Enhanced electrocatalytic oxidation of methanol on Au-Pt bimetallic particles modified copper phthalocyanine-carbon nanotube composite electrode
Küçük Resim Yok
Tarih
2022
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this work, we prepared modified copper phthalocyanine-carbon nanotube (CuPc-CNT) catalysts containing bimetallic (Au-Pt, Au/Pt, Pt/Au) and monometallic nanoparticles (Au or Pt), using a simple electrochemical technique. We investigated the catalyst structural and physical properties by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, thermogravimetric analysis, and electrochemical impedance spectroscopy. The bimetallic systems (Au-Pt/CuPc-CNT > Pt/Au/CuPc-CNT > Au/Pt/CuPc-CNT) proved to have a better current density towards methanol oxidation than that of mono-metallic systems (Pt/CuPc-CNT > Au/CuPc-CNT) in alkaline media. The electrochemical surface area (ECSA) of Au-Pt/CuPc-CNT was found to be 60.25 m(2) g(-1). The methanol oxidation reaction took place with the electron transfer, followed by the catalytic chemical reaction. Thus, the electrochemically-prepared Au-Pt/CuPc-CNT catalyst of the highest stability and enhanced electrocatalytic activity towards methanol oxidation represents a promising candidate for use in alkaline direct methanol fuel cells.
Açıklama
Anahtar Kelimeler
Methanol oxidation, Gold-platinum nanoparticles, Composite electrode, Copper phthalocyanine, Carbon nanotube, Graphene Oxide, Platinum Nanoparticles, Gold Nanoparticles, Efficient Electrocatalyst, Anode Catalyst, Nanocomposite, Electrooxidation, Performance, Hydrazine, Reduction
Kaynak
Materials Science And Engineering B-Advanced Functional Solid-State Materials
WoS Q Değeri
Q2
Scopus Q Değeri
N/A
Cilt
275
