Article
Chemistry, Physical
Tapas Goswami, Sudhanshu Naithani, Amit Kumar, Sushil Kumar
Summary: We have synthesized two easily synthesizable, reusable and morphology-controlled copper nanostructures grafted over rGO. The nanocatalysts with rod-like and spherical nanostructures promoted the one-pot multicomponent click reaction to produce a 1,2,3-triazole derivative with high yield. The nanocomposites with rod-like morphology exhibited significantly higher catalytic activity and could rapidly synthesize the desired product in pure water.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Multidisciplinary
Farideh Godarzbod, Zohreh Mirjafary, Hamid Saeidian, Morteza Rouhani
Summary: This study reported the preparation and characterization of a modified magnetic Fe3O4 nanocatalyst with immobilized palladium. The palladium nanoparticles were fixed on silica-coated Fe3O4 nanoparticles using dipicolylamine as a linker. The nanocatalyst had a spherical morphology and a high surface area. It was successfully used for the Suzuki-Miyaura coupling reaction in a water/ethanol solvent system, exhibiting mild reaction conditions and high yields. The nanocatalyst can be easily recycled and reused multiple times.
RESEARCH ON CHEMICAL INTERMEDIATES
(2022)
Article
Chemistry, Multidisciplinary
Elaheh Hataminejad, Ali Ezabadi, Abolghasem Shameli Akandi
Summary: In this study, a glycine-based ionic liquid ([Gly-H][OTs]) was synthesized and used as catalyst for the solvent-free one-pot, multi-component synthesis of 3,4-dihydropyrimidin-2(1H)ones, 14-aryl-14H-dibenzo[a,j]xanthenes and 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthene-11-ones. The prepared IL showed excellent catalytic activity with high reusability for four runs. The key advantages of this protocol are the originality of the synthesized [Gly-H][OTs], green synthesis under solvent-free conditions, high product yields, and short reaction times.
RESEARCH ON CHEMICAL INTERMEDIATES
(2023)
Article
Chemistry, Physical
Dolores Bourbiaux, Yu Xu, Laurence Burel, Firat Goc, Pascal Fongarland, Regis Philippe, Guillaume Aubert, Cyril Aymonier, Franck Rataboul, Laurent Djakovitch
Summary: Lignin is a major component of lignocellulosic biomass and can be depolymerized under mild oxidizing conditions with the Pd catalyst to produce oxygenated aromatic compounds. The richness of functional groups in lignin makes it an attractive precursor for a wide variety of aromatic compounds. Differences in selectivity in aromatic monomers may arise depending on the catalyst nature and synthetic methods used.
Article
Chemistry, Applied
Partha Kumar Samanta, Rima Biswas, Samanka Narayan Bhaduri, Shounak Ray, Papu Biswas
Summary: A copper(0) nanoparticles catalyst supported on mesoporous silica was developed for ligand-free and solvent-free C-S cross-coupling reactions, enabling the synthesis of various sulfides and sulfide derivatives with good reactivity towards different substrates. The catalyst was found to be reusable up to five times without significant loss in activity.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Shao-Tao Bai, Gilles De Smet, Yuhe Liao, Ruiyan Sun, Cheng Zhou, Matthias Beller, Bert U. W. Maes, Bert F. Sels
Summary: CO2 hydrogenation to methanol is a crucial technology for CO2 mitigation in a carbon neutral economy. Research on catalysts for this process focuses on lower temperatures, with insights gained from molecular catalysts and efficient heterogeneous catalysts using additives to convert CO2 into methanol. While progress has been made with molecular catalysts, the mechanisms with heterogeneous catalysts remain descriptive and require further research.
