Article
Chemistry, Applied
Xiurong Zhu, Lousia J. Hope-Weeks, Roya Baghi, Vanessa R. Charles, Yi Yu, Lingwei Zhu, Xinghua Wang, Dongbo Li, Xianghua Zeng
Summary: In this study, glycidol was used as a catalyst to synthesize RF aerogels and CAs, and their density, morphology, specific surface area, mechanical properties, and sol-gel mechanisms were investigated. The results showed that the RF aerogels and CAs synthesized had low density and high specific surface areas. The pristine CAs exhibited high mechanical properties even at low density.
JOURNAL OF POROUS MATERIALS
(2022)
Article
Polymer Science
Elisha Martin, Martin Prostredny, Ashleigh Fletcher
Summary: The study investigates the effects of catalysts on RF gel reactions by synthesizing and analyzing RF gels catalyzed by mixtures of different concentrations. Results suggest the significance of metal cations in RF gel reactions.
Article
Polymer Science
Stewart J. Taylor, Liu Yang, Ashleigh J. Fletcher
Summary: The role of cation species in the gelation processes of resorcinol-formaldehyde xerogels was investigated. The study found that the composition of the catalyst affected the stability of clusters formed in the system, leading to changes in pore size and distribution of the xerogels.
Article
Materials Science, Multidisciplinary
Damian E. Benito, M. Barbara Lombardi, Alberto N. Scian
Summary: A SiO2-C composite was synthesized via sol-gel method using industrial raw materials. The composite consisted of a silica network cross-linked with a carbon network, resulting in a material with sharp pore size distribution and high specific surface area. The carbon and silica networks were subsequently isolated. The synthesized composite and isolated structures were characterized using various techniques and found to exhibit properties suitable for catalysis, immobilization of bioactive molecules and dyes, drug delivery, among others. The carbonaceous network showed a pseudo graphene structure and microdomains of high activity, making it a promising low-cost material for wastewater treatment and drinking water purification in green technologies.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Polymer Science
Eva Kinnertova, Vaclav Slovak, Roman Marsalek, Martin Mucha
Summary: Different methods were used to study the kinetics and mechanism of resorcinol-formaldehyde (RF) condensation, yielding significantly different results and applicability. Fourier transform infrared spectroscopy (FTIR) can only track the changes in functional groups at the early stages of the reaction. Dynamic light scattering (DLS) can estimate the growth of particles in the reaction solution before it becomes more viscous. H-1 nuclear magnetic resonance relaxometry (H-1-NMR) provides insights into the properties of water present in the polymeric gel during RF condensation. Differential scanning calorimetry (DSC) measurement of the freezing/melting behavior of the reaction mixture has the widest range of applicability. These findings can enhance our understanding of the mechanism of RF condensation.
Review
Chemistry, Physical
Grigory B. Veselov, Aleksey A. Vedyagin
Summary: This review provides an overview of the synthesis and structural tuning strategies of carbon xerogels, including the influence of sol-gel synthesis conditions, the possibility of using different precursors for organic aerogel preparation, optimization of gel drying and pyrolysis conditions, and surface modification of carbon xerogels by introducing various functional groups and heteroatoms. Furthermore, the methods for preparing metal-doped carbon xerogels and their potential applications are briefly mentioned.
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
Biochemistry & Molecular Biology
Danyal Naseer, Jang-Hoon Ha, Jongman Lee, Chanhyuk Park, In-Hyuck Song
Summary: In this study, a high-performance mesoporous alpha-alumina membrane was successfully fabricated using the sol-gel method. The surface properties of the membrane were improved and the membrane achieved the smallest reported pore size for pure alpha-alumina membranes.
Article
Chemistry, Physical
Andrea Doman, Bekassyl Battalgazy, Gabor Dobos, Gabor Kiss, Zhandos Tauanov, Krisztina Laszlo, Antonis A. Zorpas, Vassilis J. Inglezakis
Summary: The adsorption technique is widely used in water purification, and this research focuses on the iodide removal performance of two high-surface-area carbon aerogels. The results show that both aerogels have outstanding adsorption capacity and their surface chemistry plays a distinct role in the removal. The study also found that the kinetics of iodide removal followed a first-order reaction with different half-lives for each aerogel.
Article
Materials Science, Ceramics
Lu Qingyang, Zhang Yuting, Gu Xuehong
Summary: This study investigates the preparation of hollow fiber supported TiO2 UF membranes using ultrasound-assisted Sol-Gel method. The results show that under specific conditions, the TiO2 membranes exhibit high pure water flux and good rejection performance.
