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Nanomaterials
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Semiconductor-Based Nanomaterials for Photocatalytic Applications-Volume II
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Semiconductor-Based Nanomaterials for Photocatalytic Applications-Volume II

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanophotonics Materials and Devices".

Deadline for manuscript submissions: 30 April 2024 | Viewed by 924

Special Issue Editor

Dr. Vincenzo Vaiano

E-Mail Website
Guest Editor
Department of Industrial Engineering, University Salerno, Via Giovanni Paolo 2 132, I-84084 Fisciano, Salerno, Italy
Interests: photocatalysis for sustainable chemistry; photocatalytic and photo-fenton processes for pollutants removal in wastewater; catalytic combustion of sewage sludge; decomposition and oxidative decomposition of H2S; hydrolysis of COS in the liquid phase
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In recent years, semiconductor-based nanomaterials have been the object of extensive research. These types of nanomaterials can be employed as catalysts in a number of applications of heterogeneous photocatalysis, such as air and water treatment, the synthesis of organic compounds in mild conditions, hydrogen production from water splitting, and CO2 transformation. This Special Issue is devoted to the formulation of new semiconductor-based nanomaterials, their chemical–physical characterization via traditional and innovative experimental techniques, and their performances in photocatalytic reactions. Research and review papers related to the preparation and characterization of nanomaterials with semiconductor properties and their application in UV or visible (or solar light)-driven photocatalytic reactions are welcome in this Special Issue.

Dr. Vincenzo Vaiano
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. Nanomaterials 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 2900 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

  • semiconductor nanomaterials
  • preparation methods
  • chemical-physical characterization
  • heterogeneous photocatalysis

Published Papers (1 paper)

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Research

17 pages, 3881 KiB  
Article
Photocatalytic Degradation of Ceftriaxone Using TiO2 Coupled with ZnO Micronized by Supercritical Antisolvent Route
by Antonietta Mancuso, Stefania Mottola, Olga Sacco, Vincenzo Vaiano and Iolanda De Marco
Nanomaterials 2023, 13(24), 3130; https://doi.org/10.3390/nano13243130 - 13 Dec 2023
Cited by 3 | Viewed by 642
Abstract
Heterogeneous photocatalysis is a promising technique for removing pollutants from water. In this work, supercritical antisolvent (SAS)-micronized ZnO (ZnOSAS) is coupled with commercial anatase TiO2 (PC50) to study the photocatalytic degradation of ceftriaxone under UV and visible light. Diffuse ultraviolet–visible [...] Read more.
Heterogeneous photocatalysis is a promising technique for removing pollutants from water. In this work, supercritical antisolvent (SAS)-micronized ZnO (ZnOSAS) is coupled with commercial anatase TiO2 (PC50) to study the photocatalytic degradation of ceftriaxone under UV and visible light. Diffuse ultraviolet–visible reflectance (UV−vis DRS) measurement revealed that the presence of ZnO leads to a slight absorption in the visible region. Wide-angle X-ray diffraction (WAXD) analysis showed the presence of both ZnO wurtzite and TiO2 anatase crystalline phases in the composite. Photocatalytic tests proved that the activity of the ZnOSAS/PC50 composite is higher than that of commercial ZnO, SAS-micronized ZnO, and PC50, allowing complete ceftriaxone degradation under UV light after only 2 min of irradiation time. In contrast, about 90% of ceftriaxone degradation is achieved after 180 min of visible-light irradiation. The photocatalytic results for an experiment carried out in the presence of probe scavenger molecules for reactive oxygen species show that hydroxyl radicals and positive holes are both reactive species involved in the ceftriaxone photocatalytic degradation mechanism. Finally, reuse cycles of the ZnOsas/PC50 composite are performed, demonstrating the stability and recyclability of the photocatalyst. Full article
(This article belongs to the Special Issue Semiconductor-Based Nanomaterials for Photocatalytic Applications-Volume II)
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