Article
Materials Science, Ceramics
Kati Raju, Seunghwan Moon, Minwook Kim, Ha-Neul Kim, Hyun-Kwuon Lee, Jaehun Cho
Summary: This work presents a cost-effective and environmentally friendly approach to prepare high-quality and highly-crystalline silicon nitride (Si3N4) powders from silicon (Si) scrap. The method involves optimizing ball milling parameters with different solvents to obtain homogeneous and fine-micron sized silicon powders, and performing direct nitridation to produce Si3N4 powders. The results show that this approach offers a solution to recycle Si waste and produce cost-effective and high-quality Si3N4 powders.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Textiles
Meiping Chen, Chao Ma, Change Zhou, Zhiguang Li, Rong Li
Summary: The water-resistant antibacterial PVA nanofibers containing curcumin and silver nanoparticles were prepared using electrospinning, and the AgNps were prepared by in situ reduction. The functional properties of the prepared nanofibers, including moisture permeability, antibacterial activity, anti-inflammatory activity, and antioxidant activity, were evaluated. The results showed that the nanofiber membrane possessed excellent properties, such as high swelling rate, good mechanical properties, biocompatibility, and bacteriostatic activities, with no cytotoxicity. The Cur/AgNPs composite nanofibers can be used as potential medical dressings with antibacterial, anti-inflammatory, and antioxidant properties.
FIBERS AND POLYMERS
(2023)
Article
Materials Science, Textiles
Meiping Chen, Chao Ma, Change Zhou, Zhiguang Li, Rong Li
Summary: Water-resistant antibacterial PVA nanofibers containing curcumin and silver nanoparticles were prepared and evaluated for their physical properties and antibacterial, anti-inflammatory, and antioxidant functions. The results showed that the nanofibers exhibited excellent mechanical properties, biocompatibility, and activities against bacteria, inflammation, and oxidative stress without cytotoxicity.
FIBERS AND POLYMERS
(2023)
Article
Pharmacology & Pharmacy
Jong-Ju Lee, Linh Dinh, Juhyun Park, Rama Khraisat, Jun Woo Park, Jae Kwan Jeong, Juseung Lee, Hyun Sil Kim, Moo Suk Park, Jun-Hyun Ahn, Sung-Joo Hwang
Summary: This study prepared lysozyme-loaded liposomal dry powder inhalers using various non-ionic surfactants and characterized their properties. The results showed that the formulation with a drug to PS 80 ratio of 1:0.5 w/w maintained protein activity while demonstrating good aerosol performance.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2023)
Article
Orthopedics
Geordie C. Lonza, Frank Yuan, Felix M. Pham, Christine T. Wright, Anthony Arellano-Kruse, John Andrawis
Summary: A study compared the effectiveness and cost of liposomal bupivacaine and a pain pump for pain management after total knee arthroplasty. The results showed no significant difference between the two in terms of average pain scores, 30- and 90-day readmissions, and emergency department visits. Liposomal bupivacaine was associated with cost savings.
JOURNAL OF ARTHROPLASTY
(2023)
Article
Engineering, Chemical
Jianquan Jing, Xiangyu Zhang, Lei Gao, Fubing Gao, Hongbiao Huo, Songchao Shi, Wangjian Cheng, Chuanhao Xu, Jingyu Wang, Chongwei An
Summary: Continuous preparation of energetic microspheres has become a goal pursued by researchers in recent years. This paper combines the pipe control method with suspension self-assembly technology to design and build a pipestream control device, which was applied to prepare multi-scale HMX-based microspheres with high sphericity and narrow particle size distribution. The average particle sizes of microspheres have a significant correlation with the process parameters. The flowability, bulk density of HMX-based microspheres and mechanical properties of charges have been significantly improved.
