Department of Bioelectronics and Biosensors, Alagappa University, Karaikudi 630003, Tamilnadu, India.
Department of Electronic Engineering, Chemistry and Materials Engineering, University of Messina, Messina 98166, Italy.
J Nanosci Nanotechnol. 2019 Apr 1;19(4):2034-2043. doi: 10.1166/jnn.2019.15760.
Manganese (Mn) doped hydroxyapatite (HA) nanoparticles were synthesized by a simple microwave irradiation method and characterized using XRD, SEM, micro-Raman, FTIR, XPS and vibrating sample magnetometer (VSM) methods. The as prepared 3 M% Mn doped HA (3 M% Mn-HA) nanoparticles modified glassy carbon electrode (GCE) showed an excellent electrocatalytic activity towards the oxidation of hydroquinone (HQ). The electrochemical studies demonstrated that the 3 M% Mn-HA nanoparticles modified GCE detects HQ linearly over a wide concentration range of 1.0×10 to 1.6×10 M with the lowest detection limit of 11 nM at neutral pH (7.0) in PBS. Furthermore, Mn-HA modified GCE exhibited an excellent stability, reproducibility and anti-interference ability against a number of potential electroactive species and metal ions and proved to be useful for the estimation of the HQ in tap water and industry waste water with satisfactory recovery.
采用简单的微波辐射法合成了锰（Mn）掺杂羟基磷灰石（HA）纳米粒子，并通过 XRD、SEM、微拉曼、FTIR、XPS 和振动样品磁强计（VSM）方法进行了表征。所制备的 3 M%Mn 掺杂 HA（3 M%Mn-HA）纳米粒子修饰的玻碳电极（GCE）对氢醌（HQ）的氧化表现出优异的电催化活性。电化学研究表明，3 M%Mn-HA 纳米粒子修饰的 GCE 在中性 pH（7.0）的 PBS 中，在 1.0×10 至 1.6×10 M 的宽浓度范围内对 HQ 进行线性检测，检测限低至 11 nM。此外，Mn-HA 修饰的 GCE 表现出优异的稳定性、重现性和对多种潜在电活性物质和金属离子的抗干扰能力，并且在自来水中和工业废水中 HQ 的测定中表现出良好的回收率，证明是有用的。
