Article
Chemistry, Multidisciplinary
Zihao Rei Gao, Jian Li, Cong Lin, Alvaro Mayoral, Junliang Sun, Miguel A. Camblor
Summary: HPM-14 is a new extra-large pore zeolite with a complex structure that required the use of various techniques for elucidation. The structure was solved using three-dimensional electron-diffraction technique, revealing an intergrowth of two polymorphs.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Materials Science, Multidisciplinary
Yilin Fu, Liping Zhen, Bo Zhou, Huazhi Wang
Summary: This study reports a new method for synthesizing zeolitic imidazolate framework-67 with hierarchical pores using polyvinyl alcohol as the template, providing a superior support material for phase change materials and offering a simple and effective approach to tailor the microstructure of metal organic frameworks.
Article
Engineering, Environmental
Dae Hwan Kim, Jae Hwan Jeong, Hee-Chul Woo, Mun Ho Kim
Summary: A simple method for producing highly porous polystyrene (PS) microspheres with interconnective open pores was proposed by dispersing PS seed particles in an oil-in-water emulsion system. The study systematically investigated the morphological changes of PS microspheres in different oil-in-water emulsions, and identified the best system for synthesizing highly porous PS microspheres. These porous microspheres showed promising potential as a supporting material for catalysis applications, with high porosity, large surface area, and good chemical stability.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Multidisciplinary Sciences
Xuesong Wang, Ziyan Nie, Jia Chang, Michael L. Lu, Yunqing Kang
Summary: By creating multiple channels in the porous beta-TCP scaffold, significant improvements were observed in cell attachment and proliferation, as well as in the stimulation of osteogenic gene expression. This approach also resulted in more bone formation, accelerated protein expression related to bone formation, and enhanced mineral deposition and vasculature structures compared to non-channeled scaffolds, demonstrating its promising potential in bone tissue regeneration.
SCIENTIFIC REPORTS
(2021)
Article
Environmental Sciences
Liang Fang, Wei Yang, Jianhua Hou, Kewang Zheng, Asif Hussain, Yongcai Zhang, Zhenhua Hou, Xiaozhi Wang
Summary: In this study, interconnected hierarchical pore biochar (HTB) was synthesized using a ice-templating strategy with tofukasu. HTB exhibited a large specific surface area and hierarchical porosity, as well as rich functional groups. It showed excellent ability in removing Cr(VI).
Article
Engineering, Chemical
Hao Peng, Kang Li
Summary: In this study, a novel approach combining non-solvent-induced phase separation (NIPS) with crystallisation and diffusion (CCD) technique, called NIPS-CCD, was proposed to enhance the permeation of polyethersulfone (PES) ultrafiltration membrane. The NIPS-CCD method showed a 50-fold increase in water permeation to 771 LMH bar-1 with pore size of 6-7 nm. This approach can be easily adapted for other high-performance membrane materials, making it a promising strategy for improving membrane permeation properties.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Environmental
Suji Kim, Minjae Lee, Sekwon Oh, Won-Hee Ryu
Summary: In this study, a 3D interconnected porous Cu foam electrode was used to suppress the vertical growth of Li and alleviate the volume change of the cell in an anode-free Li-metal battery. The electrode exhibited facile charge transfer, lower nucleation overpotential, and reduced polarization compared to conventional Cu foil. The Li plating/stripping behaviors and morphology evolution on the unique electrode were investigated through cross-sectional observations and ex-situ characterizations. This work provides a novel strategy for designing porous electrodes to achieve stable and high performance of anode-free Li-metal batteries.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Merve Suslukaya, Hande Mumcu Topaloglu, Nevin Gul Karaguler, Erdem Yavuz
Summary: A polymer carrying sulfonamide groups was prepared via the HIPE method, with a hypercrosslinking reaction enhancing surface area and selective interaction with HSA. The resulting polymer showed excellent adsorption performance with fast uptake, easy regeneration, and high affinity for HSA, making it a promising material for albumin adsorption.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Chemistry, Analytical
Md. Ali Asgar, Jun Kim, Seongmin Lee, Chau Van Tran, Muhammad Refatul Haq, Jung Bin In, Seok-min Kim
Summary: In this study, a simple and low-cost technique for fabricating three-dimensional interconnected microporous carbon frameworks (MCFs) decorated with microspheres was proposed for efficient hydrogen evolution reactions (HERs). The MCF electrode exhibited superior HER performance, outperforming all electrodes except the Pt electrode. The unique microspheres on the MCF electrode provided abundant active sites for efficient water splitting.