CHEMICAL SOCIETY REVIEWS
(2021)
Review
Chemistry, Physical
Han-Wen Cheng, Shan Wang, Guanyu Chen, Zhengwang Liu, Dominic Caracciolo, Merry Madiou, Shiyao Shan, Jincang Zhang, Heyong He, Renchao Che, Chuan-Jian Zhong
Summary: This review emphasizes the latest insights into heterogeneous catalysts under relevant reaction conditions using in situ/operando transmission electron microscopic techniques. By discussing atomic-scale and nanoscale details, it highlights the challenges and opportunities in terms of catalytic properties and design applications.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Faranak Manteghi, Fatemeh Zakeri, Owen James Guy, Zari Tehrani
Summary: A chromium-containing metal-organic framework MIL-101 was effectively used as a heterogeneous catalyst for the solvent-free synthesis of 2,4,5-trisubstituted imidazoles, showing advantages such as high efficiency, reusability, and ease of isolation. The catalytic reaction achieved a high yield in a short time, making it a promising alternative to other catalysts.
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, 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, Multidisciplinary
Nitin Tandon, Shripad M. Patil, Runjhun Tandon, Pushpendra Kumar
Summary: Novel silica-coated ferrite nanoparticles supported with montmorillonite (K-10) were successfully prepared via a simple impregnation method and characterized using various analytical techniques. These nanoparticles exhibited good catalytic activity in acylation reactions and could be easily separated and reused through an external magnetic field.
Article
Chemistry, Physical
Mahdie Saghian, Saeed Dehghanpour, Massoomeh Sharbatdaran
Summary: A strategy for incorporating nitrogen-rich units into the Cr-based MOF, MIL100-Cr, was reported, with various cyanide functional groups being utilized as efficient catalysts for carbon dioxide fixation. The presence of Lewis acid sites and cyanide groups in the framework led to high conversion rates and TON, especially for bulky substrates. The strong interaction between cyanide groups and CO2 resulted in a synergistic effect on the catalyst performance.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Chemistry, Multidisciplinary
Narayan Ch Jana, Subrat Sethi, Ratnakar Saha, Bidraha Bagh
Summary: The need for sustainable development in the modern era has led to a strong trend of research in transforming biomass into fine chemicals. This study focuses on the aerobic oxidation of lignin-derived monomeric phenolics, specifically vanillyl alcohol, to produce vanillin, an important aroma chemical. Four copper(II) complexes were synthesized and tested for their catalytic activity, with the mononuclear complex 2b displaying the best performance. The catalyst showed high selectivity and recyclability, making it a promising candidate for green and sustainable production of vanillin.
Article
Chemistry, Multidisciplinary
Sara Sobhani, Hadis Hosseini Moghadam, Seyed Ruhollah Derakhshan, Jose Miguel Sansano
Summary: This study developed a direct imination reaction by tandem reaction of alcohols and nitro compounds using Cu-isatin Schiff base-gamma-Fe2O3 as a nanomagnetically recyclable catalyst under solvent-free conditions. The method allows various imines to be prepared in good yields from one-pot reaction of different alcohols and nitro compounds, with the advantages of using an inexpensive and easily reusable catalyst, without requiring additives or excess amounts of benzyl alcohol as the reaction solvent.
Article
Chemistry, Multidisciplinary
Zainab Ehsani-Nasab, Ali Ezabadi
Summary: In this paper, an interesting Bronsted acidic dicationic ionic liquid based on piperazine was synthesized and its structure was confirmed using various techniques. The catalytic activity of this molecule in xanthene synthesis was examined, showing advantages such as high yield, short reaction time, easy recovery and reusing of the catalyst.
RESEARCH ON CHEMICAL INTERMEDIATES
(2022)
Article
Materials Science, Biomaterials
Bunty Sharma, Akhil Jain, Lluisa Perez-Garcia, Julie A. Watts, Frankie J. Rawson, Ganga Ram Chaudhary, Gurpreet Kaur
Summary: This study reports the role of metallocatanionic vesicles (MCVs) in enhancing the phototoxicity of methylene blue (MB) against cancer cells. The results demonstrate that these vesicles can significantly enhance the generation of singlet oxygen and decrease the metabolic activity of cancer cells. This study highlights the potential application of MCVs in photodynamic therapy.
JOURNAL OF MATERIALS CHEMISTRY B
(2022)
Article
Chemistry, Applied
Anjali Vijeata, Savita Chaudhary, Ganga Ram Chaudhary
Summary: This study demonstrates the successful synthesis of environmentally friendly and highly fluorescent carbon dots from Bael patra fruit, which have been utilized for the detection of food colorants and removal of heavy metals, showcasing their importance in environmental protection and food safety.
