Article
Engineering, Environmental
Heba Ali, A. M. Ismail, A. A. Menazea
Summary: In this study, Ag/ZnO/chitosan ternary bio-nanocomposites were prepared by laser ablation method, which exhibited antibacterial effectiveness, enhanced UV-visible barrier characteristics, and boosted catalytic reduction properties. The composite film showed improved thermal stability and maintained high removal efficiency even after four cycles.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Chemistry, Physical
Hanan B. Ahmed, Nourhan Saad, Hossam E. Emam
Summary: By anchoring palladium nanoparticles on chitin to create a recyclable nano-catalyst, the efficient reductive degradation of organic pollutants can be achieved rapidly with excellent recyclability.
SURFACES AND INTERFACES
(2021)
Article
Engineering, Environmental
Dongdong Li, Pingle Liu, Yiru Zheng, Yi Wu, Le Ling, Liting Chen, Fang Hao, Yang Lv, Wei Xiong, He'an Luo
Summary: In this study, a catalyst was prepared by modifying chitosan and silver nanoparticles on high purity sepiolite, which showed efficient oxidation and degradation of HCHO at low temperatures.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Pooja Rani, Rajender S. Varma, Karanpal Singh, Roberto Acevedo, Jagpreet Singh
Summary: A waste leaf extract can be used to generate cost-effective gold and gold-silver core-shell nanoparticles, which exhibit improved catalytic and antibacterial capabilities compared to single-metal nanoparticles. This method is effective in removing contaminants from water and countering antibiotic resistance, and it is cost-effective and sustainable.
Article
Chemistry, Applied
Xiuyun Ma, Xiaolin Yu, Maofa Ge
Summary: Ag supported on Co3O4 catalysts prepared by one-pot solvothermal method showed excellent catalytic activity for benzene oxidation, with higher oxidation activity and lower reaction temperature. The catalysts also exhibited outstanding long-term thermal stability.
Article
Chemistry, Inorganic & Nuclear
Sumit Ringwal, Ankit S. Bartwal, Satish C. Sati
Summary: In this research, Ag-MgO nanocomposites were synthesized using peel extract as a renewable reducing and stabilizing agent. The synthesized nanocomposites were characterized and found to exhibit excellent catalytic activity for the reduction of toxic dyes and antioxidant activity comparable to butylated hydroxy toluene.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Environmental Sciences
Deepak Pathania, Arush Sharma, Smita Kumar, Ashok Kumar Srivastava, Ajay Kumar, Lakhveer Singh
Summary: A simple, effective and rapid green method using leaf extract of Melia azedarach was explored for the synthesis of Cu-ZnO nano heterojunction particles in the present study. The synthesized material showed high efficiency as a photocatalyst for degrading chlorpyrifos pesticide in simulated wastewater. Different factors such as solution pH, catalyst dosage and contact time were investigated to optimize the degradation process, with the highest degradation rate (91%) observed at pH 6.0. LC-MS analysis revealed no harmful side products during the degradation process.
Article
Chemistry, Physical
Debotra Sarkar, Lisa Groll, Dominik Munz, Franziska Hanusch, Shigeyoshi Inoue
Summary: The aryl(imino)stannylene (Mes)Ter[N(IDipp)]Sn, stabilized by the NHI ligand, enables the sequestration and valorization of CO2 to C1 feedstock stoichiometrically, as well as catalytically. The NHI ligand plays a key role in the CO2 reduction process, rationalized by experimental and computational analysis.
