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
Chemistry, Applied
Marta Bordonhos, Mirtha Lourenco, Jose R. B. Gomes, Paula Ferreira, Moises L. Pinto
Summary: The study investigates the application of periodic mesoporous organosilica materials in ethylene and ethane adsorption for the first time. Results show that the materials tend to be more selective towards ethylene, with silylated materials exhibiting higher affinity towards ethane. Additionally, samples functionalized with primary amines show better selectivity towards ethylene.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Energy & Fuels
Mengshuai Liu, Penghui Zhao, Wenwen Zhang, Xin Cheng, Hongtao Fei, Jingjing Ma, Fusheng Liu
Summary: This study developed triazine- and urea-functionalized periodic mesoporous organosilicas (TUF-PMOs) for CO2 adsorption and conversion. The optimized TUF-PMO-20 with TBAI cocatalyst demonstrated good bifunctionality, reusability, and versatility.
Article
Engineering, Environmental
Bruna Castanheira, Sergio Brochsztain, Larissa Otubo, Antonio Carlos S. C. Teixeira
Summary: In this study, PMONDI was used as a photocatalyst for the efficient degradation of antibiotics. Compared to traditional TiO2/SBA-15, PMONDI showed improved performance in terms of photodegradation and reusability. Analysis of the degradation products revealed two main pathways. Therefore, PMONDI materials have great potential as photocatalysts for the degradation of CECs and should be further explored.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
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, 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
Engineering, Chemical
Hao Li, Danqing Shen, Huiling Lu, Fan Wu, Xueping Chen, Roser Pleixats, Jianming Pan
Summary: The article discusses the significance of Periodic Mesoporous Organosilica materials and their advantages in various fields, emphasizing their potential in detecting and recovering heavy metal ions effectively. It also stresses the urgent need to address the harm caused by heavy metal pollution to the environment and human health.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
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, Inorganic & Nuclear
Wanlu Liu, Anna M. Kaczmarek, Karel Folens, Gijs Du Laing, Pascal Van der Voort, Rik Van Deun
Summary: Three Periodic Mesoporous Organosilica (PMO) materials were presented, including a pyridine dicarboxamide functionalized PMO (DPA-PMO) and two amine functionalized PMOs (Am-PMO and Am-ePMO). These materials show potential for near-infrared (NIR) luminescence applications.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
Mathilde Laird, Niklas Herrmann, Carole Carcel, Philippe Trens, Erwan Oliviero, Guillaume Toquer, Rozenn Le Parc, Jean-Louis Bantignies, John R. Bartlett, Michel Wong Chi Man
Summary: This study describes the synthesis of multifunctional dendrimers with a cleavable disulfide linker and condensable triethoxysilyl groups, which are embedded in silsesquioxane networks. Treatment with dithiothreitol allows selective cleavage of the dendrimer's core, creating thiol functions within the pores. Impregnation with gold salts and reduction results in the formation of gold nanoparticles. The dendrimer generation affects the size of the nanoparticles, and surface functionalization controls the formation of clusters and nanoparticles.
Article
Chemistry, Multidisciplinary
Yuki Saito, Shu Kobayashi
Summary: The application of heterogeneous catalysts in continuous-flow enantioselective hydroacylation reactions was studied. Catalysts were prepared by mixing supports and rhodium complexes, and showed excellent activity and enantioselectivity. Under optimized conditions, the catalysts exhibited high turnover numbers and could be applied to various substrates. Furthermore, sequential-flow reactions with other heterogeneous catalysts were demonstrated for the synthesis of biologically active molecules and functional materials.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Biochemical Research Methods
Yangyang Ren, Shuhua Han
Summary: A periodic mesoporous organosilica material with turn-on fluorescence enhancement for sensing Cu2+ was synthesized via a template-directed co-condensation method. The material showed high selectivity, recyclability, and stability, making it a promising chemical sensor for Cu2+.
JOURNAL OF FLUORESCENCE
(2023)
Article
Chemistry, Multidisciplinary
Quan Ouyang, Guangshe Li, Xin Zhang, Xu Zhao, Shilong Fu, Liping Li
Summary: This study reports a yolk-shell gradient-structured SiOx-based anode derived from periodic mesoporous organosilica spheres, which exhibits exceptional cycling stability and rate capability. The unique gradient structure and composition enhance the electrical conductivity of the SiOx anode, reduce side reactions, and provide void space for SiOx expansion, effectively mitigating the stress caused by volumetric effect.
