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Catalysts
Special Issues
Recent Advances on Carbon and Noble-Metal Based Photocatalysts
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Recent Advances on Carbon and Noble-Metal Based Photocatalysts

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

Deadline for manuscript submissions: closed (31 August 2018) | Viewed by 7273

Special Issue Editors

Dr. Jose L. Hueso

E-Mail Website1 Website2
Guest Editor
1. Institute of Nanoscience and Materials of Aragon (INMA), Spanish Research Council-University of Zaragoza (CSIC-University of Zaragoza), 50009 Zaragoza, Spain
2. Department of Chemical and Environmental Engineering, University of Zaragoza, 50009 Zaragoza, Spain
3. Centro de Investigación Biomédica en Red (CIBER-BBN), Instituto de Salud Carlos III, 28049 Madrid, Spain
Interests: carbon nanodots; plasmonic photocatalysts; carbon dioxide revalorization; enzyme-like photocatalysts; VOCs oxidation
Special Issues, Collections and Topics in MDPI journals
Dr. Carlos Bueno-Alejo

E-Mail Website
Guest Editor
Institute of Nanoscience of Aragon and Department of Chemical and Environmental Engineering, University of Zaragoza, SpainEdif. I+D, Campus Río EbroC/ Mariano Esquillor, s/n50018-Zaragoza, Spain
Interests: Nanoparticles synthesis, plasmonic, photocatalysis, light mediated processes, photophysics, graphene and derivatives
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Bunsho Ohtani

E-Mail Website
Guest Editor
Institute for Catalysis, Hokkaido University, Sapporo 001-0021, Japan
Interests: photocatalysis; particle chemistry; electrochemistry
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In recent years, photocatalysis has boosted its contribution and relevance in multiple societal challenges related with environmental (water and air purification), energetic (generation of fine chemicals or clean fuels) or biological issues, to name a few. A vast number of publications, reviews, and Special Issues (including in this journal: https://www.mdpi.com/journal/catalysts/special_issues) have been published and devoted to the use of semiconductors and other materials as catalyst for those photocatalytic reactions. Nevertheless, the margin for further development is still wide open. This Special Issue aims at highlighting the most recent breakthroughs and discoveries carried out in this hot field with an especial emphasis on the advances made in the synthesis of photocatalysts based on carbon nanostructured supports (i.e., CNTs, C3N4, graphene, RGO, etc.) or that alternatively combine the use of conventional semiconductor supports with carbon nanostructures acting as sensitizers (i.e., carbon dots, graphene dots, carbon layers, etc.) to expand the photoresponse towards the visible-near infrared (NIR) range to enhance their photo-response in the visible-near infrared range. Special attention will be also devoted to noble-metal based photocatalysts capable of absorbing light in this same visible-NIR ranges that constitute themselves as plasmonic photocatalysts or can act as sensitizers. The application of these photocatalytic materials towards less explored reactions such as gas phase or in situ biophotocatalytic processes will be also especially welcome in this Special Issue. Additional information on previous Special Issues, launched by the the journal, can be found at https://www.mdpi.com/journal/catalysts/special_issues.

Dr. Jose L. Hueso
Dr. Carlos Bueno-Alejo
Prof. Dr. Bunsho Ohtani
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 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

  • Carbon nanodots
  • Graphene
  • RGO
  • C3N4
  • noble metal
  • plasmon
  • gold
  • gas phase photocatalysis
  • Visible-NIR range
  • hybrids

Published Papers (2 papers)