Article
Engineering, Biomedical
Mahwish Bashir, Farzana Majid, Summeya Akram, Adnan Ali, Shaimaa A. M. Abdelmohsen
Summary: The purpose of this study was to organize stabilized tetragonal zirconia nano-particles using microwave abetted sol-gel technique. Gelatin and microwave heating were used as structure guiding methods. XRD analysis showed that low gelatin content resulted in phase pure tetragonal zirconia, and the hardness increased with gelatin content. Raman spectra presented characteristic peaks of tetragonal zirconia. Scanning electron microscope images revealed that increasing gelatin content decreased porosity and improved particle distribution.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2022)
Article
Chemistry, Physical
Chun He, Yuhong Liao, Cheng Chen, Dehua Xia, Yongyi Wang, Shuanghong Tian, Jingling Yang, Dong Shu
Summary: A novel process for S-VOCs degradation using wet scrubbing coupled with catalytic ozonation was developed, and Ag/R-MnO2 catalyst exhibited superior performance in wet catalytic ozonation process. The efficient electron replenishing interaction between Ag(0)/Ag(I) and multivalent R-MnO2, efficient O3 activation through oxygen vacancies-rich R-MnO2, and enhanced mass diffusion in wet scrubbing process contribute to the excellent performance.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Environmental
Raissa Aparecida da Silveira Rossi, Leilei Dai, Marcos Antonio de Souza Barrozo, Luiz Gustavo Martins Vieira, Carla Eponina Hori, Kirk Cobb, Paul Chen, Roger Ruan
Summary: This study investigates the catalytic microwave-assisted pyrolysis of microalgae in a tandem catalytic bed, aiming to reduce the formation of unwanted compounds and enhance aromatic hydrocarbon production. The results show that the hydrotalcite catalyst promotes de-acidification and de-nitrification reactions, while the zeolite catalyst converts intermediate compounds into hydrocarbons. The maximum hydrocarbon and benzene yields are achieved at a temperature of 500 degrees C and a NiHTC/SiC:NiHZSM-5/SiC catalyst ratio of 1:1. The study also provides important data on energy recovery and bio-oil quality during the catalytic pyrolysis of microalgae.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Anandhakumar Sukeri, Swati Panigrahi, Kothandaraman Ramanujam
Summary: This article presents a method for preparing metal-free hydride stabilized boron nanosheets without using noble metal growth substrates, and demonstrates their potential in reduction and Li-ion battery applications.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Analytical
Tingting Gong, Lei Liao, Bingying Jiang, Ruo Yuan, Yun Xiang
Summary: In this study, a fluorescent biosensing system for high sensitivity detection of MT was established using a new Ag+-stabilized DNA triplex probe (Ag+-SDTP) combined with catalytic hairpin assembly (CHA) and CRISPR/Cas12a signal enhancements. The sensing method is able to selectively detect MT from other non-specific molecules and can achieve low level detection of MT in diluted human serums, demonstrating its potential for monitoring disease-specific MT biomarker at trace levels.
Article
Engineering, Chemical
Kun Wang, Xun Zhu, Rong Chen, Dingding Ye, Yang Yang, Qiang Liao
Summary: In this study, silver nanoparticles were prepared on polydopamine microspheres as surface plasmon catalysts for the conversion of 4-nitrophenol. It was found that under light conditions, the reaction rate constant increased by 53.6% due to the surface plasmon resonance effect. The transition state theory was used to explain the enhanced mechanism of the catalytic conversion of 4-nitrophenol under light conditions.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Ravikant Verma, Anisa Basheer Khan, Arvind Kumar, Ashutosh Kumar Amar, Naveen Kumar, Tulsi Satyavir Dabodiya, Bittesh Barman
Summary: Toxic chemical contaminants from textile and pharmaceutical industries have been causing pollution in water bodies. This study demonstrates the potential of green synthesized nanoparticles in degrading these contaminants, suggesting their potential application in water treatment.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Review
Chemistry, Applied
Yalda Rangraz, Majid M. Heravi
Summary: The development of methodologies for carbon-nitrogen bond formation is crucial in organic synthesis, as the resulting products are widely used in pharmaceuticals, biologically active compounds, and natural products. Recently, nanosized metal catalysts have gained significant attention for their excellent catalytic performance, high product yields, mild reaction conditions, and environmental sustainability. This review provides an overview of the latest progress in the fabrication of nanocatalysts and their applications in constructing carbon-nitrogen bonds via cross-coupling reactions.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Polymer Science
Zahra Izadi, Mehdi Nekoomanesh-Haghighi, Samahe Sadjadi, Mostafa Ahmadi, Naeimeh Bahri-Laleh
Summary: This study assessed the replacement of AlCl3 with other Al-based compounds or an environmentally friendly deep eutectic solvent (DES) in alpha-olefin oligomerization. The results showed that using DES as the main component of the initiating system not only reduces the need for hazardous and corrosive Al compounds, but also favors the production of low viscosity PAO oils, which have a significant share in the PAO market.
