用于高性能 H2O2 电化学传感的 Au 纳米颗粒@UiO-66 复合薄膜涂层碳布基底,Inorganic Chemistry

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用于高性能 H2O2 电化学传感的 Au 纳米颗粒@UiO-66 复合薄膜涂层碳布基底
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2023-06-26 , DOI: 10.1021/acs.inorgchem.3c01148
Xueying Chai ₁ , Shunsheng Ye ₁ , Feng Wang ₁ , Hehe Yuan ₁ , Min Liu ₁ , Fuqiang Fan ₁ , Liying Zhang ₁ , Xuemin Zhang ₁ , Tieqiang Wang ₁ , Yu Fu ₁

Affiliation

由于H ₂ O ₂的强氧化性，快速、准确、灵敏、稳定的过氧化氢(H ₂ O ₂ )传感器在化工、食品、医药、家用洗涤剂、环境监测等领域受到广泛关注。这里，高性能 H ₂ O ₂电化学传感平台是基于涂在碳布（CC）电极上的Au纳米粒子@UiO-66薄膜（Au NPs@UiO-66/CC电极）提出的。Au NPs@UiO-66/CC电极是通过在功能化三维CC电极上溶剂热生长UiO-66薄膜，然后在周期性恒电流脉冲电流下将Au NPs原位沉积到UiO-66薄膜中来制备的。。原位制备策略极大地改善了Au NPs@UiO-66和CC基板之间的电相互作用，而不牺牲Au NPs@UiO-66/CC电极的电化学活性。同时，由于三维Au NPs@UiO-66/CC电极的高比表面积，优化后的Au NPs@UiO-66/CC电极表现出优异的H 2 电化学检测能力_。O ₂具有广泛的线性范围 (0.1–21 mM)、高灵敏度 (1048.01 μA mM ^–1 cm ^–2 )、检测下限 [0.033 μM (S/N = 3)] 和定量限 [0.109 μM （信噪比=3）]。同时，UiO-66薄膜中Au NPs的封装结构也赋予了复合电极特定的传感性能，因为UiO-66薄膜的规则开口通道可以防止大尺寸干扰物与电化学活性物质发生反应。金纳米颗粒。结合所有这些优点，所提出的传感平台将在电化学传感器和生物电子学方面展现出巨大的潜力。

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Au Nanoparticles@UiO-66 Composite Film-Coated Carbon Cloth Substrate for High-Performance H2O2 Electrochemical Sensing

Due to the strong oxidizability of H₂O₂, rapid, accurate, sensitive, and stable sensors of hydrogen peroxide (H₂O₂) have attracted wide attention in the chemical industry, food, medicine, household detergents, and environmental monitoring fields. Here, a high-performance H₂O₂ electrochemical sensing platform is proposed based on an Au nanoparticles@UiO-66 film coated on a carbon cloth (CC) electrode (Au NPs@UiO-66/CC electrode). The Au NPs@UiO-66/CC electrode was prepared through solvothermal growth of a UiO-66 film on a functionalized three-dimensional CC electrode, followed by in situ deposition of Au NPs into the UiO-66 film under a periodic galvanostatic pulse current. The in situ preparation strategy greatly improves the electrical interaction between Au NPs@UiO-66 and the CC substrate without sacrificing the electrochemical activity of the Au NPs@UiO-66/CC electrode. Meanwhile, thanks to the high specific surface area of the three-dimensional Au NPs@UiO-66/CC electrode, the optimized Au NPs@UiO-66/CC electrode illustrates excellent electrochemical detection capability for H₂O₂ with an extensive linear range (0.1–21 mM), high sensitivity (1048.01 μA mM^–1 cm^–2), and lower limit of detection [0.033 μM (S/N = 3)] and limit of quantification [0.109 μM (S/N = 3)]. At the same time, the encapsulated structure of Au NPs in the UiO-66 film also endows the composite electrode with specific sensing performance owing to the regular opening channels of the UiO-66 films that prevent large-size interferents from reacting to the electrochemically active Au NPs. Together with all these advantages, the proposed sensing platform would exhibit great potential for electrochemical sensors and bioelectronics.

更新日期：2023-06-26

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