Article
Chemistry, Physical
Yue Cao, Yong Wu, Yuanteng Zhang, Jing Zhou, Wei Xiao, Dong Gu
Summary: Mesoporous cobalt oxide as a catalyst shows excellent performance in the synthesis of N-heterocycles, with high turnover numbers and easy recyclability for at least six times. Comparative studies reveal that the high surface area of the catalyst plays a crucial role in catalytic reactivity.
Article
Chemistry, Applied
Nassira Ferroudj, Patricia Beaunier, Anne Davidson, Sebastien Abramson
Summary: The study explored the relationship between the activity and structure of γ-Fe2O3/SiO2 nanocomposite microspheres as heterogeneous catalysts, revealing that doped Fe3+ and ordered mesoporosity significantly enhance the activity of the materials, demonstrating excellent oxidation and mineralization effects on simulated water pollutants.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yuenan Zheng, Luoqi Wang, Hongyu Liu, Jiaqi Yang, Rui Zhang, Ling Zhang, Zhen-An Qiao
Summary: An energy balance concept is proposed to regulate the porous structure of ordered mesoporous perovskite oxides. The experimental results show that the interaction between mesoporous La2Zr2O7 and 5-hydroxymethylfurfural is promoted by rich Lewis acid sites, active Zr species, and favorable porous structure.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Farzeen Sakina, Carlos Fernandez-Ruiz, Jorge Bedia, Luisa Gomez-Sainero, Richard T. Baker
Summary: Ordered mesoporous carbon (OMC) was utilized as a support for palladium nanoparticles in catalysts for gas phase hydrodechlorination (HDC) of trichloromethane (TCM), showing excellent dispersion of fine Pd nanoparticles and high selectivity to higher hydrocarbons in two of the catalysts. However, the solid-liquid (SL) method resulted in larger particles and less uniform palladium distribution, leading to lower conversion, selectivity, and more severe catalyst deactivation at higher reaction temperatures.
Article
Engineering, Environmental
Yiyang Ma, Hongjie Wang, Xiaofan Lv, Dongbin Xiong, Haijiao Xie, Zhenghua Zhang
Summary: This study synthesized three-dimensional ordered mesoporous Co3O4 (3D OM-Co3O4) to enhance the activation ability of PMS and achieve rapid removal of RAN. 3D OM-Co3O4 can activate PMS through non-radical and radical pathways simultaneously, and it has good catalytic stability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Biochemical Research Methods
Hao Lv, Yanzhi Wang, Lizhi Sun, Yusuke Yamauchi, Ben Liu
Summary: Intermetallic nanomaterials, consisting of ordered atomic arrangement of two or more metals, have great potential for various applications. This protocol describes a method to prepare ordered mesoporous intermetallic nanomaterials with controlled compositions, morphologies/structures, and phases, which exhibit enhanced catalytic performance.
Article
Chemistry, Physical
Kim N. R. Dumoleijn, Alberto Villa, Marcello Marelli, Laura Prati, Kristof Moonen, Christian V. Stevens
Summary: Utilizing a heterogeneous bimetallic catalyst combining palladium and copper can achieve high yields in chemoselective amination reactions, while also suppressing undesired side reactions in other chemical conversions.
Article
Engineering, Environmental
Zhengfei Yu, Xifeng Chen, Yibo Zhang, Hongyu Tu, Pen Pan, Shuai Li, Yuxiang Han, Minjun Piao, Jianglei Hu, Fengwei Shi, Xia Yang
Summary: In a phosphotungstic acid aqueous solution, HPW/OMS-SO3H with ordered mesoporous structure was successfully prepared via a one-pot co-condensation method, showing promising catalytic activity for biodiesel production. The catalyst exhibited excellent performance due to the synergistic effect between HPW and propylsulfonic acid groups, with a biodiesel yield of 95.3% achieved under optimal conditions. The strong interaction between components also prevented significant performance loss after multiple reuse cycles.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Chemistry, Physical
Meiqi Gao, Lili Wang, Yang Yang, Yafei Sun, Xiaorui Zhao, Ying Wan
Summary: The evolution of model catalyst systems has progressed from single-crystal surfaces to two-dimensional and three-dimensional systems, mimicking the properties of nanoparticles in industrial catalysts. Ordered mesoporous carbon (OMC) materials have unique structures that enable Knudsen diffusion, metal dispersion, and metal embedment, and play important roles in catalysis and other applications. This review provides an introduction to the synthesis routes of OMC-supported metal or metal oxide catalysts and systematically summarizes the mass transfer, reactant chemisorption, discrimination of active species, and catalytic reaction mechanism of these catalysts, with a focus on the advantages of catalysis occurring inside mesopores. Understanding these factors helps in controlling catalytic reactions and designing long-lasting industrial catalysts.