Article
Agricultural Engineering
Wangfang Deng, Yidong Zhang, Meiyan Wu, Chao Liu, Guang Yu, Bin Li, Yanjun Tang
Summary: In this study, a facile and clean process of lithium bromide trihydrate (LBTH) pretreatment of hardwood dissolving pulp (HDP) was conducted to simplify the preparation of carboxylated cellulose nanofibrils (TOCNF) using the 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)/NaBr/NaClO catalytic oxidation system. The LBTH pretreatment improved the reaction efficiency and reduced the use of chemicals, leading to increased carboxyl content and shorter oxidation time of the TOCNF.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Materials Science, Multidisciplinary
Zhipeng Zhang, Ge Zhou, Chen Tian, Haoyu Zhang, Feng Li, Qi Shi, Xin Liu, Lijia Chen
Summary: Flexible control of atomization pressure and bar material feeding speed was achieved during the preparation of TC11 alloy 3D-printing spherical powder, leading to improved powder quality and yield.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Environmental
Ye Liu, Huijie Liu, Jian Xiong, Ailin Li, Rongwu Wang, Liming Wang, Xiaohong Qin, Jianyong Yu
Summary: This study designed and fabricated luffa-inspired electrospun nanofiber based aerogels in an eco-friendly and simple way, showing excellent performance in solar vapor generation with high light absorption rate and fast evaporation rate, efficiently converting solar energy into clean water resources.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Jihong Pang, Xing Qin, Yue'e Ni, Jingran Wang, Anyi Yu, Jinhua Zhang
Summary: In this study, spherical amorphous boron particles with an average size of 380 nm were successfully prepared using a novel silicothermic reduction method. The low-viscosity melt in the reaction system facilitated the reduction and absorption of silica, a water-insoluble by-product. The improved silicothermic reduction produced alkali silicate as a by-product, which could be easily separated and serves as an important recyclable industrial material.
Article
Obstetrics & Gynecology
Nikolaos Kathopoulis, Ioannis Chatzipapas
Summary: The study shows that smartphone technology can be used for cable-free, wireless, and cost-effective diagnostic mobile office hysteroscopy. By coupling a 2mm-diameter hysteroscope to a smartphone with a LED light source, a new cable-free setup was developed at considerably lower cost compared to traditional endoscopic towers. The new technique was found to be acceptable for diagnosis in 97.5% of cases, with good image resolution, brightness, color, and overall quality.
OBSTETRICS AND GYNECOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Nurul Nadirah Suteris, Amina Yasin, Izan Izwan Misnon, Rasidi Roslan, Farah Hanani Zulkifli, Hanani Zulkifli, Mohd Hasbi Ab Rahim, Jayarama Reddy Venugopal, Rajan Jose
Summary: This study demonstrates the development of nanofibrous cloths loaded with curcumin for regenerative medicine applications. The optimized nanofiber scaffolds show improved swelling behavior and drug release properties, promoting fibroblast proliferation and actin expression for wound healing.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Chemistry, Physical
J. Prakash, K. S. Venkataprasanna, G. Bharath, Fawzi Banat, R. Niranjan, G. Devanand Venkatasubbu
Summary: Graphene-based dressings with biocompatibility and antimicrobial properties have shown potential in wound healing. The developed CA/GO/TiO2/curcumin nanofiber demonstrated significant antibacterial activity and improved wound healing, along with exceptional hemocompatibility and biocompatibility.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Pharmacology & Pharmacy
Cristina Scomoroscenco, Mircea Teodorescu, Cristina Lavinia Nistor, Ioana Catalina Gifu, Cristian Petcu, Daniel Dumitru Banciu, Adela Banciu, Ludmila Otilia Cinteza
Summary: This study aimed to develop new microemulsion systems for topical use and identify a suitable water-soluble polymer for gel microemulsions. The efficacy of the developed microemulsion and gel microemulsion systems in delivering curcumin into the skin was also studied. A pseudo-ternary phase diagram was developed using specific ingredients, and physicochemical characterization and in vitro permeation studies were conducted.
