Electronic structure control of IrO2 via conjugated polymer support for highly efficient oxygen evolution reaction

Autor: Yusaku Asai, Koichi Higashimine, Shun Nishimura, Rajashekar Badam, Noriyoshi Matsumi
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Materials Research Express, Vol 11, Iss 3, p 035503 (2024)
Druh dokumentu: article
ISSN: 2053-1591
DOI: 10.1088/2053-1591/ad30ab
Popis: In this paper, we report synthesis of novel nanoparticle catalyst of iridium oxide supported on conjugated polymer along with evaluation of activity and durability for oxygen evolution reaction. The IrO _2 /poly(BIAN-thiophene)/TNT catalyst was prepared from iridium complex and poly(BIAN-thiophene)/TNT by hydrothermal method. The synthesized IrO _2 /poly(BIAN-thiophene)/TNT catalysts was characterized by scanning electron microscopy, transmission electron microscopy, Fourier transfer-infrared spectroscopy, x-ray photoelectron spectroscopy and electrochemical methods. The average particle size of the IrO _2 particles on poly(BIAN-thiophene)/TNT was 2.5 nm. The XPS measurement revealed that Ir complex was completely converted to iridium oxide through hydrothermal treatment. The IrO _2 /poly(BIAN-thiophene)/TNT catalyst showed sufficient performance for OER activity and durability in acidic condition. Our results indicate that IrO _2 /poly(BIAN-thiophene)/TNT is one of the prospective candidate catalysts for water splitting.
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