Photoelectrochemical Performance of a CuBi 2 O 4 Photocathode with H 2 O 2 as a Scavenger.

Autor:	Masoumi, Zohreh, Tayebi, Mahdi, Lari, S. Ahmad Masoumi, Seo, Bongkuk, Lim, Choong-Sun, Kim, Hyeon-Gook, Kyung, Daeseung, Tayebi, Meysam
Předmět:	PHOTOCATHODES METAL oxide semiconductors HYDROGEN as fuel RAMAN spectroscopy CHARGE transfer X-ray diffraction
Zdroj:	Inorganics; Apr2023, Vol. 11 Issue 4, p147, 11p
Abstrakt:	Photoelectrochemical (PEC) water splitting is an eco-friendly method for producing clean and sustainable hydrogen fuels. Compared with the fabrication of solar hydrogen using n-type metal oxide semiconductor photoanodes, that of solar hydrogen using p-type metal oxide semiconductor photocathodes has not been researched as thoroughly. Therefore, this study investigated the effect of drop casting time on the PEC performance of a prepared CuBi2O4 photocathode. XPS, HRTEM, UV-DRS, Raman spectroscopy, XRD, and SEM analyses were used to characterize the prepared CuBi2O4 photocathode. Owing to the high charge separation and transfer, the photocurrent density of the CuBi2O4 photocathode was ~0.6 mA cm−2 at 0.3 V vs. RHE. The nanoporous CuBi2O4 photocathode exhibited a high photocurrent density of up to 1.2 mA cm−2 at 0.3 V vs. RHE with H2O2 as a sacrificial agent. Mott–Schottky and impedance measurements were also performed on the CuBi2O4 photocathode to estimate its acceptor density and charge-transfer resistance. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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