Article
Biophysics
Shuwen Sun, Mingqian Hao, Chuanbo Ding, Jinping Zhang, Qiteng Ding, Yiwen Zhang, Yingchun Zhao, Wencong Liu
Summary: Electrospinning-based wound dressings with multiple functions are crucial for skin wound care. In this study, a composite nanofibrous membrane loaded with phlorizin (PHL) was developed, which showed excellent permeability and antibacterial activity. The nanofiber was found to accelerate wound healing and inhibit the expression of specific proteins at the wound site. This mechanism may be associated with the inhibition of a certain signaling pathway, which requires further investigation.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Energy & Fuels
Merin Mary Sebastian, Parthiban Velayudham, Alex Schechter, Nandakumar Kalarikkal
Summary: This study reports a novel NiFe2O4/MoS2 composite electrocatalyst, which exhibits excellent activity in both oxygen reduction reaction and oxygen evolution reaction. The composite shows high electrocatalytic performance, good stability, and low cost, making it a potential candidate for energy conversion and storage applications.
Article
Chemistry, Multidisciplinary
Saju Daniel, Saju Joseph, Padmanabhan Sridharan Alapat, Nandakumar Kalarikkal, Sabu Thomas
Summary: A novel multimedia laminated system has been successfully fabricated to provide high-performance electromagnetic interference (EMI) shielding. The fabricated nanocomposite showed significantly high EMI shielding efficiency and can be used as a smart and lightweight shielding material for future EMI shielding applications.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Polymer Science
Abitha Vayyaprontavida Kaliyathan, Ajay Vasudeo Rane, Sabu Thomas
Summary: This paper discusses the influence of increasing concentration of carbon black (CB) on the physical and mechanical properties of SBR/BR rubber blends. The partitioning of CB towards the BR phase is quantitatively determined and confirmed using dynamic mechanical analysis (DMA) and solid-state nuclear magnetic resonance spectroscopy (SS-NMR spectroscopy). The results show that increasing CB concentration increases its partitioning towards the BR phase, affecting the properties and dispersion characteristics of the material.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Lata Samant, Alka Goel, Jessen Mathew, Seiko Jose, Sabu Thomas
Summary: This study investigates the effect of different surface treatments of flax fiber on the mechanical properties of the natural fiber reinforced natural rubber composites. The results show that flax fibers with a length of 1.25 cm and a volume loading of 40% exhibit higher tensile strength. Furthermore, treating the flax fibers with NaOH and laccase enhances the mechanical properties of the composites.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Physics, Applied
Seetha Lakshmy, Ajit Kundu, Nandakumar Kalarikkal, Brahmananda Chakraborty
Summary: The first-principles density functional theory method was used to investigate adsorption configurations, adsorption energies, electronic properties, and gas sensing characteristics of holey graphyne (HGY) monolayer decorated with transition metals (Sc, Pd, and Cu) for the detection of ammonia (NH3). Among the three metals, Sc decorated HGY showed the potential for ammonia sensing due to its reasonable adsorption energy, large charge transfer, and achievable recovery time. The stability of Sc decorated HGY structure at ambient temperature was also validated using ab initio molecular dynamics simulations. This study suggests the possible application of 2D HGY-based gas sensors for ammonia detection.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Polymer Science
Abitha Vayyaprontavida Kaliyathan, Ajay Vasudeo Rane, Sabu Thomas
Summary: This research aims to investigate the partitioning of carbon black in miscible styrene butadiene rubber/butadiene rubber blends. DMA and TEM were used to determine the partitioning and dispersion of carbon black in the blends. The study provides valuable insights for academics and industrial researchers in the field of rubber composites.
