Review
Chemistry, Multidisciplinary
Majid Vafaeezadeh, Werner R. Thiel
Summary: This article provides an overview of the broad applications of periodic mesoporous organosilicas (PMOs) in various research fields such as chemistry and material science. By choosing suitable organic groups, the surface properties of PMOs can be tuned. The review also discusses four leading areas of PMO nanomaterials and their potential applications for future developments.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Physical
Amir Hasanzadeh, Behnam Gholipour, Sadegh Rostamnia, Aziz Eftekhari, Asghar Tanomand, Ali K. Valizadeh, Samad Khaksar, Rovshan Khalilov
Summary: Nano-size silver particles stabilized on urea-based periodic mesoporous organosilica, using Euphorbia leaf extract as a green reducing agent; physical and chemical properties of organosilica materials analyzed through various techniques; promising biocompatibility and antibacterial effects of designed material demonstrated through in vitro cytotoxicity test.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
M. Angeles Navarro, Juan Amaro-Gahete, Jose R. Ruiz, Cesar Jimenez-Sanchidrian, Francisco J. Romero-Salguero, Dolores Esquivel
Summary: A new heterogeneous catalyst with excellent catalytic performance has been synthesized by immobilizing a copper complex on a surface-functionalized ordered mesoporous organosilica. The catalyst showed high conversion and selectivity in the epoxidation reaction.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Majid Vafaeezadeh, Kristin Weber, Anna Demchenko, Philipp Losch, Paul Breuninger, Andrea Losch, Michael Kopnarski, Sergiy Antonyuk, Wolfgang Kleist, Werner R. Thiel
Summary: A new method for synthesizing a Janus periodic mesoporous organosilica material (JPMO) is introduced, where the material is capable of forming stable Pickering emulsions. This bifunctional material may find widespread applications in various fields related to material science and catalysis.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Xiaoyun Qiao, Zeshan Xiong, Zongtao Zhang, Runwei Wang, Shilun Qiu
Summary: This study proposes a promising synthetic method for functionalized titanium dioxide (TiO2) by combining photoactive porphyrin-periodic mesoporous organosilica (PMO) with hollow TiO2 nanospheres, forming a multi-component synergistic system. The prepared composite TiO2@Pro exhibits photocatalytic activity in the aerobic oxidation of sulfide in the aqueous phase under visible light. The high reactivity is attributed to the catalyst's large specific surface area, amphiphilicity, wide visible light absorption, and high electron-hole pair separation rate. This strategy provides a new approach for designing TiO2-based photocatalysts for heterogeneous catalysis under visible light.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Fangshen Li, Xinyao Feng, Jiaxing Huang, Mo Zhang, Wenmo Liu, Xupu Wang, Rui Zhu, Xun Wang, Pengfei Wang, Bin Yu, Wei Li, Zhen-An Qiao, Xianghui Yu
Summary: Infection diseases like AIDS and COVID-19 pose challenges in creating protective vaccines, but adjuvants play a critical role in inducing strong immune responses. This study demonstrates that periodic mesoporous organosilica (PMO) can act as a multifunctional nanoadjuvant by delivering antigens, prolonging exposure, and activating immune cells. The PMO nanoadjuvant effectively induces potent and durable antibody responses against different virus strains, activates various immune cells, and shapes both humoral and cellular immune responses, making it a promising adjuvant for subunit vaccines against multiple pathogens.
Article
Chemistry, Multidisciplinary
M. Angeles Navarro, Sunanda Sain, Maximilian Wuenschek, Christian M. M. Pichler, Francisco J. J. Romero-Salguero, Dolores Esquivel, Souvik Roy
Summary: A hybrid material, CoPc-PMO, consisting of a molecular cobalt phthalocyanine catalyst integrated in an ethylene-bridged periodic mesoporous organosilica, has been developed for efficient visible light-driven CO2 reduction to CO. The CoPc-PMO exhibited high CO-selectivity and a turnover number of over 6000 for CO evolution under simulated solar light irradiation. This system demonstrates a benchmark for immobilized CoPc-based catalysts in visible light-driven CO2 reduction.
Article
Chemistry, Physical
Ali Zebardasti, Mohammad G. Dekamin, Esmail Doustkhah
Summary: The study focused on the hybridisation of mesoporous organosilicas to enhance adsorption and stabilisation of noble metal nanoparticles, leading to the development of efficient heterogeneous catalysts for organic transformations. Specifically, a unique organic-inorganic mesoporous silica was used as a support for Pd nanoparticles synthesis and stabilisation, resulting in a green catalyst with efficient recyclability for the conversion of aqueous p-nitrophenol to p-aminophenol at room temperature.
