Article
Chemistry, Physical
Anup Paul, Anirban Karmakar, M. Fatima C. Guedes da Silva, Armando J. L. Pombeiro
Summary: Two new 1D CPs have been prepared and characterized, showing potential as heterogeneous catalysts for tandem reactions under environmentally friendly conditions.
Article
Chemistry, Multidisciplinary
Pritam Dolui, Vikas Tiwari, Parul Saini, Tarak Karmakar, Koushik Makhal, Harshita Goel, Anil J. Elias
Summary: An efficient, metal-free, catalyst-free and solvent-free method for the reductive amination of levulinic acid with different anilines has been developed using HBpin as the reducing reagent. This method provides an excellent approach to synthesize different N-substituted pyrrolidones without the need for solvents or added catalysts under metal-free conditions. It is also the first report on the synthesis of different pyrrolidones using solvent-free and catalyst-free methods. The proposed mechanism for pyrrolidone formation has been supported by DFT calculations and control experiments.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Physical
Zahra Yekke-Ghasemi, Majid M. Heravi, Masoume Malmir, Masoud Mirzaei
Summary: Two nano-sized monosubstituted POMs catalysts were synthesized and characterized for cyanosilylation reaction, showing high efficiency and recyclability.
CATALYSIS COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Xiyuan Yu, Shengshen Meng, Shuqi Liu, Yuhan Yang, Baogang Liu, Longfeng Zhu, Xuebo Cao
Summary: The study successfully synthesized beta zeolite enriched with polymorph B under solvent-free conditions without the presence of fluorine species. The phase composition of polymorph B in the sample is around 70%.
DALTON TRANSACTIONS
(2022)
Article
Environmental Sciences
Saeed Rajabi, Alireza Nasiri, Majid Hashemi
Summary: In this study, the degradation of Metronidazole using CuCoFe2O4@MC/AC catalyst synthesized by microwave-assisted method was investigated, which showed high degradation efficiency under optimized conditions. Characterization of catalyst structure was conducted using various analytical techniques. Kinetic equations indicated that MNZ degradation followed pseudo-first-order and Langmuir-Hinshelwood kinetics models based on the coefficient of determination.
Article
Chemistry, Multidisciplinary
Dewu Lin, Don N. Futaba, Kazufumi Kobashi, Minfang Zhang, Shun Muroga, Guohai Chen, Takashi Tsuji, Kenji Hata
Summary: A microwave-assisted, solvent-free approach is used to directly functionalize carbon nanotubes (CNTs), allowing for the design and fabrication of multifunctional nanocarbon-based materials.
Article
Chemistry, Applied
Vikas G. Yadav, Vijaykumar L. Chavan
Summary: This study presents the synthesis and characterization of an environmentally friendly and cost-effective Pd-heterogeneous catalyst. The catalyst, Pd-SB/MNP, showed remarkable efficiency in catalyzing the reduction of nitroarene and Cr(VI) under mild reaction conditions. It can be easily recovered through external magnetization and has minimal Pd loss, making it suitable for efficient recycling and reutilization.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Junhui Miao, Dajun Wu, Xiaorui Gao, Wei Wang, Wangping Wu, Shi Tao, Yong Fang, Zhida Han, Bin Qian, Xuefan Jiang, Lei Zhang
Summary: Ni3S2/rGO nanoparticles ensemble synthesized on nickel foam demonstrates superior capacitive performance compared to bare Ni3S2, especially Ni3S2/rGO electrode with 20 mg GO precursor (Ni3S2-20) shows the highest specific capacitances among all samples studied. The design of fast and facile synthesis provides new insight into developing novel composite electrodes for energy storage applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Tianxiang Liu, Fei Xue, Ziren Chen, Zhen Cheng, Wei Cao, Bin Wang, Weiwei Jin, Yu Xia, Yonghong Zhang, Chenjiang Liu
Summary: Ketones play a crucial role in pharmaceuticals, food additives, and organic synthesis. Efficient and environmentally friendly selective oxidation cleavage of olefins is important for ketone synthesis. This study utilized a bismuth-rich Bi4O5Br2 photocatalyst, obtained through a microwave method, as a heterogeneous catalyst under visible-light irradiation. By using water/dioxane as the solvent and molecular oxygen as the oxygen source, various ketones were obtained in moderate to good yields. The catalyst exhibited stable activity over four cycles and the oxidative cleavage of C=C double bonds was attributed to superoxide radicals or photogenerated electrons and holes.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Xiaoshen Bai, Divakar R. Aireddy, Amitava Roy, Kunlun Ding
Summary: Depolymerization of condensation polymers often requires solvents and homogeneous catalysts, but suffer from poor interfacial contact with solid plastics. This study discovers a spontaneous heterogeneous catalyst layer on the surface of polyethylene terephthalate during the homogeneous catalytic depolymerization process, and demonstrates that the construction of solid-plastic interfaces enables solvent-free depolymerization at relatively low temperatures. The introduction of trace amounts of zinc by electrostatic adsorption is sufficient for catalyzing the depolymerization. The concept of plastic-catalyst contact mass interfacial catalysis could inspire new approaches to address plastic waste problems.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Applied
Siming Ding, Yuanyuan Kong, Yuichi Manaka, Wang-Jae Chun, Ikuyoshi Tomita, Ken Motokura
Summary: The use of water as a reaction solvent is ideal for green chemistry, but carrying out catalytic reactions with transition metal catalysts in aqueous media is challenging. To enhance the scope of allylation reactions in water, a series of Pd diphosphine complexes co-immobilized with organic groups onto mesoporous silica supports was synthesized. The newly synthesized catalyst demonstrated improved catalytic allylation performance in water, expanding the toolkit of transition-metal-catalyzed reactions in aqueous media. The results have far-reaching consequences in academia and industry due to the wide use and scope of allylation reaction.