JOURNAL OF RUBBER RESEARCH
(2023)
Review
Materials Science, Multidisciplinary
Saju Joseph, Jainy Mohan, Seetha Lakshmy, Simil Thomas, Brahmananda Chakraborty, Sabu Thomas, Nandakumar Kalarikkal
Summary: Transition metal dichalcogenides (TMDs) have emerged as one of the most promising and widely accepted categories of 2D materials. Researchers have been exploring alternative semiconducting 2D materials due to the absence of a bandgap in graphene. TMDs' unique optical and electronic properties have made them excel in fundamental research and novel device applications.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
T. Daniel Thangadurai, N. Manjubaashini, A. Sowndarya, A. Subitha, G. Kausalya, S. Shanmugaraju, I. Ahmad, Sabu Thomas, Nandakumar Kalarikkal
Summary: This study reports the synthesis of carbon nanodots (CNDs) from rice husk biomass waste using a hydrothermal method. The synthesized CNDs exhibit amorphous nature with hexagonal graphite structure, spherical morphology with an average size of 25-30 nm, and functional groups and defects confirmed by spectral analyses. The CNDs show outstanding cell viability, anti-inflammatory activity, and bright bioimaging characteristics.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Textiles
Sneha George, Sabu Thomas, Namitha Nandanan Nedumpillil, Seiko Jose
Summary: In this study, fibers were extracted from water hyacinth plant using a specially designed decorticating machine. The extracted fibers were subjected to aerobic and anaerobic retting, followed by alkali treatment. The physical and mechanical properties, as well as the chemical composition and structural characteristics of the fibers, were analyzed. The results showed that the fibers could be easily extracted after 5 days of retting. The alkali treatment significantly improved the tensile strength and crystallinity of the fibers.
JOURNAL OF NATURAL FIBERS
(2023)
Article
Polymer Science
Prajitha Velayudhan, Jibin Keloth Paduvilan, Bindu Patanair, Sisanth Krishnageham Sidharthan, Abitha Vayyaprontavida Kaliyathan, Nicolas Delpouve, Allisson Saiter-Fourcin, Sabu Thomas
Summary: In this research, the hybrid reinforcements of silica with either graphite or graphene oxide in natural rubber were studied. The addition of GO/SiO2 with a 3:1 ratio showed a synergistic reinforcement effect, significantly improving both strength and modulus while maintaining decent strain at break levels. The experimental data correlated well with the Guth Gold model, suggesting that filler/matrix interactions primarily govern the mechanical properties. The calometric response of the nanocomposites at the glass transition was analyzed, and the 3:1 GO/SiO2 composition showed the highest glass transition temperature and the most efficient filler intercalation.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Seetha Lakshmy, Gopal Sanyal, Nandakumar Kalarikkal, Brahmananda Chakraborty
Summary: This study investigates the potential of BeN4 monolayer as a gas sensor for NH3 by analyzing its sensing capacity and adsorption energy, and concludes that the introduction of Be vacancy enhances NH3 adsorption due to improved charge transfer.
Article
Optics
P. K. Nideesh, C. S. Chitra Lekha, R. Antoine, N. Kalarikkal
Summary: This article explores the statistics of spectral features, particularly shot-to-shot intensity fluctuations, in a potassium sodium niobate-dye colloidal system used as a random lasing platform. Correlations between spectral intensity fluctuations were analyzed, along with the underlying physical process and spectral characteristics. Pearson correlation coefficients were calculated and correlation plots were generated to better understand the correlations. The spectral position and spacing of the spikes were also examined to gain insights.
OPTICS AND LASER TECHNOLOGY
(2024)
Review
Materials Science, Multidisciplinary
Nideesh Padiyakkuth, Sabu Thomas, Rodolphe Antoine, Nandakumar Kalarikkal
Summary: Random lasers are optical devices that utilize scattering media for optical feedback, resulting in low spatial coherence. They have applications in speckle-free imaging, sensing, and light therapy. The properties of gain and scattering materials are crucial for random lasers. Advanced materials and nanostructures have the potential to overcome the limitations of random lasers.
MATERIALS ADVANCES
(2022)
Article
Chemistry, Multidisciplinary
Rekha Rose Koshy, Arunima Reghunadhan, Siji K. Mary, Kiran Thomas, K. R. Ajish, Sabu Thomas, Laly A. Pothen
Summary: pH-sensitive intelligent film is an innovative packaging material that can visually detect changes in ammonia and acidity. The study found that films incorporated with anthocyanin showed distinguishable color changes in different pH buffers and demonstrated good sensitivity for ammonia detection. This food-grade material can be used to detect spoilage of meat and seafood, as well as monitor ammonia concentration in fish farming ponds.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Polymer Science
Aswathi Madathinal Kunjappan, Arunima Reghunadhan, Ajitha A. Ramachandran, Moothetty Padmanabhan, Lovely Mathew, Sabu Thomas
Summary: The current research provides clear evidence of the reinforcement effect of multi-walled CNTs in the PTT/PE blended system. The combination of PE with PTT decreases the brittleness of PTT and increases the impact and tensile strength of the blend nanocomposites. Adding 1 wt % MWCNT increases the impact strength by 254%. The concentration of 2 wt % MWCNT shows the most favorable effects in terms of enhancing tensile strength, Young's modulus, and elongation at break.