Article
Polymer Science
Vincenzo Titone, Emmanuel Fortunato Gulino, Francesco Paolo La Mantia
Summary: Not recycling or recovering waste results in the loss of raw materials, but recycling plastics can reduce this loss and greenhouse gas emissions, supporting the decarbonization of plastic. However, recycling mixed plastics is challenging due to their incompatibility. This study examined the effect of temperature, rotational speed, and time on the morphology, viscosity, and mechanical properties of heterogeneous mixed polymers, including PE, PP, PS, and PET, to understand the behavior of these blends. The results showed that the blends had a brittle behavior, which improved slightly at lower temperatures and higher rotational speeds. A brittle-ductile transition was observed with increased mechanical stress, attributed to decreased particle size and the formation of copolymers.
Article
Multidisciplinary Sciences
Mark Robertson, Alejandro Guillen-Obando, Andrew Barbour, Paul Smith, Anthony Griffin, Zhe Qiang
Summary: This work pioneers a new manufacturing platform for producing ordered mesoporous materials through direct pyrolysis of crosslinked thermoplastic elastomer-based block copolymers. It demonstrates that this process can be extended to different polymer precursors for synthesizing mesoporous polymer, carbon, and silica. The obtained carbons possess large mesopores and sulfur-doped carbon framework, with tailorable pore textures upon varying the precursor identities.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Ceramics
Ke Ma, Yuli Gao, Jianjun Yi, Meng Cui, Haijun Hao, Qinghong Xu
Summary: A new kind of mesoporous hydroxyapatite (mesoHA) with an average pore diameter of about 2.4 nm was successfully prepared by depositing Ca2+ and H2PO4- ions on the inner channel surface of Si-MCM-41 and dissolving the Si-MCM-41 in alkali soluble. The porous material was used as a pH-responsive platform for adsorption and release of ciprofloxacin molecules. About 88.5% of ciprofloxacin was released from the platform when the environmental pH value was approximately 4.8, providing a new method for efficient utilization of antibiotics due to the host mesoHA being compatible with the human body.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Engineering, Environmental
Shixiong Tang, Fang Li, Jidong Liu, Bao Guo, Zenan Tian, Jianhua Lv
Summary: The treatment and reuse of polyester wastes have attracted widespread attention. This study proposed a convenient and feasible method to solve the plastic recycling crisis by using MgO/NaY catalysts with different MgO contents in the methanolysis of PET. The results showed that the catalyst had excellent catalytic activity, achieving high conversion of PET and yield of DMT under specific reaction conditions. Furthermore, the catalyst exhibited good recyclability after multiple cycles.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Shihai Xu, Chuncai Zhou, Hongxia Fang, Wenrui Zhu, Jiaqian Shi, Guijian Liu
Summary: This study successfully synthesized mesoporous silica from solid wastes, specifically biomass ash, using the alkali fusion method. The prepared mesoporous silica exhibited high surface area and ordered pore structure, and showed excellent CO2 adsorption performance. After multiple cycles of adsorption, the material maintained its adsorption properties and exhibited high selectivity towards CO2 adsorption.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Hao Lv, Huaiyu Qin, Katsuhiko Ariga, Yusuke Yamauchi, Ben Liu
