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Catalysts
Special Issues
From Design to Application of Nanomaterials in Catalysis
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From Design to Application of Nanomaterials in Catalysis

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

Deadline for manuscript submissions: closed (20 October 2022) | Viewed by 7961

Special Issue Editors

Dr. Maciej Trejda

E-Mail Website
Guest Editor
Department of Heterogeneous Catalysis, Faculty of Chemistry, Adam Mickiewicz University, Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
Interests: mesoporous materials; acidity; basicity; partial oxidation processes; esterification and transesterification processes; niobium-containing catalysts; organosilanes; green chemistry; sustainable chemistry; catalytic transformation of glycerol into valuable products
Dr. Łukasz Wolski

E-Mail Website
Guest Editor
Department of Heterogeneous Catalysis, Faculty of Chemistry, Adam Mickiewicz University, Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
Interests: photocatalytic oxidation; oxidation processes with the use of hydrogen peroxide; hybrid advanced oxidation processes; oxidation of alcohols; degradation of organic pollutants; gold catalysts; mixed oxides; niobium pentoxide; zinc oxide; cerium dioxide

Special Issue Information

Dear Colleagues,

It is difficult to overestimate the role of catalysis in sustainable development. About 20% of the world economy is estimated to depend directly or indirectly on catalysis. Therefore, the intensive research into the development of new catalytic materials is not surprising. An important issue is to find ways of conducting catalytic processes in more cost-effective and environmentally friendly manner. At the same time, the development of nanotechnology and the availability of various characterization techniques, as well as computational methods, offers the possibility of designing catalytic systems even at the molecular level. In this context, the elucidation of the interaction of the catalyst active sites with the support and promoters as well as with the substrates is essential.

The focus of this Special Issue is to bring up the latest achievements and results in the field of synthesis, characterization, and application of nanocatalysts.

Dr. Maciej Trejda
Dr. Łukasz Wolski
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. Catalysts is an international peer-reviewed open access monthly 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

  • Nanocatalysts
  • nanotechnology
  • catalysts characterization
  • metal–support interaction
  • promoters
  • computational methods
  • sustainable chemistry
  • green chemistry

Published Papers (4 papers)

