Article
Chemistry, Physical
Yan Chen, Yang Zeng, Chin-Te Hung, Zhenghao Zhang, Zirui Lv, Senchuan Huang, Yi Yang, Yupu Liu, Wei Li
Summary: In this study, hollow mesoporous Pt/WOxSiO2-TiO2 nanosphere catalysts with bi-functional interfaces were synthesized for efficient conversion of glycerol to 1,3-propanediol. The catalysts showed high selectivity and stability, delivering a favorable 1,3-PDO yield of 45.7%. This work provides a new strategy for the synthesis of catalysts with high selectivity, activity, and stability.
Article
Energy & Fuels
Linghui Qiao, Zhen Liu, Shiying Zhang
Summary: The Fe3O4@SiO2-SO3H magnetic solid acid showed high saturation magnetization and acid content, suitable for cellulose hydrolysis with a high glucose yield. It can be easily recycled and maintains its catalytic performance over multiple cycles.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Engineering, Environmental
Giovanni Pampararo, Gabriella Garbarino, Paola Riani, Vit Vykoukal, Guido Busca, Damien P. Debecker
Summary: Copper-based catalysts are commonly used in dehydrogenation reactions, but they are prone to deactivation by sintering and coke deposition. A promising alternative is the use of aerosol-assisted sol-gel method to prepare Cu-SiO2 catalysts with high metal dispersion. Compared to catalysts made by impregnation, the aerosol-made catalysts show better stability, higher ethanol conversions, and selectivity above 75% for acetaldehyde.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Green & Sustainable Science & Technology
Khadijeh Hooshyari, Samira Heydari, Hossein Beydaghi, Hamid Reza Rajabi
Summary: This study aims to improve the proton conductivity and fuel cell performance of polymer-based membranes by using specific nanoparticles. The produced membranes exhibit remarkable electrochemical and mechanical performances, achieving high proton conductivity and power density over a wide temperature range and demonstrating long lifetime. These nanocomposite membranes show potential application in fuel cells.
Article
Chemistry, Analytical
Dandan Deng, Xu Yang, Jinying An, Kai Zhang, Shen Lin, XiangChao Dong
Summary: The study synthesized a new material SiO2@TiO2@SC4A for identifying lysine and arginine methylation in peptides, with higher levels of methylation showing stronger interactions. It also demonstrated selective extraction of methylated peptides from histone trypsin digestion and nuclear extracts of HeLa cells using the material, showing its potential in enrichment and identification of lysine methylations.
Article
Chemistry, Applied
Na Sun, Jiaojiao Song, Qingmei Tao, Erjie Kan, Long Kuai
Summary: Photocatalysis using metal oxide semiconductors and solar energy is an attractive green method for converting organics. This study successfully achieved high-efficiency mesoporous TiO2 decorated with single atomic Pt, which improved reaction performance by constructing high-density single-atom reaction sites.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Thermodynamics
Soroush Soltani, Nasrin Khanian, Thomas Shean Yaw Choong, Nilofar Asim, Yue Zhao
Summary: The research aims to synthesize a mesoporous sulfonated GO@TiO2 catalyst for esterification of inexpensive acidic feedstocks, possessing both Bro center dot nsted and Lewis acid sites with desirable textural properties. The synthesized catalyst showed high stability for ten consecutive esterification reactions.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Chemistry, Physical
Ting Wang, Yao Li, Wen-Tao Wu, Yan-ling Zhang, Li-guang Wu, Hua-li Chen
Summary: The chiral-arranged TiO2-SiO2 mesoporous material, fabricated through a soft template route, exhibited helical-spherical depositions at low reaction temperature, introducing numerous oxygen vacancies and Ti-N bonds to significantly enhance visible-light response and photocatalytic performance. The material demonstrated high substantial visible-light-driven photocatalytic performance, with the optimal removal rate for rhodamine B exceeding 97% under visible light irradiation.
