Improved Sensing in Physiological Buffers by Controlling the Nanostructure of Prussian Blue Films
Improved Sensing in Physiological Buffers by Controlling the Nanostructure of Prussian Blue Films
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DOI：
10.1021/jp104796c
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发表时间：
2010-08
影响因子：
3.7
通讯作者：
Jie Du;Yanfeng Wang;Xibin Zhou;Zhonghua Xue;Xiuhui Liu;Kun Sun;Xiaoquan Lu
中科院分区：
文献类型：
--
作者：
Jie Du;Yanfeng Wang;Xibin Zhou;Zhonghua Xue;Xiuhui Liu;Kun Sun;Xiaoquan Lu
通过将十六烷基三甲基溴化铵（CTAB）和金纳米粒子（AuNPs）引入PB膜中，改善了普鲁士蓝（PB）电极的电化学性能。新型混合薄膜（PB/CTAB/AuNPs）是通过在 CTAB 存在下电沉积 PB 和 AuNPs 制备的。详细研究了杂化膜在某些支持电解质（K+、Na+或K+/Na+的阳离子）中的电化学行为，并在Na+基电解质中获得了明确且可逆的伏安响应。还研究了 PB/CTAB/AuNPs 电极在中性 pH 条件下对过氧化氢 (H2O2) 还原的催化活性，结果表明，在生理水平的 Na+ 存在下，H2O2 的电化学还原优于 PB 修饰电极。此外，PB/CTAB/AuNPs电极表现出良好的性能、低检测限（0.1 μM）和在宽浓度范围（0.882−195 μM）下的高稳定性。为确定性能...
The electrochemical properties of a Prussian blue (PB) electrode were improved by introducing cetyltrimethylammonium bromide (CTAB) and Au nanoparticles (AuNPs) into PB films. The novel hybrid films (PB/CTAB/AuNPs) were fabricated by electrodepositing PB and AuNPs in the presence of CTAB. The electrochemical behavior of the hybrid film in some supporting electrolyte (cations for the K+, Na+, or K+/Na+) was investigated in detail, and well-defined and reversible voltammetric responses were obtained in Na+-based electrolytes. The catalytic activity of the PB/CTAB/AuNPs electrode toward hydrogen peroxide (H2O2) reduction at a neutral pH was also investigated, and the results indicated that the electrochemical reduction of H2O2 in the presence of physiological levels of Na+ was superior to that of a PB-modified electrode. Moreover, the PB/CTAB/AuNPs electrode exhibited good performance, a low detection limit (0.1 μM), and high stability at a wide range of concentrations (0.882−195 μM). To determine the perfor...