Pt Nanoparticle-Loaded Graphene Aerogel Microspheres with Excellent Methanol Electro-Oxidation Performance.
Miao HeGuoxia FeiZhuo ZhengZhengang ChengZhanhua WangHesheng XiaPublished in: Langmuir : the ACS journal of surfaces and colloids (2019)
Platinum-decorated graphene aerogel microspheres were fabricated through a combined electrospraying, freeze-casting, and solvothermal process. Platinum nanoparticles with a narrow size distribution are evenly anchored on the graphene aerogel microspheres without agglomeration benefitting from the distinct center-diverging microchannel structure of the graphene aerogel microspheres, which results in the as-prepared catalysts presenting excellent electrocatalytic performance including high electrocatalytic activity and high poison tolerance toward methanol electro-oxidation, showing great potential for direct methanol fuel cell anode catalysts. In particular, the platinum-decorated graphene aerogel microspheres exhibit an extremely high mass activity of 1098.9 mA mg-1 toward methanol oxidation as well as excellent antipoisoning ability, which are dramatically enhanced compared with Pt particles dispersed on graphene oxide and commercial carbon black supports.
Keyphrases
- reduced graphene oxide
- gold nanoparticles
- walled carbon nanotubes
- molecularly imprinted
- room temperature
- carbon nanotubes
- carbon dioxide
- highly efficient
- hydrogen peroxide
- drug delivery
- single cell
- cell therapy
- cancer therapy
- high resolution
- high speed
- mesenchymal stem cells
- risk assessment
- solid phase extraction
- ionic liquid
- simultaneous determination