Immobilization of platinum nanoparticles on 3,4-diaminobenzoyl-functionalized multi-walled carbon nanotube and its electrocatalytic activity
Source abstract
Abstract
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-diaminobenzoyl-functionalized 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 DAB-MWCNT in solution state are qualitatively shown to be sensitive to the pH in the environment. The DAB-MWCNT is used as a stable platform on which to deposit platinum nanoparticles (PNP). The PNP/DAB-MWCNT hybrid displays high electrocatalytic activity with good electrochemical stability for an oxygen reduction reaction under an alkaline condition. Multi-walled carbon nanotubes (MWCNTs) were functionalized with 3,4-diaminobenzoic acid to produce 3,4-diaminobenzoyl-functionalized MWCNT (DAB-MWCNT). Platinum nanoparticles (PNP) were deposited to DAB-MWCNT. The resulting PNP/DAB-MWCNT hybrid displayed high electrocatalytic activity.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Conducting polymers and applications · Electrochemical Analysis and Applications · Electrochemical sensors and biosensors
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