JOURNAL OF INORGANIC MATERIALS
(2022)
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
Materials Science, Ceramics
Tayebeh Mohammadlou, Ali Akbar Babaluo, Ali Baradar Khoshfetrat
Summary: The study utilized the sol-gel process to fabricate mesoporous gamma-alumina membranes, adjusting the sol viscosity by manipulating the H+Al3+ ratio and adding PEG. The membranes exhibited satisfactory performance in water permeability, PEG rejection, and whey protein purification.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Ayten Ates
Summary: TiO2 samples with different crystal sizes and compositions were synthesized using a sol-gel method at different calcination temperatures. Increasing calcination temperature and SCW gasification/SCW treatment decreased the surface area of anatase TiO2 due to growing crystallite size. Among anatase and rutile TiO2 samples, optimal materials for hydrogen formation from formaldehyde in SCW were found. An increase in CO2 formation in the presence of anatase TiO2 was observed compared to rutile TiO2 due to active lattice oxygen species.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Sangho Yu, Hideaki Sano, Guobin Zheng
Summary: The introduction of sulfonic acid group into resorcinol-formaldehyde microspheres enhanced the formation of mesopores in carbon microspheres, resulting in a high specific capacitance of synthesized mesoporous carbon in WIS electrolyte-based supercapacitor. The mesoporous carbon/graphite electrode exhibited superior energy and power density in new-generation high-voltage supercapacitor using WIS electrolyte.
Article
Materials Science, Multidisciplinary
Fahimeh Sharifi, Zahra Mahmoodi, Saloumeh Mesgari Abbasi, Abolhassan Najafi, Gholamreza Khalaj
Summary: Titanium carbide nanopowders and nanowhiskers were synthesized using the sol-gel process with phenolic resin and titanium alkoxide as precursors. The synthesis temperature and soaking time were found to affect the free carbon content and the formation and morphology of TiC nanopowders. Nucleation of titanium carbide occurred at approximately 1200 degrees C and ended at 1400 degrees C. The synthesized nanopowders had mesoporous structure with a specific surface area of 150 m2/g, and TiC nanowhiskers heterogeneously nucleated and grew in a soaking time of 3 h. The free carbon content in the synthesized product under 3 h soaking time was less than 1%.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Biotechnology & Applied Microbiology
Guotong Qin, Xueqian Lu, Wei Wei, Jiajia Li, Ruyue Cui, Shixuan Hu
FOOD AND BIOPRODUCTS PROCESSING
(2015)
Article
Materials Science, Multidisciplinary
Guotong Qin, Yupei Zhang, Wei Wei
Article
Engineering, Chemical
Guotong Qin, Xiaofen Cao, Hua Wen, Wei Wei, Joao C. Diniz da Costa
SEPARATION AND PURIFICATION TECHNOLOGY
(2017)
Article
Food Science & Technology
Hui Sun, Qiang Lin, Wei Wei, Guotong Qin
FOOD SCIENCE AND BIOTECHNOLOGY
(2018)
Article
Biochemical Research Methods
Guotong Qin, Jing Ma, Wei Wei, Jaja Li, Fangqing Yue
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
(2018)
Article
Green & Sustainable Science & Technology
Jing Ma, Guotong Qin, Yupei Zhang, Junmin Sun, Shuli Wang, Lei Jiang
JOURNAL OF CLEANER PRODUCTION
(2018)
Article
Chemistry, Physical
Dandan Sun, Guotong Qin, Miao Lu, Wei Wei, Nu Wang, Lei Jiang
Article
Engineering, Chemical
Jing Fang, Guotong Qin, Wei Wei, Xinqing Zhao, Lei Jiang
Article
Chemistry, Applied
Xiang Li, Guotong Qin, Yatao Wang, Wei Wei
JOURNAL OF POROUS MATERIALS
(2014)
Article
Materials Science, Ceramics
Xiang Li, Guotong Qin, Yatao Wang, Wei Wei
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2014)
Article
Chemistry, Multidisciplinary
Jing Ma, Guotong Qin, Wei Wei, Tianliang Xiao, Shaomin Liu, Lei Jiang
Proceedings Paper
Energy & Fuels
Shuli Wang, Guotong Qin, Wei Wei
ENERGY AND ENVIRONMENT MATERIALS
(2013)
Proceedings Paper
Energy & Fuels
Miao Lv, Guotong Qin, Wei Wei
ENERGY AND ENVIRONMENT MATERIALS
(2013)
Proceedings Paper
Energy & Fuels
Panqiao Duan, Guotong Qin, Wei Wei
ENERGY AND ENVIRONMENT MATERIALS
(2013)