Article
Chemistry, Physical
Samahe Sadjadi, Neda Abedian-Dehaghani, Xuemin Zhong, Majid M. Heravi, Peng Yuan
Summary: Three different acidic ionic liquids were grafted onto halloysite to form heterogeneous catalysts. The catalysts exhibited higher acidity than halloysite, which varied depending on the type of ionic liquid. Among them, imidazolium-based ionic liquid showed the highest catalytic activity.
APPLIED CLAY SCIENCE
(2023)
Article
Chemistry, Physical
Xuemin Zhong, Peng Yuan, Samahe Sadjadi, Dong Liu, Yanfu Wei
Summary: Palygorskite-supported ruthenium catalysts were developed for the efficient and selective oxidation of HMF to DFF. The catalyst exhibited excellent performance with 100% HMF conversion, 98% DFF yield, and 98% DFF selectivity under optimal reaction conditions. The synergistic effect of Ru nanoparticles and palygorskite enhanced the catalytic activity.
APPLIED CLAY SCIENCE
(2023)
Article
Chemistry, Applied
Masoume Malmir, Majid M. Heravi, Ghazaleh Jahani
Summary: Metal-organic frameworks (MOFs) are viable and environmentally friendly alternatives to traditional catalysts, and the magnetic Ox-CN-Cu-MOF catalyst has shown remarkable catalytic performance due to its unique structure and Lewis acidic properties. It also exhibits excellent recyclability.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Abolfazl Heydari, Milad KhajeHassani, Haniyeh Daneshafruz, Sepideh Hamedi, Faeze Dorchei, Mario Kotlar, Fahimeh Kazeminava, Samahe Sadjadi, Farideh Doostan, Ivan Chodak, Hassan Sheibani
Summary: This study developed a nanocomposite material consisting of thermoplastic starch (TPS) reinforced with bentonite clay (BC) and encapsulated with vitamin B2 (VB). The study investigated the effects of VB on the physicochemical properties of TPS/BC films, including mechanical and thermal properties, water uptake, and weight loss in water. The addition of VB significantly increased the tensile strength and Young's modulus of TPS/BC films, with the highest values observed for nanocomposites containing 5 php of VB and 3 php of BC. The release of VB was controlled by the BC content, with higher BC content leading to lower VB release. These findings demonstrate the potential of TPS/BC/VB nanocomposites as environmentally friendly materials with improved mechanical properties and controlled release of VB, which can have significant applications in the biopolymer industry.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Biotechnology & Applied Microbiology
Masoumeh Bagheri Bisafar, Masoume Malmir, Majid M. Heravi
Summary: In this study, a novel magnetic MOFs-based catalyst was synthesized and showed good catalytic activity and stability for the reduction of nitroarenes and organic dyes. The catalyst can be easily separated and recovered by magnetic separation, and it can be reused for multiple cycles.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Polymer Science
Samahe Sadjadi, Abolfazl Heydari
Summary: In this study, a novel composite material was developed by combining β-cyclodextrin nanosponge and sodium alginate to immobilize palladium nanoparticles. The composite beads demonstrated excellent encapsulation capabilities and stability, making them suitable for hydrophobic substrates. The incorporation of cyclodextrin nanosponge within alginate beads improved the performance of the catalyst, allowing selective reduction of the nitro group in substrates with competing functionalities.
