Journal ArticleDOI
Preparation and Characterization of Multiwalled Carbon Nanotube-Supported Platinum for Cathode Catalysts of Direct Methanol Fuel Cells
TLDR
In this paper, a multiwalled carbon nanotube-supported Pt (Pt/MWNT) nanocomposites were prepared by both the aqueous solution reduction of a Pt salt (HCHO reduction) and the reduction of an ion salt in ethylene glycol solution.Abstract:
Multiwalled carbon nanotube-supported Pt (Pt/MWNT) nanocomposites were prepared by both the aqueous solution reduction of a Pt salt (HCHO reduction) and the reduction of a Pt ion salt in ethylene glycol solution. For comparison, a Pt/XC-72 nanocomposite was also prepared by the EG method. The Pt/MWNT catalyst prepared by the EG method has a high and homogeneous dispersion of spherical Pt metal particles with a narrow particle-size distribution. TEM images show that the Pt particle size is in the range of 2-5 nm with a peak at 2.6 nm, which is consistent with 2.5 nm obtained from the XRD broadening calculation. Surface chemical modifications of MWNTs and water content in EG solvent are found to be the key factors in depositing Pt particles on MWNTs. In the case of the direct methanol fuel cell (DMFC) test, the Pt/MWNT catalyst prepared by EG reduction is slightly superior to the catalyst prepared by aqueous reduction and displays significantly higher performance than the Pt/XC-72 catalyst. These differences in catalytic performance between the MWNT-supported or the carbon black XC-72-supported catalysts are attributed to a greater dispersion of the supported Pt particles when the EG method is used, in contrast to aqueous HCHO reduction and to possible unique structural and higher electrical properties when contrasting MWNTs to carbon black XC-72 as a support.read more
Citations
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Journal ArticleDOI
Novel Pt nanoclusters/titanium dioxide nanotubes composites for hydrazine oxidation
TL;DR: In this paper, the nano-Pt/TiO 2 -NTs composites for hydrazine oxidation were investigated on the corresponding modified glassy carbon electrode by cyclic voltammetry (CV).
Journal ArticleDOI
Ionic Liquid-Assisted Synthesis of Pt Nanoparticles onto Exfoliated Graphite Nanoplatelets for Fuel Cells
Inhwan Do,Lawrence T. Drzal +1 more
TL;DR: The interaction of Pt particles-GnP is stronger than that of a commercial Pt-CB, and the Pt/gnP catalysts prepared by this method have excellent electrocatalytic activity and stability for methanol oxidation.
Journal ArticleDOI
Preparation of nitrogen self-doped hierarchical porous carbon with rapid-freezing support for cooperative pollutant adsorption and catalytic oxidation of persulfate.
TL;DR: The catalyst (CA-900Q 1-1) obtained after rapid-freezing and KOH activation treatment show excellent persulfate activation ability and has excellent electrical conductivity, which enables pollutants adsorbed on the catalyst surface to transfer electrons to the Persulfate through the N-doped sp2-hybrid carbon network faster.
Journal ArticleDOI
Ultrafine Pt–Ru bimetallic nanoparticles anchored on reduced graphene oxide sheets as highly active electrocatalysts for methanol oxidation
G. Vishwakshan Reddy,Prakash S. Raghavendra,Balaprasad Ankamwar,P. Sri Chandana,Sandeep Kumar,L. Subramanyam Sarma +5 more
TL;DR: In this paper, a facile approach for depositing platinum-ruthenium (Pt-Ru) bimetallic nanoparticles on a reduced graphene oxide (RGO) support has been demonstrated.
Journal ArticleDOI
Highly Durable Platinum based Cathode Electrocatalysts for PEMFC Application using Oxygen and Nitrogen Functional Groups Attached Nanocarbon Supports
TL;DR: In this paper, the combined effect of oxygen and nitrogen functional groups on highly crystalline carbon supports like multiwalled carbon nanotubes (MWCNT) and MWCNT-few layer graphene hybrid structures was investigated towards oxygen reduction reaction (ORR) performance and carbon corrosion durability in PEMFC applications.
References
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