Article
Chemistry, Physical
Lu He, Dietrich R. T. Zahn, Teresa I. I. Madeira
Summary: Titanium dioxide (TiO2) thin films have photocatalytic properties and can be used for recycling and maintenance. Factors affecting their performance include nanocrystalline size, surface morphology, and phase composition, which need to be better studied and correlated.
Article
Chemistry, Physical
Almudena Aguinaco, Jose M. Manuel, Eduardo Blanco, Manuel Dominguez, Rocio Litran, Juan J. Delgado, Milagrosa Ramirez-del-Solar
Summary: The optical properties of 5wt% Fe3O4-TiO2 thin films were evaluated in detail in this study. The results showed that the incorporation of 5wt% Fe3O4 improved the optical properties and enhanced the separation efficiency of photoexcited electron-hole pairs in the photocatalyst. The study also proposed a mechanism for solar photocatalytic processes based on experimental results.
Article
Materials Science, Ceramics
Ryosuke Hamano, Hiromitsu Kozuka
Summary: We fabricated polycrystalline titania thin films on polycarbonate substrates using a sol-gel transfer technique. The films were converted from titania gel films deposited on a Si(100) substrate to polycrystalline titania thin films through firing at various temperatures. The films showed different crystalline phases and improved mechanical flexibility with increasing porosity.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
C. Gomez-Polo, S. Larumbe, A. Gil, D. Munoz, L. Rodriguez Fernandez, L. Fernandez Barquin, A. Garcia-Prieto, M. L. Fdez-Gubieda, A. Muela
Summary: The study investigates the effects of Cr and N doping on the properties of TiO2 anatase nanoparticles, including adsorption capacity, photocatalytic performance, and antibacterial response. Doping with Cr and Cr/N enhances adsorption capacity and photocatalytic performance, with Cr-TiO2 nanoparticles exhibiting antibacterial activity under visible light. The differences in electrostatic charge and nanoparticle dispersion are suggested as the main reasons for the varied antibacterial response among the doped nanoparticles.
SURFACES AND INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
K. Jeeva Jothi, S. Balachandran, K. Palanivelu
Summary: The synergy between leaf extract and metals enhances the catalytic properties of nanoparticles, allowing for a simple and green synthesis of silver metallic nanoparticles. The environmentally friendly approach offers advantages such as biocompatibility, production control, chemical and thermal robustness, and cost-effectiveness. The biosynthesized silver nanoparticles, prepared using harmless Phyllanthusniruri leaf extract, were incorporated into a sol-gel matrix and coated onto stainless steel 304, resulting in corrosion-resistant and bacterial resistant hybrid coatings. The coatings showed improved anti-corrosion and anti-bacterial properties compared to unmodified sol-gel coated films.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Biochemistry & Molecular Biology
Raquel Trujillano, Vicente Rives, Ines Garcia
Summary: Two titania photocatalysts were prepared using the sol-gel method with TiCl4 as a precursor and either ethanol or propanol as solvents. The study aimed to investigate the effect of the solvent on the chemical, structural, and photocatalytic properties of the final solids for paracetamol degradation. The results showed that the choice of solvent significantly influenced the characteristics and catalytic activity of the synthesized oxides.
Article
Materials Science, Ceramics
Yu-Xuan Li, Ping Li, Yu-Zhe Wu, Zhen-Liang Xu, Ming-Ling Huang
Summary: A novel TiO2 thin film was prepared on ceramic hollow fibers using sol-gel method with PVP and PVA as additives. The effects of different PVP and PVA contents on the properties of TiO2 sol and the performance of ultrafiltration membranes were thoroughly investigated. The membrane with 1.0 wt% PVP and 0.8 wt% PVA showed superior separation performance and antifouling properties.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Xinxing Hao, Zhe Zhu, Zhonghua Yao, Hua Hao, Minghe Cao, Hanxing Liu
Summary: This study investigates the effect of polarization difference on the energy storage density of dielectric materials and finds that excess Ti can optimize the dielectric characteristics. The study also highlights the importance of polarization difference in achieving high energy storage density in electrostatic dielectric capacitors.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Manh-Cuong Le, Thu-Huong Le, Thanh-Huyen Bui Thi, Quang-Dat Nguyen, Thanh-Ha Do Thi, Minh-Nguyet Tran Thi
Summary: The addition of SiO2 in the TiO2/SiO2 nanocomposite significantly enhances the photocatalytic and antibacterial abilities of the silicate coating, with the best performance observed at a SiO2 content of 15%. This is attributed to the larger surface area provided by TiO2/SiO2 Nc (15%) in the W silicate coating, which increases centers for absorption, photocatalytic reactions, and contact between the sample and bacteria.