Summary: We report a general concurrent template strategy for the precise synthesis of mesoporous Pt-/Pd-based intermetallic nanoparticles with desired morphology and ordered mesostructure. This strategy provides a powerful method for the preparation of ordered mesoporous intermetallic nanocrystals suitable for selective catalysis and fuel cell electrocatalysis.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Environmental
Sabuj Kanti Das, Sauvik Chatterjee, Arnab Banerjee, Greesh Kumar, Astam Kumar Patra, Ramendra Sundar Dey, Amlan J. Pal, Asim Bhaumik
Summary: This study presents a novel methodology for the single-step chemical transformation of amorphous conjugated microporous polymer (CMP) into crystalline graphene analogue. By subjecting the CMP to chemical treatment, a highly porous graphene nanosheet material with enhanced electrical conductivity was successfully synthesized. The resulting material exhibited excellent performance in the electrochemical oxygen reduction reaction, making it a promising catalyst for clean and green energy production.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Nitumani Das, Ratul Paul, Sohag Biswas, Risov Das, Rupak Chatterjee, Asim Bhaumik, Sebastian C. Peter, Bryan M. Wong, John Mondal
Summary: This study constructs a chemically stable, pyridine-equipped, and imine-linked porous organic polymer (Py-POP), which achieves photocatalytic fixation of CO2 and converts styrene epoxide (STE) to styrene carbonate (STC) under visible light illumination. The research provides mechanistic insight into the effectiveness of efficient, sustainable porous organic photocatalysts in visible light-driven CO2 conversion for various energy applications.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
Anirban Ghosh, Biswajit Chowdhury, Asim Bhaumik
Summary: We developed a cost-effective and green synthetic method to prepare controllable perforated hollow mesoporous silica nanoparticles. The grafting of Al(III) onto the silica framework makes it an efficient solid acid catalyst. The Al-doped hollow MSNs showed higher catalytic efficiency compared to contemporary aluminosilicate frameworks.
Article
Chemistry, Multidisciplinary
Snehasis Mishra, Kaustav Das, Sujan Chatterjee, Panchanan Sahoo, Sudip Kundu, Mrinal Pal, Asim Bhaumik, Chandan Kumar Ghosh
Summary: Carbon dots (CQDs) with tunable fluorescence emission and excitation, high water solubility, good photostability, and biocompatibility are considered promising for tumor theranostics. This study focused on the synthesis and characterization of highly fluorescent CQDs from orange juice. CQD/Ag heterostructures were also synthesized and their photostability and characterization were investigated. Cellular toxicity measurements were conducted to select the superior CQD/Ag heterostructure in the human colorectal carcinoma (HCT 116) cell line, along with the observation of cell death signaling through the ROS-dependent mitochondrial-mediated pathway.
Article
Nanoscience & Nanotechnology
Sayantan Chongdar, Udayan Mondal, Tonmoy Chakraborty, Priyabrata Banerjee, Asim Bhaumik
Summary: A water-stable, luminescent Ni(II)-based MOF was synthesized and used for rapid monitoring of mutagenic explosive TNP. The MOF showed an ultralow detection limit of 66.43 ppb, which was governed by PETRET-ICT and non-covalent interactions. Additionally, a recyclable MOF@cotton-swab detection kit was fabricated to enhance the on-field viability of the probe.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Santu Ruidas, Avik Chowdhury, Anirban Ghosh, Avik Ghosh, Sujan Mondal, A. D. Dinga Wonanke, Matthew Addicoat, Abhijit Kumar Das, Arindam Modak, Asim Bhaumik
Summary: A new porous crystalline COF, C6-TRZ-TPA COF, has been synthesized via extended Schiff base condensation. This COF exhibits high surface area and pore volume, making it an efficient photocatalyst for wastewater treatment and an excellent adsorbent for iodine capture.