Article
Chemistry, Physical
Wenliang Wang, Jiale Huang, Yishuai Fu, Weikun Jiang, Yutong Chen, Yujun Ma, Sizhe Han
Summary: In this study, a 3D porous Fe-MoS2/CMF catalyst with nanoflower microstructure was successfully synthesized by a simple one-step hydrothermal method, which effectively improved the yield of target monophenols and enhanced the economic competitiveness of lignin valorization. Experimental results revealed that Fe doping increased the efficiency of the catalytic conversion reaction and promoted the cleavage of the beta-O-4 ether bond, in line with theoretical calculations. Finite element simulation also demonstrated that the Fe-MoS2/CMF catalysts can create hot spots on the surface to enhance the local thermal effect, facilitating the lignin vapor reforming.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Agricultural Engineering
Helena Poy, Estela Lladosa, Adrian Arcis, Carmen Gabaldon, Sonia Loras
Summary: This study investigates a new green and cost-effective biomass pretreatment method using microwave irradiation and a ternary deep eutectic solvent (DES) for the efficient conversion of rice straw. The results show that under mild pretreatment conditions, the DES can achieve high delignification and nearly complete conversion of polysaccharides in the rice straw, indicating its potential for improved valorization of biomass polysaccharides.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Energy & Fuels
Chunlin Luo, Shuai Liu, Gang Yang, Peng Jiang, Xiang Luo, Yipei Chen, Mengxia Xu, Edward Lester, Tao Wu
Summary: In this study, (CNTs-Fe3O4)-Co nanocomposites were designed as microwave-responsive catalysts and showed enhanced hydrogen generation rate. The results revealed that microwave irradiation could boost the HGR of the (CNTs-Fe3O4)(1:4)-Co (10 wt%) catalyst from 75.0% to 95.4% compared to conventional heating. The synergistic effect of cobalt and Fe3O4 sites in the (CNTs-Fe3O4)(1:4)-Co (10 wt%) catalyst was confirmed through various Co loadings and DFT calculations.
Article
Engineering, Environmental
Fuyang Liu, Zhengmao Li, Qiqi Dong, Chenyi Nie, Shuai Wang, Boaiqi Zhang, Peng Han, Meiping Tong
Summary: This study demonstrates that the PI activated by solar irradiation can efficiently disinfect bacteria in water. The PI/solar system shows excellent performance under different conditions, including various pH levels, humic acid concentrations, and ionic strengths.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Somayeh Zolfagharinia, Eskandar Kolvari, Nadiya Koukabi, Maliheh M. Hosseini
ARABIAN JOURNAL OF CHEMISTRY
(2020)
Article
Biochemistry & Molecular Biology
Parisa Akbarzadeh, Nadiya Koukabi, Eskandar Kolvari
MOLECULAR DIVERSITY
(2020)
Article
Biochemistry & Molecular Biology
Parisa Akbarzadeh, Nadiya Koukabi, Eskandar Kolvari
MOLECULAR DIVERSITY
(2020)
Article
Chemistry, Applied
Parisa Akbarzadeh, Nadiya Koukabi
APPLIED ORGANOMETALLIC CHEMISTRY
(2020)
Article
Chemistry, Analytical
Nafiseh Esmaeili, Jamshid Rakhtshah, Eskandar Kolvari, Hamid Shirkhanloo
MICROCHEMICAL JOURNAL
(2020)
Article
Biochemistry & Molecular Biology
Nafiseh Esmaeili, Jamshid Rakhtshah, Eskandar Kolvari, Alimord Rashidi, Hamid Shirkhanloo
Summary: The developed method utilizing MWCNTs@DMP as the solid phase and ionic liquid for extraction successfully separated and analyzed organic and inorganic lead in human samples with low LOD, high enrichment factor, and high adsorption capacity.