POLYMER-PLASTICS TECHNOLOGY AND MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Zihan Ma, Lishuang Wang, Tingting Chen, Guangning Wang
Summary: In this study, two kinds of 3D self-doped (N/O) lilac-based and coriander-based porous carbons with high performance have been prepared.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Qin Wang, Yun-Fan Yan, Jiao-Lin Weng, Ying Huang, Fu Yang, Hao-Hui Xie, Fei Tan, Fa-Kun Zheng, Jian-Gang Xu
Summary: Balancing energy and mechanical sensitivities is a challenging issue in the field of energetic materials. This study constructed a 3D energetic metal-organic framework with nitrogen-rich ligand and NO3- anions. The framework demonstrated high stability, energy density, and excellent mechanical sensitivities, making it a potential insensitive energetic material.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Marrium Saeed, Urooj Kamran, Amina Khan, Md Irfanul Haque Siddiqui, Hasan Jamal, Haq Nawaz Bhatti
Summary: In this study, magnesium-aluminum layered double hydroxides (Mg-Al-LDH) were synthesized using an environmentally friendly hydrothermal technique for adsorbing the dye reactive green 5 (RG5). To improve the adsorption capability, composites were prepared by combining Mg-Al-LDH with low-cost Mangifera indica stone biomass (MISB). The results showed that the composites had high adsorption capacities for RG5 dye and could be regenerated.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Xuanlin Zhan, Xiaojie Li, Yunyan Zeng, Siyan Jiang, Chao Pan, Shiyu Pan, Jiaquan Huang, Heqian Zhang, Zhiwei Qin
Summary: This study reports on the potential prospects of natural products derived from the rhizosphere for the development of antibiotics and herbicides, as well as the advancements in cultivating a mutant strain that produces a substantial quantity of lydicamycins, a potent family for herbicide development.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Jie Zhu, Jiangtao Yu, Linhua Zhu, Xiaoxiao Yu, Jixing Liu, Yanhong Chao, Jingzhou Yin, Peiwen Wu, Jian Liu, Wenshuai Zhu
Summary: This study successfully demonstrates the 3D printing of attapulgite monoliths and investigates the influence of thermal treatment on their properties. The thermal treated monoliths show superior catalytic performance at low temperatures.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yanzhu Ye, Yixiang Ye, Jiannan Cai, Zhongshui Li, Shen Lin
Summary: In this paper, a novel Pt/CoP/C photo-electro synergistic catalyst was successfully synthesized and its performance was investigated. The catalyst exhibited excellent photo-electro catalytic performance, with significantly higher hydrogen production compared to a commercial catalyst. The introduction of cobalt phosphide and the existence of Co3O4 were identified as key factors for enhancing the catalytic activity.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Nurul Hidayah Abu Bakar, Wan Norfazilah Wan Ismail, Hartina Mohd Yusop, Noreen Farzuhana Mohd Zulkifli
Summary: Hydrophobic coatings inspired by the lotus effect have gained popularity for their ability to solve various problems. The sol-gel method, utilizing silica, alumina, and titania, is explored as an environmentally friendly approach to produce water-based hydrophobic coatings. This study focuses on producing water-based hydrophobic coatings for cotton and polyester fabrics using a one-step sol-gel method. The coated fabrics exhibited improved hydrophobic properties, altered surface morphologies, and lower air permeability compared to uncoated fabrics. TEOS-PDMS coating provides a promising approach for enhancing the hydrophobic and surface properties of cotton and polyester fabrics.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Nikita Belko, Hanna Maltanava, Anatol Lugovski, Polina Shabunya, Sviatlana Fatykhava, Evgeny Bondarenko, Pavel Chulkin, Sergey Poznyak, Michael Samtsov
Summary: This study investigates the difference in electrochemical behavior between rhodamine B hydrazide and rhodamine B acylhydrazone, and finds that rhodamine B acylhydrazone exhibits higher reversibility in electrooxidation. These results can be applied for developing new sensors with desired electrochemical properties.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Showket Ahmad Bhat, Mohd Ikram
