We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Enhanced electrocatalytic performance of polyethyleneimine-modified CNTs composite cathode for H<sub>2</sub>O<sub>2</sub> electrogeneration.
- Authors
Xin, Ping; Li, Hongjiang; Huang, Ziwei; Fu, Haojie; Lu, Chen; Zhang, Shiyu; Gu, Ying-Ying
- Abstract
In this study, Polyethyleneimine (PEI) was utilized to modulate the electronegativity of carbon nanotubes (CNTs) through a mild method to promote its electrocatalytic performance for electrosynthesis of H2O2. The characterization results indicate the co-doping of oxygen and nitrogen elements and the CNTs-80 (modification temperature was 80 °C) catalyst exhibited the highest content of nitrogen (4.05%) and OII functional groups (73.5%). Accordingly, the GF/CNTs-80/PTFE cathode exhibited the highest H2O2 yield of 116.34 mg L−1 at pH 7, suggesting that the introduction of nitrogen and oxygen-containing functional groups (carboxyl and ether groups) effectively enhances its 2e− ORR performance. Furthermore, a more positive surface potential and reduced diffusion resistance were conducive to the electrochemical generation of H2O2. This research contributes to the understanding of surface potential modulation and highlights the potential of PEI-modified CNTs cathodes for efficient H2O2 electrogeneration. Highlights: PEI-modified CNTs catalysts for electrochemical production of H2O2 were synthesized. The introduction of O-containing functional groups enhanced the catalytic activity of the composite cathode. The positive surface potential enhanced the catalytic activity of the composite cathode. The GF/CNTs-80/PTFE composite cathode achieved the highest H2O2 yield of 116.34 mg·L−1at pH 7.
- Subjects
CATHODES; SURFACE potential; POLYTEF; ELECTROSYNTHESIS; CARBON nanotubes; CATALYTIC activity; CARBOXYL group
- Publication
Applied Physics A: Materials Science & Processing, 2024, Vol 130, Issue 5, p1
- ISSN
0947-8396
- Publication type
Article
- DOI
10.1007/s00339-024-07433-7