibits satisfied results in the determination of nitrite that released from breast cancer cells. |
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| Keywords: | Graphene double‐walled carbon nanotube poly(diallydimethylammonium chloride) electroanalysis nitrite |
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