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Catalysts
Special Issues
Photocatalysis and Renewable Materials
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Photocatalysis and Renewable Materials

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

Deadline for manuscript submissions: closed (31 January 2022) | Viewed by 9397

Special Issue Editors

Dr. Daniele Dondi

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Guest Editor
Department of Chemistry, University of Pavia, 27100 Pavia, Italy
Interests: material characterization; nanomaterials synthesis; organic synthesis; catalyst photocatalysis; green chemistry; wastewater treatment; renewable resources; 3D printing; organic green material synthesis
Special Issues, Collections and Topics in MDPI journals
Dr. Dhanalakshmi Vadivel

E-Mail Website
Guest Editor
Department of Chemistry, University of Pavia, 27100 Pavia, Italy
Interests: carbon materials; photochemistry; renewable materials; cancer biology
Special Issues, Collections and Topics in MDPI journals
Dr. Andrea Speltini

E-Mail Website
Guest Editor
Department of Chemistry, University of Pavia, 27100 Pavia, Italy
Interests: environmental analysis; emerging pollutants; carbon materials; sample treatment; renewable energy; photocatalysis; green hydrogen production
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Modern science can no longer do without taking into consideration the protection of the environment and the intelligent use of natural resources. From this point of view, photocatalysis is an excellent candidate to be included in sustainable chemistry. The use of renewable materials, both directly for the preparation of the catalyst or indirectly for the fuel production or depollution, united to the possible use of solar light, is the main purpose of this Special Issue.Topics can include (but are not limited to):- Fuel production (i.e. hydrogen) from renewable resources;- Sustainable (hybrid) photocatalysts;- Nano and nanostructured materials;- Photocatalytic water treatment and renewable energy applications;- Photocatalytic water oxidation and reduction assisted by waste sacrificial donors;- Photocatalytic CO2 reduction into renewable fuels. 

Prof. Daniele Dondi
Dr. Dhanalakshmi Vadivel
Dr. Andrea Speltini
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

  • Catalysts
  • Photocatalysis
  • Photocatalytic hydrogen and fuel production
  • Photocatalytic industrial waste treatment
  • Photocatalytic wastewater treatment
  • Catalyst preparation and characterization from renewables
  • Fuel production from renewable materials

Related Special Issue

Published Papers (3 papers)

