Article
Chemistry, Physical
Lyubomir Aleksandrov, Nadezhda Rangelova, Nevena Lazarova-Zdravkova, Nelly Georgieva, Mirela Dragnevska, Sanchi Nenkova
Summary: In this study, copper modified fibreboards were prepared and their existing phase, morphology, and antibacterial behavior were investigated. The results showed that the obtained copper fibreboards exhibited higher antibacterial activity against Escherichia coli, making them potential antibacterial agents for packaging and building industry.
Article
Chemistry, Multidisciplinary
Efthymia Vakalopoulou, Daniel Knez, Marco Sigl, Gerald Kothleitner, Gregor Trimmel, Thomas Rath
Summary: Silver bismuth sulfide (AgBiS2) has shown impressive properties in thermoelectric and photovoltaic applications, and has the potential to replace toxic semiconductors. A new synthesis route using metal xanthates as precursors for AgBiS2 nanocrystals has been reported. The study revealed that the decomposition and formation of AgBiS2 nanocrystals can be initiated at room temperature by the ligand's amine functionality, even though the silver xanthate is insoluble in the solvent mixture.
Article
Chemistry, Multidisciplinary
Mohammed Umar Abba, Hasfalina Che Man, Raba'ah Syahidah Azis, Aida Isma Idris, Muhammad Hazwan Hamzah, Khairul Faezah Yunos, Kamil Kayode Katibi
Summary: The study successfully developed a PVDF-PVP fiber membrane incorporating TiO2 nanoparticles, which demonstrated high flux, copper removal efficiency, and adsorption capacity, effectively eliminating copper from leachate.
Article
Chemistry, Physical
Abdur Rehman, Jianguo Feng, Tong Qunyi, Sameh A. Korma, Elham Assadpour, Muhammad Usman, Wen Han, Seid Mahdi Jafari
Summary: The rapid development of pesticide-loaded nanodelivery systems in the past decade has inspired many companies and research organizations to utilize encapsulation approaches to protect agricultural crops. These systems not only help reduce indiscriminate pesticide application and ensure environmental safety, but also enhance stability, solubility, and pest-control efficiency. The use of nanocarriers for loading pesticides can lead to more efficient and environmentally friendly pest control with lower pesticide loss, while also addressing future research gaps in nano-pesticide formulations.
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Bohdan Senyuk, Cuiling Meng, Ivan I. Smalyukh
Summary: This article highlights recent developments in the design, fabrication, and self-assembly of nematic colloidal particles, discussing their physical behaviors at the mesoscale and the capabilities of preprogramming their behavior. The article also discusses recent progress in particle-induced defects, elastic multipoles, self-assembly, and dynamics, as well as open issues and challenges in this research field.
Article
Biochemistry & Molecular Biology
Aristeidis Papagiannopoulos, Dimitrios Selianitis, Angeliki Chroni, Johannes Allwang, Yanan Li, Christine M. Papadakis
Summary: Nanoparticles based on the proteolytic enzyme trypsin were prepared using a biocompatible method. These nanoparticles co-assembled with anionic polysaccharide chondroitin sulfate at acidic conditions and were stabilized into thermally-aggregated nanoparticles that resisted disintegration at neutral pH. The nanoparticles could bind and encapsulate hydrophobic bioactive compounds, making them potentially useful for biomedical applications.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Chemistry, Inorganic & Nuclear
Sijia Tu, Chaofeng Shen, Xinghua Bai, Huihui Zhang, Sara Amirpour Amraii, Danfeng Dai
Summary: Nanotechnology provides a cost-effective way to apply metal-oxidizing nanoparticles for cardiovascular protection. Copper nanoparticles derived from Berberis vulgaris leaf extract have been found to exert cardioprotective effects against myocardial ischemia in mice. These effects may be associated with the activation of peroxisome proliferator-activated receptor gamma (PPAR-gamma) and inhibition of nuclear factor kappa B (NF-kappa B) signaling.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
R. Aruna-Devi, M. Latha, S. Velumani, Jose Alvaro Chavez-Carvayar
Summary: The concentration of copper has a significant impact on the properties of CZTS nanoparticles, affecting their optical bandgap and particle size. The right concentration of copper can lead to the desired pure phase and ideal composition of CZTS.
