Abstract
Nitrogen-doped carbon nanotubes (N-CNTs) prepared by carbonization of polypyrrole nanotubes (PPyNTs) are used as carrier,Pt/MOx /N-CNTs electrocatalysts are successfully prepared by one-step in-situ growth of both Pt and metal oxide (MOx,M = Ce,Ti or Sn) nanoparticles.Through a series of characterization,the effects of different structural characteristics of MOx in Pt/MOx/N-CNTs on the activity of catalyst in electrocatalytic oxidation of methanol are investigated systematically. The results show that Pt/CeO2/N-CNTs has an excellent electrocatalytic activity for methanol oxidation [722 A/g(Pt)],which is 1. 36 and 1. 59 times that of Pt/ TiO2/N-CNTs and Pt/ SnO2/N-CNTs, respectively.In addition,the stripping voltammetry curve of CO shows that the order of anti-CO poisoning ability from strong to weak is Pt/CeO2/N-CNTs,Pt/TiO2/N-CNTs and Pt/SnO2/N-CNTs.The structural characteristics and methanol electrocatalytic oxidation performance of different Pt/MOx/N-CNTs are compared, which provides a basis for the industrial application of direct methanol fuel cells.
| Translated title of the contribution | Preparation of Pt/MOx/N-CNTs (M = Ce,Ti or Sn) electrocatalysts and study on their performances in methanol oxidation |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 177-183 |
| Number of pages | 7 |
| Journal | Xiandai Huagong/Modern Chemical Industry |
| Volume | 43 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - May 2023 |
| Externally published | Yes |