MICROCHEMICAL JOURNAL
(2023)
Article
Engineering, Environmental
Hyemin Kim, Young Soo Lim, Jung Hyun Kim
Summary: One-pot spray pyrolysis process is a promising method for mass production of nanostructured powder. The fabricated highly porous microspheres show improved catalytic abilities and cycle life, making them suitable for applications in Li-O-2 batteries and other fields.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Zhe Chen, Wen Yan, Stefan Schaffoener, Jinna Zhi, Nan Li
Summary: A novel method was used to fabricate microporous corundum-mullite refractory aggregates with decreased pore size and enhanced strength. The addition of silica sol resulted in the formation of pseudomorph particles with sub-micron pores, which improved the strength. However, a high content of SiO2 led to an increase in inter-particle pore size and a decrease in strength. The optimized product contained 13.0 wt. % SiO2 and exhibited a low median pore size and a high compressive strength.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Environmental
Huijie Zhou, Mingbo Zheng, Huan Pang
Summary: The study synthesized amorphous CoPx-CoOy composites with interconnected porous structures through low-temperature phosphating of cobalt oxides, demonstrating excellent electrocatalytic activity for oxygen evolution reactions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Jingyu Wang, Dezhe Fan, Lizhu Zhang, Dongjie Yang, Xueqing Qiu, Xuliang Lin
Summary: Biomass-derived porous carbon with interconnected pores was fabricated using lignosulfonate and CaCO3 as carbon sources and activators, respectively. The hierarchical porous carbon exhibited high adsorption capacity to both low and high-molecular-weight antibiotics. Its adsorption performance was superior to other biomass-derived and petroleum-derived carbons.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Xuhao Zhang, Xiao Zhang, Xianghui Li, Yanshun Liu, Hao Yu, Minghui Ma
Summary: In this study, porous geopolymers (PGPs) with controllable pore structures were successfully fabricated using the proposed foaming-liquid film balance control method. The results showed that interconnected pores can enhance the migration of solute and improve the long-term removal efficiency. PGP-PRBs demonstrated excellent performance for the removal of heavy metals, indicating their potential application in groundwater decontamination.
Article
Chemistry, Inorganic & Nuclear
Xue-Jing Zhang, Di -Ming Chen
Summary: A new metal-organic framework (MOF) with high adsorption capacity and selectivity for capturing C2H2 from gas mixtures has been successfully synthesized in this study.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Crystallography
Josu Sanchez-Martin, Robin Turnbull, Akun Liang, Daniel Diaz-Anichtchenko, Saqib Rahman, Hajra Saqib, Mujtaba Ikram, Catalin Popescu, Placida Rodriguez-Hernandez, Alfonso Munoz, Julio Pellicer-Porres, Daniel Errandonea
Summary: We investigated the behaviour of FeV2O4 cubic spinel structure under high-pressure conditions using powder X-ray diffraction and density-functional theory calculations. The sample was characterized at ambient conditions using energy-dispersive X-ray spectroscopy, Raman spectroscopy, and X-ray diffraction experiments. Our main finding is that FeV2O4 undergoes pressure-induced chemical decomposition into V2O3 and FeO around 12 GPa, which seems to be partially reversible. We also calculated the pressure dependence of the unit-cell volumes and bulk moduli of both spinel and orthorhombic FeV2O4 using density-functional theory calculations.
Article
Materials Science, Multidisciplinary
Robin Turnbull, Javier Gonzalez-Platas, Akun Liang, Dequan Jiang, Yonggang Wang, Catalin Popescu, Placida Rodriguez-Hernandez, Alfonso Munoz, Jordi Ibanez, Daniel Errandonea
Summary: We conducted an experimental and theoretical high-pressure study on Na3Bi(IO3)6 and found a first-order pressure-induced phase transition at around 9.5 GPa. This phase transition resulted in a doubling of the primitive cell volume and a decrease in the volume per formula unit. The transition also led to a decrease in the indirect electronic bandgap and revealed highly anisotropic compressibility of the ambient pressure phase.