APPLIED SURFACE SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Liang Dan, Hui Wang, Xiaobao Yang, Jiangwen Liu, Liuzhang Ouyang, Min Zhu
Summary: This study demonstrates the significant improvement of hydrogen sorption performances of MgH2 by synthesizing Nb-doped TiO2 solid-solution-type catalysts. The catalyzed MgH2 is able to absorb 5% of H2 at room temperature for 20 seconds, release 6% of H2 at 225 degrees C within 12 minutes, and achieve complete dehydrogenation at 150 degrees C under a dynamic vacuum atmosphere. The success of solid solution-type catalysts in MgH2 provides a demonstration and inspiration for the development of high-performance catalysts and solid-state hydrogen storage materials.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Fatemeh Mohajer, Ghodsi Mohammadi Ziarani, Alireza Badiei, Leonid G. Voskressensky, Rafael Luque
Summary: Novel sulfonated mesoporous hybrid organic-inorganic catalyst SBA@Pr-3AP-SO3H, anchored to the pore walls of SBA-15, was synthesized through a series of reactions. It exhibited efficient performance in the synthesis of phenyl-[1,2,4]-triazolidines.
RESEARCH ON CHEMICAL INTERMEDIATES
(2022)
Article
Chemistry, Physical
Wibawa Hendra Saputera, Tze Hao Tan, Emma C. Lovell, Aditya Rawal, Kondo-Francois Aguey-Zinsou, Donia Friedmann, Rose Amal, Jason A. Scott
Summary: Binary TiO2/SiO2 oxides were synthesized as supports for a Pt catalyst, with varying mole ratios of silica. Increasing the TiO2 : SiO2 ratio led to changes in specific surface area, crystal structure, and defect sites, affecting the catalytic performance for formic acid oxidation under dark conditions and following UV light pre-treatment. The Pt/1TiO(2)-2SiO(2) catalyst exhibited the highest catalytic rate, attributed to the simultaneous presence of PtOads and defect sites following UV-light pre-treatment.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Alvise Vivian, Loraine Soumoy, Luca Fusaro, Pierre Louette, Alexandre Felten, Sonia Fiorilli, Damien P. Debecker, Carmela Aprile
Summary: Mesoporous Ga-silicates were prepared using a sustainable and continuous aerosol synthesis procedure, showing record activity in the synthesis of solketal. The materials displayed outstanding turnover frequencies and selectivity, outcompeting other reference metallosilicate catalysts reported in literature. The most active catalyst showed stability under the selected reaction conditions through multiple catalytic cycles.
JOURNAL OF CATALYSIS
(2021)
Article
Biochemistry & Molecular Biology
Cedric Decarpigny, Sebastien Noel, Ahmed Addad, Anne Ponchel, Eric Monflier, Rudina Bleta
Summary: A versatile template-directed colloidal self-assembly method was used to fabricate composition-tuned mesoporous RuO2@TiO2-SiO2 catalysts, which showed excellent catalytic performance in the aqueous phase hydrogenation of levulinic acid. The cyclodextrin-derived catalyst exhibited high LA conversion and 99% GVL yield, and could be reused at least five times without loss of activity. This work presents an effective approach for engineering the surface morphology of Ru nanocrystals and pore characteristics of TiO2-based materials for catalytic applications in hydrogenation reactions.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Materials Science, Ceramics
Andrew P. Lange, Koroush Sasan, Leonardus Bimo Bayu Aji, Timothy Y. Yee, Jungmin Ha, F. J. Ryerson, Gabriela Remulla, Rebecca Dylla-Spears
Summary: The mass transport mechanisms of Ti and Ge in TiO2:SiO2 and GeO2:SiO2 direct ink write, additively manufactured glasses were studied. Ti was found to transport through solid state interdiffusion between SiO2 and TiO2 precursor particles, while Ge was more mobile. These results are important for the design of index modifying inks in the direct ink write process.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Energy & Fuels
Run-Ping Ye, Lin Liao, Tomas Ramirez Reina, Jiaxu Liu, Durgaiah Chevella, Yonggang Jin, Maohong Fan, Jian Liu
Summary: The study introduces an improved sol-gel method for loading Ni-MOF onto a silica support to create a Ni/SiO2 catalyst. The catalyst demonstrates excellent catalytic performance under low temperature and high GHSV conditions, with high CO2 conversion and CH4 selectivity. This work provides a groundbreaking strategy for loading MOF derived catalysts and may offer insights for preparing highly dispersed Ni/SiO2 catalysts.