Article
Chemistry, Applied
Bei Liu, Kaijun Quan, Xiaoming Yang, Jia Chen, Hongdeng Qiu
Summary: In this study, ethylene-bridged PMO core-shell particles with radially-oriented mesopores were prepared and showed improved separation performance after derivatization. These hybrid particles exhibited good mechanical strength and chemical stability, suggesting potential application in HPLC separation.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Physical
Seyed Mehran Hoseini Moghaddam, Mahdieh Haghighat, Farhad Shirini
Summary: A novel ionic liquid-based Periodic Mesoporous Organosilicas (PMOs) was prepared using a post-synthetic method. The PMO-NH material was synthesized through co-condensation of amine bis-silane precursor and tetraethylorthosilicate (TEOS) in the presence of pluronic-123. The amine units were further reacted with perchloric acid to yield the ionic-PMO material (PMO-NH2 +ClO4-). The obtained material exhibited a hexagonal lattice with highly ordered mesostructure and showed excellent catalytic performance in the coupling reaction of amine/formic acid and the preparation of formamidine derivatives.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Multidisciplinary
Paul A. Advincula, Jacob L. Beckham, Chi Hun Choi, Weiyin Chen, Yimo Han, Dmitry Kosynkin, Alexander Lathem, Alvaro Mayoral, Miguel Jose Yacaman, James M. Tour
Summary: We demonstrate the synthesis of a solvent- and gas-free 2D carbon nanotube/graphene network through flash Joule heating of pristine carbon nanotubes. The proportion of each morphology in the hybrid material can be controlled by varying the pulse time. Epoxy composites made with the hybrid material show significantly increased hardness and Young's modulus compared to neat epoxy, indicating that flash Joule heating can effectively convert carbon nanotubes into a hybrid network for reinforcement.
Article
Engineering, Environmental
Juan J. Mercadal, Alvaro Mayoral, Jose Luis G. Fierrod, Enrique Garcia-Bordeje, Ignacio Melian-Cabrera
Summary: By purifying the raw SWCNT in one step, lowering the MeOx concentration and generating surface C=O groups, the catalytic performance of SWCNT in the oxidative dehydrogenation of ethylbenzene was significantly improved. The textural improvement and MeOx removal contributed to the enhancement of EB conversion, ST selectivity, and reduction of COx selectivity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Crystallography
Guillermo Barcena-Gonzalez, Andrei Hernandez-Robles, Alvaro Mayoral, Lidia Martinez, Yves Huttel, Pedro L. Galindo, Arturo Ponce
Summary: Electron backscattering diffraction analyzes crystalline phases at large scales, while precession electron diffraction obtains 4D-STEM data for nanometric structure elucidation. Both techniques have limitations due to probe size and complexity of image acquisition. Advanced machine learning techniques, such as deep learning, can overcome these limitations. This research demonstrates how Gabor filters can effectively extract features from electron microscopy images, reducing the need for large training datasets. The combination of Gabor filters and unsupervised learning enables particle segmentation and crystal orientation mapping at atomic scale.
CRYSTAL RESEARCH AND TECHNOLOGY
(2023)
Article
Environmental Sciences
Yawen Xiao, Ahmed S. Helal, Eva Mazario, Alvaro Mayoral, Alexandre Chevillot-Biraud, Philippe Decorse, Remi Losno, Francois Maurel, Souad Ammar, John S. Lomas, Miryana Hemadi
Summary: In this study, Maghemite (gamma-Fe2O3) nanoparticles were functionalized with 3-aminopropyltriethoxysilane (APTES) and reacted with diethylenetriamine-pentaacetic acid (DTPA) to obtain a nanohybrid adsorbent DAMNP. The DAMNP showed high adsorption capacity and selectivity for uranyl ions, making it a promising candidate for recovering uranium from nuclear wastewaters.
ENVIRONMENTAL RESEARCH
(2023)
Article
Food Science & Technology
Sofia F. Reis, Vitor J. Martins, Rita Bastos, Tania Lima, Viviana G. Correia, Benedita A. Pinheiro, Lisete M. Silva, Angelina S. Palma, Paula Ferreira, Manuel Vilanova, Manuel A. Coimbra, Elisabete Coelho
Summary: This study aims to investigate the feasibility of brewer's spent yeast (BSY) microcapsules as oral carriers for food and biomedical applications. The results demonstrate that BSY microcapsules have strong resistance to digestion and are rich in (beta 1 -> 3)-glucans, which can be recognized by the human Dectin-1 immune receptor. Additionally, the digested material is recognized by various lectins related to (beta 1 -> 3)-glucans, glycogen, and mannans.
Article
Food Science & Technology
Ana S. P. Moreira, Joana Goncalves, Francisco Sousa, Ines Maia, Hugo Pereira, Joana Silva, Manuel A. Coimbra, Paula Ferreira, Claudia Nunes
Summary: In this study, coccolithophore microalgae were incorporated as fillers in starch-based films to develop biodegradable and bioactive materials for food packaging. The introduction of microalgae biomass improved the flexibility and hydrophobicity of the films. Additionally, the films exhibited antioxidant activity, which was not observed with commercial fillers.
Review
Multidisciplinary Sciences
Marta Bordonhos, Tiago L. P. Galvao, Jose R. B. Gomes, Jose D. Gouveia, Miguel Jorge, Mirtha A. O. Lourenco, Jose M. Pereira, German Perez-Sanchez, Moises L. Pinto, Carlos M. Silva, Joao Tedim, Bruno Zezere
Summary: This article presents an overview of a collaborative research effort on computational approaches to understand materials and tools at different length and time scales. It introduces various techniques and models used in the study, as well as recent computational case studies focusing on material synthesis, interpretation of experimental results, prediction of material properties, and material selection for specific applications.
