期刊
JOURNAL OF MOLECULAR LIQUIDS
卷 211, 期 -, 页码 970-980出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molliq.2015.08.035
关键词
Nanoceramics; Nano-structured sensor; Response surface methodology; Salicylic acid; Electrochemical techniques
资金
- University of Kashan [211037-17]
The aim of this research is preparation of a nanoceramic modified sensor for electrochemical studies and determination of salicylic acid (SA). At first, the sol-gel method was used for synthesizing of nickel titanate (NiTiO3) nanoceramics. The characterization of the nanoceramics was studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Then, the nanoparticles were used for fabrication of a carbon paste modified electrode. The structure of the modified electrode was studied by SEM and cyclic voltammetry (CV). Electrochemical studies of SA were performed by various techniques such as CV, chronoamperometry, chronocoulometry, linear sweep voltammetry (LSV) and differential pulse voltammetry (DPV). For achieving the best sensitivity, multivariate optimization was used based on rotatable central composite design (RCCD) and response surface methodology (RSM). Under the optimized conditions, two linear calibration ranges of 3.0-40.0 mu M and 40.0-1000.0 mu M, for SA were obtained with the detection limit of 68.0 nM (S/N = 3). Finally the NiTiO3 nanopowder modified carbon paste electrode (NiTiO3/CPE) could be employed for the determination of SA in real samples with satisfactory results. (C) 2015 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据