Article
Multidisciplinary Sciences
Maryam Neysi, Dawood Elhamifar
Summary: A novel magnetic ionic liquid based periodic mesoporous organosilica supported palladium nanocomposite was synthesized and characterized. Its catalytic performance in the Heck reaction was investigated, showing high activity and stability.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Inorganic & Nuclear
Wanlu Liu, Anna M. Kaczmarek, Pascal Van der Voort, Rik Van Deun
Summary: In this study, three unique organic-inorganic hybrid nanocomposite materials were developed for metal ion and solvent sensing. The results demonstrate the potential application of these materials in environmental and chemical industries.
DALTON TRANSACTIONS
(2022)
Article
Engineering, Chemical
Hassan M. A. Hassan, Mohamed A. Betiha, Mosaed S. Alhumaimess, Thamer S. Alraddadi, Shimaa K. Mohamed, Sherif A. Younis, Ayoub Abdullah Alqadami, Ibrahim Hotan Alsohaimi
Summary: Sulfur compounds produced by the combustion of fossil fuels are a major component of air pollution. In this study, PMO-IL-based heterogeneous catalysts were synthesized and tested for desulfurization of aromatic sulfur compounds. The results showed that MnO4-PMO-IL and HPW12O40-PMO-IL catalysts had the highest desulfurization efficiency at a smaller O/S ratio, making them effective catalysts for the oxidative desulfurization of fuel.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Mahdieh Haghighat, Karen Leus, Farhad Shirini, Pascal Van Der Voort
Summary: By clicking a Salen ligand onto a thiol-ethane bridged periodic mesoporous organosilica (Salen-PMO) through a photo-initiated thiol-ene click reaction, a functionalized PMO material with excellent CO2 uptake capacity was obtained. Furthermore, a heterogeneous catalyst formed by coordinating a MoO22+ complex onto the Salen-PMO material exhibited good catalytic performance in the epoxidation of cyclohexene.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Article
Chemistry, Physical
Xavier Cattoen, Stephanie Kodjikian, Philippe Trens
Summary: The synthesis of various periodic mesoporous organosilica nanoparticles (nanoPMOs) from organo-bridged bis(triethoxy)silanes is described. The influence of sodium hydroxide concentration on the size and morphology of the nanoparticles is observed. Comparison of the resulting hybrid nanoPMOs reveals significant differences in their adsorption properties towards rhodamine B (RB) and highlights the strong affinity of phenylene PMO with the dye. Additionally, it is found that the phenylene-bridged nanoPMO exhibits higher lipophilicity compared to other studied linkers.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Yasutomo Goto, Ken-ichi Yamanaka, Masataka Ohashi, Yoshifumi Maegawa, Shinji Inagaki
Summary: The study presented an efficient photocatalytic system for H-2 production using MeAcd-PMO material loaded with Pt nanoparticles under visible light irradiation. The material exhibited a unique energy transfer mechanism, which could be useful in constructing efficient photocatalytic systems mimicking natural photosynthesis.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Review
Chemistry, Analytical
Bei Liu, Hui Li, Kaijun Quan, Jia Chen, Hongdeng Qiu
Summary: This review article focuses on the application of periodic mesoporous organosilica (PMO) materials with organic functionalities in chromatographic separation, including packed columns and monolithic columns. The correlation between PMO chromatographic stationary phase compositions and chromatographic performance is discussed by summarizing the functional bridges, synthesis methods, and modification methods. The research directions for further development of a more highly efficient PMO chromatographic column are also outlined.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Babak Karimi, Bahareh Ghaffari, Hojatollah Vali
Summary: The study successfully prepared a highly water-dispersible/magnetically separable multi-functional catalyst system by incorporating TEMPO and an imidazolium bromide bearing TEG groups into the Fe3O4@SiO2 core-shell structure. The catalyst showed excellent performance in alcohol oxidation with strong synergistic effect between functionalized components, dual-adjustable selectivity, and recyclability through a double-separation strategy.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Analytical
Kobra Zavar Mousavi, Yadollah Yamini, Babak Karimi, Mohammad Mahdi Khataei, Mojtaba Khorasani, Shahram Seidi, Mostafa Ghaemmaghami
Summary: A sensitive SPME coating based on plugged BFPMO was developed for the extraction of chlorophenols in water and honey samples. The plugged BFPMO coating showed outstanding enrichment ability with low detection limits and good reproducibility. This method proved to be applicable for the determination of CPs in real water samples with high relative recoveries.
Article
Chemistry, Physical
Seyedeh Zahra Alizadeh, Babak Karimi, Hojatollah Vali
Summary: A nitrogen-rich ordered mesoporous carbon (DNOMC) was successfully synthesized and used as a support for palladium nanoparticles to prepare a catalyst with high activity and selectivity in the oxidation of alcohols in water. The catalyst showed good reusability and potential industrial application value.
