Special Issue "Nanomaterials for Photocatalysis and Piezo-Photocatalysis"

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

Deadline for manuscript submissions: 31 July 2022.

Special Issue Editors

Dr. Rosanna Pagano
E-Mail Website
Guest Editor
Department of Biological and Environmental Sciences and Technologies, (DISTEBA), University of Salento, Via Monteroni, I-73100 Lecce, Italy
Interests: development of nanomaterials for applications in photodegradation and piezo-photodegradation; preparation of molecular films using wet immobilization techniques for applications such as active layers for the construction of pollutant sensors and for applications in the field of photodegradation
Prof. Dr. Ludovico Valli
E-Mail Website
Guest Editor
Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, Via Monteroni, I-73100 Lecce, Italy
Interests: immobilization of different materials by humid techniques; characterization by spectroscopic techniques; applications of the deposited active layers in photo-induced phenomena (charge and/or energy transfer); chemical sensors; drug delivery through nanoassemblies and nanoparticles
Special Issues, Collections and Topics in MDPI journals
Dr. Zois Syrgiannis
E-Mail Website
Guest Editor
Simpson Querrey Institute, Northwestern University, Chicago, IL 60611, USA
Interests: hybrid materials; supramolecular systems; photocatalysis; photoelectrodes; nanomaterials; photosensitization
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Water pollution, due to increased agricultural and industrial activities, has affected the quality of life and the ecosystem in recent years. Major toxic pollutants include metal ions, personal care products, and in particular drugs that are largely used by modern populations. Photocatalysis is a method applied to photochemical reactions, carried out with a catalyst which is activated by the light of a suitable wavelength. Photocatalysis research is rising to develop green technologies for the remediation of pollutants and for energy production. Classical photocatalysts are represented by semiconductors, such as TiO2, ZnO, CeO2, FexOy, etc., or a combination of them.

ZnO is one of the most studied and characterized materials thanks to its piezoelectric features. By using piezoelectric materials, an increase in the photocatalytic efficiency can be achieved if piezoelectric photocatalysts are simultaneously subjected to light radiation and mechanical stress. In recent years, the dual use of these two features of ZnO has led to the rise of a new research field, so-called piezo-photocatalysis. Additionally, interesting optical features have been reported for nanostructured carbon allotropes (such as carbon nanodots, graphene dots, etc.) making them suitable to be integrated in photocatalytic systems. Moreover, the synthetic procedures for carbon dots are totally in line with green and sustainable chemistry.

The purpose of the Special Issue is to describe novel, innovative, and environmentally friendly synthesis of nanomaterials (inorganic, organic or hybrid) for applications in photocatalysis. Articles, reviews, and opinion letters by experts in the field are also welcome.

Dr. Rosanna Pagano
Prof. Dr. Ludovico Valli
Dr. Zois Syrgiannis
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 papers will be 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 2000 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.


  • photocatalysis
  • nanomaterials
  • hybrid nanostructures
  • pollutants
  • synthesis of new hybrid materials
  • piezo-photodegradation
  • environmental contaminant drugs
  • sustainable procedures
  • green chemistry

Published Papers

This special issue is now open for submission, see below for planned papers.

Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Green synthesis of bimetallic nanoparticles for the degradation of dyes and antibiotics in water
Authors: Nomso Hintsho-Mbita
Affiliation: University of Limpopodisabled, Sovenga, South Africa

Title: Synthesis and characterization of Zinc oxide nanoparticles using Acacia caesia bark extract and its photo-catalytic and antimicrobial activities
Authors: Ashwini Jayachandran 1; Aswathy T.R.1; Rahul Anil Babu 2; Thara Gautham M. 2; Achuthsankar S. Nair 1
Affiliation: 1Department of Computational Biology & Bioinformatics,University of Kerala, India 2 Department of Biotechnology, Sree Chithra Thirunal College of Engineering, Kerala, India
Abstract: This paper presents green synthesis and characterization of ZnO nanoparticles and their microbial and photo-catalytic application. Green synthesis of ZnO nanoparticles were synthesized by the bio-reduction of Zinc nitrate hexahydrate using the bark of Acacia caesia. The Zinc compound and the Acacia caesia extract was made to react at various temperature and concentration and an optimum temperature of 65°C was taken for the current study. The synthesized nanoparticles were characterized using UV-visible spectroscopy, SEM, XRD, FTIR and EDX analysis. UV visible spectroscopy was carried out to confirm the formation of nanoparticles. UV spectroscopic analysis showed a characteristic peak at 338nm which is specific for ZnO and the band-gap energy was found to be 3.67eV. SEM confirmed the presence of ZnO its nano scale. EDX gave the elemental details of Zinc constituting 37.77% and Oxygen constituting to 20.77% of its atomic weight. XRD analysis gave the spectrum indexed at various angles corresponding to ZnO nanoparticles. It also revealed the particle size to be 32.32nm and the shape was found to be hexagonal. The functional group present in the nanoparticles were characterized using FTIR which gave characteristic peak at 485 cm-1. The synthesized nanoparticles exhibited significant photo-catalytic (methyl red and Eosin Y under solar irradiation), anti-bacterial (Escherichia coli, Staphylococcus aureus), anti-fungal (Aspergillus niger, Candida albicans) and anti- inflammatory properties. The nanoparticles were synthesized in an eco- friendly and cost-effective method. The study opens new horizons in the field of water treatment, biosensor and nanotechnology.

Title: Bio-photo-kinetic reduction of CO2 in anaerobic biogas produced from wastewater
Authors: Sudesh Rathilal
Affiliation: Durban University of Technology, South Africa

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