Synergistic Effect of Redox Dual PdO x /MnO x Cocatalysts on the Enhanced H 2 Production Potential of a SnS/α-Fe 2 O 3 Heterojunction via Ethanol Photoreforming.

Autor: Etemadi H; School of Natural Sciences, Massey University, Private Bag 11 222, Palmerston North4410, New Zealand., Soltani T; Graduate School of Human and Environmental Studies, Kyoto University, Kyoto606-8501, Japan., Yoshida H; Graduate School of Human and Environmental Studies, Kyoto University, Kyoto606-8501, Japan.; Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Kyoto615-8520, Japan., Zhang Y; MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Natural Sciences, Massey University, Private Bag 11 222, Palmerston North4410, New Zealand., Telfer SG; MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Natural Sciences, Massey University, Private Bag 11 222, Palmerston North4410, New Zealand., Buchanan JK; School of Natural Sciences, Massey University, Private Bag 11 222, Palmerston North4410, New Zealand., Plieger PG; School of Natural Sciences, Massey University, Private Bag 11 222, Palmerston North4410, New Zealand.
Jazyk: angličtina
Zdroj: ACS omega [ACS Omega] 2022 Nov 10; Vol. 7 (46), pp. 42347-42358. Date of Electronic Publication: 2022 Nov 10 (Print Publication: 2022).
DOI: 10.1021/acsomega.2c05410
Abstrakt: In the quest for optimal H 2 evolution (HE) through ethanol photoreforming, a dual cocatalyst-modified heterocatalyst strategy is utilized. Tin(II) sulfide (SnS) was hybridized with α-Fe 2 O 3 to form the heterocatalyst FeOSnS with a p-n heterojunction structure as confirmed by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), UV-vis diffusive reflectance spectroscopy (UV-vis DRS), and Brunauer-Emmett-Teller (BET) techniques. PdO x and PdO x /MnO x cocatalysts were loaded onto the FeOSnS heterocatalyst through the impregnation method, as verified by high-resolution transform electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), and elemental mapping. Photocatalytic ethanol photoreforming resulted in the production of H 2 as the main product with a selectivity of 99% and some trace amounts of CH 4 . The FeOSnS2-PdO x 2%/MnO x 1% photocatalyst achieved the highest HE rate of 1654 μmol/g, attributed to the synergistic redox contribution of the PdO x and MnO x species.
Competing Interests: The authors declare no competing financial interest.
(© 2022 The Authors. Published by American Chemical Society.)
Databáze: MEDLINE
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