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Molecular Design, Synthesis, and Characterization of Photocatalytic Materials

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Materials Science".

Deadline for manuscript submissions: closed (30 April 2024) | Viewed by 806

Special Issue Editors


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Guest Editor
Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, 30-387 Kraków, Poland
Interests: photocatalysis; electrocatalysis; material design; energy storage systems

E-Mail Website
Guest Editor
Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, 30-387 Kraków, Poland
Interests: visible light photocatalysis; photoinactivation of bacteria; surface modified materials

Special Issue Information

Dear Colleagues,

Sustainable development urges us to focus on the design and engineering of materials that are active under solar light illumination. Photocatalytic activity is highly dependent on the intrinsic electronic and structural properties of photocatalysts, such as the shape, surface area, size of the particles, and exposed facets. The electronic properties can be modified by the interaction of an organic molecule/dye with the photocatalyst. At the same time, the structural properties can be tuned by synthesis methods, for instance using organic molecules and polymers to create a porous structure. These properties have an immense influence on the efficiency, mechanism, and spectral range of photocatalytic activity.

In this Special Issue, we aim to explore the impact of the electronic and structural properties of photocatalysts on the efficiency of these materials in solar-driven processes. The issue focuses on research at the molecular and mechanistic levels. Papers dealing with energy conversion and air/water decontamination are welcome. We invite researchers working in applied and basic sciences to submit their original works, short communications, and review articles to contribute to this Special Issue.

Dr. Taymaz Tabari
Dr. Przemysław Labuz
Guest Editors

Manuscript Submission Information

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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. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

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Keywords

  • photocatalysis
  • surface modification
  • organic dye
  • visible light active material
  • electronic properties
  • morphology
  • mechanism
  • semiconductor

Published Papers (1 paper)

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Research

24 pages, 5484 KiB  
Article
Robust Photocatalytic MICROSCAFS® with Interconnected Macropores for Sustainable Solar-Driven Water Purification
by Mário Vale, Beatriz T. Barrocas, Rita M. N. Serôdio, M. Conceição Oliveira, José M. Lopes and Ana C. Marques
Int. J. Mol. Sci. 2024, 25(11), 5958; https://doi.org/10.3390/ijms25115958 - 29 May 2024
Viewed by 508
Abstract
Advanced oxidation processes, including photocatalysis, have been proven effective at organic dye degradation. Tailored porous materials with regulated pore size, shape, and morphology offer a sustainable solution to the water pollution problem by acting as support materials to grafted photocatalytic nanoparticles (NPs). This [...] Read more.
Advanced oxidation processes, including photocatalysis, have been proven effective at organic dye degradation. Tailored porous materials with regulated pore size, shape, and morphology offer a sustainable solution to the water pollution problem by acting as support materials to grafted photocatalytic nanoparticles (NPs). This research investigated the influence of pore and particle sizes of photocatalytic MICROSCAFS® on the degradation of methyl orange (MO) in aqueous solution (10 mg/L). Photocatalytic MICROSCAFS® are made of binder-less supported P25 TiO2 NPs within MICROSCAFS®, which are silica–titania microspheres with a controlled size and interconnected macroporosity, synthesized by an adapted sol–gel method that involves a polymerization-induced phase separation process. Photocatalytic experiments were performed both in batch and flow reactors, with this latter one targeting a proof of concept for continuous transformation processes and real-life conditions. Photocatalytic degradation of 87% in 2 h (batch) was achieved, using a calibrated solar light simulator (1 sun) and a photocatalyst/pollutant mass ratio of 23. This study introduces a novel flow kinetic model which provides the modeling and simulation of the photocatalytic MICROSCAFS® performance. A scavenger study was performed, enabling an in-depth mechanistic understanding. Finally, the transformation products resulting from the MO photocatalytic degradation were elucidated by high-resolution mass spectrometry experiments and subjected to an in silico toxicity assessment. Full article
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