DataVXACS Applied Materials & InterfacesPaper
journal article·2024-03-06Open access

Triple Play of Band Gap, Interband, and Plasmonic Excitations for Enhanced Catalytic Activity in Pd/HxMoO3 Nanoparticles in the Visible Region

Leticia S. Bezerra, Samir A. Belhout, Shiqi Wang, Jhon Quiroz, Paulo F.M. de Oliveira, Shwetha Shetty, Guilherme Rocha, Hugo L. S. Santos, Sana Frindy, Freddy E. Oropeza, Víctor A. de la Peña O’Shea, Antti-Jussi Kallio, Simo Huotari, Wenyi Huo, Pedro H.C. Camargo

ACS Applied Materials & Interfaces· Volume 16· Issue 9
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Source abstract

Abstract

Plasmonic photocatalysis has been limited by the high cost and scalability of plasmonic materials, such as Ag and Au. By focusing on earth-abundant photocatalyst/plasmonic materials (H x MoO 3 ) and Pd as a catalyst, we addressed these challenges by developing a solventless mechanochemical synthesis of Pd/H x MoO 3 and optimizing photocatalytic activities in the visible range. We investigated the effect of H x MoO 3 band gap excitation (at 427 nm), Pd interband transitions (at 427 nm), and H x MoO 3 localized surface plasmon resonance (LSPR) excitation (at 640 nm) over photocatalytic activities toward the hydrogen evolution and phenylacetylene hydrogenation as model reactions. Although both excitation wavelengths led to comparable photoenhancements, a 110% increase was achieved under dual excitation conditions (427 + 640 nm). This was assigned to a synergistic effect of optical excitations that optimized the generation of energetic electrons at the catalytic sites. These results are important for the development of visible-light photocatalysts based on earth-abundant components.
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Research context

NanomaterialsCatalysis & surfaces

OpenAlex topics: Advanced Photocatalysis Techniques · Gold and Silver Nanoparticles Synthesis and Applications · Nanoplatforms for cancer theranostics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, PO Box 55, Helsinki 00014, Finland

Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo. Av. Lineu Prestes 748, São Paulo 05508000, Brazil

Photoactivated Processes Unit, IMDEA Energy Institute, Avda. Ramón de la Sagra 3, Mostoles, Madrid 28935, Spain

Department of Physics, University of Helsinki, P.O. Box 64, Helsinki 00014, Finland

College of Mechanical and Electrical Engineering, Nanjing Forestry University, Nanjing 210037, P. R. China

NOMATEN Centre of Excellence, National Centre for Nuclear Research. Otwock 05-400, Poland

Funding

Comunidad de Madrid · European Commission · Agencia Estatal de Investigaci?n · Fundaci?n Ram?n Areces · Ministerio de Ciencia e Innovaci?n · European Regional Development Fund · Funda??o de Amparo ? Pesquisa do Estado de S?o Paulo · Research Council of Finland · Jane ja Aatos Erkon S??ti? · Horizon 2020 Framework Programme

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