Binary Metal Oxide Adsorbed Graphene Modified Glassy Carbon Electrode for Detection of Riboflavin,Electroanalysis

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Binary Metal Oxide Adsorbed Graphene Modified Glassy Carbon Electrode for Detection of Riboflavin
Electroanalysis ( IF 2.7 ) Pub Date : 2020-11-17 , DOI: 10.1002/elan.202060429
Arockiajawahar Anancia Grace _{1,

2} , Sukumar Thillaiarasi ₃ , Venkataraman Dharuman ₁

Affiliation

Tungsten oxide (W) decorated titanium oxide (T) adsorbed onto a graphene (Gr) and modified the glassy carbon electrode for the electrochemical quantification of riboflavin (RF) in edible food and pharmaceuticals. For comparison, nanocomposites are formed using graphene oxide (GO), reduced graphene oxide (rGO) and pure graphite (G) sheets to study the electrochemical activities towards riboflavin. The ternary WTGr modified GCE shows the highest electrocatalytic activity due to synergetic interactions between the metal oxide and graphene. The electrochemical observations are supported by the SEM, HRTEM, XRD, UV‐Vis, Zeta potential (ζ) and size data. The sensor shows a wide linear range 20 nM–2.5 μM with a detection limit 25.24 nM and sensitivity (4.249×10⁻⁸ A/nM). The fabricated sensor is validated in real samples.

中文翻译：

二元金属氧化物吸附石墨烯修饰的玻碳电极检测核黄素

氧化钨（W）修饰了吸附在石墨烯（Gr）上的氧化钛（T），并修饰了玻璃碳电极，用于化学定量食用食品和药物中的核黄素（RF）。为了进行比较，使用氧化石墨烯（GO），还原氧化石墨烯（rGO）和纯石墨（G）片形成了纳米复合材料，以研究其对核黄素的电化学活性。由于金属氧化物和石墨烯之间的协同相互作用，三元WTGr修饰的GCE表现出最高的电催化活性。电化学观察得到SEM，HRTEM，XRD，UV-Vis，Zeta电势（ζ）和尺寸数据的支持。传感器显示出20 nM–2.5μM的宽线性范围，检测极限为25.24 nM，灵敏度为（4.249×10 ^-8 A/ nM）。所制造的传感器已在真实样品中得到验证。

更新日期：2020-11-17

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