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Catalysts
Special Issues
Recently Advance in Nanoparticle for Photocatalysis
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Recently Advance in Nanoparticle for Photocatalysis

A special issue of Catalysts (ISSN 2073-4344).

Deadline for manuscript submissions: closed (31 July 2020) | Viewed by 8691

Special Issue Editors

Prof. Dr. Jaesool Shim

E-Mail Website
Guest Editor
School of Mechanical Engineering, Yeungnam University, 214-1 Dae-dong Gyeongsan-si, Gyeongsangbuk-do 712-749, Korea
Interests: reliability of mechanical components; nano/MEMS applications; hydrogen generation
Special Issues, Collections and Topics in MDPI journals
Dr. Parthasarathi Bera

E-Mail Website
Guest Editor
Surface Engineering Division, CSIR–National Aerospace Laboratories, Bengaluru 560017, India
Interests: synthesis of nanomaterials; catalysis for energy and environment; thin films and coatings for engineering applications; X-ray photoelectron spectroscopy
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

For the past few decades, nanoparticle catalysts have seen substantial improvements as this field offers great potential opportunities to develop new catalysts with superior activities, and long-term stability. However, these nanoparticle catalysts mainly depend on surface chemistry, carrier generation and transportation, surface defects, interaction with the support and their electronic effects are responsible for the novel catalytic activity of these nanoparticles catalysts over their counterparts. The field of nanoparticle catalysis, today, therefore, covers a wide range of applications and this Special Issue will cover recent advances in this exciting and encouraging field of research.

We invite you to submit your research in the form of original full-length articles, short communications, perspective articles, and mini-reviews to this Special Issue on “Recent Advances in Nanoparticle Catalysts” that reflect state-of-the-art research in nanoparticle catalysis, on the following topics: Design and synthesis of nanoparticles catalysts, growth mechanism of nanoparticles catalysts, nanoparticle clusters and agglomeration, structural stability, role of surface chemistry and its structure, nanoparticles composite and electronic effects, effect of surface area on catalyst/electrolyte interface, catalysts in oxidation reactions, catalyst stability and regeneration, reaction kinetics and dynamics studies on nanoparticles catalysts, nanoparticles catalysts for antimicrobials, nanoparticles catalysts for environmental remediation, nanoparticles catalysts for organic dye degradations, and nanoparticles catalysts for eco-friendly fuels.

Prof. Dr. Jaesool Shim
Dr. Parthasarathi Bera
Guest Editor

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

  • nanoparticles
  • catalysts
  • surface chemistry
  • charge kinetics
  • for eco-friendly applications
  • interface mechanisms

Published Papers (3 papers)