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Research

14 pages, 3471 KiB  
Article
Enhanced Photocatalytic Performance of Visible-Light-Driven BiVO4 Nanoparticles through W and Mo Substituting
by Chien-Yie Tsay, Ching-Yu Chung, Chin-Yi Chen, Yu-Cheng Chang, Chi-Jung Chang and Jerry J. Wu
Catalysts 2023, 13(3), 475; https://doi.org/10.3390/catal13030475 - 26 Feb 2023
Cited by 8 | Viewed by 1856
Abstract
Bismuth vanadate (BiVO4), W-doped BiVO4 (BiVO4:W), and Mo-doped BiVO4 (BiVO4:Mo) nanoparticles were synthesized at pH = 4 using a green hydrothermal method. The effects of 2 at% W or Mo doping on the microstructural and [...] Read more.
Bismuth vanadate (BiVO4), W-doped BiVO4 (BiVO4:W), and Mo-doped BiVO4 (BiVO4:Mo) nanoparticles were synthesized at pH = 4 using a green hydrothermal method. The effects of 2 at% W or Mo doping on the microstructural and optical characteristics of as-prepared BiVO4 nanoparticles and the effect of combining particle morphology modification and impurity dopant incorporation on the visible-light-derived photocatalytic degradation of dilute Rhodamine B (RhB) solution are studied. XRD examination revealed that these obtained BiVO4-based nanoparticles had a highly crystalline and single monoclinic phase. SEM and TEM observations showed that impurity doping could modify the surface morphology, change the particle shape, and reduce the particle diameter to enlarge their specific surface area, increasing the reactive sites of the photocatalytic process. XPS and FL measurements indicated that W- and Mo-doped nanoparticles possessed higher concentrations of oxygen vacancies, which could promote the n-type semiconductor property. It was found that the BiVO4:W and BiVO4:Mo powder samples exhibited better photocatalytic activity for efficient RhB removal than that shown by pristine BiVO4 powder samples under visible light illumination. That feature can be ascribed to the larger surface area and improved concentration of photogenerated charge carriers of the former. Full article
(This article belongs to the Special Issue From Design to Application of Nanomaterials in Catalysis)
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17 pages, 11848 KiB  
Article
Nano-ZrO2-Catalyzed Biginelli Reaction and the Synthesis of Bioactive Dihydropyrimidinones That Targets PPAR-γ in Human Breast Cancer Cells
by Suresha N. Deveshegowda, Ji-Rui Yang, Zhang Xi, Omantheswara Nagaraja, Kashifa Fazl-Ur-Rahman, Bhanuprakash C. Narasimhachar, Gautam Sethi, Ganga Periyasamy, Mahendra Madegowda, Shobith Rangappa, Vijay Pandey, Peter E. Lobie and Basappa Basappa
Catalysts 2023, 13(2), 228; https://doi.org/10.3390/catal13020228 - 18 Jan 2023
Cited by 7 | Viewed by 2156
Abstract
Bioactive dihydropyrimidinones (DHPs) were designed and synthesized by a multicomponent Biginelli reaction. The reaction was catalyzed by the polarized surface of nano-zirconium dioxide with partial positive charge of 0.52e at the Zr center and a negative charge of −0.23e at the oxygen center. [...] Read more.
Bioactive dihydropyrimidinones (DHPs) were designed and synthesized by a multicomponent Biginelli reaction. The reaction was catalyzed by the polarized surface of nano-zirconium dioxide with partial positive charge of 0.52e at the Zr center and a negative charge of −0.23e at the oxygen center. There was good corroboration between the computed and experimental ZrO2 cell parameters and bond distances as determined by in silico and in vitro experimental methods. Since DHPs were found to target the peroxisome proliferator-activated receptor (PPAR)-γ, we tested these ligands toward MCF-7 cell toxicity, which revealed that the compounds 4d [ethyl-4-(4′-fluoro-[1,1′-biphenyl]-4-yl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate] and 4e [ethyl-4-(3′-methoxy-[1,1′-biphenyl]-4-yl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate] inhibited proliferation with IC50 values of 11.8 and 15.8 μM, respectively. Further, our bioinformatic analysis found that the active molecule 4d, fit into the enzyme’s catalytic site, almost in the same position as rosiglitazone, which was buried deep inside the cavity. In conclusion, we herein report novel DHPs which could be better structures to help explore a new class of synthetic PPAR-γ ligands. Full article
(This article belongs to the Special Issue From Design to Application of Nanomaterials in Catalysis)
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28 pages, 8092 KiB  
Article
Synthesis, Characterization and Investigation of Cross-Linked Chitosan/(MnFe2O4) Nanocomposite Adsorption Potential to Extract U(VI) and Th(IV)
by Marwa Alaqarbeh, Fawwaz Khalili, Mohammed Bouachrine and Abdulrahman Alwarthan
Catalysts 2023, 13(1), 47; https://doi.org/10.3390/catal13010047 - 26 Dec 2022
Cited by 2 | Viewed by 1472
Abstract
A cross-linked chitosan/(MnFe2O4) CCsMFO nanocomposite was prepared using co-precipitation methods and used as a nanomaterial to extract U(VI) and Th(IV) from an aqueous solution based on adsorption phenomena. The contact time of experiments shows a rapid extraction process within [...] Read more.
A cross-linked chitosan/(MnFe2O4) CCsMFO nanocomposite was prepared using co-precipitation methods and used as a nanomaterial to extract U(VI) and Th(IV) from an aqueous solution based on adsorption phenomena. The contact time of experiments shows a rapid extraction process within 30 min by the CCsMFO nanocomposite. The solution pH acts a critical role in determining qm value, where pH 3.0 was the best pH value to extract both ions. The pseudo-second-order equilibrium model illustrated the kinetics equilibrium modal extraction process. Adsorption isotherm of U(VI) at pH 3.0 by CCsMFO nanocomposite is an endothermic process. In contrast, the adsorption isotherm of Th(IV) at pH 3.0 by CCsMFO nanocomposite is an exothermic process. The reusability of CCsMFO nanocomposite was tested using basic eluents as suitable conditions for the chemical stability of CCsMFO nanocomposite; the reusability results show promising results for the removal of U(VI) adsorbed onto CCsMFO nanocomposite with 77.27%, after 12 h by Na2CO3 as eluent. At the same time, the reusability results show good reusability for removal of U(VI) adsorbed onto CCsMFO nanocomposite with 21.82%, after 8 h by EDTA as eluent. Full article
(This article belongs to the Special Issue From Design to Application of Nanomaterials in Catalysis)
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13 pages, 4011 KiB  
Article
Au@CdS Nanocomposites as a Visible-Light Photocatalyst for Hydrogen Generation from Tap Water
by Ying-Ru Lin, Yu-Cheng Chang, Yung-Chang Chiao and Fu-Hsiang Ko
Catalysts 2023, 13(1), 33; https://doi.org/10.3390/catal13010033 - 24 Dec 2022
Cited by 9 | Viewed by 1703
Abstract
The Au@CdS nanocomposites have been synthesized using a combination of wet chemical and hydrothermal approaches at lower reaction temperatures. The concentrations of CdS precursors and reaction temperature can be essential in influencing photocatalytic water splitting under blue-LED light excitation. The optimized Au@CdS nanocomposites [...] Read more.
The Au@CdS nanocomposites have been synthesized using a combination of wet chemical and hydrothermal approaches at lower reaction temperatures. The concentrations of CdS precursors and reaction temperature can be essential in influencing photocatalytic water splitting under blue-LED light excitation. The optimized Au@CdS nanocomposites (5 mM CdS precursors and 100 °C) exhibited the highest hydrogen evolution rate of 1.041 mmolh−1 g−1, which is 175.3 times higher than CdS nanoparticles for de-ionized water under blue-LED light excitation. This result is ascribed to separate photogenerated charge carriers and increased light absorption by the Au core. The Au@CdS nanocomposites (1.204 mmolh−1 g−1) revealed significant applications in photocatalytic tap water splitting under blue-LED light excitation, which is 512.3 times higher than CdS nanoparticles. In addition, reusability experiments demonstrate that Au@CdS nanocomposites exhibit excellent stability for the long-term photocatalytic tap water splitting process. Furthermore, this research shows that Au nanoparticles decorated with CdS shells effectively achieve high-efficiency conversion from light to hydrogen energy. Full article
(This article belongs to the Special Issue From Design to Application of Nanomaterials in Catalysis)
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