| 罗贵铃，牛燕燕，孙 碧，谢 慧，李晓燕，李冰航，孙 伟.抗坏血酸在石墨烯修饰金属有机骨架-离子液体-碳糊电极上的电化学行为及其测定[J].海南师范大学学报自科版,2019,32(3):243-248 |
| 抗坏血酸在石墨烯修饰金属有机骨架-离子液体-碳糊电极上的电化学行为及其测定 |
| Electrochemical Behavior of Ascorbic Acid at Graphene andMetal Organic Frameworks-Ionic Liquid-CarbonPaste Electrode and Detection |
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| DOI：10.12051/j.issn.1674-4942.2019.03.002 |
| 中文关键词: 铜基金属有机骨架材料 石墨烯 离子液体碳糊电极 抗坏血酸 传感器 |
| 英文关键词: Copper based metal organic frameworks graphene carbon ionic liquid electrode ascorbic acid sensor |
| 基金项目:海南省自然科学基金创新团队项目（2017CXTD007）；海口市重点科技项目（2017042）；海南省普通高等学校研
究生创新科研项目（Hys2018-212） |
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| 中文摘要: |
| 利用水热法合成铜基金属有机骨架材料（Cu（3 BTC）2
），用扫描电子显微镜、X射线粉末
衍射、红外光谱和热重分析等表征其形貌、结构和热稳定性。按照一定比例将Cu（3 BTC）2、碳糊和
离子液体（IL）［HPPF6］混合研磨制备Cu（3 BTC）2-IL-CPE；利用恒电位法在该电极表面沉积石墨烯
（GR）制备GR/Cu（3 BTC）2-IL-CPE，采用循环伏安法和差分脉冲伏安法测试工作电极的电化学性
能。结果表明GR/Cu（3 BTC）2-IL-CPE对抗坏血酸（AA）的电催化性能明显提升，抗坏血酸浓度在
0.005～7.0 mmol/L范围时氧化峰电流与浓度呈线性关系，检测限为0.0017 mmol/L（3σ）。该修饰电
极成功应用于市售维生素C片剂的测定，证明本方法具有良好的准确性和选择性。 |
| 英文摘要: |
| The copper based metal organic frameworks (Cu3(BTC)2) is prepared by solvothermal method, which were char⁃
acterized using scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy and thermogravi⁃
metric analyzer. Cu3(BTC)2 were mixed with ionic liquid (IL) and graphitic power to get Cu3(BTC)2-IL-CPE. Graphene was
successfully modified to the Cu3(BTC)2-IL-CPE surface by electrodeposition methods, and then the GR/Cu3(BTC)2-ILCPE was prepared. The sensitive oxidation response of ascorbic acid (AA) by cyclic voltammetric (CV) and differential
pulse voltammetry (DPV) was verified. A voltammetric linear response for AA was obtained in the concentration range of
0.005 ~ 7.0 mmol/L with a detection limit of 0.0017 mmol/L (3σ). The proposed method could be successfully utilized for
AA detection in vitamin C tablets. |
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