材料科学
佩多:嘘
循环伏安法
电化学气体传感器
傅里叶变换红外光谱
微分脉冲伏安法
纳米复合材料
高分辨率透射电子显微镜
聚吡咯
导电聚合物
分析化学(期刊)
电化学
化学工程
电极
核化学
透射电子显微镜
纳米技术
化学
聚合物
有机化学
复合材料
物理化学
聚合
图层(电子)
工程类
作者
M. Faisal,Manawwer Alam,Jahir Ahmed,Abdullah M. Asiri,Jari S. Algethami,A.S. Alkorbi,Osama A. Madkhali,Mahmood D. Aljabri,Mohammed M. Rahman,Farid A. Harraz
标识
DOI:10.1016/j.jiec.2023.02.007
摘要
This study was performed to prepare gold-modified-PPy(polypyrrole)-C/C3N4 nanocomposites (NCs) by simple pyrolysis and ultra-sonication techniques. The prepared NC was coated onto glassy carbon electrode (GCE) to achieve a modified, active working electrode of nitrite (NO2) electrochemical sensor. The structural morphology, crystallographic study, and opto-electronic properties of NCs were evaluated applying Field-Emission Scanning Electron Microscopy (FESEM), Energy Dispersive Spectroscopy (EDS), High-Resolution Transmission Electron Microscopy (HRTEM), Brunauer-Emmett-Teller (BET), powder X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), and Ultraviolet–visible spectroscopy (UV–vis.) analysis. Besides this, the electrochemical characterization of NCs was assessed by cyclic voltammetry (CV) and displayed substantial outcome favorable to electron sensing substrates. The working electrode prepared by coating of [email protected]/C3N4 NCs on GCE using conducting binder poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS), which exhibited linear electrochemical responses applying differential pulse voltammetry (DPV) to the detection of NO2 in a wider range of 1.5 ∼ 22.5 µM in 7.0 pH buffer defined as linear dynamic range (LDR). Additionally, the NO2 sensor showed good sensitivity (91.1899 µAµM-1cm−2) and low limit of detection (LOD; 1.11 ± 0.05 µM) which are appreciable. Other parameters, reproducibility and response time were investigated properly and also found as reliable. Furthermore, the assembled sensor based on [email protected]/g-C3N4 NCs/GCE disclosed its consistent performances in analyzing of environmental samples. Thus, this study exposed a facile strategy to the development of efficient electrochemical sensor using organometallic nanocomposites.
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