Related Experiment Video
Updated: Feb 1, 2026

Synthesis and Catalytic Performance of Gold Intercalated in the Walls of Mesoporous Silica
Published on: July 9, 2015
Effect of H2 SO4 Solution Treatment on Adhesion, Charge Transfer, and Catalytic Performance of Screen-Printed
Di Xu1, Hujiang Shen1, Wei Wang1
1CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 201899, P. R. China.
Abstract:
Post-treatment was performed for poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) films screen-printed on fluorine-doped tin oxide (FTO) substrates, to improve their charge transfer efficiency. Different H2 SO4 solutions, including concentrated H2 SO4 and H2 SO4 diluted with H2 O or dimethyl sulfoxide (DMSO), were adopted during the post-treatment. The adhesion of the as-treated films was evaluated by adhesive tape peeling tests, the surface morphology and vertical charge transfer from the films to the substrates were investigated by current-sensing atomic force microscopy, and the catalytic activities toward I3- reduction of PEDOT:PSS films were characterized by electrochemical measurements. It is discovered that selecting proper H2 SO4 solutions is crucial to improve the charge transfer efficiency and catalytic performance while maintaining reliable adhesion of the film on the substrates, with H2 SO4 /DMSO performing best as the solution for post-treatment. A mechanistic explanationis proposed based on different interactions among solution, PEDOT:PSS, and the substrate for various post-treatment solutions.
Related Concept Videos
Formal Charges
Adhesion
Capillary action is a result of water’s adhesive tendencies. When a narrow...
Ions and Ionic Charges
Electrolyte and Nonelectrolyte Solutions
Turnover Number and Catalytic Efficiency
Chymotrypsin is a pancreatic enzyme that breaks down proteins during digestion....
Catalytically Perfect Enzymes
Most enzymes...