Article
Chemistry, Multidisciplinary
Bradley E. Cowie, Lisa Hafele, Andreas Phanopoulos, Said A. Said, Ja Kyung Lee, Anna Regoutz, Milo S. P. Shaffer, Charlotte K. Williams
Summary: This work demonstrates the use of organometallic routes for the synthesis of copper(0/I) nanoparticles and emphasizes the importance of ligand selection to achieve desired material compositions. By reacting an organo-copper precursor with hydrogen, air or hydrogen sulfide, Cu, Cu2O or Cu2S nanoparticles can be obtained. Sub-stoichiometric amounts of protonated ligands are used to avoid excess contamination, and ligand exchange reactions reveal different coordination tendencies for copper(0) nanoparticles compared to Cu2O and Cu2S. This study highlights the potential of organometallic methods for well-defined nanoparticles and underscores the significance of ligand chemistry.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Review
Chemistry, Analytical
Adrian Golebiowski, Boguslaw Buszewski
Summary: The work discusses the application of analytical techniques to characterize biological and metallic colloidal species. Various techniques are used to determine particle size distributions, molar mass, zeta-potential, and chemical speciation. These physicochemical properties are crucial in understanding colloid stabilization phenomena and their interactions with other compounds.
MICROCHEMICAL JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Zhendong Ding, Mengmiao Mo, Kai Zhang, Yongguang Bi, Fansheng Kong
Summary: In this study, PC-CS-NPs were successfully prepared and demonstrated sustainable release of proanthocyanidins, excellent scavenging ability of free radicals, and inhibitory effects on bacterial growth. The findings suggest that the use of chitosan nanoparticles can enhance the bioactivity of proanthocyanidins.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Inorganic & Nuclear
Gourab Karmakar, Adish Tyagi, G. Kedarnath, N. Naveen Kumar, Prasad P. Phadnis, Ratikanta Mishra, Mukesh Kumar
Summary: A stable Pd(II) complex with a pyridyl based selenoether ligand was synthesized and characterized, which upon thermolysis produced Pd17Se15 nanoparticles. The size of the nanoparticles was found to be influenced by the growth duration, and time dependent studies showed the involvement of Pd nanoparticles in the preparation process.
INORGANICA CHIMICA ACTA
(2022)
Article
Biophysics
Yufeng He, Mingchuan Yang, Lumin Yang, Meng Hao, Fuming Wang, Xiuli Li, Ethan Will Taylor, Xiangchun Zhang, Jinsong Zhang
Summary: Preclinical evaluations of diethyldithiocarbamate-copper complex (CuET) are limited due to poor solubility. However, bovine serum albumin (BSA)-dispersed CuET nanoparticles (CuET-NPs) have overcome this limitation and showed promising anticancer effects. These CuET-NPs selectively kill drug-resistant cancer cells with higher levels of glutathione by reacting with glutathione to form hydroxyl radicals. The similarities between CuET and CuET-NPs in terms of cytotoxicity and inhibition of cancer cell colony formation and migration demonstrate the potential of CuET-NPs for preclinical evaluations.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2023)
Article
Materials Science, Textiles
Muhammad Wasim, Muhammad A. Naeem, Muhammad R. Khan, Muhammad Mushtaq, Qufu Wei
Summary: This study describes the continuous modification of bacterial cellulose with copper/zinc nanoparticles using direct current and radio frequency magnetron sputter-coating method to enhance its hydrophobic, mechanical, and conductive properties for electromagnetic interference shielding. The results show that the bacterial cellulose/copper/zinc nanocomposite exhibits excellent performance.
JOURNAL OF INDUSTRIAL TEXTILES
(2022)
Article
Materials Science, Ceramics
I. Anila, B. B. Lahiri, Subin P. John, M. Jacob Mathew, John Philip
Summary: This study investigates the AC induction heating properties of colloidal nano-aggregates of ferrimagnetic cobalt ferrite magnetic nanoparticles (MNPs). CoFe2O4 MNPs coated with bio-compatible chitosan polymer were synthesized using co-precipitation. The presence of chitosan coating was confirmed by various spectroscopy studies. The MNPs exhibited ferrimagnetic behavior at room temperature, and the CP-CHN sample showed significantly high AC induction heating efficiency. The cobalt ferrite nano-aggregates have potential applications in magnetic hyperthermia due to their high heating efficiency and bio-compatibility.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Irina S. Edelman, Ruslan D. Ivantsov, Chun-Rong Lin, Sergey M. Zharkov, Dmitry A. Velikanov, Maxim S. Molokeev, Galina M. Zeer, Ying-Zhen Chen, Aleksandr A. Spivakov
Summary: This study investigates the effects of low concentrations of chromium doping on the morphology and magnetic properties of hematite nanoparticles. It is found that the morphology and magnetic properties of the nanoparticles change significantly with increasing chromium concentration.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Chemistry, Physical
V. G. Myagkov, L. E. Bykova, V. S. Zhigalov, A. A. Matsynin, S. M. Zharkov, A. A. Ivanenko, G. N. Bondarenko, D. A. Velikanov
Summary: We report the formation of epitaxial D03-Fe3Rh(001) films grown during solid-state reaction in Rh/Fe(001) bilayers on MgO(001) substrates. A new ordered phase, in addition to the B2-FeRh phase, was formed in Fe68Rh32 composition above 400 degrees C. The new phase is identified as the D03-Fe3Rh(001) phase, exhibiting a cube-on-cube orientation relationship with the MgO(001) substrate. The D03-Fe3Rh sample possesses high saturation magnetization and is a soft magnetic material.
