Article
Engineering, Environmental
Marta Kowalkinska, Szymon Dudziak, Jakub Karczewski, Jacek Ryl, Grzegorz Trykowski, Anna Zielinska-Jurek
Summary: In this study, TiO2 nanostructures with different morphologies and crystal facets were successfully prepared using TiOF2 as a precursor, demonstrating varying photocatalytic activity and mineralization efficiency. The TiO2 octahedra exposing {101} facets exhibited the highest photoactivity and mineralization efficiency among the obtained nanostructures. Surface effects of the photocatalyst were identified as influencing factors in mineralization efficiency and photodegradation products formation.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Hagar Mandor, Nevine K. Amin, Ola Abdelwahab, El-Sayed Z. El-Ashtoukhy
Summary: N-doped ZnO beads and N-doped TiO2 beads were synthesized using a modified sol-gel technique and nitrogen doping method. These beads exhibited oxygen vacancy and nitrogen-to-oxygen acceptor defects, which could be activated by UV light for efficient pollutant degradation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Materials Science, Ceramics
Guifei Zhang, Shiyun Tang, Anjiang Tang
Summary: Bimetallic co-doped ordered mesoporous MxCey/(TiO2)(z)@SiO2 aerogel composites were prepared by the sol-gel combined with atmospheric pressure drying method. The catalysts showed good adsorption capacity and the doping of Y and Zn contributed to the highest catalytic performance, achieving a degradation rate of 98% under visible light.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Environmental Sciences
Moses T. Yilleng, Nancy Artioli, David Rooney, Haresh Manyar
Summary: Palladium@mesoporous titania core@shell nanoparticles with uniform size distribution were synthesized using a four-component microemulsion system. These nanoparticles showed good absorption in both UV and visible regions, indicating their visible-light activity, which was not present in pristine TiO2 P25. The prepared 2%Pd@mTiO2 nanoparticles exhibited better photocatalytic performance for phenol degradation in visible light compared to conventional TiO2 P25 and 0.5%Pd/TiO2 P25 catalysts. Furthermore, the 2%Pd@mTiO2 catalysts demonstrated higher stability and reusability, with very high and stable phenol degradation in continuous flow over 52 hours. This study highlights the potential application of these catalysts for phenol degradation and wastewater treatment.
Article
Environmental Sciences
Weiqin Sheng, Yongming Zhang, Kaixin Song, Junming Xu, Jun Wu, Bing Liu, Xueqin Zhao
Summary: In this study, a novel boron-doped titanium oxide-coated waste mussel shell composite was synthesized via hydrothermal method. It showed higher photocatalytic oxidation efficiency under visible irradiation and could be used for wastewater treatment.
WATER AIR AND SOIL POLLUTION
(2022)
Article
Environmental Sciences
Iqra Mahboob, Sumeer Shafique, Iqrash Shafiq, Parveen Akhter, Artem S. Belousov, Pau-Loke Show, Young -Kwon Park, Murid Hussain
Summary: This study developed a LaVO4/MCM-48 nanocomposite for the photocatalytic degradation of phenol, which exhibited excellent performance including increased light photon utilization and reduced recombination rate. The nanocomposite showed outstanding photodegradation performance of phenol in water under visible light, with good stability and recyclability.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Haimei Wu, Mengyuan Wang, Fang Jing, Derui Kong, Yifan Chen, Chunman Jia, Jianwei Li
Summary: Pillararene derivatives were used as functional molecules to explore photocatalysts and efficiently promoted hydrogen production from water. The optimized catalyst exhibited good activity and stability under visible light, opening up a new pathway for hydrogen production using visible light.