Article
Materials Science, Multidisciplinary
Prabjot Singh, Navneet Kaur, Anjali Khunger, Gurpreet Kaur, Sandeep Kumar, Ajeet Kaushik, Ganga Ram Chaudhary
Summary: This research demonstrates the synthesis of a novel double chain amphiphilic metallosurfactant complex, leading to the fabrication of monodispersed palladium nanoparticles. The green approach utilized in the synthesis allows for localized and controlled reduction of metalloaggregates, showcasing potential catalytic and biological applications of the Pd NPs.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Sushil Kumar, Ganga Ram Chaudhary, Savita Chaudhary, Ahmad Umar
Summary: This study successfully synthesized highly fluorescent and surface-functionalized gadolinium oxide nanoparticles, and enhanced the stability and solubility of the nanoprobe in aqueous media through surface modification. The nanoprobe exhibited reliable detection of cysteine in body fluids using a simple fluorescence-based methodology, with the characteristics of being economical, highly sensitive, and selective.
Article
Nanoscience & Nanotechnology
Hardeep Kaur, Vivek Anand, Ajay Sharma, Meenakshi Verma, Shweta Sareen, Surinder Kumar Mehta, Vishal Mutreja
Summary: Nowadays, greener pathways for the synthesis of nanostructures are being explored, including using plant extracts. In this study, sea buckthorn leaves were serially extracted using the soxhlet apparatus, and highly disperse silver nanoparticles were successfully prepared. The major components of the extract were identified, and their mechanisms in the formation of silver nanoparticles were investigated.
Article
Materials Science, Multidisciplinary
Mehar Singh, Abhinav Kapur, Urmila Chakraborty, Moondeep Chauhan, Gurpreet Kaur, Ajeet Kaushik, Ebrahim Mostafavi, Ganga Ram Chaudhary
Summary: This research reports the fabrication of dodecylamine-capped hafnium oxide nanomaterial for highly selective and sensitive detection of sulfide electrochemically. The fabricated sensor exhibits remarkable electrocatalytic oxidation of sulfide with fast electron transfer and nanomolar limit of detection. The method provides a green and economic approach for sulfide detection with high stability and charge density.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Applied
Namrata Richa, Eshika Kiran, Namrata Kushwaha, Eshika Jaiswal, Ajay Kumar, Jaspreet Kaur, Shalini Sharma, Alok K. Jain, Jayant Sindhu, Surinder Mehta, Vikram Saini, Ramesh Kataria
Summary: Two novel Cu(II) complexes, [CuL(S-1-amino-2-propanol)] (R1) and [CuL(S-2-amino-1-propanol)] (R2), were synthesized and characterized. The crystal structures of R1 and R2 were analyzed and found to have distorted square pyramidal geometry. R1 exhibited higher stability and stronger antimicrobial activity against Pseudomonas aeruginosa compared to R2.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Review
Chemistry, Analytical
Anjali Tomar, Reeta R. R. Gupta, S. K. Mehta, Shweta Sharma
Summary: This article summarizes a study that focuses on the optical and analytical examinations used for the characterization and detection of chemical profiles of authentic and counterfeited banknotes. It reports the introduction of new anti-counterfeiting materials such as magnetically-responsive photonic anti-counterfeiting watermarks and fluorescent nanoparticles. Furthermore, various analytical techniques including IR spectroscopy, Raman spectroscopy, X-ray diffraction, etc., along with chemometrics approaches, are critically discussed for banknote examination.
