Immobilization of Platinum Nanoparticles on 3,4-diaminobenzoyl-Functionalized Multi-Walled Carbon Nanotube and its Electrocatalytic Activity
ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY (KOREA SOUTH)
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Multi-walled carbon nanotubes MWCNTs are functionalized at the sp2 C-H defect sites with 3,4-diaminobenzoic acid by a direct Friedel-Crafts acylation reaction in a mild polyphosphoric acid phosphorous pentoxide medium. Owing to enhanced surface polarity, the resulting 3,4-diaminobenzoylfunctionalized MWCNTs DAB-MWCNT are highly dispersible in polar solvents, such as ethanol N-methyl-2-pyrrolidone, and methanesulfonic acid. The absorption and emission properties of DABMWCNT in solution state are qualitatively shown to be sensitive to the pH in the environment. The DABMWCNT is used as a stable platform on which to deposit platinum nanoparticles PNP. The PNPDABMWCNT hybrid displays high electrocatalytic activity with good electrochemical stability for an oxygen reduction reaction under an alkaline condition.
- Refractory Fibers
- Miscellaneous Materials