FRONTIERS IN CHEMISTRY
(2021)
Article
Environmental Sciences
Rohit Jasrotia, Jyoti Prakash, Gagan Kumar, Ritesh Verma, Swati Kumari, Sachin Kumar, Virender Pratap Singh, Ashok K. Nadda, Susheel Kalia
Summary: This study aims to manufacture Ce3+/Ni2+ ions doped Mg nanoferrites by the sol-gel method for the photocatalytic degradation of rhodamine B and crystal violet pollutants under visible natural sunlight. The synthesized nanoferrites showed good photocatalytic activity and antibacterial properties, making them potential candidates for the treatment of organic dyes and bacterial infections.
Article
Materials Science, Ceramics
Bongho Jang, Jaewon Jang, Jae Eun Jang, Hyuk-Jun Kwon
Summary: This study fabricated high-performance SnO2 thin-film transistors (TFTs) at temperatures below 300 degrees C using the combustion-assisted sol-gel method. The results showed that the combustion-assisted solution process significantly increased the field-effect mobility of SnO2 TFTs compared to the conventional solution process, potentially enabling low-cost solution-processed electronics.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Alesh Kumar, Ashwani Mittal, Avik Das, Debasis Sen, C. R. Mariappan
Summary: Improved electroactive mesoporous Ag-doped bio-ceramics were developed for medical purposes, showing varying antibacterial effects and electrical conductivity depending on silver concentrations.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Borbala Tegze, Emoke Albert, Boglarka Diko, Norbert Nagy, Adel Racz, Gyorgy Safran, Attila Sulyok, Zoltan Horvolgyi
Summary: In this study, mesoporous TiO2 sol-gel coatings were modified with silver using two methods, and the effects of silver modification on the functional properties were investigated. The samples made with the impregnation method showed better functional properties despite having significantly lower silver content. The pore structure influenced the Ag content achieved by the impregnation method, and subsequently affected their photoactivity.
Article
Chemistry, Physical
Adil Alshoaibi, Shumaila Islam
Summary: Sol-gel-based titania nanoparticles, Silica-titania nanocomposite, and zinc supported silica-titania nanocomposites were synthesized at low temperature. The study showed that zinc nanoparticles were homogeneously distributed in the silica-titania nanocomposite, and the doping of zinc enhanced the photocatalytic activity of the material.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Shumaila Islam, Adil Alshoaibi, Hazri Bakhtiar, Kawther Alamer, Javed Mazher, Zakia Hassan Alhashem, Mohammad Rafe Hatshan, Shrouq H. Aleithan
Summary: Due to polluted water remediation, semiconductor nano photocatalysis has been considered as a promising approach to address the issue. However, the slow reaction rates and high electron-hole recombination have hindered their large-scale applications. In this study, heterogeneous nano photocatalysts, such as sol-gel-based mesoporous titania nanoparticles (TNPs) and silica-titania nanocomposite (STNC) supported with CdTe (CdTe/STNC), were synthesized for photocatalytic applications. The CdTe/STNC catalyst exhibited a large surface area and pore size distribution, and demonstrated high photocatalytic activity with methylene blue degradation of 95% after 180 min of ultraviolet radiation.
MATERIALS RESEARCH BULLETIN
(2023)