Article
Nanoscience & Nanotechnology
Debabrata Chakraborty, Rupak Chatterjee, Saptarsi Mondal, Sabuj Kanti Das, Vipin Amoli, Minhaeng Cho, Asim Bhaumik
Summary: This study successfully synthesized nitrogen-rich porous organic polymers (POPs) with high adsorption capacity and selectivity under high pressure, high temperature, and humidity conditions, which show great potential for precombustion CO2 capture and H-2 purification.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Electrochemistry
Sabuj Kanti Das, Avik Chowdhury, Koushik Bhunia, Anirban Ghosh, Debabrata Chakraborty, Manisha Das, Utpal Kayal, Arindam Modak, Debabrata Pradhan, Asim Bhaumik
Summary: Robust and sustainable bifunctional electrocatalysts, Ni-Por-Py and Cu-Por-Py, consisting of transition metal coordinated porphyrin building blocks in pi-conjugated polymer skeletons, have been developed for efficient hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) under alkaline conditions. The excellent electrocatalytic activity of these catalysts is attributed to their high specific surface areas and microporosity, which facilitate electron transfer processes.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Inorganic & Nuclear
Rima Biswas, Debojit Ghosh, Samarpita Das, Sauvik Chatterjee, Samanka Narayan Bhaduri, Asim Bhaumik, Papu Biswas
Summary: Copper immobilized 2D-hexagonally ordered mesoporous silica material (CuMS) has been synthesized as an electrochemical and colorimetric dual-technique-based sensing platform for sulfite detection. The immobilization of copper on silica was achieved through a ligand. The synthesized CuMS material showed promising electrocatalytic activity and high sensitivity for sulfite oxidation, as well as excellent colorimetric detection ability.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Samanka Narayan Bhaduri, Debojit Ghosh, Rupak Chatterjee, Samarpita Das, Indrani Pramanick, Asim Bhaumik, Papu Biswas
Summary: A covalent organic polymer (COP) based on ethylene glycol-linked tetraphenylporphyrin has been developed. The Ni(II)-incorporated EG-POR material displayed excellent activity in both methanol oxidation reaction (MOR) and oxygen evolution reaction (OER) in an alkaline medium. The material showed high stability and has the potential to be used as a non-noble metal MOR catalyst.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Avik Chowdhury, Sudip Bhattacharjee, Sayantan Chongdar, Bhabani Malakar, Anindita Maity, Asim Bhaumik
Summary: A novel porous magnesium aluminum phosphate (MALPO) material with high specific surface area and hierarchical porosity was synthesized through a hydrothermal template-free approach. MALPO exhibited excellent catalytic performance in Knoevenagel condensation reaction, yielding up to 99% yield of the products.
Review
Chemistry, Multidisciplinary
Priyanka Kalita, Ratul Paul, Ankita Boruah, Duy Quang Dao, Asim Bhaumik, John Mondal
Summary: Chemical warfare agents, such as sulfur mustards, have been classified as fatal weapons of mass destruction due to their toxicity and deadly consequences. The detection and detoxification of these dangerous chemicals are critical for protection, sparking scientific interest globally. Various photoresponsive porous materials have been found highly effective for the detoxification of sulfur mustards.
Article
Chemistry, Multidisciplinary
Priyanka Kalita, Ratul Paul, Chih-Wen Pao, Rupak Chatterjee, Asim Bhaumik, John Mondal
Summary: We have developed a Friedel-Crafts alkylation strategy to synthesize a porous organic polymer, Ni@T-POP, based on a Ni-salphen complex derived from 2-hydroxy-5-methoxybenzaldehyde. X-ray absorption spectroscopy (XAS) analysis revealed the presence of Ni-N2O2 core sites in the Ni@T-POP framework, resulting in excellent catalytic efficiency for the oxidative decontamination of sulfur mustards (HD's) compared to its complex precursor.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Amitesh Roy, Najirul Haque, Ritayan Chatterjee, Surajit Biswas, Asim Bhaumik, Mitali Sarkar, Sk. Manirul Islam
Summary: A metal nanoparticle embedded catalyst AgNPs@TzTa-POP was fabricated by immobilizing silver nanoparticles on the surface of a triazinetriamine-based porous organic polymer (TzTa-POP). This catalyst showed high catalytic activity in the carboxylative cyclization of propargyl alcohols and the three component coupling reaction involving CO2, aromatic/aliphatic amine, and aliphatic/aromatic halide. It achieved high selectivity and yield for the desired products under mild reaction conditions, and maintained its activity for multiple reaction cycles.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Dip Kumar Nandi, Jhumur Seth, Pekham Chakrabortty, Swarbhanu Ghosh, Avik Chowdhury, Asim Bhaumik, Sk Manirul Islam
Summary: In this study, a composite catalyst consisting of a triazine based porous organic polymer and nickel nanoparticles was synthesized, and it showed excellent photocatalytic activity for the reduction of CO2 to methanol. The composite catalyst exhibited high surface area and low band gap, and demonstrated high catalytic efficiency and recyclability, indicating great potential for renewable carbon source methanol synthesis.
