当前位置: X-MOL 学术New J. Chem. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Green synthesis and characterization of Ag nanoparticles in a phytic acid/ascorbic acid/sodium hydroxide system and their application in the electrochemical detection of H2O2
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2023-03-23 , DOI: 10.1039/d2nj06332h
Baolong Niu 1, 2 , Hong Wang 1, 2 , Yanwei Zhang 1, 2 , Bin Nie 1, 2 , Huifang Wang 2 , Xiaojie Lian 3, 4 , Wenfeng Li 1, 2
Affiliation  

Hydrogen peroxide (H2O2), as one of the most ubiquitous compounds, is widely used in many fields and performs important functions in physiological processes. Therefore, it is of great practical significance to develop a rapid and accurate detection method for trace H2O2 to avoid its harmful effects to human health and for environmental safety and medical diagnosis. In particular, Ag nanoparticles (Ag NPs) show great potential in the field of electrochemical H2O2 sensors because of their excellent electrocatalytic reduction activity to H2O2. Herein, plant extracts (phytic acid (PA) and ascorbic acid (AA)) obtained from biological methods were introduced into chemical synthesis methods, and a green synthesis system for controllable preparation of Ag NPs using PA/AA/NaOH was established. Moreover, the synthesis process and mechanism of PA coated Ag NPs (Ag NPs@PA) were described by means of XPS, particle size analysis and a schematic diagram. Furthermore, a simple electrochemical H2O2 sensor was constructed by modifying Ag NPs@PA onto the surface of a glassy carbon electrode (GCE). The sensor exhibited the characteristics of a quick response (∼0.3 s), good linear relationship, a wide linear range (1–4 μM, 4–6000 μM) and a low detection limit (1.5 μM) for H2O2 detection, showing excellent comprehensive detection performance. Its sensing mechanism and dynamic process were also investigated. In addition, the sensor presented outstanding selectivity, anti-interference, repeatability, reproducibility and feasibility of practical applications, providing a new strategy for the quantitative detection of H2O2.

中文翻译:

植酸/抗坏血酸/氢氧化钠体系中纳米银的绿色合成与表征及其在电化学检测H2O2中的应用

过氧化氢(H 2 O 2)作为最普遍存在的化合物之一,广泛应用于许多领域,并在生理过程中发挥重要作用。因此,发展一种快速、准确的痕量H 2 O 2检测方法,避免其对人体健康的危害,对环境安全和医学诊断具有重要的现实意义。特别是,Ag 纳米粒子 (Ag NPs) 在电化学 H 2 O 2传感器领域显示出巨大的潜力,因为它们对 H 2 O 2具有优异的电催化还原活性. 在此,将通过生物方法获得的植物提取物(植酸(PA)和抗坏血酸(AA))引入化学合成方法,建立了使用PA/AA/NaOH可控制备Ag NPs的绿色合成体系。此外,通过 XPS、粒度分析和示意图描述了 PA 包覆的 Ag NPs (Ag NPs@PA) 的合成过程和机理。此外,通过将 Ag NPs@PA 修饰到玻碳电极 (GCE) 的表面,构建了一个简单的电化学 H 2 O 2传感器。该传感器对H 2 O 2具有响应快(~0.3 s)、线性关系好、线性范围宽(1-4 μM、4-6000 μM)和低检测限(1.5 μM)等特点。检测,表现出优异的综合检测性能。还研究了其传感机制和动力学过程。此外,该传感器表现出突出的选择性、抗干扰性、重复性、再现性和实际应用的可行性,为H 2 O 2定量检测提供了新的策略。
更新日期:2023-03-23
down
wechat
bug