An enhanced electrochemical sensing platform integrated with graphene oxide and iron hydroxide colloid for sensitive determination of phloroglucinol

Journal of the Brazilian Chemical Society

Liu, Mengqin¹  Deng, Peihong¹  Li, Junhua¹  Zhang, Fuxing¹  Feng, Yonglan¹  Hengyang Normal University, Hunan, P. R. China¹  Kuang, Daizhi¹ 

关键词: graphene oxide;    iron hydroxide colloid;    electrochemical sensor;    sensitive detection;    phloroglucinol;   

DOI  :  10.5935/0103-5053.20130077

学科分类：化学（综合）

来源: SciELO

【 摘 要 】

A novel electrochemical sensing platform was fabricated with nanohybrid consisting of graphene oxide and iron hydroxide colloid. With high surface area and excellent electrical conductivity of the nanohybrid, the prepared electrochemical sensor exhibited preeminent electrocatalytic activity towards the oxidation of phloroglucinol, resulting in the increase of the oxidation peak current and decrease of the oxidation overpotential. The nanohybrid was used as an enhanced electrochemical sensing platform for sensitive determination of phloroglucinol. The oxidation mechanism of phloroglucinol at this sensing platform was investigated in detail, the determination conditions were optimized, and the kinetic parameters were also calculated. Under the optimized conditions, the oxidation peak current was proportional to phloroglucinol concentration in the range from 5.00 to 100.00 nmol L-1 with limits of detection and of quantification of 3.45 and 11.51 nmol L-1, respectively. This sensing platform displayed long-term stability, high reproducibility and super anti-interference capability. It was employed to detect phloroglucinol in environmental water samples with good recoveries. The excellent performance, operational simplicity and low expense make the graphene-based hybrid attractive in the sensor construction.

【 授权许可】

Unknown