| 陈碧娇，胡亚晨，孙 碧，李晓燕，谢 慧，罗贵铃，牛燕燕，孙 伟*.基于纳米金/氮掺杂石墨烯的电化学适配体传感器检测汞离子的研究[J].海南师范大学学报自科版,2019,32(1):1-5 |
| 基于纳米金/氮掺杂石墨烯的电化学适配体传感器检测汞离子的研究 |
| An Electrochemical Aptamer Sensor for Hg2+ Detection Based on AuNPs Nanoparticle and N-doped Graphene |
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| DOI：10.12051/j.issn.1674-4942.2019.01.001 |
| 中文关键词: 电化学适配体传感器 汞离子 氮掺杂石墨烯 纳米金 |
| 英文关键词: electrochemical aptamer sensor mercury ions N-doped graphene gold nanoparticles |
| 基金项目:国家自然科学基金（21665007）；海口市重点科技项目（2017042）；海南省自然科学基金创新研究团队项目
（2017CXTD007）；海南省大学生创新创业训练计划项目（cxcyxj2017079） |
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| 中文摘要: |
| 以离子液体修饰碳糊电极（CILE）为工作电极，利用直接滴涂法将氮掺杂石墨烯（NG）固定于CILE表面后，利用恒电位法将纳米金（AuNPs）沉积在电极表面，再通过自组装法将适配体（aptamer）固定在 AuNPs/NG/CILE 表面制得一种新型电化学适配体传感器（aptamer/AuNPs/NG/CILE）。利用示差脉冲伏安法（DPV）对修饰电极进行表征，建立了汞离子（Hg2+）的电化学适配体检测方法，线性范围为1.0×10-9～3.0×10-7 mol/L，检测限为3.33×10-10 mol/L。 |
| 英文摘要: |
| Carbon ionic liquid electrode (CILE) was prepared and used as the working electrode. The N-doped graphene
(NG) was fastened to the CILE surface by direct titration-smear method and the electrodeposited gold nanoparticles
(AuNPs) was deposited on the CILE surface by potentiostatic method. Then the aptamer was immobilized on the AuNPs/NG/
CILE surface by self-assembly method to get a new aptamer/AuNPs/NG/CILE. The modified electrode was characterized by
differential pulse voltammetry (DPV) to build a electrochemical method for Hg2+ detection, resulting in the linear range from
1.0×10-9 to 3.0×10-7 mol/L and the detection limit of 3.33×10-10 mol/L. |
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