Article
Chemistry, Physical
Svetlana Saikova, Aleksandr Pavlikov, Denis Karpov, Aleksandr Samoilo, Sergey Kirik, Mikhail Volochaev, Tatyana Trofimova, Dmitry Velikanov, Artem Kuklin
Summary: Copper ferrite is a material of interest due to its unique magnetic, optical, catalytic, and structural properties. The distribution of Cu and Fe cations in different positions can be controlled to tune its magnetic properties. A new method for synthesizing copper ferrite nanoparticles using an anion-exchange resin is proposed in this study. The effect of polysaccharide addition on the composition, yield, and size of CuFe2O4 is investigated.
Article
Polymer Science
Aleksandr S. S. Kazachenko, Natalia Yu. Vasilieva, Yaroslava D. D. Berezhnaya, Olga Yu. Fetisova, Valentina S. S. Borovkova, Yuriy N. N. Malyar, Irina G. G. Sudakova, Valentin V. V. Sychev, Noureddine Issaoui, Maxim A. A. Lutoshkin, Anton A. A. Karacharov
Summary: This study investigates the use of ion-exchange resins as catalysts for the sulfation of cellulose. It is found that anion exchangers form water-insoluble products, while cation exchangers form water-soluble products. Among the catalysts tested, Amberlite IR 120 is the most effective. The study also shows that an increase in sulfate groups in cellulose derivatives reduces thermal stability.
Article
Materials Science, Multidisciplinary
Evgeny T. Moiseenko, Vladimir V. Yumashev, Roman R. Altunin, Leonid A. Solovyov, Mikhail N. Volochaev, Oleg V. Belousov, Sergey M. Zharkov
Summary: This study investigates the solid-state reaction process in a multilayer thin film system (Al/Cu)50 using simultaneous thermal analysis (STA) and in-situ electron diffraction. The observed solid-state transformations are found to follow a statistically significant kinetic model with autocatalysis. The formation of theta-Al2Cu, alpha 2-AlCu3, and gamma 1-Al4Cu9 phases at different temperature stages is explained, and the corresponding kinetic parameters are determined. The experimental data support a kinetic model where the competition between the alpha 2-AlCu3 and gamma 1-Al4Cu9 phase formation stages is dominant.
Article
Materials Science, Multidisciplinary
Yulia Samoshkina, Irina Edelman, Hsiung Chou, Dmitry Petrov, Sergey Zharkov, Dmitry Neznakhin, Elena Stepanova, Andrey Stepanov
Summary: The magnetic and magneto-optical properties of cobalt nanoparticles (Co-NPs) dispersed in SiO2 and ZnO matrices have been investigated. The samples showed superparamagnetic behavior with a blocking temperature near or below room temperature. The behavior of Co-NPs was found to differ significantly from that of a solid Co film in terms of the magnetic circular dichroism (MCD) spectrum shape. The magneto-optical activity of Co-NPs in different matrices at room temperature was estimated for practical applications.
Article
Energy & Fuels
P. N. Kuznetsov, O. Yu. Fetisova, L. I. Kuznetsova, B. Avid, B. Purevsuren
Summary: The chemical composition, structure, and plastometric properties of different-ranked coals from Mongolia deposits were analyzed. The kinetics of pyrolysis for brown and bituminous coals were studied using the Ozawa-Flynn-Wall and Friedman models. The results showed that brown coal underwent three decomposition steps with increasing activation energy, while bituminous coal underwent four steps with extreme temperature dependence.
INTERNATIONAL JOURNAL OF COAL SCIENCE & TECHNOLOGY
(2023)
Article
Ecology
Olga Yu. Fetisova, Nadezhda M. Mikova, Anna I. Chudina, Aleksandr S. Kazachenko
Summary: The kinetics of pyrolysis of bark wood from four coniferous tree species were studied. It was found that the addition of KCl and K3PO4 compounds affects the decomposition temperature and yield of cellulose. Using KCl decreased the peak decomposition temperature of cellulose in fir bark, while K3PO4 promoted the simultaneous decomposition of cellulose and hemicelluloses. Both additives reduced the rate of weight loss and increased the yield of carbon residues.