CHINESE CHEMICAL LETTERS
(2022)
Article
Chemistry, Physical
Xueqin Wang, Helong Xu, Xiaohang Luo, Ming Li, Man Dai, Qihui Chen, Hua Song
Summary: CeO2/TiO2 heterostructures were synthesized using a sol-gel technique, showing enhanced photodegradation performance and good stability for removing organic pollutants such as phenol in water. The heterojunction formed after coupling CeO2 with TiO2 improves adsorption properties, inhibits photogenic carriers recombination, and extends the optical response range, resulting in high degradation efficiency under UV-light irradiation. The catalysts also exhibited favorable cycle performances and recyclability with minimal decrease in degradation rate and leaching of Ce and Ti.
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Xueqin Wang, Ying Liu, Helong Xu, Man Dai, Peng Qiao, Wenyi Wang, Yanxiu Liu, Hua Song
Summary: Surface-decorated three-dimensional dendritic fibrous nanosilica (DFNS)/TiO2 materials were synthesized and studied for their potential applications in degrading organic pollutants. The DFNS/TiO2 catalysts exhibited unique fibrous morphologies, high specific surface areas, and excellent catalytic properties, with a first-order degradation rate constant of 0.0229 min(-1).
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Kankana Seal, Hirok Chaudhuri
Summary: Four different photocatalysts were synthesised using brookite enriched but mixed-phase mesoporous titania and the synthesis pH was optimised within 1.0-5.5 during the sample preparation. The study found that the synthesis pH greatly affected the nucleation, growth mechanism, and surface characteristics of the prepared samples, which in turn had a positive impact on photocatalytic reactions. The synthesized TiO2 with a pH of 5.5 showed high efficiency in degrading phenol, even outperforming single-phase anatase and P25.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Han Xie, Wen Zhang, Shengnan Gao, Jun Wang, Dongliang Zhang, Mitang Wang
Summary: In this study, Eu/F co-doped bismuth vanadate photocatalysts were prepared by a hydrothermal method, and their microscopic morphology, crystal structure, light absorption, and photocatalytic performance were investigated. The results showed that the Eu/F co-doped samples exhibited better photoactivity under UV-Vis light and had the best degradation effect on methylene blue under visible light irradiation.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Physical
Diego Alvarez-Bustos, Felipe Sanchez-Minero, Victor Santes, Issis Claudette Romero-Ibarra, Jose Antonio de los Reyes Heredia, Reyna Rios-Escobedo, Francisco Tzompantzi-Morales, Carlos Eduardo Santolalla-Vargas
Summary: The study evaluated the photocatalytic activity of FeS-2Cl/TiO2 catalyst on visible-light degradation of phenol, showing significantly improved degradation compared to unmodified TiO2.
Article
Materials Science, Multidisciplinary
Moorthy Padmini, T. Balaganapathi, Periyasamy Thilakan
Summary: Pure rutile phase of TiO2 nanocrystals were synthesized by tuning the chemical process, resulting in stabilized growth with high surface area and mesoporosity upon an increase in calcination temperatures. Photoluminescence and XPS studies revealed interesting findings such as intra-band levels and presence of Ti3+ ions on the highly porous R-TiO2.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Chemistry, Physical
Junlei Wang, Xueqin Wang, Qihui Chen, Helong Xu, Man Dai, Mei Zhang, Wenyi Wang, Hua Song
Summary: The microstructure of photocatalysts, such as hollow TiO2 spheres synthesized using RF polymer resin, plays a vital role in enhancing photocatalytic performance. Adjusting the concentration of ammonia during synthesis affects the micromorphology and photocatalytic properties of the TiO2 spheres. The high conductivity and surface area of the hollow TiO2 spheres contribute to their efficient photocatalytic performance in phenol decomposition.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Daichuan Ma, Xianying Han, Xinsheng Li, Daibing Luo
Summary: In this work, diclofenac removal in tap water was achieved using TiO2 nanotube growth on Ti mesh substrate assisted by ozone generated from a hole-arrayed boron-doped diamond (HABDD) film electrode. The enhanced degradation effect from ozone molecules on TiO2 photocatalysis was attributed to the larger active surface area, increased charge separation rate, and contact area of ozone. This synergetic system shows promise in the treatment of pharmaceuticals in water.
