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Molecules
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Fabrication of Advanced Materials for Catalysis
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Fabrication of Advanced Materials for Catalysis

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Applied Chemistry".

Deadline for manuscript submissions: closed (31 July 2023) | Viewed by 6942

Special Issue Editors

Dr. Surjyakanta Rana

E-Mail Website
Guest Editor
Department of Functional Materials, FunGlass – Centre for Functional and Surface Functionalized Glass, Alexander Dubček University of Trenčín, 911 50 Trenčín, Slovakia
Interests: heterogeneous catalysis; green chemistry; plasma catalysis; organic transformation reaction; water splitting; photocatalysis
Special Issues, Collections and Topics in MDPI journals
Dr. Orhan Şişman

E-Mail Website
Guest Editor
Department of Functional Materials, FunGlass – Centre for Functional and Surface Functionalized Glass, Alexander Dubček University of Trenčín, 911 50 Trenčín, Slovakia
Interests: nanomaterials; semiconductors; surface chemistry; chemical sensors; gas separation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Different types of composite materials/nanocomposite materials/metal-organic frameworks/carbon-based materials/ hybrid materials/supported materials have been investigated as prospective catalysts in various types of applications, such as different organic transformation reactions, adsorption, degradation, sensor application, gas separation, hydrogen production, CO2 conversion, etc. The boundaries of catalytic materials and reactions research is expanding day by day with emerging energy needs and environmental aspects. Herein, we invite researchers to contribute their research works covering new improvements in the preparation, characterization, and catalytic applications related to energy, environment, and sustainability. The main aim of the Special Issue is to cover a wide range of topics in the field of catalyst and their applications in diverse areas. The article type includes reviews, research articles (full papers), and communications. Potential topics include but are not limited to:

  • Green techniques for nanomaterials processing;
  • Synthesis and characterization of nanomaterials/metal-organic frameworks/carbon-based materials/hybrid materials/supported materials for catalytic reactions;
  • Fabrication of novel nanomaterials/nanocomposite materials for energy and environmental application.

Dr. Surjyakanta Rana
Dr. Orhan Şişman
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • heterogeneous catalysis
  • nanomaterials
  • supported catalysts
  • nano-composites materials
  • green synthesis
  • metal-organic frameworks

Published Papers (4 papers)

