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Enhanced peroxidase-like activity of Mo-doped ceria nanoparticles for sensitive colorimetric detection of glucose†
Analytical Methods ( IF 2.7 ) Pub Date : 2017-11-16 00:00:00 , DOI: 10.1039/c7ay02459b Xue Jiao 1, 2, 3, 4, 5 , Wanyi Liu 1, 2, 3, 4 , Di Wu 1, 2, 3, 4 , Wenhao Liu 1, 2, 3, 4 , Hongjie Song 4, 5, 6, 7
Analytical Methods ( IF 2.7 ) Pub Date : 2017-11-16 00:00:00 , DOI: 10.1039/c7ay02459b Xue Jiao 1, 2, 3, 4, 5 , Wanyi Liu 1, 2, 3, 4 , Di Wu 1, 2, 3, 4 , Wenhao Liu 1, 2, 3, 4 , Hongjie Song 4, 5, 6, 7
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The development of highly efficient nanomaterial-based mimetic enzymes is much needed to replace natural enzymes due to their low cost, high stability and efficient catalytic ability. Herein, multiple Mo-doped CeO2 nanoparticles (Mo/CeO2 NPs) with different molar ratios of Mo were synthesized using a facile microwave-assisted method. For characterizing the as-prepared Mo/CeO2 NPs, XRD, TEM, HRTEM, BET and XPS have been performed systematically. The peroxidase-like activity of Mo/CeO2 NPs was investigated, and they exhibited enhanced peroxidase-like activity in comparison to that of pure CeO2 NPs, the best peroxidase-like activity was obtained for the Mo/CeO2 NPs when the molar ratio of Mo was 9%. On the basis of the high activity of Mo/CeO2 NPs, the reaction provides a simple, sensitive and selective method for colorimetric detection of glucose with the detection limit of 4 × 10−7 mol L−1 and in a dynamic range from 5 × 10−7 to 5 × 10−5 mol L−1. This work will pave a way for high throughput synthesis of other ultra-small doped metal oxide nanoparticles, which have bright prospects in biomedical analysis.
中文翻译：
钼掺杂的二氧化铈纳米颗粒增强的过氧化物酶样活性，用于葡萄糖的比色检测†
由于其低成本，高稳定性和有效的催化能力，迫切需要开发高效的基于纳米材料的模拟酶来代替天然酶。在此，使用简便的微波辅助方法合成了具有不同摩尔比的Mo的多个Ce掺杂CeO 2纳米颗粒（Mo / CeO 2 NPs）。为了表征所制备的Mo / CeO 2 NP，已系统地进行了XRD，TEM，HRTEM，BET和XPS表征。研究了Mo / CeO 2 NPs的过氧化物酶样活性，与纯CeO 2 NPs相比，它们表现出增强的过氧化物酶样活性，对于Mo / CeO 2而言，获得了最佳的过氧化物酶样活性。Mo的摩尔比为9％时的NP。基于Mo / CeO 2 NP的高活性，该反应提供了一种简单，灵敏，选择性的葡萄糖比色检测方法，检测限为4×10 -7 mol L -1，动态范围为5 ×10 -7至5×10 -5 mol L -1。这项工作将为高通量合成其他超小型掺杂金属氧化物纳米粒子铺平道路，这些纳米粒子在生物医学分析中具有广阔的前景。
更新日期：2017-11-16
中文翻译：
钼掺杂的二氧化铈纳米颗粒增强的过氧化物酶样活性，用于葡萄糖的比色检测†
由于其低成本，高稳定性和有效的催化能力，迫切需要开发高效的基于纳米材料的模拟酶来代替天然酶。在此，使用简便的微波辅助方法合成了具有不同摩尔比的Mo的多个Ce掺杂CeO 2纳米颗粒（Mo / CeO 2 NPs）。为了表征所制备的Mo / CeO 2 NP，已系统地进行了XRD，TEM，HRTEM，BET和XPS表征。研究了Mo / CeO 2 NPs的过氧化物酶样活性，与纯CeO 2 NPs相比，它们表现出增强的过氧化物酶样活性，对于Mo / CeO 2而言，获得了最佳的过氧化物酶样活性。Mo的摩尔比为9％时的NP。基于Mo / CeO 2 NP的高活性，该反应提供了一种简单，灵敏，选择性的葡萄糖比色检测方法，检测限为4×10 -7 mol L -1，动态范围为5 ×10 -7至5×10 -5 mol L -1。这项工作将为高通量合成其他超小型掺杂金属氧化物纳米粒子铺平道路，这些纳米粒子在生物医学分析中具有广阔的前景。
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