Article
Chemistry, Multidisciplinary
Su Jin Kim, Eun Mi Kim, Hee Kyung Jeon, Shital Bhaskar Kale, Jeong Yeon Choi, Jin Hyeok Kim
Summary: In this study, a TiO2-alumina photocatalyst was manufactured and tested for the photolysis and conversion of acetaldehyde. The results showed that decreasing the flow rate, increasing the moisture level, and decreasing the ultraviolet wavelength increased the conversion rate of acetaldehyde. Among the heat-treatment temperatures used, the catalyst treated at 650 degrees C had the highest conversion rate. This newly manufactured TiO2-alumina photocatalyst has potential applications in air purification, and the surface treatment method demonstrated in this study can be used to fabricate other environmentally friendly materials in the future.
APPLIED SCIENCES-BASEL
(2022)
Article
Polymer Science
Humberto Alejandro Monreal Romero, Teresa Perez Pinon, Diana Sagarnaga, Raquel Duarte Rico, Alfredo Nevarez Rascon, Carlos Alberto Martinez Perez, Dagoberto Perez Pinon, Juan Pablo Flores de los Rios, Mario Sanchez Carrillo, Jose Guadalupe Chacon-Nava
Summary: In this study, titanium dioxide scaffolds were successfully synthesized using the sol-gel method. The scaffolds were formed by using titanium isopropoxide as a precursor and a polymeric network of galactopyranose as a template. The synthesized scaffolds have diameters of 50 nm and porosity ranging from 0.3 to 10 nm. XRD analysis confirmed the formation of crystalline phases in the TiO2 scaffold at 700 degrees C. The use of biological polymers as templates provides a low-cost and efficient approach for the synthesis of new materials.
Review
Chemistry, Multidisciplinary
Cheng Chang, Saeed Rad, Lei Gan, Zitao Li, Junfeng Dai, Asfandyar Shahab
Summary: This review provides a comprehensive overview of the chemicals, reaction conditions, and procedures required for preparing nano TiO2 using the sol-gel method. It analyzes the influencing factors and their impact on the final product. This information is essential for controlling the properties of the resulting TiO2 gel/powder for targeted applications.
NANOTECHNOLOGY REVIEWS
(2023)
Article
Environmental Sciences
Zhuohong Cong, Liang Zhou, Nanxiang Zheng, Taiwo Sesay
Summary: In this study, copper aluminate nanoparticles (CuAl2O4) were synthesized using the sol-gel method and validated for their structure, morphology, and optical properties. The CuAl2O4 powder exhibited a particle size of 20-37 nm and a spinel-type structure. With a band gap of 1.50 eV, the CuAl2O4 nanoparticles showed potential for effective visible-light degradation. Further analysis on the photocatalytic performance revealed that fluorescent light irradiation with CuAl2O4 nanoparticles calcined at 700 degrees C yielded the best results in degrading vehicle emissions (CO, HC, and NO).
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Masoud Emami Mehr, Hossein Maleki-Ghaleh, Mohadeseh Yarahmadi, Majid Kavanlouei, M. Hossein Siadati
Summary: In this study, core/shell ZnO/TiO2 nanocomposite samples were prepared using the sol-gel method at different time spans. The sample prepared in the 15-minute time span (ZnTi15) exhibited the highest photocatalytic activity and charge carrier density, making it the optimal sample. The formation of a heterojunction at the ZnO/TiO2 interface could be attributed to the increased photocurrent density observed for the ZnTi15 sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Wenjing Liu, Bin Wang, Minghui Zhang
Summary: The visible-light-driven photocatalytic regeneration performance of TiO2-loaded activated carbon (TiO2/AC) was effectively improved by controlling activation conditions, treatment variables, etc. The study shows that various factors have important influences on the adsorption and regeneration performance of the samples.
