石墨烯量子点-银纳米颗粒复合物用于过氧化氢和葡萄糖比色检测

夏畅 海欣 陈帅 陈旭伟 王建华

引用本文: 夏畅, 海欣, 陈帅, 陈旭伟, 王建华. 石墨烯量子点-银纳米颗粒复合物用于过氧化氢和葡萄糖比色检测[J]. 分析化学, 2016, 44(1): 41-48. doi: 10.11895/j.issn.0253-3820.150568 shu
Citation:  XIA Chang, HAI Xin, CHEN Shuai, CHEN Xu-Wei, WANG Jian-Hua. Preparation of Graphene Quantum Dots/Ag Nanoparticles Nanocomposites for Colorimetric Detection of H2O2 and Glucose[J]. Chinese Journal of Analytical Chemistry, 2016, 44(1): 41-48. doi: 10.11895/j.issn.0253-3820.150568 shu

石墨烯量子点-银纳米颗粒复合物用于过氧化氢和葡萄糖比色检测

    通讯作者: 陈旭伟, 王建华; 陈旭伟, 王建华
  • 基金项目:

    本文系国家自然科学基金项目(Nos.21275027,21235001,21475017)资助 (Nos.21275027,21235001,21475017)

摘要: 以石墨烯量子点(GQDs)为还原剂和稳定剂,在其表面原位生长银纳米粒子(AgNPs),制备了具有良好分散性的GQDs/AgNPs纳米复合物,其粒径小于30 nm。GQDs/AgNPs纳米复合物具有类过氧化物酶的催化活性,能有效催化H2O2氧化3,3',5,5'-四甲基联苯胺(TMB)并发生显色反应。稳态动力学分析表明, GQDs/AgNPs催化动力学遵循典型的Michaelis-Menten模型,其催化机理符合乒乓机制。与辣根过氧化物酶(HRP)相比,GQDs/AgNPs纳米复合物具有更强的亲和性。基于GQDs/AgNPs的催化活性和葡萄糖氧化产生H2O2的原理,建立了H2O2和葡萄糖的比色检测方法,检出限分别为0.18和1.6 μmol/L。将本方法应用于血浆中葡萄糖的检测分析,结果与标准方法相符。

English

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  • 收稿日期:  2015-07-16
  • 网络出版日期:  2015-08-13
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