Fabrication of sulphur-doped graphitic carbon nitride anchored Ag@AgCl electrocatalyst for the sensing of chloramphenicol

IF 1.8 4区 化学 Q3 CHEMISTRY, ANALYTICAL Analytical Sciences Pub Date : 2024-09-06 DOI:10.1007/s44211-024-00658-9
Suparna Kallakkattil, Yarradoddappa Venkataramanappa
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Abstract

We have developed sulphur-doped graphitic carbon nitride (S-GCN) anchored Ag@AgCl electrocatalyst through a green technique for the first time for the electrochemical sensing of chloramphenicol. The Ag@AgCl nanoparticles were synthesized using Rhoeo discolor (Tradescantia spathacea) plant extract without the use of any external halide source. As per our knowledge, this is the first time Rhoeo discolor (Tradescantia spathacea) plant extract was used for the synthesis of Ag@AgCl nanoparticles without the use of any external halide source. Using sonochemical technique, the green synthesized nanoparticle was combined with S-GCN to form Ag@AgCl/S-GCN electrocatalyst. The synthesized materials were characterized by suitable techniques such as UV–visible spectroscopy, X-ray powder diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy and elemental analysis. The electrocatalytic reduction mechanism of chloramphenicol was studied with the help of electrochemical impedance spectroscopy, cyclic voltammetry, and linear sweep voltammetry. The Ag@AgCl/S-GCN modified electrode has shown a linear response in the range of 1 to 650 μM, with a LOD of 420 \(\text{nM}\). Further, the practical application of the developed sensor was analyzed using real samples such as milk and honey and satisfactory recovery rates were observed.

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用于氯霉素传感的掺硫氮化石墨碳锚定 Ag@AgCl 电催化剂的制备。
我们首次采用绿色技术开发了掺硫氮化石墨碳(S-GCN)锚定 Ag@AgCl 电催化剂,用于氯霉素的电化学传感。Ag@AgCl 纳米粒子是利用Rhoeo discolor (Tradescantia spathacea) 植物提取物合成的,不使用任何外部卤化物源。据我们所知,这是首次在不使用任何外部卤化物源的情况下,使用Rhoeo discolor(Tradescantia spathacea)植物提取物合成Ag@AgCl纳米粒子。利用超声化学技术,将绿色合成的纳米粒子与 S-GCN 结合形成 Ag@AgCl/S-GCN 电催化剂。通过紫外可见光谱、X 射线粉末衍射、傅立叶变换红外光谱、扫描电子显微镜、透射电子显微镜和元素分析等适当技术对合成材料进行了表征。利用电化学阻抗谱、循环伏安法和线性扫描伏安法研究了氯霉素的电催化还原机制。Ag@AgCl/S-GCN 修饰电极在 1 至 650 μM 范围内显示出线性响应,最低检测限为 420 nM。此外,还使用牛奶和蜂蜜等真实样品对所开发传感器的实际应用进行了分析,结果令人满意。
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来源期刊
Analytical Sciences
Analytical Sciences 化学-分析化学
CiteScore
2.90
自引率
18.80%
发文量
232
审稿时长
1 months
期刊介绍: Analytical Sciences is an international journal published monthly by The Japan Society for Analytical Chemistry. The journal publishes papers on all aspects of the theory and practice of analytical sciences, including fundamental and applied, inorganic and organic, wet chemical and instrumental methods. This publication is supported in part by the Grant-in-Aid for Publication of Scientific Research Result of the Japanese Ministry of Education, Culture, Sports, Science and Technology.
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