Summary: In this study, 0-3 particulate multiferroic composites were synthesized and characterized. The composites exhibited excellent ferroelectric and ferromagnetic properties, as well as high piezoelectric strain and magnetoelectric coupling effects.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Carla Gomes, Mariana Costa, Susana M. M. Lopes, Bernardo Albuquerque Nogueira, Rui Fausto, Jose A. Paixao, Teresa M. V. D. e Melo, Luisa M. D. R. S. Martins, Marta Pineiro
Summary: The development of sustainable processes requires the integration of green chemistry principles. In this study, a solvent-free synthesis method was developed to prepare new copper catalysts, which efficiently catalyze cycloaddition reactions under solvent-free mechanochemical conditions. Through this process, the principles of atom economy, reduction of solvents and auxiliaries, design for energy efficiency, and reduction of derivatives and catalysis are combined.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Zhihua Liu, Jinzhe Li, Jianguo Zhou
Summary: This study demonstrates the enhancement of photoelectrochemical activity of BiFeO3 photoelectrodes through ion modification, which increases visible light absorption and active area, leading to improved PEC water splitting performance.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yisheng Zhang, Wensong Li, Jing Li, Fang Li, Wei Xue, Xinqiang Zhao, Yanji Wang
Summary: Pt/C and SO42-/ZrO2 were used as catalysts for the synthesis of p-aminophenol through the catalytic transfer hydrogenation of nitrobenzene in water with formic acid as the hydrogen source. The optimal Pt loading for PAP selectivity was found to be 1 wt%. The presence of different valence states of Pt affected both the nitrobenzene hydrogenation and formic acid decomposition. Among different solid acid catalysts tested, SO42-/ZrO2 exhibited the highest catalytic activity for p-aminophenol formation. Under the optimized reaction conditions, the conversion of nitrobenzene reached 80.0%, with a selectivity of 47.6% for p-aminophenol.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Pradyota Kumar Behera, Papita Behera, Amlan Swain, Santosh Kumar Sahu, Ajeena Sahoo, Laxmidhar Rout
Summary: We have developed a simple and direct method for the synthesis of diaryl ether using an oxygen bridged bimetallic CuMoO4 nanocatalyst under mild reaction conditions. The catalyst exhibited tolerance towards a wide range of substrates with various functional groups. It is efficient and recyclable. This methodology allows easy access to nitrofen derivatives (herbicides) from unactivated 2,4-dichlorophenol, which are important for agriculture and pharmaceuticals.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yihua Fu, Yan Zhang, Changwei Hu, Zhishan Su
Summary: The mechanism of the reaction between CO2 and styrene oxide for cyclic carbonate was revealed using density functional theory calculations. The noncatalytic reaction occurred via a concerted mechanism, while in the presence of guanidine and tetrabutylammonium iodide (TBAI) co-catalysts, the epoxide ring-opening by nucleophilic attack of an iodide anion was predicted to be the rate-determining step. Guanidine acted as the H-bond donor to activate styrene oxide, facilitating the reaction with a lower activation barrier.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Saikat Khamarui, Sirshendu Ghosh
Summary: Copper nanorods (Cu-NRs) exhibit significant plasmonic behavior and can act as efficient catalysts in redox processes and coupling. A benign decarboxylative approach, utilizing localized surface plasmon resonance (LSPR) assisted catalysis with Cu-NRs, has been developed for the production of alkane analogues from alkyl carboxylic acids under visible light. The catalyst shows a broad substrate scope and high functional group tolerance, without the need for an external oxidant or proton source. A plausible mechanism for this recyclable nano-catalyst has also been proposed based on control experiments.
NEW JOURNAL OF CHEMISTRY
(2024)