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
Environmental Sciences
Huijuan Li, Yeting Yao, Xiaoyan Yang, Xusheng Zhou, Ran Lei, Sufang He
Summary: This study prepared composites of titanium (IV) oxide combined with montmorillonite (MMT) for photocatalysis application. The immobilization of TiO2 nanoparticles on MMT decreased their average size and enhanced the photocatalytic activity. The phenol degradation process was determined by HPLC, showing the conversion of phenol into maleic acid, carbon dioxide, and small molecules.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Kamol Dey, Sonalika Vaidya, Anna Gobetti, Giorgio Ramorino, Ashok K. Ganguli
Summary: Undoped and N-doped TiO2 anatase/brookite mixed-phase nanoparticles were synthesized via a sol-gel method using urea as a nitrogen source. Nitrogen played a dual role in doping and controlling the anatase and brookite phases in the nanoparticles. N-doped anatase/brookite mixed-phase nanoparticles exhibited superior photocatalytic activity in degrading rhodamine-B under simulated visible light irradiation.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Kai Ti Low, Fong Kwong Yam, Khi Poay Beh, Asrulnizam Abd Manaf, Khi Khim Beh
Summary: In this study, TiO2 nanoparticles were synthesized using a modified sol-gel method and showed significant reduction in particle size. A UV photodetector fabricated from TiO2 on an FR-4 board demonstrated remarkable stability, high sensitivity, and potential application in UV photodetection domain. The photodetector exhibited high sensitivity and responsivity under UV-A illumination, with optimum operating potential at a bias of 3 V.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Materials Science, Multidisciplinary
Valentina Prusakova, Giovanni Giusti, Cristian Collini, Giancarlo Pepponi, Mario Barozzi, Leandro Lorenzelli, Salvatore Iannotta, Roberto Verucchi, Sandra Dire
Summary: This study investigates the resistive switching properties of metal oxide thin films and proposes an innovative approach to improve the fabrication of memristive devices. A comparison of TiO2 thin films produced by different methods demonstrates an enhancement of memristive properties and reduction of electrical shorts in TiO2 based devices.
Article
Optics
Vijay Singh, Sumandeep Kaur, Arti Yadav, A. S. Rao
Summary: A series of calcium aluminate phosphors doped with Tm3+ ions at various molar concentrations were prepared via sol-gel route. Various characterizations were conducted to identify the structural and luminescence properties. The prepared phosphors exhibited excellent blue emission under n-UV excitation, making them potentially suitable for application as blue emitters in white LEDs.
Article
Engineering, Electrical & Electronic
Ziao Xu, Yanan Zhu, Zengyuan Pang, Mingqiao Ge
Summary: A Sn-Al co-doped ZnO coated TiO2 whisker was successfully synthesized and modified for improved electrical conductivity, showing a core-shell structure and low resistivity. These conductive whiskers can be used to prepare antistatic fibers and coating fabrics.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Chemistry, Physical
Satya Veer Singh, Urwashi Gupta, Sajal Biring, Bratindranath Mukherjee, Bhola N. Pal
Summary: A nanoscale heterojunction thin film of Cu2S-TiO2 has been grown using sol-gel technique and employed for efficient H-2 production. The photoelectrochemical performance of this Cu2S-TiO2 heterojunction thin film was studied and it showed significantly higher photocurrent compared to previous Cu2S (NP)-TiO2 nanocomposite photoanodes, attributed to reduced carrier recombination at the Cu2S-TiO2 interface.
SURFACES AND INTERFACES
(2022)
Article
Environmental Sciences
Smitha Venu Sreekala, Athulya Parola, Vimala Thayumani, Harikumar Puthenveedu Sadasivan Pillai, Resmi Thoppil Ramakrishnan
Summary: In this study, silver and nitrogen-doped titanium dioxide coated chitosan nanocomposites were successfully synthesized and applied for the reduction of nitrates in water through adsorption and photocatalysis. The drying conditions of the nanocomposite beads were found to significantly affect their adsorption and photocatalytic efficiencies. The nanocomposite beads demonstrated high nitrate reduction efficiency and promising results in both continuous flow adsorption cum photocatalysis experiment and fixed-bed column adsorption experiment, indicating their potential for nitrate reduction from water and wastewater.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