CRITICAL REVIEWS IN ANALYTICAL CHEMISTRY
(2023)
Article
Pharmacology & Pharmacy
Meenakshi Dudi, Raj Kumar, Priyanshi Saini, Aashima Sharma, Satish Kumar Pandey, Harjot Kaur, Ravinder Kumar, S. K. Mehta
Summary: In this study, OST-loaded oil in water nano-emulsion (OST-NEm) was prepared using a low-cost and highly effective ultrasonication emulsification method. The NEm showed good storage stability and stability under different salt concentrations and pH conditions. The cell viability studies confirmed the lack of toxicity of OST-NEm up to a concentration of 160 muM. OST and OST-NEm exhibited higher antioxidant potential compared to the control substance BHT.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Sangeeta Sharma, Arshpreet Kaur, Sunil Kumar, Khushboo Pathania, Kushvinder Kumar, Abhishek Arora, Surinder K. Mehta, Nikolai Petrovsky, Sangeeta P. Sah, Deepak B. Salunke, Sandip V. Pawar
Summary: In this study, an IMDQ derivative, meta-aminomethyl BBIQ, was encapsulated in biopolymer lignin nanoparticles (LNPs) to develop a slow-release delivery system and enhance its immune activating properties. The formation of spherical shaped LNPs of approximately 150 nm size was confirmed, and the release of meta-aminomethyl BBIQ from LNPs followed sustained release kinetics. The study suggests the potential use of LNPs as a drug delivery system for immune modulators or vaccine adjuvants.
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Savita Chaudhary, Manisha Kumari, Pooja Chauhan, Ganga Ram Chaudhary, Ahmad Umar, Sheikh Akbar, Sotirios Baskoutas
Summary: A one-pot methodology is developed to synthesize three types of C-dots and their activated counterparts using waste plastic precursors. Optical studies reveal significant changes in the absorption edge and luminescence behavior of the particles. The mode of interaction between C-dots and their ACs is determined using solvent-dependent fluorescence spectroscopy. This investigation provides valuable insights into the emission behavior and potential applications of the particles as fluorescent probes.
Article
Environmental Sciences
R. Chandrasekhar, Y. Satyanarayana, Ch Ramakrishna, L. Vaikunta Rao, Jaspreet Kaur, Surinder K. Mehta
Summary: This study aims to assess the groundwater quality in the coastal area of Srikakulam district, India. Groundwater is the major source for drinking and irrigation purposes in this area. The study collected groundwater samples from 20 bore wells and analyzed various physicochemical parameters. The findings showed that around 90% of the samples had extremely hard water nature and higher concentrations of sodium and chloride, indicating seawater intrusion in the coastal region.
Review
Chemistry, Multidisciplinary
Indu Sharma, Jaspreet Kaur, Gargi Poonia, Surinder Kumar Mehta, Ramesh Kataria
Summary: Environmental pollutants pose a significant threat to ecological balance and human health, necessitating their control. Metal-organic frameworks (MOFs) are porous and highly diverse materials that can be used to adsorb pollutants and detoxify the environment. Nanoscale MOFs (NMOFs) have even greater capabilities in terms of selectivity, sensitivity, detection ability, and portability. This review focuses on the synthesis of MOF nanocomposites and NMOFs, as well as their applications as nanoabsorbents, nanocatalysts, and nanosensors for various pollutants.
NANOSCALE ADVANCES
(2023)
Article
Materials Science, Biomaterials
Bunty Sharma, Akhil Jain, Frankie J. Rawson, Ganga Ram Chaudhary, Lluisa Perez-Garcia, Gurpreet Kaur
Summary: In order to address the challenges in photodynamic therapy (PDT), researchers have developed a metallocatanionic vesicles (MCVs) nanosystem loaded with Rose Bengal (RB) to enhance the phototoxicity of cancer cells. The RB-loaded CuCPC I:AOT and FeCPC I:AOT vesicles showed increased singlet oxygen generation and exhibited significant cytotoxicity against U-251 cells. These findings demonstrate the potential of dual-charge and biocompatible metallocatanionic vesicles as a promising delivery system for photodynamic therapy.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
Review
Chemistry, Analytical
Hardeep Kaur, Shweta Sareen, Meenakshi Verma, Aseem Vashisht, Ajay Sharma, Ramesh Kataria, S. K. Mehta, Jeongwon Park, Vishal Mutreja
Summary: The worldwide pollution of water bodies by potential contaminants has drawn attention to the use of carbon dots as low-cost sensing materials for water pollution detection.
CRITICAL REVIEWS IN ANALYTICAL CHEMISTRY
(2023)
