无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2020, Vol. 52 ›› Issue (11): 29-32.doi: 10.11962/1006-4990.2020-0024

• 研究与开发 • 上一篇    下一篇

水热法制备石墨烯及对抗坏血酸电催化性能的研究

黄振旭1(),何欢欢2,贾潘潘1,陈体伟2,卫世乾3   

  1. 1.郑州师范学院化学化工学院,河南郑州 450044
    2.许昌学院化学化工学院
    3.许昌学院学报编辑部
  • 收稿日期:2020-05-14 出版日期:2020-11-10 发布日期:2020-12-01
  • 作者简介:黄振旭(1969— ),男,硕士,副教授,主要从事多相催化及电分析方面的研究;E-mail: ctwandy@163.com
  • 基金资助:
    河南省科技攻关项目(172102210467);河南省高等学校重点科研项目(19B150021);郑州地方高校市级大学生创新训练计划项目(ZDC2019002);郑州师范学院教学改革研究项目(2018-ZSJGYB-038)

Synthesis of graphene by hydrothermal method and its electrocatalytic property on ascorbic acid

Huang Zhenxu1(),He Huanhuan2,Jia Panpan1,Chen Tiwei2,Wei Shiqian3   

  1. 1. College of Chemistry and Chemical Engineering,Zhengzhou Normal University,Zhengzhou 450044,China
    2. College of Chemistry and Chemical Engineering,Xuchang University
    3. Editorial Department of Journal,Xuchang University
  • Received:2020-05-14 Online:2020-11-10 Published:2020-12-01

摘要:

以氧化石墨烯为前驱液,采用水热技术在碱性环境下合成出水溶性较好的石墨烯。采用扫描电子显微镜技术(SEM)和X射线粉末衍射(XRD)对石墨烯的结构形貌做了表征。采用循环伏安法等电化学测试技术考察了石墨烯电极对抗坏血酸的电催化性能。实验结果表明,抗坏血酸在该石墨烯电极上的电化学活性显著提高。在pH=6.99条件下,峰电流响应最大。在优化条件下,抗坏血酸的响应电流和其响应浓度(1×10-4~1×10-3 mol/L)呈较好的线性关系,线性回归方程为I(A)=14 927.87c(mmol/L)+41.19,线性相关系数R2=0.998 9。该检测方法用于维生素C药片的实际测定,与标准测定方法相比,具有较高的准确度。

关键词: 石墨烯, 水热法, 抗坏血酸, 电催化

Abstract:

Hydrothermal method was used to prepare graphene with good water-solubility selecting graphene oxide as precur-sor in alkaline environment.Scanning electron microscopy(SEM) and powder X-ray diffraction(XRD) were used to character-ize the structure and morphology of as-prepared graphene.The electrocatalytic property of graphene electrode on ascorbic acid was investigated using various elecrochemical testing techniques.The results showed that the electrocatalytic oxidation activity of ascorbic acid on this graphene electrode was significantly enhanced.The response peak current of ascorbic acid was optimum under the condition of pH =6.99.Under the optimized experimental conditions,the response current of ascorbic acid was linear well with its corresponding concentration in the range of 1×10-4~1×10-3 mol/L.The linear regression equation was I(A)=14 927.87c(mmol/L)+41.19 and the linear correlation coefficient R2=0.998 9.Compared with the standard method,this method applied to the determination of vitamin C tablets has higher accuracy.

Key words: graphene, hydrothermal method, ascorbic acid, electrocatalysis

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