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Research

16 pages, 6069 KiB  
Article
Semiconducting Nanocrystalline Bismuth Oxychloride (BiOCl) for Photocatalytic Reduction of CO2
by Dalia Sánchez-Rodríguez, Alma Berenice Jasso-Salcedo, Niklas Hedin, Tamara L. Church, Aitor Aizpuru and Vladimir Alonso Escobar-Barrios
Catalysts 2020, 10(9), 998; https://doi.org/10.3390/catal10090998 - 1 Sep 2020
Cited by 7 | Viewed by 3464
Abstract
The reduction of CO2 is relevant for the production of compounds as part of the carbon capture and utilization research approaches. Thus, photocatalytic reduction of CO2 over a tailored BiOCl-based photocatalyst (BTEG) was tested under UV light (365 nm). BTEG was [...] Read more.
The reduction of CO2 is relevant for the production of compounds as part of the carbon capture and utilization research approaches. Thus, photocatalytic reduction of CO2 over a tailored BiOCl-based photocatalyst (BTEG) was tested under UV light (365 nm). BTEG was synthesized in the presence of triethylene glycol, which gave 4-nm crystallites, much smaller than the 30 nm crystallites of commercial BiOCl. Commercial BiOCl reduced CO2 mainly to methane with a minor fraction of ethanol, and was inactivated after 20 h. BTEG was a more active catalyst for CO2 photoreduction, producing approximately equal amounts of methane, methanol, and ethanol while consuming 0.38 µmol g−1 h−1 of CO2 before the experiment was stopped after 43 h, with the catalyst still active. The different products formed by the BTEG photocatalyst samples were tentatively ascribed to its greater content of {110} facets. Thus, in addition to band-gap tuning, the relative fractions of BiOCl facets had a key role in the effective photocatalytic reduction of CO2, and the BiOCl-based BTEG catalyst promoted the formation of important compounds as methanol and ethanol. Full article
(This article belongs to the Special Issue Recently Advance in Nanoparticle for Photocatalysis)
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18 pages, 7268 KiB  
Article
Photoelectrochemical Studies on Metal-Doped Graphitic Carbon Nitride Nanostructures under Visible-Light Illumination
by I. Neelakanta Reddy, N. Jayashree, V. Manjunath, Dongseob Kim and Jaesool Shim
Catalysts 2020, 10(9), 983; https://doi.org/10.3390/catal10090983 - 1 Sep 2020
Cited by 7 | Viewed by 2448
Abstract
Recently, the engineering of optical bandgaps and morphological properties of graphitic carbon nitride (g-C3N4) has attracted significant research attention for photoelectrodes and environmental remediation owing to its low-cost synthesis, availability of raw materials, and thermal physical–chemical stability. However, the [...] Read more.
Recently, the engineering of optical bandgaps and morphological properties of graphitic carbon nitride (g-C3N4) has attracted significant research attention for photoelectrodes and environmental remediation owing to its low-cost synthesis, availability of raw materials, and thermal physical–chemical stability. However, the photoelectrochemical activity of g-C3N4-based photoelectrodes is considerably poor due to their high electron–hole recombination rate, poor conductivity, low quantum efficiency, and active catalytic sites. Synthesized Ni metal-doped g-C3N4 nanostructures can improve the light absorption property and considerably increase the electron–hole separation and charge transfer kinetics, thereby initiating exceptionally enhanced photoelectrochemical activity under visible-light irradiation. In the present study, Ni dopant material was found to evince a significant effect on the structural, morphological, and optical properties of g-C3N4 nanostructures. The optical bandgap of the synthesized photoelectrodes was varied from 2.53 to 2.18 eV with increasing Ni dopant concentration. The optimized 0.4 mol% Ni-doped g-C3N4 photoelectrode showed a noticeably improved six-fold photocurrent density compared to pure g-C3N4. The significant improvement in photoanode performance is attributable to the synergistic effects of enriched light absorption, enhanced charge transfer kinetics, photoelectrode/aqueous electrolyte interface, and additional active catalytic sites for photoelectrochemical activity. Full article
(This article belongs to the Special Issue Recently Advance in Nanoparticle for Photocatalysis)
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11 pages, 2275 KiB  
Article
Identifying Iron-Bearing Nanoparticle Precursor for Thermal Transformation into the Highly Active Hematite Photo-Fenton Catalyst
by Anna Šutka, Andris Šutka, Mārtiņš Vanags, Arnita Spule, Raivis Eglītis, Svetlana Vihodceva, Krišjānis Šmits, Aile Tamm and Linda Mežule
Catalysts 2020, 10(7), 778; https://doi.org/10.3390/catal10070778 - 12 Jul 2020
Cited by 5 | Viewed by 2342
Abstract
The hematite photo-Fenton catalysis has attracted increasing attention because it offers strong oxidation of organic pollutants under visible light at neutral pH. In the present work, aqueous synthesis of hematite photo-Fenton catalysts with high activity is demonstrated. We compare photo-Fenton activity for hematite [...] Read more.
The hematite photo-Fenton catalysis has attracted increasing attention because it offers strong oxidation of organic pollutants under visible light at neutral pH. In the present work, aqueous synthesis of hematite photo-Fenton catalysts with high activity is demonstrated. We compare photo-Fenton activity for hematite obtained by hydrolyzation at 60 °C or by a thermally induced transformation from iron-bearing nanoparticles, such as amorphous iron oxyhydroxide or goethite. A link between their structure and visible light photo-Fenton reactivity is established. The highest activity was observed for hematite obtained from goethite nanowires due to oblong platelet-like structure, high surface area and the presence of nanopores. Full article
(This article belongs to the Special Issue Recently Advance in Nanoparticle for Photocatalysis)
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