BIOLOGICAL TRACE ELEMENT RESEARCH
(2021)
Article
Biochemistry & Molecular Biology
Alireza Foroughnia, Aliakbar Dehno Khalaji, Eskandar Kolvari, Nadiya Koukabi
Summary: A new chitosan Schiff base and its nanocomposite were synthesized and characterized, showing excellent efficiency in methyl orange removal and antibacterial activities. The presence of iron oxide nanoparticles in the nanocomposite may have contributed to its unique properties.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Materials Science, Multidisciplinary
Alireza Marandi, Eskandar Kolvari, Maryam Gilandoust, Mohammad Ali Zolfigol
Summary: This study developed a catalyst by anchoring -OSO3H on activated carbon powder for synthesizing 1H-indazolo[1,2-b]phthalazine-tri-one and quinolines derivatives under solvent-free conditions. The fabricated AC-OSO3H catalyst demonstrated high efficiency and exhibited features of being practical, green, and safe.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Physical
Eskandar Kolvari, Alireza Marandi, Neda Kheyroddin
Summary: Translation: Catalysts, especially heterogeneous catalysts, are important in organic transformation reactions. In this study, a composite of cellulose nanocrystals (CNC) and Fe3O4 NPs was used as a support for indium(III) and evaluated for its performance as a catalyst in the synthesis of heterocyclic compounds. The addition of CNC to Fe3O4 NPs improved stability and suitability of the catalyst. The use of sustainable materials, low-cost chemicals, short reaction time, high catalytic activity, magnetic features, easy separation, and excellent reusability were identified as the significant advantages of this catalyst.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Environmental Sciences
Armin Sanei, Kheibar Dashtian, Jaber Yousefi Seyf, Farzad Seidi, Eskandar Kolvari
Summary: The emergence and spread of new diseases caused by unplanned industrialization and the use of antibiotics has resulted in serious concerns regarding the remediation of wastewater containing antibiotics. In this study, a coral-shaped alpha-Fe2O3/ZnO/reduced graphene oxide composite photocatalyst was prepared from basil seed as a sustainable biomass resource. The photocatalyst exhibited excellent performance in the photodegradation of the antibiotic oxytetracycline (OTC) under visible light irradiation, achieving a degradation efficiency of 98% within 90 minutes.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Chemistry, Organic
Mahnaz Sakhdari, Ali Amoozadeh, Eskandar Kolvari
Summary: The study utilized magnetic nanoparticle-supported sulfonic acid as an efficient catalyst to achieve high-purity products in a short time, with features such as green and recyclable catalysts, eco-friendly conditions, easy recovery, and high yields.
HETEROCYCLIC COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Eskandar Kolvari, Ali Arab, Maryam Robati
EURASIAN CHEMICAL COMMUNICATIONS
(2020)
Article
Chemistry, Organic
Fuying Zhu, Yamei Lin
Summary: In this study, a low-metal iron-supported catalyst (Fe20/NC-Mg) was reported for the efficient synthesis of quinoxaline compounds, using water as a solvent and without additional bases. The synergistic effect of FeNx site and Mg (OH)2 nanorods in the catalyst played a key role in achieving high yields (82-91%) in 16 examples. The gram-level synthesis and reusability of the catalysts after four cycles demonstrated its industrial application potential.
Article
Chemistry, Organic
Mikhail Kozlov, Alexey Tyurin, Andrey Dmitrenok, Vyacheslav Rusak, Aleksander Fedorov, Igor Zavarzin, Yulia Volkova
Summary: This study presents a novel and practical synthesis method for phosphorus-substituted 1,3,4-thiadiazolines using phosphorylthioformic acid hydrazides and ketones. The protocol demonstrates operational simplicity, availability of reagents, and tolerance towards different functional groups.
Article
Chemistry, Organic
Jisna Jose, Thomas Mathew
Summary: 2-Cyclopentenone and its derivatives are highly esteemed synthetic intermediates with exceptional utility in organic synthesis. They are favored structural motifs in numerous pharmaceutical drugs and natural products, highlighting their significance. The review discusses the various methods used to synthesize cyclopentenones from 2016 to 2023.
