title: Graphene-like carbon nanosheets as a new electrode material for electrochemical determination of hydroquinone and catechol.
abstract: We report here graphene-like carbon nanosheets (GCN) as a new electrode material for the electrochemical determination of hydroquinone (HQ) and catechol (CC). The GCN were prepared from maltose using ammonia chloride as a blowing agent and cobalt nitrate as a graphitization catalyst precursor. The as-prepared GCN material shows high graphitization degree, abundant porosity, and large specific surface area. Two well-separated anodic peaks for HQ and CC are obtained at GCN modified glassy carbon electrode (GCE) with a peak-to-peak separation of 118mV. The redox peak currents of HQ and CC at GCN/GCE were much higher than those at bare GCE and reduced graphene oxide modified GCE. For differential pulse voltammetric detection of HQ and CC, the GCN/GCE shows linear response ranges of 1×10-7̶ 3×10-5M for HQ and 5×10-7̶ 5×10-5M for CC, with detection limits of 2×10-8M for HQ, and 5×10-8M for CC. Satisfactory recoveries were achieved for the determination of HQ and CC in real water samples.
authors.affiliation: Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China.
authors.forename: Hongmei
authors.initials: H
authors.lastname: Jiang
authors.affiliation: Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China.
authors.forename: Shuqin
authors.initials: S
authors.lastname: Wang
authors.affiliation: Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China. Electronic address: 21990748@qq.com.
authors.forename: Wenfang
authors.initials: W
authors.lastname: Deng
authors.affiliation: Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China; State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China.
authors.forename: Youming
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China. Electronic address: tanyueming0813@126.com.
authors.forename: Yueming
authors.initials: Y
authors.lastname: Tan
authors.affiliation: Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China.
authors.forename: Qingji
authors.initials: Q
authors.lastname: Xie
authors.affiliation: Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Ma
mesh_terms: D002396:Catechols / Q000032:analysis* / Q000737:chemistry*; D004563:Electrochemistry / Q000295:instrumentation*; D004566:Electrodes; D006108:Graphite / Q000737:chemistry*; D006873:Hydroquinones / Q000032:analysis* / Q000737:chemistry*; D057230:Limit of Detection; D014867:Water / Q000737:chemistry
chemical_list: D002396:Catechols; D006873:Hydroquinones; D014867:Water; D006108:Graphite; C034221:catechol; C031927:hydroquinone
keywords: Catechol; Differential pulse voltammetry; Electrochemical determination; Graphene-like carbon nanosheets; Hydroquinone