Advanced Materials for Photocatalytic Hydrogen Production

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Photocatalysis".

Deadline for manuscript submissions: closed (28 February 2022) | Viewed by 6242

Special Issue Editors


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Faculty of Process & Environmental Engineering, Lodz University of Technology, Wolczanska 213, 90-924 Lodz, Poland
Interests: water and wastewater treatment; advanced oxidation processes; application of advanced oxidation processes for the purification of real textile wastewater; the reuse of treated textile wastewater; antibiotic resistance; nanomaterials
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Department of Environmental Technology, Faculty of Chemistry, University of Gdansk, 80-308 Gdansk, Poland
Interests: heterogeneous photocatalysis; environmental remediation technologies; nanotechnology; nanomaterials; nanobiomedicine; environmental protection; synthesis of quantum dots; metallic and semiconductors nanoparticles; hydrogen production
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Hydrogen is considered a clean energy vector, although nowadays, most hydrogen is still produced from fossil fuels. The production of clean hydrogen fuel from water using sunlight is one of the promising solutions to address the increasing demand for energy and the associated environmental concerns. The powder-type photocatalytic system is a particularly attractive candidate for the development of a practical large-scale and cost-effective system to utilize sunlight as a renewable energy source.

This Special Issue aims to report on developments in the synthesis, characterization, and application of advanced nano- and micro-materials for photocatalytic hydrogen production under UV and/or visible light. Furthermore, research into understanding the mechanism of water splitting are important subjects. In this Special Issue, we are inviting scientists to share their findings related to efforts for hydrogen photo-generation using advanced materials, such as perovskites, nano–bio hybrids, metalorganic frameworks, semiconductor composites, polymer-based hybrids, carbon-based catalysts, and metal and non-metal oxides.

Prof. Dr. Marta Gmurek
Dr. Anna Malankowska
Guest Editors

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Keywords

  • photocatalysts
  • hydrogen production
  • photocatalysis
  • nanomaterials
  • water splitting
  • UV light
  • visible light

Published Papers (2 papers)

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Research

28 pages, 2956 KiB  
Article
Photocatalytic Activity of n-Alkylamine and n-Alkoxy Derivatives of Layered Perovskite-like Titanates H2Ln2Ti3O10 (Ln = La, Nd) in the Reaction of Hydrogen Production from an Aqueous Solution of Methanol
by Sergei A. Kurnosenko, Vladimir V. Voytovich, Oleg I. Silyukov, Ivan A. Rodionov, Sergei O. Kirichenko, Iana A. Minich, Ekaterina N. Malygina, Alina D. Khramova and Irina A. Zvereva
Catalysts 2021, 11(11), 1279; https://doi.org/10.3390/catal11111279 - 23 Oct 2021
Cited by 13 | Viewed by 1949
Abstract
Two series of hybrid inorganic-organic derivatives, obtained via the modification of protonated Ruddlesden–Popper phases H2Ln2Ti3O10 (Ln = La, Nd) with intercalated n-alkylamines and grafted n-alkoxy groups, have been systematically investigated in relation to photocatalytic [...] Read more.
Two series of hybrid inorganic-organic derivatives, obtained via the modification of protonated Ruddlesden–Popper phases H2Ln2Ti3O10 (Ln = La, Nd) with intercalated n-alkylamines and grafted n-alkoxy groups, have been systematically investigated in relation to photocatalytic hydrogen production from a model of 1 mol % aqueous solution of methanol for the first time. Photocatalytic measurements were performed both for bare samples and for their composites with Pt nanoparticles as a cocatalyst using an advanced scheme, including dark stages, monitoring of the volume concentration of the sample in the reaction suspension during the experiment, shifts of its pH and possible exfoliation of layered compounds into nanolayers. It was found that the incorporation of organic components into the interlayer space of the titanates increases their photocatalytic activity up to 117 times compared with that of the initial compounds. Additional platinization of the hybrid samples’ surface allowed for achieving apparent quantum efficiency of hydrogen evolution of more than 40%. It was established that the photocatalytic activity of the hybrid samples correlates with the hydration degree of their interlayer space, which is considered a separate reaction zone in photocatalysis, and that hydrogen indeed generates from the aqueous methanol solution rather than from organic components of the derivatives. Full article
(This article belongs to the Special Issue Advanced Materials for Photocatalytic Hydrogen Production)
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11 pages, 3139 KiB  
Article
Photocatalytic Properties of Amorphous N-Doped TiO2 Photocatalyst under Visible Light Irradiation
by Kyong-Hwan Chung, Byung-Joo Kim, Young-Kwon Park, Sang-Chai Kim and Sang-Chul Jung
Catalysts 2021, 11(8), 1010; https://doi.org/10.3390/catal11081010 - 21 Aug 2021
Cited by 22 | Viewed by 3225
Abstract
Amorphous TiO2 doped with N was characterized by its photocatalytic activity under visible light irradiation. The amorphous N-doped TiO2 was prepared by the sol-gel method through heat treatment at a low temperature. The photocatalyst showing activity in visible light despite heat [...] Read more.
Amorphous TiO2 doped with N was characterized by its photocatalytic activity under visible light irradiation. The amorphous N-doped TiO2 was prepared by the sol-gel method through heat treatment at a low temperature. The photocatalyst showing activity in visible light despite heat treatment at low temperature can be applied to plastics and has excellent utility. The N-doped TiO2 appeared amorphous when heat-treated at 130 °C. It was converted into an anatase-type N-doped TiO2 when this was calcined at 500 °C. The photocatalyst showed photocatalytic activities in the photocatalytic decomposition of formaldehyde and methylene blue under visible light irradiation. The photocatalyst exhibited a higher rate of hydrogen production than that of TiO2 in photocatalytic decomposition of water under liquid-phase plasma irradiation. The bandgap of the amorphous N-doped TiO2 measured by investigation of optical properties was 2.4 eV. The lower bandgap induced the photocatalytic activities under visible light irradiation. Full article
(This article belongs to the Special Issue Advanced Materials for Photocatalytic Hydrogen Production)
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