AI Article Synopsis
Article Abstract
In the present study, we investigated the influence of surface fluorine (F) on TiO for the photocatalytic oxidation (PCO) of toluene. TiO modified with different F content was prepared and tested. It was found that with the increasing of F content, the toluene conversion rate first increased and then decreased. However, CO mineralization efficiency showed the opposite trend. Based on the characterizations, we revealed that F substitutes the surface hydroxyl of TiO to form the structure of Ti-F. The presence of the appropriate amount of surface Ti-F on TiO greatly enhanced the separation of photogenerated carriers, which facilitated the generation of ·OH and promoted the activity for the PCO of toluene. It was further revealed that the increase of only ·OH promoted the conversion of toluene to ring-containing intermediates, causing the accumulation of intermediates and then conversely inhibited the ·OH generation, which led to the decrease of the CO mineralization efficiency. The above results could provide guidance for the rational design of photocatalysts for toluene oxidation.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jes.2023.04.035 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Nanoparticle-Doped Antibacterial and Antifungal Coatings.
Polymers (Basel)
January 2025
Department of Chemical Engineering, Dr B R Ambedkar National Institute of Technology, Jalandhar 144011, Punjab, India.
Antimicrobial polymeric coatings rely not only on their surface functionalities but also on nanoparticles (NPs). Antimicrobial coatings gain their properties from the addition of NPs into a polymeric matrix. NPs that have been used include metal-based NPs, metal oxide NPs, carbon-based nanomaterials, and organic NPs.
View Article and Find Full Text PDFFrom Anatase TiO Nano-Cuboids to Nano-Bipyramids: Influence of Particle Shape on the TiO Photocatalytic Degradation of Emerging Contaminants in Contrasted Water Matrices.
Molecules
January 2025
Departamento de Ingeniería Química y de Materiales, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain.
Water pollution, resulting from industrial effluents, agricultural runoff, and pharmaceutical residues, poses serious threats to ecosystems and human health, highlighting the need for innovative approaches to effective remediation, particularly for non-biodegradable emerging pollutants. This research work explores the influence of shape-controlled nanocrystalline titanium dioxide (TiO NC), synthesized by a simple hydrothermal method, on the photodegradation efficiency of three different classes of emerging environmental pollutants: phenol, pesticides (methomyl), and drugs (sodium diclofenac). Experiments were conducted to assess the influence of the water matrix on treatment efficiency by using ultrapure water and stormwater (basic) collected from an urban drainage system as matrices.
View Article and Find Full Text PDFEvaluation of Mechanochemically Prepared CePO∙HO Nanoparticles as UV Filter for Photoprotective Formulations.
Molecules
January 2025
Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, HR 10000 Zagreb, Croatia.
Rhabdophane, CePO∙HO, nanoparticles were prepared by mechanochemical synthesis with different durations and thoroughly characterized by various characterization techniques. X-ray diffraction analysis showed that the optimal synthesis duration was 15 min, since, in this case, pure rhabdophane is obtained, without traces of contamination by the vessel material. The size of the obtained nanoparticles, as determined from high-resolution transmission electron microscopy images, was around 5 nm.
View Article and Find Full Text PDFEnhanced Photocatalytic Oxidative Coupling of Methane over Metal-Loaded TiO Nanowires.
Molecules
January 2025
College of Computer Science and Cyber Security (Pilot Software College), Chengdu University of Technology, Chengdu 610059, China.
The photocatalytic oxidative coupling of methane (OCM) on metal-loaded one-dimensional TiO nanowires (TiO NWs) was performed. With metal loading, the electric and optical properties of TiO NWs were adjusted, contributing to the improvement of the activity and selectivity of the OCM reaction. In the photocatalytic OCM reaction, the 1.
View Article and Find Full Text PDFCarbon Nanosphere-Based TiO Double Inverse Opals.
Molecules
January 2025
Institute of Physical Metallurgy, Metal Forming and Nanotechnology, University of Miskolc, H-3515 Miskolc, Hungary.
Inverse opals (IOs) are intensively researched in the field of photocatalysis, since their optical properties can be fine-tuned by the initial nanosphere size and material. Another possible route for photonic crystal programming is to stack IOs with different pore sizes. Accordingly, single and double IOs were synthesized using vertical deposition and atomic layer deposition.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!