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Research

16 pages, 2831 KiB  
Article
In-Situ Deposition of Plasmonic Gold Nanotriangles and Nanoprisms onto Layered Hydroxides for Full-Range Photocatalytic Response towards the Selective Reduction of p-Nitrophenol
by Javier Graus, Carlos J. Bueno-Alejo and Jose L. Hueso
Catalysts 2018, 8(9), 354; https://doi.org/10.3390/catal8090354 - 27 Aug 2018
Cited by 11 | Viewed by 3333
Abstract
In this work, we present photocatalysis as a greener alternative to conventional catalysis where harsh reaction conditions, temperature and/or pressure are needed. Photodegradation of organic pollutants is a cost-effective, eco-friendly solution for the decontamination of water and air, and is a field that [...] Read more.
In this work, we present photocatalysis as a greener alternative to conventional catalysis where harsh reaction conditions, temperature and/or pressure are needed. Photodegradation of organic pollutants is a cost-effective, eco-friendly solution for the decontamination of water and air, and is a field that has been continuously growing over the last decade. Plasmonic metal nanoparticles absorb light irradiation that is transferred to the chemical reaction in a different fashion. Furthermore, plasmonic nanostructures can be combined with other materials, such as semiconductors or a basic support, to create hybrid systems capable of overcoming certain challenges that photocatalysis is facing nowadays and to expand the photocatalytic response towards the whole visible-near infrared (Vis-NIR) ranges. The main objective of this work has been to in-situ synthesize plasmonic anisotropic gold nanoparticles onto hydrotalcite (HT) and calcined hydrotalcite (CHT) supports by way of a sequential deposition-reduction (DR) process and to evaluate their efficiency as heterogeneous catalysts towards the selective oxidation of p-nitrophenol (hereafter 4-NP), a well-known model contaminant, either in the absence or the presence of full-range light irradiation sources (LEDs) spanning the whole UV-Vis-NIR range. Special attention has been paid to the optimization of the catalyst preparation parameters, including the pH and the concentration of reducing and stabilizing agents. Interestingly, the use of thermally modified hydrotalcites has enabled a strong metal-support interaction to induce the preferential formation of triangular-shaped Au nanoparticles with ca. 0.8 wt.% loading while increasing the colloidal stability and surface area of the catalyst with respect to the commercial untreated HT supports. Full article
(This article belongs to the Special Issue Recent Advances on Carbon and Noble-Metal Based Photocatalysts)
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15 pages, 8005 KiB  
Article
A Simple Route in Fabricating Carbon-Modified Titania Films with Glucose and Their Visible-Light-Responsive Photocatalytic Activity
by Shih-Hsun Chen, Yu-Cheng Hsiao, Yu-Jia Chiu and Yao-Hsuan Tseng
Catalysts 2018, 8(5), 178; https://doi.org/10.3390/catal8050178 - 27 Apr 2018
Cited by 3 | Viewed by 3308
Abstract
Carbon-modified titania (C–TiO2) films were easily prepared by using an impregnation process with a glucose-containing TiO2 sol. Through controlling calcination conditions, the as-obtained C–TiO2 products exhibited highly photocatalytic activity for the degradation of gaseous NOx under visible light [...] Read more.
Carbon-modified titania (C–TiO2) films were easily prepared by using an impregnation process with a glucose-containing TiO2 sol. Through controlling calcination conditions, the as-obtained C–TiO2 products exhibited highly photocatalytic activity for the degradation of gaseous NOx under visible light and ultraviolet illumination. The effects of carbon content and calcination temperature on the photocatalytic performances and their photochemical and physical properties were investigated. Carbonaceous species on the TiO2 surface enhanced the visible-light absorption of TiO2 films; however, an excessive amount of carbon on the TiO2 surface reduced its photocatalytic ability due to the serious coverage effect on active sites. The results show that a suitable glucose addition is about 50–100% of the weight of TiO2 content and the optimized calcination temperature is 300 °C, which leads to better photocatalytic activity under ultraviolet and visible- light irradiations. Accordingly, the simple-prepared C–TiO2 films functioned as visible-light-responsive catalysts, allowing for a feasible producing route for real applications. Full article
(This article belongs to the Special Issue Recent Advances on Carbon and Noble-Metal Based Photocatalysts)
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