Photocatalytic Production of H2O2 over Rutile TiO2 Supported with Pd Nanoparticles Full article
| Journal |
Applied Surface Science
ISSN: 0169-4332 |
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| Output data | Year: 2025, Volume: 686, Article number : 162124, Pages count : 10 DOI: 10.1016/j.apsusc.2024.162124 | ||
| Tags | Photocatalysis; Energy conversion; Rutile TiO2; Surface modification; Hydrogen peroxide (H2O2); Oxygen reduction reaction (ORR) | ||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Ministry of Science and Higher Education of the Russian Federation | FWUR-2024-0036 |
| 2 | Russian Science Foundation | 24-43-00182 |
Abstract:
Hydrogen peroxide is a valuable chemical, which is commonly employed in environmental application for advanced oxidation processes and in energy application for fuel cells. Local production of H2O2 directly at sites of its consumption can eliminate risks and costs associated with transportation of concentrated H2O2 solutions. In this study, we investigated the ability of rutile or anatase TiO2 modified with Pd nanoparticles to produce hydrogen peroxide via photocatalytic oxygen reduction. Surface modification of TiO2 with Pd cocatalyst allowed H2O2 generation in both deionized water and water-methanol solution under UV-LED irradiation. Rutile TiO2 supported with Pd nanoparticles exhibited boosted photocatalytic activity in H2O2 formation compared to anatase-based photocatalyst. H2O2 was shown to predominantly form through the pathway of oxygen reduction, and observed difference in activity was attributed to different positions of energy bands in rutile and anatase phases. Methanol as an efficient electron donor substantially increased the amount of evolved H2O2. Rate constants of H2O2 generation over Pd-decorated rutile TiO2 were 1.7 μmol min−1 in deionized water and 7.4 μmol min−1 in water-methanol solution (10 vol%). This study reveals the potential of rutile for design of efficient heterostructured composites with other narrow-band semiconductors for photocatalytic generation of H2O2 under solar light.
Cite:
Fazliev T.
, Polskikh D.
, Selishchev D.
Photocatalytic Production of H2O2 over Rutile TiO2 Supported with Pd Nanoparticles
Applied Surface Science. 2025. V.686. 162124 :1-10. DOI: 10.1016/j.apsusc.2024.162124 WOS Scopus OpenAlex
Photocatalytic Production of H2O2 over Rutile TiO2 Supported with Pd Nanoparticles
Applied Surface Science. 2025. V.686. 162124 :1-10. DOI: 10.1016/j.apsusc.2024.162124 WOS Scopus OpenAlex
Dates:
| Submitted: | Oct 10, 2024 |
| Accepted: | Dec 16, 2024 |
| Published online: | Dec 17, 2024 |
| Published print: | Mar 30, 2025 |
Identifiers:
| Web of science: | WOS:001393922100001 |
| Scopus: | 2-s2.0-85212406294 |
| OpenAlex: | W4405463847 |