Article
Materials Science, Ceramics
Ningna Bai, Xiangchun Liu, Zhengguang Li, Xinyu Ke, Kai Zhang, Qi Wu
Summary: TiO2/ZnO nanocomposites with different Ti/Zn ratios were successfully synthesized by sol-gel and hydrothermal methods, exhibiting excellent photocatalytic performance. The degradation rate of methylene blue by TiO2/ZnO nanocomposites with a Ti/Zn ratio of 2:1 was close to 100%, outperforming other samples. The improved catalytic performance was attributed to the ability to separate holes and electrons.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Thermodynamics
Jeanina Pandele-Cusu, Simona Petrescu, Silviu Preda, Gabriela Petcu, Madalina Ciobanu, Luminita Predoana
Summary: A comparative thermal analysis study was conducted on TiO2 system using TG/DTG/DTA and DSC. The results showed that microwave-assisted sol-gel method facilitated the amorphous-to-anatase transition in comparison with the sol-gel derived samples. The Ti-Bu-SG sample exhibited the highest photocatalytic activity towards the degradation of methyl orange.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Materials Science, Ceramics
Mohamed Achraf Bouabdellah, Itidel Belkadhi, Lassaad Ben Hammouda, Gwendoline Lafaye, Francisco Medina Cabello, Zouhaier Ksibi
Summary: W-La/CexZr1-xO2 catalysts with a Ce/Zr molar ratio of 1 exhibit the highest catalytic performance in the catalytic wet air oxidation of phenol. Catalysts prepared by precipitation or hydrothermal method show the best mineralization and Total Organic Carbon removal efficiency.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Coatings & Films
Reza Ahmadi, Abdollah Afshar
Summary: The study aimed to improve the biocompatibility and corrosion resistance of 316L SS metal implants by creating HAp/TiO2/Al2O3 nanocomposite coatings. Results showed that these coatings have good biocompatibility, adhesion strength, and corrosion resistance.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Chemistry, Applied
Miroslava Filip Edelmannova, Martin Reli, Peter Nadrah, Nejc Rozman, Rudolf Ricka, Andrijana Sever Skapin, Miha Nosan, Urska Lavrencic Stangar, Kamila Koci
Summary: This study aims to investigate the correlation between the structural properties of different TiO2 catalysts and their photocatalytic performance and selectivity in CO2 reduction at different pH levels. Two types of TiO2 catalysts were prepared and extensively characterized using various techniques. The prepared catalysts exhibited higher selectivity in CO2 reduction compared to a commercial P25 catalyst. The TiSG catalyst, which had the lowest portion of hydroxyl oxygen species, showed the highest photoreduction efficiency. The study also explored the effect of pH on the efficiency and selectivity of photocatalytic CO2 reduction, revealing different product distributions in acidic and basic environments.
Article
Engineering, Chemical
Siamak Dolatabadi, Moslem Fattahi, Mohammad Nabati
Summary: TiO2/ZnO nanostructures were synthesized by different methods to degrade Rhodamine B, and the key parameters affecting the catalyst performance were investigated. The catalyst was characterized, and optimal conditions for photocatalytic degradation were determined through experiments, resulting in excellent degradation performance.
DESALINATION AND WATER TREATMENT
(2021)
Article
Materials Science, Ceramics
Hugo Guimaraes Palhares, Eduardo Henrique Martins Nunes, Manuel Houmard
Summary: Most studies did not systematically evaluate textural and photocatalytic properties of TiO2-SiO2 composites. This work investigates the influence of heat treatment on the structural properties and photodegradation activity. Different prepared samples showed significant differences, but heat-treated samples had similar structures and properties, with some critical differences observed due to varying resistances to crystal growth.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Hamid Barkouch, Haad Bessbousse, Meryem Amar, Si Mohamed Bouzzine, Mohamed Hamidi, Moulay Abderrahim El Mhammedi, Ouafa Tahiri Alaoui
Summary: The sol-gel coprecipitation method is a convenient and affordable synthesis method for bismuth-doped TiO2 photocatalysts. Effective doping improves the photoactivity of the catalyst, enabling effective electron excitation under visible light. Different doping percentages of bismuth can modulate the photocatalytic response and provide engineered control over the semiconductor's bandgap energy. 5% doping provides the optimal balance of photocatalytic properties and effectiveness in treating the model organic pollutant indigo carmine (IC).
