Recent Advancements in Mesoporous Nanomaterials: Synthesis, Characterization and Catalytic Applications (2nd Edition)

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Synthesis, Interfaces and Nanostructures".

Deadline for manuscript submissions: 31 July 2025 | Viewed by 2411

Special Issue Editor


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Guest Editor
Department Chemistry of Surface and Catalysis, “Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 060021 Bucharest, Romania
Interests: catalysts and catalytic processes; synthesis of nanomaterials and mesoporous oxide, composite and hybrid materials; immobilization on support of transitional metals, enzymes and organometallic complexes; characterization of materials (scanning electron microscopy-SEM, UV-Vis spectroscopy, IR coupled adsorption-desorption, gas permeation); catalytic oxidation in gas and liquid phase; photocatalysis; phase transfer catalysis; catalysis on membranes
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Special Issue Information

Dear Colleagues,

Recent advancements in nanomaterials synthesis are outstanding as they allow size, morphology, and structure to be controlled more effectively. Due to these properties, nanomaterials have led to many interesting applications in catalysis because of their special physical and chemical properties when compared to bulk materials. The introduction of mesopores with well-defined structures to improve mass transfer efficiency widened the range of applications in terms of nanocatalysis. Thus, a wide variety of new nanomaterials (semiconductors, oxides, carbon, and other compounds) with large pore sizes, high surface areas, and tunable architectures of mesopores have been obtained as supports or active materials in catalysis. Additionally, significant attention has been paid to the development of mesoporous nanocatalysts using greener chemistry (environmentally friendly materials) as surfactants and precursors.

This Special Issue will focus on recent advancements in the following mesoporous nanomaterials: synthesis, characterization, and catalytic applications. A special emphasis will be given to new mesoporous nanomaterials, such as modified oxide supports, metal-incorporated oxide supports, transition metals oxides, composites, and hybrid materials. A variety of novel synthetic strategies, advanced characterization techniques, and new catalytically active species that may modify and justify the activity and selectivity of mesoporous oxides in catalytic reactions of interest performed in either the gas or liquid phase can be directions of interest. The addition of some synergistic components on mesoporous supports (mixed oxides, composite, or hybrid materials) is desirable to accurately tune the interactions with the local environment, leading to improved catalytic performance. The interaction between active sites and support with their electronic structure modulation, as well as a significant promoting effect on the activity and selectivity can be another topic of interest that can be approached, along with others, by researchers interested in the synthesis, characterization, and use of mesoporous nanoparticles as catalysts.

Dr. Viorica Pârvulescu
Guest Editor

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Keywords

  • mesoporous nanomaterials
  • nanomaterials synthesis
  • mesoporous catalysts
  • modified supports
  • composite catalysts
  • mixed nano-oxides
  • nanocatalysts
  • supported metals
  • metal–support interaction
  • hybrid catalysts

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Published Papers (2 papers)

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Research

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24 pages, 9532 KiB  
Article
Bimetallic Mesoporous MCM-41 Nanoparticles with Ta/(Ti, V, Co, Nb) with Catalytic and Photocatalytic Properties
by Viorica Parvulescu, Gabriela Petcu, Nicoleta G. Apostol, Irina Atkinson, Simona Petrescu, Adriana Baran, Daniela C. Culita, Ramona Ene, Bogdan Trica and Elena M. Anghel
Nanomaterials 2024, 14(24), 2025; https://doi.org/10.3390/nano14242025 - 16 Dec 2024
Viewed by 1071
Abstract
Bimetallic (Ta/Ti, V, Co, Nb) mesoporous MCM-41 nanoparticles were obtained by direct synthesis and hydrothermal treatment. The obtained mesoporous materials were characterized by XRD, XRF, N2 adsorption/desorption, SEM, TEM, XPS, Raman, UV-Vis, and PL spectroscopy. A more significant effect was observed on [...] Read more.
Bimetallic (Ta/Ti, V, Co, Nb) mesoporous MCM-41 nanoparticles were obtained by direct synthesis and hydrothermal treatment. The obtained mesoporous materials were characterized by XRD, XRF, N2 adsorption/desorption, SEM, TEM, XPS, Raman, UV-Vis, and PL spectroscopy. A more significant effect was observed on the mesoporous structure, typically for MCM-41, and on optic properties if the second metal (Ti, Co) did not belong to the same Vb group with Ta as V and Nb. The XPS showed for the TaTi-MCM-41 sample that framework titanium is the major component. The new nanoparticles obtained were used as catalysts for oxidation with hydrogen peroxide of olefinic compounds (1,4 cyclohexadiene, cyclohexene, styrene) and photodegradation of organic pollutants (phenol, methyl orange) from water. The results showed improvementsin activity and selectivity in oxidation reactions by the addition of the second metal to the Ta-MCM-41 catalyst. The slow addition of H2O2 was also beneficial for the selectivity of epoxide products and the stability of the catalysts. The band gap energy values decreased in the presence of the second metal, and the band edge diagram evidenced positive potential for all the conduction bands of the bimetallic samples. The highestlevels of photocatalytic degradation were obtained for the samples with TaTi and TaV. Full article
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Review

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25 pages, 6681 KiB  
Review
Gamma Radiation in the Synthesis of Inorganic Silica-Based Nanomaterials: A Review
by Andreea Simona Baltac and Raul-Augustin Mitran
Nanomaterials 2025, 15(3), 218; https://doi.org/10.3390/nano15030218 - 29 Jan 2025
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Abstract
Gamma radiation offers a versatile approach for the synthesis of silica-based nanomaterials, leveraging high-energy radiolysis to produce pure and finely structured composites without the need for surfactants or capping agents. This review explores the underlying mechanisms of γ-ray-induced radiolytic reduction, detailing the interaction [...] Read more.
Gamma radiation offers a versatile approach for the synthesis of silica-based nanomaterials, leveraging high-energy radiolysis to produce pure and finely structured composites without the need for surfactants or capping agents. This review explores the underlying mechanisms of γ-ray-induced radiolytic reduction, detailing the interaction of radiolytic species with silica matrices to synthesize metallic and hybrid nanomaterials. Emphasis is placed on the synthesis of silver and noble metal composites, which demonstrate promising properties for catalytic, antimicrobial, and sensing applications. The influence of synthesis parameters, such as dose, pH, and matrix characteristics, on nanoparticle size and yield is discussed. Emerging applications of these materials in biomedical devices and environmental technologies are presented. While γ-ray synthesis circumvents issues of contamination and scalability inherent in chemical methods, challenges such as accessibility to radiation sources and control over nanoparticle morphology remain. Future research directions are proposed, including the extension of this technique to multimetallic systems, sulfide-based nanocomposites, and hybrid materials. Full article
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