Hybrid Materials, Semiconductors and Carbon Photocatalysis

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

Deadline for manuscript submissions: 31 August 2025 | Viewed by 221

Special Issue Editors


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Guest Editor
Unidad de Cambio Climático y Medio Ambiente (UCCMA), Instituto Iberoamericano de Desarrollo Sostenible (IIDS), Facultad de Arquitectura, Construcción y Medio Ambiente, Universidad Autónoma de Chile, Temuco 4780000, Chile
Interests: photocatalysis; carbon materials; hybrid materials; solar irradiation; solar/chemical fuels
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Unidad de Cambio Climático y Medio Ambiente (UCCMA), Instituto Iberoamericano de Desarrollo Sostenible (IIDS), Facultad de Arquitectura, Construcción y Medio Ambiente, Universidad Autónoma de Chile, Temuco 4780000, Chile
Interests: photocatalysis; bismuth-based semiconductors; environmental remediation

Special Issue Information

Dear Colleagues,

Despite the significant advances in developing sustainable solar fuels and chemicals, their efficiency is still low and they remain far from practical application. The development of these new processes will also require highly efficient methods to remediate the pollutants and sub-products formed in reactions. In this sense, heterogenous photocatalysts, including new types of semiconductors, hybrid photocatalysts and carbon-based photocatalysts, are of great interest. The purpose of this Special Issue, entitled “Hybrid Materials, Semiconductors and Carbon Photocatalysis”, is to cover significant recent advances in solar fuels, chemical production and environment remediation, mainly referred to as solar-driven chemical reactions, using efficient semiconductors, and hybrid and carbon-based photocatalysts. Works related to eco-friendly synthesis routes for innovative photocatalysts, as well as hybrid and carbon-based materials, used to produce energy vectors such as H2, NH3, or other fuels; CO2 reduction; photo-assisted valorization of organic molecules; and the environmental remediation of polluted water and air are welcome for this Special Issue.

Prof. Dr. Juan Matos Lale
Dr. Adriana Consuelo Mera Benavides
Guest Editors

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Keywords

  • semiconductors
  • carbon-based photocatalysts
  • perovskites
  • bismuth-based photocatalysts
  • hybrid materials
  • solar fuels
  • environmental remediation
  • heterogeneous photocatalysis
  • eco-friendly synthesis

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Published Papers (1 paper)

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Research

22 pages, 3114 KiB  
Article
Nickel-Decorated Carbocatalysts for the UV-Driven Photodegradation of Rhodamine B
by Juan Matos, Rory A. Smith, Ruby Bello, Po S. Poon, Rodrigo Segura-del-Río, Néstor Escalona and Svetlana Bashkova
Catalysts 2025, 15(4), 385; https://doi.org/10.3390/catal15040385 - 16 Apr 2025
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Abstract
Nickel-decorated carbocatalysts were synthesized by the evaporation-induced self-assembly (EISA) method. The influence of the metal content and pyrolysis temperature upon the photoactivity was assessed through rhodamine B degradation under UV irradiation. The characterization revealed a mesoporous framework with a granular morphology composed of [...] Read more.
Nickel-decorated carbocatalysts were synthesized by the evaporation-induced self-assembly (EISA) method. The influence of the metal content and pyrolysis temperature upon the photoactivity was assessed through rhodamine B degradation under UV irradiation. The characterization revealed a mesoporous framework with a granular morphology composed of amorphous carbon, where the pyrolysis temperature influenced the metal dispersion on the carbon surface. The primary metallic phases consisted of elemental nickel crystallites and nickel carbide phases. The kinetic parameters for adsorption and dye photodegradation under UV irradiation were determined and compared to TiO2-P25. Correlations were found between the adsorption parameters, photocatalytic activity, and nickel content, the pyrolysis method (one-step vs. two-step pyrolysis), and the pyrolysis temperature. The sample with a 1:1:0.25 tannin/Pluronic®F-127/Ni weight ratio pyrolyzed at 700 °C exhibited the highest photoactivity, achieving rhodamine B degradation rates up to 68 and 2.5 times greater than photolysis and TiO2-P25. In terms of the normalized weight of the catalysts, it can be concluded that the present Ni-based catalysts are up to two orders of magnitude more photoactive than TiO2-P25 under UV irradiation, opening a door for indoor UV-driven photoreactors. These findings demonstrate that the EISA method is an effective, low-cost, and ecofriendly approach for synthesizing Ni-decorated carbocatalysts. Full article
(This article belongs to the Special Issue Hybrid Materials, Semiconductors and Carbon Photocatalysis)
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