ADVANCED THEORY AND SIMULATIONS
(2023)
Article
Chemistry, Multidisciplinary
Zhuoya Dong, Enci Zhang, Yilan Jiang, Alvaro Mayoral, Qing Zhang, Yanhang Ma, Huaidong Jiang
Summary: In this study, electron ptychography was used to directly observe the local structures of two zeolites, Na-LTA and ZSM-5. The framework atoms and extra-framework cations were successfully imaged. This approach provides a new way to locally image zeolite structures and is important for further studying and tuning zeolite active sites at the atomic level.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Jaime Gonzalez, Ali Ghaffarinejad, Maxim Ivanov, Paula Ferreira, Paula M. Vilarinho, Ana Borras, Harvey Amorin, Bernd Wicklein
Summary: In this study, the effect of combining nanosized carbon fillers with natural polymers such as cellulose on the enhancement of electrical properties in nanogenerator devices was investigated. It was found that the highest output voltage in triboelectric mode was obtained from cellulose films with carbon nanotubes and carbon black, while the highest piezoelectric voltage was produced in cellulose nanofiber-carbon nanotube films. The increased electricity generated from cellulose nanocomposites may lead to more efficient and biodegradable nanogenerators.
Article
Pharmacology & Pharmacy
Sara A. A. Valente, Guido R. R. Lopes, Isabel Ferreira, Miguel F. F. Galrinho, Margarida Almeida, Paula Ferreira, Maria T. T. Cruz, Manuel A. A. Coimbra, Claudia P. Passos
Summary: Non-invasive routes for insulin delivery are being developed to replace painful subcutaneous injections. Polysaccharides from roasted coffee beans and spent coffee grounds, specifically galactomannans and arabinogalactans, were utilized to prepare insulin-loaded microparticles. The polysaccharides were obtained through purification and ethanol precipitation or microwave-assisted extraction and ultrafiltration.
Article
Materials Science, Multidisciplinary
Mariana R. F. Silva, Manuel F. R. P. Alves, Joao P. G. Q. Cunha, Joao L. Costa, Cristina A. Silva, Maria H. V. Fernandes, Paula M. Vilarinho, Paula Ferreira
Summary: UV radiation has negative effects on human health and food, and there is a need for the development of UV-shielding materials. These materials can be used in various applications like packaging, sunscreens, contact lenses, and coatings. The dispersion of UV-absorber into a transparent matrix is a common method, but there are challenges in maintaining transparency.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Physical
Anna Liutkova, Victor Drozhzhin, Jason M. J. J. Heinrichs, Valentin Jestl, Angelina Evtushkova, Brahim Mezari, Alvaro Mayoral, Nikolay Kosinov, Emiel J. M. Hensen
Summary: The selectivity of the methanol-to-hydrocarbons reaction can be modified by using alkaline earth metals to modify zeolite catalysts. Sr2+ was used as a catalyst and its higher atomic number facilitated characterization by scanning transmission electron microscopy and operando X-ray absorption spectroscopy. The presence of Sr2+ in the zeolite micropores during the reaction resulted in an increased adsorption of reactants compared to zeolites without Sr, explaining the increased propylene yield and lower deactivation rate.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Kingsley Christian Kemp, Alvaro Mayoral, Suk Bong Hong
Summary: In this study, zeolite intergrowths of RTH/ITE and MEL/MFI were synthesized using 2-isopropylimidazolium-based cations as organic structure-directing agents in concentrated fluoride media. The phase selectivity in the synthesis was found to depend on the concentration of OSDA cations, fluoride anions, and the type of OSDA used. Molecular modeling results suggest that the crystallization of intergrowth zeolites in fluoride media may be controlled kinetically. Cs-corrected STEM analysis revealed the existence of previously unobserved MEL-MFI intergrowth in crystals synthesized under specific conditions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Ruxandra G. Chitac, Vladimir L. Zholobenko, Robin S. Fletcher, Emma Softley, Jonathan Bradley, Alvaro Mayoral, Alessandro Turrina, Paul A. Wright
Summary: The SWY-type aluminosilicate zeolite, STA-30, has been synthesized via different routes. It has been found that the synthesis conditions can greatly affect the crystal morphology, intracrystalline porosity, and silanol concentrations of STA-30. Samples templated by diDABCO-C8(2+) show hierarchical microporosity and higher pore volumes compared to other samples.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Engineering, Chemical
Zelia Alves, Paulo Brites, Nuno M. Ferreira, Goncalo Figueiredo, Gonzalo Otero-Irurueta, Idalina Goncalves, Sonia Mendo, Paula Ferreira, Claudia Nunes
Summary: Extension of food shelf life is driving the development of active packaging materials, and the addition of biochar-ZnO composites to polysaccharide-based films shows promising potential with antibacterial, antioxidant, and conductive properties.
JOURNAL OF FOOD ENGINEERING
(2024)