Article
Chemistry, Physical
Zahra Izadi Kahkeshi, Naeimeh Bahri-Laleh, Samahe Sadjadi, Mehdi Nekoomanesh Haghighi
Summary: Four novel ionic liquid compounds supported on boehmite were synthesized and used with AlCl3 to polymerize Raffinate 1 to polybutene for viscosity improver applications. The supported ionic liquids were characterized using various analytical techniques. The introduction of the supported ionic liquids resulted in polybutenes with comparable Mn and D values to the blank AlCl3 system but with lower exo-olefins content, making the copolymer more suitable for the target application. The suggested AlCl3/ionic liquid initiating system enables greener polymerization by reducing the dosage of hazardous AlCl3 compared to the blank system.
MOLECULAR CATALYSIS
(2023)
Article
Chemistry, Physical
Miad Mashayekhi, Leila Moballegh, Naeimeh Bahri-Laleh, Samahe Sadjadi, Albert Poater
Summary: This study proposes the reevaluation of a trident cationic initiator system with ionic liquid (IL)/AlCl3/H2O in the cationic polymerization of 1-decene. Different ILs with different cationic moieties were synthesized and evaluated. The IL/AlCl3 system exhibited better performance than the AlCl3/H2O system, improving the molecular weight and viscosity index of the resulting polymer.
MOLECULAR CATALYSIS
(2023)
Article
Biochemistry & Molecular Biology
Alireza Mohammadi, Mohammad Kazemeini, Samahe Sadjadi
Summary: A triple photocatalytic composite was prepared and utilized for the photodegradation of Rhodamine-B (RhB) dye. The highest yield of 96.2% was achieved under specific conditions, and Methyl Orange (MO) dye was also successfully degraded. The kinetic and thermodynamic parameters were determined, and a chemical mechanism was proposed. The catalyst showed significant adsorption capacity and could be reused for multiple cycles with minimal activity loss.
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
(2023)
Article
Multidisciplinary Sciences
Zahra Yekke-Ghasemi, Majid M. Heravi, Masoume Malmir, Masoud Mirzaei
Summary: In this study, a tri-component composite Zr/SiW12/GO was prepared using an ultrasonic-assisted method. This composite, acting as a remarkable heterogeneous catalyst, showed exceptional catalytic performance in the oxidation reaction of sulfides to sulfoxides. The composite also demonstrated exceptional stability and could be reused up to four times without significant loss in its catalytic activity.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Inorganic & Nuclear
Alireza Bayat, Zohreh Mehri Lighvan, Samahe Sadjadi, Naeimeh Bahri-Laleh, Ali Ghadimi
Summary: A star-like hybrid composite of metal-organic framework with amino-functionalized Fe-based MOF and ZIF components was embedded in chitosan beads and cross-linked with glutaraldehyde to stabilize Pd nanoparticles. The catalytic composite displayed excellent performance in hydrogenation reaction, yielding the product with high conversion and low bromine index under mild reaction conditions. Moreover, the catalyst showed recyclability and little Pd leaching, making it promising for large-scale applications.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Fardin Saghandali, Mohammad Kazemeini, Samahe Sadjadi
Summary: In this study, three Keggin-type heteropolyacids were impregnated on halloysite to produce heterogeneous acidic catalysts for synthesizing 5-HMF. The role of halloysite in the catalyst's acidic properties and performance was found to be important. The reaction parameters for the optimal catalyst were adjusted using Response Surface Methodology, resulting in a 99.5% yield of the target compound after 43 minutes at 125 degrees C in DMSO solvent. Immobilization of silicotungstic acid on halloysite significantly reduced leaching-out, with only a 12.5% loss of activity in five consecutive reaction cycles. The catalyst's activity was also tested on converting different carbohydrates to 5-HMF, with glucose showing the highest product yield of 64.24%. Furthermore, the kinetic and thermodynamic parameters of the conversion of fructose to 5-HMF were determined.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Multidisciplinary Sciences
Samahe Sadjadi, Sara Tarighi, Motahareh Delangiz, Majid Heravi
Summary: Through a novel hierarchical zeolite catalyst, efficient conversion of glycerol to solketal with a yield of 98% was achieved. The experimental results indicate that the mesoporosity of zeolite and the functionality of ionic liquid play important roles in catalytic performance.
SCIENTIFIC REPORTS
(2023)