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Research

12 pages, 3014 KiB  
Article
Tungsten Catalysts for Visible Light Driven Ofloxacin Photocatalytic Degradation and Hydrogen Production
by Dhanalakshmi Vadivel, Michela Sturini, Andrea Speltini and Daniele Dondi
Catalysts 2022, 12(3), 310; https://doi.org/10.3390/catal12030310 - 09 Mar 2022
Cited by 3 | Viewed by 2409
Abstract
Some tungsten catalysts of interest that are synthesized are bismuth tungstate (BT) and Tetrabutylammonium decatungstate (TBADT), using two consolidated procedures. BT is used as a photo-catalyst for the simulated solar light degradation of ofloxacin (OFL) antibiotic under relevant real conditions (µg L−1 [...] Read more.
Some tungsten catalysts of interest that are synthesized are bismuth tungstate (BT) and Tetrabutylammonium decatungstate (TBADT), using two consolidated procedures. BT is used as a photo-catalyst for the simulated solar light degradation of ofloxacin (OFL) antibiotic under relevant real conditions (µg L−1, fresh water) with the limit of 0.05 g L−1 of catalyst. A quantitative drug decomposition occurred following a bi-exponential first-order law, with an efficiency comparable with the most used P25 TiO2 catalyst. The photocatalytic profiles of OFL at µg L−1 and mg L−1 were monitored by high-pressure liquid chromatography (HPLC) coupled with fluorescence (FD) and ultraviolet (UV) detectors. Additionally, the main photoproducts were identified by high-pressure liquid chromatography coupled to electrospray ionization in tandem with mass spectrometry (HPLC-ESI-MS/MS). The catalyst Tetrabutylammonium decatungstate (TBADT) was used as a catalyst to produce hydrogen from glucose and 2-propanol in aqueous solution, providing hydrogen gas evolution up to 10 µmol g−1 h−1. Full article
(This article belongs to the Special Issue Photocatalysis and Renewable Materials)
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22 pages, 4635 KiB  
Article
Natural Sunlight Driven Photocatalytic Removal of Toxic Textile Dyes in Water Using B-Doped ZnO/TiO2 Nanocomposites
by Romana Akter Shathy, Shahriar Atik Fahim, Mithun Sarker, Md. Saiful Quddus, Mohammad Moniruzzaman, Shah Md. Masum and Md. Ashraful Islam Molla
Catalysts 2022, 12(3), 308; https://doi.org/10.3390/catal12030308 - 09 Mar 2022
Cited by 31 | Viewed by 3868
Abstract
A novel B-doped ZnO/TiO2 (B–ZnO/TiO2) nanocomposite photocatalyst was prepared using a mechanochemical–calcination method. For the characterization of the synthesized B–ZnO/TiO2 photocatalyst, XRD, FESEM-EDS, FTIR, UV-Vis DRS, BET, PL, and XPS techniques were used. The bandgap energy of B–ZnO/TiO2 [...] Read more.
A novel B-doped ZnO/TiO2 (B–ZnO/TiO2) nanocomposite photocatalyst was prepared using a mechanochemical–calcination method. For the characterization of the synthesized B–ZnO/TiO2 photocatalyst, XRD, FESEM-EDS, FTIR, UV-Vis DRS, BET, PL, and XPS techniques were used. The bandgap energy of B–ZnO/TiO2 was reduced, resulting in enhanced visible-light absorption. Significant PL quenching confirmed the reduction in the electron–hole recombination rate. Furthermore, reduced crystallite size and a larger surface area were obtained. Hence, the B–ZnO/TiO2 photocatalyst exhibited better photocatalytic activity than commercial TiO2, ZnO, B–ZnO, and ZnO/TiO2 in the removal of methylene blue (MB) dye under natural sunlight irradiation. The effects of various parameters, such as initial concentration, photocatalyst amount, solution pH, and irradiation time, were studied. Under optimal conditions (MB concentration of 15 mg/L, pH 11, B–ZnO/TiO2 amount of 30 mg, and 15 min of operation), a maximum MB removal efficiency of ~95% was obtained. A plausible photocatalytic degradation mechanism of MB with B–ZnO/TiO2 was estimated from the scavenger test, and it was observed that the •O2− and •OH radicals were potential active species for the MB degradation. Cyclic experiments indicated the high stability and reusability of B–ZnO/TiO2, which confirmed that it can be an economical and environmentally friendly photocatalyst. Full article
(This article belongs to the Special Issue Photocatalysis and Renewable Materials)
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13 pages, 4452 KiB  
Article
Photocatalytic Hydrogen Production from Urine Using Sr-Doped TiO2 Photocatalyst with Subsequent Phosphorus Recovery via Struvite Crystallization
by Oranoot Sittipunsakda, Patiya Kemacheevakul, Navadol Laosiripojana and Surawut Chuangchote
Catalysts 2021, 11(8), 1012; https://doi.org/10.3390/catal11081012 - 22 Aug 2021
Viewed by 2280
Abstract
Currently, the discharge of wastewater and utilization of phosphorus (P) in human activities cause some environmental problems, such as high organic pollutants in aquatic environments which results in dirty water sources, and a shortage of phosphate rock reserves due to the high demand [...] Read more.
Currently, the discharge of wastewater and utilization of phosphorus (P) in human activities cause some environmental problems, such as high organic pollutants in aquatic environments which results in dirty water sources, and a shortage of phosphate rock reserves due to the high demand of P. Therefore, fuel energy and struvite crystallization from waste sources can be considered interesting alternatives. In this work, the modified catalyst for hydrogen production, along with solving environmental problems, was examined. The strontium (Sr) doped-titanium dioxide (TiO2) nanoparticles were synthesized by wetness impregnation method. The synthesized catalyst was characterized using UV-vis spectroscopy (UV-vis), photoluminescence (PL), X-ray diffraction (XRD), photoluminescence (PL), and scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS). The Sr-doped TiO2 catalysts had been utilized as the photocatalyst for the hydrogen production from synthetic human urine (a representative of waste source). The doping content of Sr in TiO2 varied from 0.5, 1, 2, and 4%, and the photocatalytic performances were compared with pristine TiO2 nanoparticles. The results showed that 1% Sr-doped TiO2 had the highest photocatalytic activity for hydrogen production and decreased the amount of chemical oxygen demand (COD) in the synthetic human urine. Subsequently, P could be recovered from the treated human urine in the form of struvite. Full article
(This article belongs to the Special Issue Photocatalysis and Renewable Materials)
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