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Catalysts
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Advances in Photocatalytic Biomaterials
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Advances in Photocatalytic Biomaterials

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

Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 8622

Special Issue Editor

Dr. Omid Akhavan

E-Mail Website
Guest Editor
Department of Physics, Sharif University of Technology, Tehran P.O. Box 11155-9161, Iran
Interests: nanomaterials; graphene; catalysts; photocatalysts; antibacterial materials; biomaterials

Special Issue Information

Dear Colleagues,

This Special Issue is focused on the catalytic, photocatalytic, and enzymatic activity of nanomaterials, green materials and/or biocompatible materials in various applications such as antibacterial and antifungal applications, and cell interactions with nanomaterials and the related mechanisms.

Dr. Omid Akhavan
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

  • nanomaterials
  • catalysts
  • photocatalysts
  • enzymatic activity
  • green materials
  • biomaterials
  • antibacterial applications

Published Papers (2 papers)

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Research

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16 pages, 3864 KiB  
Article
Co–HOAT Complexes Change Their Antibacterial and Physicochemical Properties with Morphological Evolution
by Xiaolin Xu, Mengna Ding, Shiwen Yu, Fujian Lv, Yun Zhang, Yingchun Miao, Zhenfeng Bian and Hexing Li
Catalysts 2024, 14(3), 173; https://doi.org/10.3390/catal14030173 - 27 Feb 2024
Viewed by 843
Abstract
Antibacterial coordination compounds have attracted tremendous attention ascribed to their excellent designability. However, how the morphological evolution of these complexes influences their antibacterial and physicochemical properties has never been investigated based on proposed mechanisms. Thus, a series of Co–HOAT coordination compounds synthesized from [...] Read more.
Antibacterial coordination compounds have attracted tremendous attention ascribed to their excellent designability. However, how the morphological evolution of these complexes influences their antibacterial and physicochemical properties has never been investigated based on proposed mechanisms. Thus, a series of Co–HOAT coordination compounds synthesized from inorganic to organic cobalt sources were prepared. We propose that with the same HOAT ligand, inorganic Co–HOAT nanosheets possess higher sterilization rates compared with organic Co–HOAT nanoparticles. This is explained by the different steric hindrance of cobalt sources. Relatively small steric hindrance could lead to ample active positions for inorganic cobalt ions to coordinate with both N and O atoms in HOAT. Meanwhile, organic Co2+ ions could only unite with N atoms in HOAT. Furthermore, by theoretical calculation, cobalt ions with adequate coordination sites are beneficial for developing nanosheet morphologies. Meanwhile, the Co–HOAT complexes with a lower density of electron clouds present higher sterilization rates due to the anchoring effect of electrostatic attraction. The proposed mechanism is that Co2+ released from compounds could cause multiple toxic effects to bacteria anchored by Co–HOATs. Finally, Co–HOATs’ behaviors have excellent antimicrobial properties without environmental limitations. In conclusion, the Co–HOATs appear to be a potential antibacterial catalyst in the antimicrobial field. Full article
(This article belongs to the Special Issue Advances in Photocatalytic Biomaterials)
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Review

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24 pages, 3765 KiB  
Review
Green Synthesis of Magnesium Oxide Nanoparticles and Nanocomposites for Photocatalytic Antimicrobial, Antibiofilm and Antifungal Applications
by Marzieh Ramezani Farani, Majid Farsadrooh, Iman Zare, Amir Gholami and Omid Akhavan
Catalysts 2023, 13(4), 642; https://doi.org/10.3390/catal13040642 - 23 Mar 2023
Cited by 26 | Viewed by 7469
Abstract
Magnesium oxide nanoparticles (MgO NPs) have emerged as potential materials for various biomedical applications due to their unique physicochemical properties, including biodegradability, biocompatibility, cationic capacity, high stability and redox properties. MgO NPs have become an attractive platform to combat microbes and may be [...] Read more.
Magnesium oxide nanoparticles (MgO NPs) have emerged as potential materials for various biomedical applications due to their unique physicochemical properties, including biodegradability, biocompatibility, cationic capacity, high stability and redox properties. MgO NPs have become an attractive platform to combat microbes and may be a promising alternative to overcome challenges associated with eliminating microbial biofilms and antibiotic resistance. Hence, due to the increasing use of MgO NPs in biomedicine, new synthetic strategies for MgO NPs are necessary. MgO NPs synthesised using green methods are non-toxic, eco-friendly and have high stability for a wide range of biological, medical and catalytic applications. This review presents the recent advances in biosynthesis strategies of MgO NPs by diverse bio-templates, such as plant, bacterial, fungal and algal extracts. Its photocatalytic properties show a suitable inhibitory function against pathogenic agents, such as microbial proliferation, biofilm formation and fungal growth. Furthermore, MgO NPs and relevant nanocomposites are comprehensively discussed regarding the mechanisms of their effect on microbes, biofilms and fungal strains, as well as challenges and future perspectives. Full article
(This article belongs to the Special Issue Advances in Photocatalytic Biomaterials)
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