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Methane
Volume 2
Issue 1
10.3390/methane2010003
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Article

Photocatalytic Methane Conversion over Pd/ZnO Photocatalysts under Mild Conditions

by
Arthur Pignataro Machado
,
Saulo Amaral Carminati
,
Eliane Ribeiro Januário
,
Patricia Silvaino Ferreira
,
Jorge Moreira Vaz
* and
Estevam Vitorio Spinacé
*
Instituto de Pesquisas Energéticas e Nucleares, IPEN/CNEN, Av. Prof. Lineu Prestes, 2242-Cidade Universitária, São Paulo 05508-000, SP, Brazil
*
Authors to whom correspondence should be addressed.
Methane 2023, 2(1), 44-55; https://doi.org/10.3390/methane2010003
Submission received: 3 November 2022 / Revised: 5 December 2022 / Accepted: 1 January 2023 / Published: 7 January 2023
(This article belongs to the Special Issue Methane Conversion Technology)
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Abstract

Here, Pd nanoparticles supported on ZnO were prepared by the alcohol-reduction and the borohydride-reduction methods, and their efficiency towards the photocatalytic conversion of methane under mild conditions were evaluated. The resulting Pd/ZnO photocatalysts were characterized by X-ray fluorescence, X-ray diffraction, X-ray photoelectron spectroscopy, UV–Vis, and transmission electron microscopy. The reactions were performed with the photocatalysts dispersed in water in a bubbling stream of methane under UV-light illumination. The products formed were identified and quantified by gas chromatography (GC-FID/TCD/MSD). The principal products formed were C2H6 and CO2 with minor quantities of C2H4 and CO. No H2 production was observed. The preparation methods influenced the size and dispersion of Pd nanoparticles on the ZnO, affecting the performance of the photocatalysts. The best performance was observed for the photocatalyst prepared by borohydride reduction with 0.5 wt% of Pd, reaching a C2H6 production rate of 686 µmol·h−1·g−1 and a C2H6 selectivity of 46%.
Keywords: methane conversion; zinc oxide; palladium nanoparticles; photocatalysis methane conversion; zinc oxide; palladium nanoparticles; photocatalysis

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MDPI and ACS Style

Pignataro Machado, A.; Amaral Carminati, S.; Ribeiro Januário, E.; Silvaino Ferreira, P.; Moreira Vaz, J.; Spinacé, E.V. Photocatalytic Methane Conversion over Pd/ZnO Photocatalysts under Mild Conditions. Methane 2023, 2, 44-55. https://doi.org/10.3390/methane2010003

AMA Style

Pignataro Machado A, Amaral Carminati S, Ribeiro Januário E, Silvaino Ferreira P, Moreira Vaz J, Spinacé EV. Photocatalytic Methane Conversion over Pd/ZnO Photocatalysts under Mild Conditions. Methane. 2023; 2(1):44-55. https://doi.org/10.3390/methane2010003

Chicago/Turabian Style

Pignataro Machado, Arthur, Saulo Amaral Carminati, Eliane Ribeiro Januário, Patricia Silvaino Ferreira, Jorge Moreira Vaz, and Estevam Vitorio Spinacé. 2023. "Photocatalytic Methane Conversion over Pd/ZnO Photocatalysts under Mild Conditions" Methane 2, no. 1: 44-55. https://doi.org/10.3390/methane2010003

APA Style

Pignataro Machado, A., Amaral Carminati, S., Ribeiro Januário, E., Silvaino Ferreira, P., Moreira Vaz, J., & Spinacé, E. V. (2023). Photocatalytic Methane Conversion over Pd/ZnO Photocatalysts under Mild Conditions. Methane, 2(1), 44-55. https://doi.org/10.3390/methane2010003

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