Article
Nanoscience & Nanotechnology
Arpan Kumar Nayak, Thamizharasan Gopalakrishnan
Summary: This study demonstrates a facile sol-gel method to synthesize nanomaterials with different phases and crystal structures, which has remarkable importance for supercapacitors and solid-state supercapacitor devices, showing potential applications in energy storage devices.
ACS APPLIED NANO MATERIALS
(2022)
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)
Review
Chemistry, Physical
Daniel Alves Barcelos, Maria Clara Goncalves
Summary: Visible-light-photoactive titania micro- or nanoparticles have shown great potential in various industrial applications, especially in environmental remediation. The sol-gel method, with its simplicity, versatility, and green chemistry approach, has been successfully employed for synthesizing crystalline and amorphous TiO2 micro- and nanoparticles. This short review aims to discuss the recent advancements in visible-light-photoactive titania-based nanoparticles for environmental remediation. Co-doping of titania, titania composite design, and the use of amorphous networks have been the most commonly used strategies to achieve this goal. Finally, predictions about the future developments in these fields are provided.
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
Energy & Fuels
Tianfu Huang, Zehai Qiu, Zhibiao Hu, Xiaochun Lu
Summary: In this study, hierarchical porous CoFe2O4 was successfully fabricated and applied as electrode for supercapacitors, showing excellent electrochemical performance. The CoFe2O4 electrode demonstrated high specific capacitance and cycling stability, making it a promising candidate for supercapacitor electrodes.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
Changwei Lai, Xiaoxiao Qu, Huihui Zhao, Suck Won Hong, Kwan Lee
Summary: We developed a robust asymmetric supercapacitor with improved electrochemical performance and excellent long cycle life. Innovative hierarchical honeycomb-structured NiCo2O4 electrode materials were synthesized and utilized, along with 3D rGO-PPy aerogels as negative electrode materials. The resulting asymmetric supercapacitors demonstrated significant energy storage capability and cycling performance.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Electrical & Electronic
P. Prasannalakshmi, N. Shanmugam, A. Senthil Kumar, S. Suthakaran
Summary: This study presents a sol-gel route for fabricating TiO2/ZnS electrodes with various amounts of ZnS for supercapacitor applications. Different dosages of zinc and sulfide precursors were used and the electrochemical properties of the electrodes were evaluated. The results showed that the electrode with 0.25 M of zinc and 0.5 M of sulfide exhibited a large capacitance due to its increased surface area and low charge transfer resistance. The cycle stability test of the asymmetric capacitor (ASC) revealed a 5% dip in capacitance retention over 2000 cycles.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Physical
Xueying Dong, Yuting Yu, Xuyang Jing, Hanmei Jiang, Tao Hu, Changgong Meng, Chi Huang, Yifu Zhang
Summary: The study introduces a sandwich-like structure to improve the electrochemical properties of Co2SiO4, forming a 3D honeycomb structure which significantly enhances the specific capacitance and power performance.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Narthana Kandhasamy, Gopal Ramalingam, Govindhasamy Murugadoss, Manavalan Rajesh Kumar, Gunasekaran Manibalan, Rajabathar JothiRamalingam, Hemraj M. Yadav
Summary: The study successfully synthesized highly uniform copper and zinc oxide anchored nanoparticles on the surface of silica using a sol-gel method. Detailed structural and compositional analyses were carried out using X-ray diffraction, X-ray photoelectron spectroscopy, Laser Raman, field emission scanning electron microscopy, and transmission electron microscopy. The charge-discharge results showed excellent performance in specific capacitance at high current densities for the composite materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Hamnesh Mahajan, Shammi Kumar, Anjori Sharma, Ibrahim Mohammed, Manisha Thakur, Amarjeet Kaur, A. K. Srivastava
Summary: Sol-gel methodology was used to produce Mn0.3Co0.2Zn0.5Fe2O4 ferrite nanoparticles at different sintering temperatures. XRD, FTIR, FESEM, EDX, VSM, and electrochemical studies were conducted to analyze the properties of the synthesized specimens. The results showed the formation of spinel structure, agglomerated grains, stoichiometry confirmation, enhanced saturation magnetization with higher sintering temperature, and higher specific capacitance for Mn0.3Co0.2Zn0.5Fe2O4 (1150 degrees C).
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
X. Dong, Y. Zhang, X. Jing, Y. Wang, X. Chen, T. Hu, C. Meng
Summary: A novel honeymelon striated MnSiO3 coated on rGO sandwich-like structure (rGO@MnSiO3) has been developed to enhance the energy-storing capabilities of MnSiO3. The rGO@MnSiO3 electrode showed superior specific capacitance compared to other materials, demonstrating its potential for energy storage applications.
MATERIALS TODAY SUSTAINABILITY
(2021)
Article
Materials Science, Ceramics
Ruohong Sui, John H. Jacobs, Nancy Chou, Connor E. Deering, Christopher B. Lavery, Robert A. Marriott
Summary: Both affordability and stability are crucial for commercial-scale production and industrial applications of TiO2. This study investigated a facile sol-gel process using titanyl sulfate as a feedstock, which resulted in the stable formation of anatase phase with bimodal mesopores and macropores. These unique nanostructures make it suitable for catalysis and filtration applications.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Polymer Science
Arpaporn Teamsinsungvon, Chaiwat Ruksakulpiwat, Penphitcha Amonpattaratkit, Yupaporn Ruksakulpiwat
Summary: In this study, titania-silica oxides were prepared using the sol-gel technique, and the effects of pH and Ti/Si atomic ratio on the structural characteristics of these oxides were investigated. The results showed that altering the Ti/Si ratio under alkaline conditions resulted in more uniform and minimized agglomeration of the nanoparticles.
Article
Chemistry, Multidisciplinary
Sanya Khursheed, Rida Tehreem, Muhammad Awais, Dilshad Hussain, Muhammad Imran Malik, Young Sun Mok, Ghayas Uddin Siddiqui
Summary: The purpose of this study was to investigate the effect of photocatalytic degradation using nitrogen and tungsten co-doped titania (TiO2) nanoparticles, which are cost-effective and environmentally friendly. The synthesized nanoparticles were analyzed using various techniques, including spectroscopy, microscopy, and spectrometry. The co-doping of metal and non-metal enhanced the photocatalytic properties of the TiO2 nanoparticles, particularly in the visible region. This resulted in improved absorption of visible light and reduced recombination of electron-hole pairs, leading to accelerated photodegradation. The bandgap of the titania nanoparticles was reduced after efficient doping, enabling the photodegradation of malachite green under visible light illumination. The results of photocatalytic degradation were confirmed using spectroscopy and high-performance liquid chromatography coupled with mass spectrometry.
Article
Materials Science, Paper & Wood
Andrey Zdravkov, Maria Listratenko, Stanislav Gorbachev, Iraida Osovskaya, Andrey Kanaev, Nikolai Khimich
Summary: Cellulose is used as a template agent to structure anatase TiO2 particles, forming MCC-TiO2 composite photocatalyst with organic-inorganic structures preserved. Materials prepared in caproic acid solvent showed higher photocatalytic activity, explained by the complementary nature of organic and inorganic components.