Article
Chemistry, Multidisciplinary
Zerin Yesil Acar, Meltem Asilturk
Summary: This study synthesized TiO2 nanoparticles through hydrolysis-condensation method and investigated the effects of water content and base types on the structure and surface properties of the particles. The results showed that water content affected particle crystalline phase and size, while base types influenced particle size and optical properties.
JOURNAL OF NANOPARTICLE RESEARCH
(2022)
Article
Biochemistry & Molecular Biology
Nasrollah Najibi Ilkhechi, Mahdi Mozammel, Ahmad Yari Khosroushahi
Summary: This study synthesized ZnO, TiO2, and ZnO-TiO2 nanoparticles using the sol-gel method, with ZnO-TiO2 showing higher antifungal activity against A. flavus. The nanostructures inhibited 100% of spore production at a concentration of 300 μg/mL. Additionally, ZnO-TiO2 nanoparticles exhibited both spherical and pyramidal shapes with grown particles on the surface.
PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
(2021)
Article
Materials Science, Ceramics
Shisheng Liu, Xiaohui Wei, Song Lin, Minjie Guo
Summary: This study focuses on preparing MgO nanoparticles with small sizes and high surface areas, optimizing the calcination conditions to achieve better degradation ability towards paraoxon pollutants. MgO nanoparticles obtained at 600 degrees Celsius had an average grain size of 8.7 +/- 3.2 nm and a surface area of 231.4 m^2/g, showing excellent performance in paraoxon degradation.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Hyun Soo Lee, Jae Hwan Yang, Hyun Ji Lee, Hyojin Lee, Sang-Chae Jeon
Summary: This study introduces a novel preparation method for synthesizing V2O5-TiO2 nanocatalysts to enhance desulfurization performance, resulting in increased specific surface area and improved interactions between V and Ti, leading to enhanced catalytic activities in the selective oxidation of H2S. The study emphasizes the importance of preparation conditions in manipulating the physicochemical properties and performances of catalysts.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Biochemistry & Molecular Biology
Md. Torikul Islam, Md. Nahid Parvez Roni, Md. Yunus Ali, Md. Robiul Islam, Md. Shamim Hossan, M. Habibur Rahman, A. A. S. Mostofa Zahid, Md. Nur E. Alam, Md. Abu Hanif, M. Shaheer Akhtar
Summary: This study found that titanium dioxide nanoparticles, prepared through sol-gel and hydrothermal synthetic routes, have specific degradation preferences for charged substrates. It indicates the potential for the selective degradation of specific organic pollutants, facilitating cost-effective effluent management.
Article
Materials Science, Ceramics
Shadpour Mallakpour, Mina Naghdi
Summary: A bone scaffold was fabricated using a hybrid of TiO2@LDH to leverage the advantages of both nanostructures, with LDH providing a suitable bed for TiO2 nanoparticles and Alg embedding them for stability. The scaffold showed excellent biomineralization and antibacterial properties, making it a promising candidate for bone tissue engineering.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Mohit Sahni, Sabyasachi Mukhopadhyay, R. M. Mehra, Sunil Chauhan, Prakash Chandra Sati, Manish Kumar, Munendra Singh, Naresh Kumar
Summary: Nanocrystalline particles of BiFO3 co-doped with ytterbium and cobalt were successfully synthesized and characterized using various techniques such as XRD and Raman spectroscopy. The substitution of Yb3+ and Co2+ ions in BFO samples improved the magnetic and photocatalytic properties. UV-Vis absorption spectroscopy revealed that all synthesized nanoparticles absorb light in the entire visible light wavelength range.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)