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In situ assembly of sulfur-doped carbon quantum dots surrounded iron(III) oxide nanocomposite; a novel electrocatalyst for highly sensitive detection of antipsychotic drug olanzapine
Journal of Molecular Liquids ( IF 5.3 ) Pub Date : 2018-07-17 , DOI: 10.1016/j.molliq.2018.07.059
Ganesan Muthusankar , Arumugam Sangili , Shen-Ming Chen , Rajendran Karkuzhali , Murugan Sethupathi , Gopalakrishnan Gopu , Selvam Karthick , Ramdhass Keerthika Devi , Nallathambi Sengottuvelan

Herein, we report the synthesis of sulfur-doped carbon quantum dots (S-CQDs) chemically incorporated with iron oxide nanoparticles (S-CQDs/Fe2O3) using hydrothermal synthesis strategy. The as-synthesized nanocomposite was characterized using powder X-ray diffraction, fourier transform infrared spectroscopy, transmission electron microscope, thermogravimetric analysis, and energy dispersive X-ray spectroscopy. We have analyzed the clear electrochemical kinetics of the S-CQDs/Fe2O3 nanocomposite modified glassy carbon electrode. Addition to this, electrochemical sensing property of S-CQDs/Fe2O3/GCE towards the detection of antipsychotic drug olanzapine (OLZ) was explored. Remarkably, S-CQDs/Fe2O3/GCE has shown the good electrocatalytic activity for OLZ oxidation and also exhibits a very low detection limit and sensitivity of about 0.006 μM and 0.88 μA μM−1 cm−2 respectively. Further, the proposed sensor has applied for the detection of OLZ in urine samples.



中文翻译:

掺杂硫的碳量子点的原位组装包围氧化铁(III)纳米复合材料;用于抗精神病药物奥氮平的高灵敏度检测的新型电催化剂

在本文中,我们报告了使用水热合成策略化学合成掺入氧化铁纳米颗粒(S-CQDs / Fe 2 O 3)的硫掺杂碳量子点(S-CQDs)。使用粉末X射线衍射,傅立叶变换红外光谱,透射电子显微镜,热重分析和能量色散X射线光谱对合成后的纳米复合材料进行表征。我们已经分析了S-CQDs / Fe 2 O 3纳米复合改性玻璃碳电极的清晰的电化学动力学。除此之外,S-CQDs / Fe 2 O 3的电化学传感特性/ GCE技术用于检测抗精神病药物奥氮平(OLZ)。值得注意的是,S-CQDs / Fe 2 O 3 / GCE已显示出对OLZ氧化的良好电催化活性,并且还显示出非常低的检测限和灵敏度,分别约为0.006μM和0.88μAμM- 1  cm -2。此外,提出的传感器已经应用于尿液样品中OLZ的检测。

更新日期:2018-07-17
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