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Research

12 pages, 3901 KiB  
Article
Facile Synthesis of Nano-Flower β-Bi2O3/TiO2 Heterojunction as Photocatalyst for Degradation RhB
by Mingjun Wang, Che Li, Bingfang Liu, Wenzhen Qin and Yu Xie
Molecules 2023, 28(2), 882; https://doi.org/10.3390/molecules28020882 - 16 Jan 2023
Cited by 6 | Viewed by 1760
Abstract
Photocatalysis is a hopeful technology to solve various environmental problems, but it is still a technical task to produce large-scale photocatalysts in a simple and sustainable way. Here, nano-flower β-Bi2O3/TiO2 composites were prepared via a facile solvothermal method, [...] Read more.
Photocatalysis is a hopeful technology to solve various environmental problems, but it is still a technical task to produce large-scale photocatalysts in a simple and sustainable way. Here, nano-flower β-Bi2O3/TiO2 composites were prepared via a facile solvothermal method, and the photocatalytic performances of β-Bi2O3/TiO2 composites with different Bi/Ti molar ratios were studied. The nano-flower Bi2O3/TiO2 composites were studied by SEM, XRD, XPS, BET, and PL. The PL result proved that the construction of staggered heterojunction enhanced the separation efficiency of carriers. The degradation RhB was applied to study the photocatalytic performances of prepared materials. The results showed that the degradation efficiency of RhB increased from 61.2% to 99.6% when the molar ratio of Bi/Ti was 2.1%. It is a mesoporous approach to enhance photocatalytic properties by forming heterojunction in Bi2O3/TiO2 composites, which increases the separation efficiency of the generated carriers and improves photocatalytic properties. The photoactivity of the Bi2O3/TiO2 has no evident changes after the fifth recovery, indicating that the Bi2O3/TiO2 composite has distinguished stability. Full article
(This article belongs to the Special Issue Fabrication of Advanced Materials for Catalysis)
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11 pages, 4326 KiB  
Communication
Carbon Nanotube Supported Molybdenum Carbide as Robust Electrocatalyst for Efficient Hydrogen Evolution Reaction
by Yunjie Huang, Yaqi Bao, Tieqi Huang, Chengzhi Hu, Haiou Qiu and Hongtao Liu
Molecules 2023, 28(1), 192; https://doi.org/10.3390/molecules28010192 - 26 Dec 2022
Cited by 3 | Viewed by 1567
Abstract
Molybdenum carbide is considered to be one of the most competitive catalysts for hydrogen evolution reaction (HER) regarding its high catalytic activity and superior corrosion resistance. But the low electrical conductivity and poor interfacial contact with the current collector greatly inhibit its practical [...] Read more.
Molybdenum carbide is considered to be one of the most competitive catalysts for hydrogen evolution reaction (HER) regarding its high catalytic activity and superior corrosion resistance. But the low electrical conductivity and poor interfacial contact with the current collector greatly inhibit its practical application capability. Herein, carbon nanotube (CNT) supported molybdenum carbide was assembled via electrostatic adsorption combined with complex bonding. The N-doped molybdenum carbide nanocrystals were uniformly anchored on the surfaces of amino CNTs, which depressed the agglomeration of nanoparticles while strengthening the migration of electrons. The optimized catalyst (250-800-2h) showed exceptional electrocatalytic performance towards HER under both acidic and alkaline conditions. Especially in 0.5 M H2SO4 solution, the 250-800-2h catalyst exhibited a low overpotential of 136 mV at a current density of 10 mA/cm2 (η10) with the Tafel slope of 49.9 mV dec−1, and the overpotential only increased 8 mV after 20,000 cycles of stability test. The active corrosive experiment revealed that more exposure to high-activity γ-Mo2N promoted the specific mass activity of Mo, thus, maintaining the catalytic durability of the catalyst. Full article
(This article belongs to the Special Issue Fabrication of Advanced Materials for Catalysis)
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12 pages, 6690 KiB  
Article
Nickel on Oxidatively Modified Carbon as a Promising Cost-Efficient Catalyst for Reduction of P-Nitrophenol
by Shamil Galyaltdinov, Anna Svalova, Vasiliy Brusko, Maria Kirsanova and Ayrat M. Dimiev
Molecules 2022, 27(17), 5637; https://doi.org/10.3390/molecules27175637 - 1 Sep 2022
Cited by 7 | Viewed by 1253
Abstract
The reduction of p-nitrophenol to p-aminophenol has become a benchmark reaction for testing the efficiency of new catalytic systems. In this study, we use oxidatively modified carbon (OMC) as a structural support to develop a new cost-efficient nickel-based catalytic system. The [...] Read more.
The reduction of p-nitrophenol to p-aminophenol has become a benchmark reaction for testing the efficiency of new catalytic systems. In this study, we use oxidatively modified carbon (OMC) as a structural support to develop a new cost-efficient nickel-based catalytic system. The newly developed material comprises single nickel ions, chemically bound to the oxygen functional groups on the OMC surface. The highly oxidized character of OMC ensures the high lateral density of nickel ions on its surface at relatively low nickel content. We demonstrate excellent catalytic properties of the new material by using it as a stationary phase in a prototype of a continuous flow reactor: the reagent fed into the reactor is p-nitrophenol, and the product, exiting the reactor, is the fully converted p-aminophenol. The catalytic properties of the new catalyst are associated with its specific morphology, and with high lateral density of active sites on the surface. The reaction can be considered as an example of single-atom catalysis. The resulting material can be used as an inexpensive but efficient catalyst for industrial wastewater treatment. The study opens the doors for the synthesis of a new series of catalytic systems comprising transition metal atoms on the OMC structural support. Full article
(This article belongs to the Special Issue Fabrication of Advanced Materials for Catalysis)
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10 pages, 3519 KiB  
Article
Effect of TiO2 Calcination Pretreatment on the Performance of Pt/TiO2 Catalyst for CO Oxidation
by Jianyu Cai, Zehui Yu, Xing Fan and Jian Li
Molecules 2022, 27(12), 3875; https://doi.org/10.3390/molecules27123875 - 16 Jun 2022
Cited by 6 | Viewed by 1639
Abstract
In order to improve the CO catalytic oxidation performance of a Pt/TiO2 catalyst, a series of Pt/TiO2 catalysts were prepared via an impregnation method in this study, and various characterization methods were used to explore the effect of TiO2 calcination [...] Read more.
In order to improve the CO catalytic oxidation performance of a Pt/TiO2 catalyst, a series of Pt/TiO2 catalysts were prepared via an impregnation method in this study, and various characterization methods were used to explore the effect of TiO2 calcination pretreatment on the CO catalytic oxidation performance of the catalysts. The results revealed that Pt/TiO2 (700 °C) prepared by TiO2 after calcination pretreatment at 700 °C exhibits a superior CO oxidation activity at low temperatures. After calcination pretreatment, the catalyst exhibited a suitable specific surface area and pore structure, which is beneficial to the diffusion of reactants and reaction products. At the same time, the proportion of adsorbed oxygen on the catalyst surface was increased, which promoted the oxidation of CO. After calcination pretreatment, the adsorption capacity of the catalyst for CO and CO2 decreased, which was beneficial for the simultaneous inhibition of the CO self-poisoning of Pt sites. In addition, the Pt species exhibited a higher degree of dispersion and a smaller particle size, thereby increasing the CO oxidation activity of the Pt/TiO2 (700 °C) catalyst. Full article
(This article belongs to the Special Issue Fabrication of Advanced Materials for Catalysis)
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