title: Electrochemical fabrication of copper-containing metal-organic framework films as amperometric detectors for bromate determination.
abstract: A facile electrochemical plating strategy has been employed to prepare the electroactive metal-organic framework film (NENU-3) onto a copper electrode in the acid electrolyte containing 1,3,5-benzenetricarboxylic acid (H3BTC) and phosphotungstic acid (PTA). The as-made NENU-3 films have been characterized using powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy and thermogravimetric analyses (TGA). These analyses indicate that NENU-3 films have high phase purity and high stability. Further, different electrochemical techniques are utilized for measuring the electrochemical behaviors of the NENU-3 film electrodes. Accordingly, the kinetic parameters of a NENU-3 film electrode towards the electrocatalytic reduction of bromate are obtained, including the electron transfer coefficient (α), the catalytic rate constant (ks), and the diffusion coefficient (D). The film electrodes present excellent electrocatalytic ability for the bromate reduction, and can be used successfully for the amperometric detection of bromate. Under the optimized conditions, the proposed sensor exhibits a wide linear range (0.05-72.74 mM) and a lower detection limit (12 μM) measured by chronoamperometry (CA). Moreover, the films possess high electrochemical stability and strong anti-interference capability in the bromate detection process. It has been demonstrated that the electrochemical plating method reported here offers a reliable and efficient way to fabricate MOF films on conductive substrates for bromate detection.
authors.affiliation: College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, Heilongjiang 150025, P. R. China. qufengyuhsd@163.com zhangfeng_chem@aliyun.com.
authors.forename: Erbin
authors.initials: E
authors.lastname: Shi
authors.affiliation: Key Laboratory of Polyoxometalate Science of the Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun, Jilin 130024, P.R. China.
authors.forename: Xiaoqin
authors.initials: X
authors.lastname: Zou
authors.affiliation: College of Chemistry, Jilin University, Changchun, Jilin 130012, P.R. China.
authors.forename: Jia
authors.initials: J
authors.lastname: Liu
authors.affiliation: College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, Heilongjiang 150025, P. R. China. qufengyuhsd@163.com zhangfeng_chem@aliyun.com.
authors.forename: Huiming
authors.initials: H
authors.lastname: Lin
authors.affiliation: College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, Heilongjiang 150025, P. R. China. qufengyuhsd@163.com zhangfeng_chem@aliyun.com.
authors.forename: Feng
authors.initials: F
authors.lastname: Zhang
authors.affiliation: College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, Heilongjiang 150025, P. R. China. qufengyuhsd@163.com zhangfeng_chem@aliyun.com.
authors.forename: Shaoxuan
authors.initials: S
authors.lastname: Shi
authors.affiliation: College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, Heilongjiang 150025, P. R. China. qufengyuhsd@163.com zhangfeng_chem@aliyun.com.
authors.forename: Fenghua
authors.initials: F
authors.lastname: Liu
authors.affiliation: Key Laboratory of Polyoxometalate Science of the Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun, Jilin 130024, P.R. China.
authors.forename: Guangshan
authors.initials: G
authors.lastname: Zhu
authors.affiliation: College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, Heilongjiang 150025, P. R. China. qufengyuhsd@163.com zhangfeng_chem@aliyun.com.
authors.forename: Fengyu
authors.initials: F
authors.lastname: Qu