RESULTS IN PHYSICS
(2023)
Article
Chemistry, Applied
Cristina Martinez, Alejandro Vidal-Moya, Bilge Yilmaz, C. P. Kelkar, Avelino Corma
Summary: Fluidized Catalytic cracking (FCC) is a main conversion process in refineries, using Y zeolite as the main source of activity and selectivity. A new Y zeolite catalyst, Phinesse(TM), based on partial substitution of RE by P, has been developed and shown to have similar performance to the conventional RE stabilized counterpart. The hydrothermal stability of different USYs with different dealumination degrees, containing P or La alone or a combination of both stabilizing elements, was compared. The results provide insights into the benefits of P-La stabilization observed in the commercial PhinesseTM catalyst.
Review
Chemistry, Multidisciplinary
Lichen Liu, Avelino Corma
Summary: This review discusses the structure, synthesis, and catalytic applications of heterogeneous bimetallic catalysts, including binuclear sites, nanoclusters, and nanoparticles. Recent progress in the field of bimetallic catalysts is highlighted, along with the future research directions and prospects in both fundamental and practical aspects of heterogeneous catalysis.
Article
Materials Science, Ceramics
R. Simancas, M. Takemura, C. -T. Chen, K. Iyoki, T. Okubo, T. Wakihara
Summary: The efficient removal of ammonium cation, one of the main causes of water source eutrophication, has been achieved using amorphous aluminosilicates as low-cost ion exchangers. The materials with varying Si/Al ratios were prepared by coprecipitation and showed higher cation exchange capacity than other zeolites. The ammonium uptake was investigated under different conditions and the amorphous aluminosilicate with Si/Al = 3 showed promising performance for ammonium removal.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Multidisciplinary Sciences
Pau Ferri, Chengeng Li, Daniel Schwalbe-Koda, Mingrou Xie, Manuel Moliner, Rafael Gomez-Bombarelli, Mercedes Boronat, Avelino Corma
Summary: Approaching the level of molecular recognition of enzymes with solid catalysts is a challenging goal, achieved in this work for the competing transalkylation and disproportionation of diethylbenzene catalyzed by acid zeolites. The key diaryl intermediates for the two competing reactions only differ in the number of ethyl substituents in the aromatic rings, and therefore finding a selective zeolite able to recognize this subtle difference requires an accurate balance of the stabilization of reaction intermediates and transition states inside the zeolite microporous voids.
NATURE COMMUNICATIONS
(2023)
Article
Geochemistry & Geophysics
David Santamaria-Perez, Raquel Chulia-Jordan, Alberto Otero-de-la-Roza, Robert Oliva, Catalin Popescu
Summary: We conducted high-pressure experiments and calculations to study the structure and compressibility of the aurichalcite mineral. We found a phase transition at 3 GPa and determined the bulk modulus of the initial aurichalcite structure. Our results showed that aurichalcite is more compressible than other copper and zinc carbonates due to its layered structure and the presence of directed hydrogen bonds. In addition, our density-functional theory calculations revealed the energetically stability of the aurichalcite structure compared to hydrozincite for different Zn:Cu ratios.
Article
Crystallography
Vinod Panchal, Laura Pampillo, Sergio Ferrari, Vitaliy Bilovol, Catalin Popescu, Daniel Errandonea
Summary: In this study, Co-doped SnO2 nanocrystals with a tetragonal rutile-type structure were subjected to high-pressure conditions up to 20.9 GPa. It was found that the Co-doped SnO2 undergoes a structural phase transition to an orthorhombic CaCl2-type phase at 14.2 GPa, with no phase coexistence. A discontinuous change in the unit-cell volume was observed during the phase transition, indicating a first-order type phase transition. Upon decompression, the transition was found to be reversible. The results were compared with previous studies on doped and un-doped SnO2, and the compressibility of different phases was discussed.