Review
Materials Science, Multidisciplinary
Babak Karimi, Nasim Ganji, Omid Pourshiani, Werner R. Thiel
Summary: This article provides a comprehensive review of the recent advances in the synthesis, morphology, functionalities, and applications of periodic mesoporous organosilicas (PMOs), with a focus on developments after 2014. Special attention is given to a new family of PMOs, namely hollow spherical and hollow/yolk shell PMOs, which offer additional benefits compared to traditional PMOs.
PROGRESS IN MATERIALS SCIENCE
(2022)
Article
Biotechnology & Applied Microbiology
Rosaria Ciriminna, Mina Ghahremani, Babak Karimi, Mario Pagliaro
Summary: This study provides an overview of the extraction routes of nanocellulose, highlighting the limitations imposed by high costs in its industrial applications. However, in recent years, green extraction routes have been developed, offering the potential for widespread use of nanocellulose in various industries through sustainable production and utilization of low-cost waste materials.
BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR
(2023)
Article
Chemistry, Applied
Sedigheh Abedanzadeh, Babak Karimi, Zainab Moosavi-Movahedi, Omid Pourshiani, Alireza Badiei, Ali A. Moosavi-Movahedi
Summary: Artificial enzymes resembling natural enzymes were developed using a rational design approach to simulate the coordination sphere around the iron active center. Periodic mesoporous organosilica (PMO) materials were used as supports due to their unique properties, and a new peroxidase-like nanozyme was fabricated. The biomimetic pathways used in this study showed potential for the development of nanozymes with excellent thermal stability and long-term storage stability.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Organic
Babak Karimi, Akbar Mobaraki, Hamid M. M. Mirzaei, Hojatollah Vali
Summary: A series of metal-free tandem reactions were conducted to synthesize pharmaceutically important 2-substituted benzoazoles using catalyst-free conditions with Et-PMO-Me-PrSO3H and SBA-15-PrSO3H as solid acids. The selectivity between 2-mercaptobenzoxazole and 2-aminobenzoazole derivatives could be altered by changing the catalyst from hydrophobic material 1a to more hydrophilic catalyst 1b. This novel and green approach provides an alternative method for synthesizing 2-substituted benzoazole derivatives.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Rosaria Ciriminna, Mina Ghahremani, Fahimeh Varmaghani, Babak Karimi, Mario Pagliaro
Summary: Chemistry, including electrochemistry, is understood and practiced using models and visualization. This study emphasizes the potential of a modeling approach focused on green chemistry applications in improving electrochemistry education. Green electrosynthesis experiments, in particular, greatly enhance student interest and learning in this interdisciplinary field.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2023)
Article
Chemistry, Physical
Omid Pourshiani, Babak Karimi, Hesamodin Moradi, Werner R. R. Thiel, Hojatollah Vali, Pietro Mastrorilli, Stefano Todisco
Summary: The catalytic activity of several supported catalysts with perruthenate anions in mesochannels of plugged and unplugged bifunctional periodic mesoporous organosilicas (Ru@BFPMOs) in the aerobic oxidation of alcohols was investigated. The morphology and structure of the materials were characterized, and it was found that all materials have a 2D-hexagonal symmetry structure. The resulting catalyst showed high efficiency in the oxidation of a wide variety of alcohols.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Nasim Shamsvand, Fahimeh Varmaghani, Babak Karimi, Hamzeh Hassanaki
Summary: The role of nitrogen functional groups in nitrogen-doped ordered mesoporous carbons (OMCs) was investigated using two home-made ionic liquid-derived OMCs with different nitrogen concentrations. It was found that the nitrogen content had a significant impact on the loading of electroactive species on the OMCs.
Article
Chemistry, Multidisciplinary
Mojtaba Khorasani, Babak Karimi, Hojatollah Vali
Summary: In this study, a bifunctional periodic mesoporous organosilica was used as a catalyst support to immobilize iodide ions for the catalytic reaction between CO2 and epoxides, leading to the formation of cyclic carbonates. The catalyst exhibited improved activity and could be reused multiple times without loss in activity or selectivity.
REACTION CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Babak Karimi, Mina Ghahremani, Hojatollah Vali, Rosaria Ciriminna, Mario Pagliaro
Summary: The ABNO@PMO-IL-Br material is a robust bifunctional catalyst for metal-free aerobic oxidation of primary and secondary alcohols under oxygen balloon reaction conditions. It can also be employed successfully in the first metal-free self-esterification of primary aliphatic alcohols, producing valuable esters.
CHEMICAL COMMUNICATIONS
(2021)