Article
Chemistry, Physical
Vadim A. Borisov, Irina A. Sidorchik, Victor L. Temerev, Mikhail M. Simunin, Natalya N. Leont'eva, Ivan Muromtsev, Yuri L. Mikhlin, Anton S. Voronin, Zaliya A. Fedorova, Pavel Snytnikov, Dmitry A. Shlyapin
Summary: The study found that the activity of ruthenium catalysts for ammonia decomposition on carbonized support was 2-3 times higher compared to non-carbonized support. The release of hydrogen on carbonized support reached 133.5 mmol H2/(min•gcat), while on non-carbonized support it was only 34.7 mmol H2/(min•gcat). The activation energy for ammonia decomposition on carbonized support was also lower compared to non-carbonized support.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Physics, Condensed Matter
A. A. Krasikov, Yu. V. Knyazev, D. A. Balaev, D. A. Velikanov, S. V. Stolyar, Yu. L. Mikhlin, R. N. Yaroslavtsev, R. S. Iskhakov
Summary: In this study, nanoparticles of synthetic ferrihydrite were coated with arabinogalactan, and the samples with different degrees of coverage were characterized. The results showed that the superparamagnetic blocking temperature decreased with an increase in the degree of coverage, which was related to the different role of interparticle magnetic interactions. The analysis also revealed a decrease in the size of a cluster with correlated behaviors of nanoparticle magnetic moments with an increase in the degree of coverage, indicating the effective control of magnetic interparticle interactions by coating nanoparticles with arabinogalactan.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Engineering, Chemical
Gennadiy S. Patrin, Aleksandr V. Kobyakov, Vasiliy I. Yushkov, Igor O. Anisimov, Sergey M. Zharkov, Sergey V. Semenov, Evgeniy T. Moiseenko
Summary: This paper explores the experimental results of low-dimensional layered systems in FeNi/V2O3/FeNi film structures. V2O3, a multifunctional material, acts as an interlayer and significantly affects the metal-semiconductor transition temperature. Magnetic characteristics show that the exchange effect occurs in different regions and is influenced by the magnetic panel effect in the oxide.
Article
Chemistry, Multidisciplinary
Yuri L. L. Mikhlin, Roman V. V. Borisov, Maxim N. N. Likhatski, Oleg A. A. Bayukov, Yuriy V. V. Knyazev, Sergey M. M. Zharkov, Sergey A. A. Vorobyev, Yevgeny V. V. Tomashevich, Anastasiya D. D. Ivaneeva, Anton A. A. Karacharov, Denis V. V. Karpov, Dmitriy A. A. Velikanov, Mikhail V. V. Rautskii, Dmitry A. A. Smolyakov, Anton S. S. Tarasov
Summary: We have developed a simple hydrothermal synthesis method to fabricate 100-200 nm flakes of tochilinite (Fe1-xS)center dot n(Mg,Fe)(OH)(2), which serve as a representative of multifunctional two-dimensional materials. The formation of the flakes was ensured by using excess sodium sulfide and driven by the opposite electric charges of metal sulfide and hydroxide sheets. The characterization results show the presence of Fe3+ cations in the hydroxide layers, which can be tuned by adding Al and Li, while the Fe1-xS sheets contain high-spin Fe3+ and Fe2+ centers, as well as some S-S bonding.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Sergey M. Zharkov, Vladimir V. Yumashev, Evgeny T. Moiseenko, Roman R. Altunin, Leonid A. Solovyov, Mikhail N. Volochaev, Galina M. Zeer, Nataliya S. Nikolaeva, Oleg V. Belousov
Summary: The effect of aluminum layer on the kinetics and mechanism of aluminum-induced crystallization of amorphous silicon was investigated. It was found that increasing the thickness of the aluminum layer resulted in decreased activation energy, increased crystallization heat, and qualitative changes in the crystallization mechanism.
Article
Chemistry, Physical
Aleksandr S. Kazachenko, Natalya Yu. Vasilyeva, Feride Akman, Olga Yu. Fetisova, Yaroslava D. Berezhnaya, Anton A. Karacharov, Noureddine Issaoui, Valentina S. Borovkova, Yuriy N. Malyar, Timur Ivanenko
Summary: This study investigates different methods for preparation of agarose sulfates using nontoxic ammonium sulfamate and examines several activators and catalysts. The successful incorporation of a sulfate group into the agarose molecule has been confirmed, and the study provides important insights for the development of new agarose derivatives.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
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)