Article
Chemistry, Multidisciplinary
David Santamaria-Perez, Raquel Chulia-Jordan, Alberto Otero-de-la-Roza, Javier Ruiz-Fuertes, Julio Pellicer-Porres, Catalin Popescu
Summary: This study investigates the structural behavior and compressibility of the naturally occurring Zn-rich dolomite mineral minrecordite using diamond-anvil cell synchrotron X-ray diffraction. The results reveal that minrecordite exhibits highly anisotropic behavior, with the c axis being 3.3 times more compressible than the a axis. The compression of the [CaO6] and [ZnO6] octahedra, which are the dominant cations in each layer, governs the axial compressibilities and equation of state. Additionally, the study suggests that the observed phase transition in minrecordite is strain-induced and that the high-pressure polymorph is closely related to the CaCO3-II-type structure.
Article
Chemistry, Multidisciplinary
Risheng Bai, Guangyuan He, Lin Li, Tianjun Zhang, Junyan Li, Xingxing Wang, Xiumei Wang, Yongcun Zou, Donghai Mei, Avelino Corma, Jihong Yu
Summary: In this work, a carbonization-reduction method was used to create palladium carbide subnanometric species within pure silicate MFI zeolite. The developed catalyst showed superior performance in the selective hydrogenation of alkynes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Francisco Gonell, Miriam Rodenes, Santiago Martin, Mercedes Boronat, Ivan Sorribes, Avelino Corma
Summary: Developing precious-metal-free electrocatalysts for the hydrogen evolution reaction (HER) is crucial. Amorphous molybdenum sulfide-based materials provide highly active HER electrocatalysts by introducing active sites at both the edge positions and the typically inactive basal planes. The bottom-up synthesis using molecular complexes with Mo3S4 and Mo3S7 cluster cores enhances the HER activity and allows the modification of the derived materials with atomic-scale precision.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Miriam Rodenes, Frederic Dhaeyere, Santiago Martin, Patricia Concepcion, Avelino Corma, Ivan Sorribes
Summary: A defect-engineered molybdenum sulfide catalyst is used to establish straightforward synthetic processes using alcohols. Developing tandem catalytic strategies based on readily available, stable, and renewable feedstocks is crucial for sustainable chemical industries. The catalyst, defect-engineered basal planes of a molybdenum sulfide nanomaterial ({Mo3S4}( n )), enables one-pot single-step synthesis and facilitates various coupling reactions involving alcohol dehydrogenation and hydrogen activation processes.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
Diego Quintero-Ramos, Manuel Checa, Jose Luis Jorda, Maria J. Sabater
Summary: This study successfully synthesized 1-octadecanol from ethyl stearate using a nanosized Ru-supported tungstated zirconia catalyst, and revealed the activity and selectivity of the catalysts. Additionally, a synergistic effect between Ru and W species was discovered. The reaction sequence towards fatty alcohol was also elucidated.
Review
Chemistry, Multidisciplinary
Lichen Liu, Avelino Corma
Summary: Heterogeneous bimetallic catalysts are widely used in industrial processes, but understanding the active sites in these catalysts at the atomic and molecular level is challenging due to their structural complexity. Comparing the structural features and catalytic performances of different bimetallic entities can aid in developing a unified understanding of the structure-reactivity relationships and improving current bimetallic catalysts. This review discusses the geometric and electronic structures of three representative types of bimetallic catalysts, as well as the synthesis methods, characterization techniques, and catalytic applications of these catalysts.
Article
Chemistry, Inorganic & Nuclear
Alka B. Garg, Sinhue Lopez-Moreno, Pablo Botella-Vives, Oscar Gomis, Enrico Bandiello, Hussien Osman, Catalin Popescu, Daniel Errandonea
Summary: The crystal structure of YbSbO4 was determined using the Rietveld method with powder X-ray diffraction data. It was found to be monoclinic and isostructural to alpha-PrSbO4. The effect of pressure on the crystal structure and elastic constants were investigated using experiments and density-functional theory calculations.
DALTON TRANSACTIONS
(2023)
