Simple fabrication of flake-like NH2-MIL-53(Cr) and its application as an electrochemical sensor for the detection of Pb2+
Simple fabrication of flake-like NH2-MIL-53(Cr) and its application as an electrochemical sensor for the detection of Pb2+
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DOI：
10.1016/j.cej.2015.12.099
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发表时间：
2016-04-01
影响因子：
15.1
通讯作者：
Zheng, Zishan
中科院分区：
文献类型：
--
作者：
Guo, Hongxu;Wang, Dongfang;Zheng, Zishan
采用简单回流法制备了一种新型金属-有机骨架（莫伊）材料--片状NH 2-MIL-53（Cr），并采用傅里叶变换红外光谱（FT-IR）、X射线衍射（XRD）、扫描电子显微镜（SEM）和X射线光电子能谱（XPS）对其进行了表征。所制备的MOF被认为是一种有效的材料，用于选择性电化学检测微克级的铅2+在水溶液中。检测采用方波阳极溶出伏安法。NH 2-MIL-53（Cr）修饰电极对Pb 2+具有良好的选择性和稳定性。研究了该修饰电极的电化学性能和应用。操作参数，如pH值，沉积电位和沉积时间，也进行了优化，以检测痕量的金属离子。该方法为利用MOF材料进行重金属检测提供了一种新的策略。(C)2016爱思唯尔B. V.保留所有权利。
A novel metal-organic framework (MOE) material, flake-like NH2-MIL-53(Cr), was prepared by a simple reflux method and then characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). The as-prepared MOF was found to be an effective material for the selective electrochemical detection of microgram levels of Pb2+ in aqueous solution. Detection was performed by square wave anodic stripping voltammetry. The NH2-MIL-53(Cr)-modified electrode showed excellent selectivity and stability for Pb2+ detection. The electrochemical properties and applications of the modified electrode were studied. Operational parameters such as pH, deposition potential, and deposition time, were also optimized to detect trace amounts of metal ions. This method offers a new strategy for heavy metal detection using MOF materials. (C) 2016 Elsevier B.V. All rights reserved.