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Electrode surface chemical modification coating performance

Author: SunXiaoLiang
Tutor: XiaoYingHong
School: Nanjing University of Technology and Engineering
Course: Materials Science
Keywords: Polypyrrole Linear sweep voltammetry Contact angle Surface morphology Electrochemical properties
CLC: TG174
Type: Master's thesis
Year: 2005
Downloads: 102
Quote: 0
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Abstract


This paper studies the surface properties of polypyrrole electrochemical polymerization of suitable potential and resulting polypyrrole , and polypyrrole film using two different methods of preparation with special morphology . Polypyrrole chemical modified electrode was prepared under the same conditions , to analyze the curve characteristics , and to determine the optimum polymerization potential of 0.6V to 1.0V ; study different dopant by linear sweep voltammetry (LSV) , a polymerization time , the polymerization potential , the monomer concentration , and dopant concentration of the prepared polypyrrole modified electrode surface contact angle obtained polymerization time was 5min polymerization potential 0.7V , the monomer concentration of 0.4mol / L, a dopant concentration of 0.5 mol / L, prepared polypyrrole film having a minimum contact angle, to show that the best prepared under conditions resulting polypyrrole film hydrophilic ; using aluminum / three aluminum oxide template as an electrode to obtain a polypyrrole, which is different from conventional cauliflower-like surface morphology - micro tentacle morphology study found optimal polymerization conditions for potential 1.0V the monomer concentration 0.2mol / L, polymerization time 1600s with . The study also found that the use of non - template polymerization can also be obtained a polypyrrole film having a a special micro tentacle morphology , through the study of its electrochemical properties , it is found that the polymerization conditions for the potential 0.6V , the dopant concentration of 0.1 mol / L , the polymerization time 120min the specific surface area and the best electrochemical performance when micro tentacles morphology conducive to cell attachment and growth .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metallurgy and Heat Treatment > Metal corrosion protection,metal surface treatment > Corrosion control and protection
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