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Amphiphilic dendrimer loaded prussian blue nanoparticle for the detection of hydrogen peroxide
Indian Journal of Chemical Technology ( IF 0.5 ) Pub Date : 2022-11-18
Iqbal Pakrudheen, Ayyappa Bathinapatla, Eagambaram Murugan

A novel enzyme-free electrochemical sensor has been developed based on the prussian blue nanoparticles (PBNPs) loaded on a glassy carbon electrode (GCE) modified with amphiphilic poly(propylene imine) dendrimer (PBNPs/APPI(G3)/GCE) for sensing of hydrogen peroxide. The structural characterization of the newly synthesized template of APPI(G3) has been carried out by fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance spectroscopy (NMR) and matrix-assisted laser desorption/ionization coupled to time-of-flight mass spectroscopic (MALDI-TOF) studies. The electrodeposition and stabilization of PBNPs on the APPI(G3) template have been characterized by cyclic voltammetry and field emission scanning electron microscope (FESEM) studies. From the results, a homogeneous distribution of PBNPs with an average size of 50-100 nm on the APPI(G3) modified electrode surface has been observed. The PBNPs/APPI(G3)/GCE has shown an excellent performance towards the detection of hydrogen peroxide with ample electrochemical, mechanical stability, and good sensitivity to the other prussian blue-based H2O2 sensors. The developed sensor exhibit a linear response for H2O2 reduction over the concentration range of 100 to 1000 μM with a detection limit of 60 μM (S/N = 3), and sensitivity of 0.012 AM-1 using the amperometric method. The obtained results have shown that PBNPs/APPI(G3)/GCE can be a promising electrochemical sensing platform for the detection of H2O2 in chemical and biological analysis.

中文翻译:

两亲性树枝状大分子负载普鲁士蓝纳米颗粒用于检测过氧化氢

基于普鲁士蓝纳米粒子 (PBNPs) 负载在两亲性聚丙烯亚胺树枝状聚合物 (PBNPs/APPI(G3)/GCE) 修饰的玻碳电极 (GCE) 上,开发了一种新型无酶电化学传感器,用于感测过氧化氢。通过傅立叶变换红外光谱 (FT-IR)、核磁共振光谱 (NMR) 和耦合到飞行时间的基质辅助激光解吸/电离,对新合成的 APPI(G3) 模板进行了结构表征质谱 (MALDI-TOF) 研究。PBNPs 在 APPI(G3) 模板上的电沉积和稳定性已通过循环伏安法和场发射扫描电子显微镜 (FESEM) 研究表征。从结果来看,在 APPI(G3) 修饰的电极表面观察到平均粒径为 50-100 nm 的 PBNPs 均匀分布。PBNPs/APPI(G3)/GCE 在检测过氧化氢方面表现出优异的性能,具有充足的电化学和机械稳定性,并且对其他基于普鲁士蓝的 H2O2 传感器具有良好的灵敏度。开发的传感器在 100 至 1000 μM 的浓度范围内对 H2O2 还原呈线性响应,检测限为 60 μM(S/N = 3),使用安培法的灵敏度为 0.012 AM-1。获得的结果表明,PBNPs/APPI(G3)/GCE 可以成为化学和生物分析中检测 H2O2 的有前途的电化学传感平台。PBNPs/APPI(G3)/GCE 在检测过氧化氢方面表现出优异的性能,具有充足的电化学和机械稳定性,并且对其他基于普鲁士蓝的 H2O2 传感器具有良好的灵敏度。开发的传感器在 100 至 1000 μM 的浓度范围内对 H2O2 还原呈线性响应,检测限为 60 μM(S/N = 3),使用安培法的灵敏度为 0.012 AM-1。获得的结果表明,PBNPs/APPI(G3)/GCE 可以成为化学和生物分析中检测 H2O2 的有前途的电化学传感平台。PBNPs/APPI(G3)/GCE 在检测过氧化氢方面表现出优异的性能,具有充足的电化学和机械稳定性,并且对其他基于普鲁士蓝的 H2O2 传感器具有良好的灵敏度。开发的传感器在 100 至 1000 μM 的浓度范围内对 H2O2 还原呈线性响应,检测限为 60 μM(S/N = 3),使用安培法的灵敏度为 0.012 AM-1。获得的结果表明,PBNPs/APPI(G3)/GCE 可以成为化学和生物分析中检测 H2O2 的有前途的电化学传感平台。开发的传感器在 100 至 1000 μM 的浓度范围内对 H2O2 还原呈线性响应,检测限为 60 μM(S/N = 3),使用安培法的灵敏度为 0.012 AM-1。获得的结果表明,PBNPs/APPI(G3)/GCE 可以成为化学和生物分析中检测 H2O2 的有前途的电化学传感平台。开发的传感器在 100 至 1000 μM 的浓度范围内对 H2O2 还原呈线性响应,检测限为 60 μM(S/N = 3),使用安培法的灵敏度为 0.012 AM-1。获得的结果表明,PBNPs/APPI(G3)/GCE 可以成为化学和生物分析中检测 H2O2 的有前途的电化学传感平台。
更新日期:2022-11-20
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