Prussian blue-type rare-earth-doped chemically modified electrodes, methanol, formaldehyde, electro-catalytic properties and Analytical Application

Title: Prussian blue-type rare-earth-doped chemically modified electrodes, methanol, formaldehyde, electro-catalytic properties and Analytical Application
　　Author: Pan Yuying
　　Degree-granting units: Northwest Normal University
　　Keywords: Chemically modified electrode;; class Prussian blue;; electro-catalytic oxidation;; methanol;; formaldehyde
　　Summary:
　　Chemically modified electrode electrochemical and electroanalytical chemistry is a hot area of ​​research. In the preparation of modified electrode materials, as represented by Prussian blue iron-core metal cyanide has its good chemical and electrochemical properties. Magnetic lifter The film-modified electrode in the material testing, bio-sensors, battery electrode materials, solid-state batteries, etc. has been widely used. For these reasons, this paper aims to study a new class of rare-earth-doped Prussian blue chemically modified electrodes, in order to enhance its catalytic activity and analysis of measured performance, but also to broaden its field of analytical chemistry in the power range of applications.
　　This article was prepared by electrochemical deposition of a new class of rare-earth-doped Prussian blue chemically modified electrodes, for the first time discovered methanol on the modified electrode has good electrocatalytic activity and anti-drug and of the role of formaldehyde have good electro-catalytic oxidation role, and the success of the modified electrode for environmental water samples the detection of formaldehyde content.
　　This paper is divided into four chapters:
　　Chapter I: Overview
　　This section summarizes the following main aspects: (1) class of Prussian Blue and Prussian Blue chemically modified electrode characteristics, preparation methods and characterization methods, summed up like Prussian Blue chemically modified electrode application analysis, and rare-earth iron-cyanide compounds chemically modified electrode trend was predicted. (2) outlines the development of direct methanol fuel cell and the problems cited methanol anode material in a variety of platinum-based catalyst on the anode and the composite electro-catalytic oxidation behavior. (3) the hazards of formaldehyde and commonly used detection methods, formaldehyde chemically modified electrodes in the electro-catalytic oxidation behavior and testing. This part of the total of 119 references are cited.
　　Chapter II: The electro-deposition method to Eu - iron cyano-bridged binuclear platinum electrode surface modified in the (Eu-Fe film), methanol was first found in the modified electrode has good electro-catalytic oxidation activity and good anti-drug of intermediate role. By comparing the methanol-modified electrode with the bare platinum electrode cyclic voltammetry data, found in modified electrode methanol oxidation current increases by about 20 times, and the peak potential shifted slightly negative, and initially speculated that the methanol in the modified electrode oxidation reaction mechanism of constant speed steps.
　　Chapter III: The electro-deposition method to Nd-doped ion (III) in the class of Prussian blue modified platinum electrode surface (Nd-PB/Pt), found formaldehyde in the modified electrode has good electro-catalytic oxidation activity and good intermediate resistance to poisoning effect. By comparing the formaldehyde in the modified electrode with the bare platinum electrode cyclic voltammetry data, found in modified electrode formaldehyde oxidation http://www.999magnet.com/products/131-magnetic-lifter current increases by about 3-fold, and the peak potential shifted slightly negative; the electrode voltammetric response for formaldehyde with good reproducibility and stability.
　　Chapter IV: first doped neodymium ion (III) in the class of Prussian blue modified platinum electrode surface (Nd-PB/Pt), and then through the electrodeposition of the platinum particles deposited on the surface of modified electrode was prepared platinum particles / class Prussian blue composite film chemically modified electrode (Pt / Nd-PB/Pt). Under the optimum conditions, the modified electrode for the detection of formaldehyde, formaldehyde oxidation peak current is proportional to the concentration of 1 × 10-4 ~ 1 × 10-2 mol / L range showed a good linear relationship, test limit of 5 × 10-5 mol / L, the Yellow River water samples were determined by simulation, simulation of the formaldehyde content of water samples, recoveries were 95.6% ~ 103.4%, with satisfactory results.
　　Degree Year: 2010