Article
Chemistry, Multidisciplinary
Samuel D. L. Holman, Alfie G. Wills, Neal J. Fazakerley, Darren L. Poole, Diane M. Coe, Leonard A. Berlouis, Marc Reid
Summary: An electrochemical method for the synthesis of substituted isoxazoline cores is presented, which can efficiently convert both aryl and alkyl aldoximes. In-situ reaction monitoring and theoretical calculations support the mechanism and reaction pathway.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Fangbo Yao, Wenruo Li, Shabrina Khainunni, Jiaojiao Ma, Choji Fukuhara, Chang Yi Kong
Summary: In this study, a simple and environmentally friendly hydrothermal method for synthesizing fragment-reduced graphene oxide (FrGO) without the use of reducing agents was reported. The FrGO was used as an electrode material for a supercapacitor. The results showed that the addition of certain additives improved the material's characteristics, leading to a higher specific capacitance and better stability. This research provides guidance for the development of electrode materials for various supercapacitor devices.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Ang Li, Miaomiao Zhai, Mingxing Luan, Jingbo Hu
Summary: Rational designing and constructing multiphase hybrid electrode materials effectively compensates for the performance defects of single component materials, with Cu2Se@Co3Se4 electrode demonstrating outstanding electrochemical performance and long lifespan.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
R. R. Samal, Aneeya K. Samantara, S. Mahalik, J. N. Behera, B. Dash, K. Sanjay
Summary: The study focuses on the synthesis of Co3O4 nanoflakes via a hydrothermal method with different surfactants and annealing temperatures, comparing their electrochemical performance. The CTAB-assisted Co3O4 exhibited superior charge storage performance and cyclic durability compared to the SLS-assisted counterpart, indicating its potential as a scalable and efficient energy storage material.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Min Ji Kim, Diana J. Wang, Karina Targos, Uriel A. Garcia, Alison F. Harris, Ilia A. Guzei, Zachary K. Wickens
Summary: We have developed a new method for the synthesis of cyclopropanes using abundant carbon pronucleophiles and unactivated alkenes. This scalable protocol exhibits high diastereoselectivity and tolerates diverse functional groups on both coupling partners.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Chemistry, Multidisciplinary
Narek Sisakyan, Gayane Chilingaryan, Aram Manukyan, Alexander S. Mukasyan
Summary: Supercapacitors are energy storage devices that have the advantage of rapid energy storage and release compared to traditional batteries. Combustion synthesis is a powerful method for creating various nanostructured materials, including those commonly used for supercapacitor electrodes. The flexibility of solution combustion synthesis allows for tuning the properties of the materials, and the resulting nanostructured materials with large specific surface area enhance the performance of supercapacitor electrodes.
Article
Chemistry, Physical
Prachi Chopade, Vikas Kashid, Niteen Jawale, Sunit Rane, Shweta Jagtap, Anjali Kshirsagar, Suresh Gosavi
Summary: This study reports the enhanced photocatalytic performance of ZnSe microspheres with high crystallinity and monodispersity through the hydrothermal method aided by ETDA. The morphology and crystal structure of the microspheres depend on the volume % of EDTA and the size depends on the volume % of hydrazine hydrate. The improved photocatalytic activity is attributed to the controlled morphology of spherical microstructures made up of small-sized ZnSe nanocrystals.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
J. Chen, C. Li, Y. Lian, Y. Chen, T. Chen, X. Hu
Summary: The study reveals that carboxyl, anhydride, and phenol groups play essential roles in the redox reaction of multiwall carbon nanotubes, which can be selectively removed by different thermal annealing temperatures. A designed carboxyl/anhydride-rich defective MWCNT shows superior specific areal capacitance, providing valuable information for electrochemical applications in supercapacitors and batteries.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Muhammad Zia Ullah Shah, Muhammad Sajjad, Hongying Hou, Shagufta BiBi, A. Shah
Summary: ZnO@ZnS nanocomposite was synthesized using a simple hydrothermal technique for the electrode of hybrid supercapacitors. The material showed good reversibility, low charge transfer resistance, and high capacitance. A hybrid supercapacitor was developed with high energy and power density, and excellent stability after repeated charge-discharge cycles.
Article
Chemistry, Multidisciplinary
Zichuan Liu, Linghui Peng, Lingling Shen, Hongbo Qiu, Weiren Fan, Tao Wang, Bocheng Zhu, Xuchuan Jiang
Summary: This study presents the synthesis of ultrafine MnO2 nanoparticles with excellent dispersibility in water through a simple one-step hydrothermal route. The nanoparticles have a uniform size of 200 nm, a large specific surface area, and a high specific capacitance.
Article
Chemistry, Applied
Nishtha Agarwal, Liam Thomas, Ali Nasrallah, Mala A. Sainna, Simon J. Freakley, Jennifer K. Edwards, C. Richard A. Catlow, Graham J. Hutchings, Stuart H. Taylor, David J. Willock
Summary: This study investigates the use of Au, Pd, and their alloys as active oxidation catalysts, with a focus on synthesizing H2O2 directly from H2(g) and O2(g). By utilizing DFT calculations, it identifies important surface species derived from dioxygen and discusses the production of H2O2 on nanoclusters. The research highlights the impact of oxygen, hydrogen, and water adsorption on the production of H2O2, emphasizing the reduction of oxides and the formation of surface hydroperoxy species.
Article
Energy & Fuels
Hsing-I Hsiang, Ya-Yun Chiou, Sheng-Heng Chung
Summary: Ternary metal sulfides with unique yolk-shell microstructure exhibit excellent electrochemical performance, making them suitable for supercapacitor electrodes.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Multidisciplinary
Elaiyappillai Elanthamilan, Sea-Fue Wang
Summary: In this study, a surfactant-assisted co-precipitation method was used to synthesize SrFe12O19. Various techniques confirmed the formation of SrFe12O19 particles. The as-prepared SrFe12O19 particles were used as electrode material in supercapacitors, showing excellent capacity behavior.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Martin Linden, Silja Hofmann, Antonia Herman, Nicole Ehler, Robin M. M. Baer, Siegfried R. R. Waldvogel
Summary: This study presents the first electrochemical approach for the direct synthesis of pyrazolines and pyrazoles from easily accessible hydrazones and dipolarophiles. The method allows for large-scale production and even conversion of highly sensitive alkenes. The use of a biphasic system with sodium iodide as a supporting electrolyte and mediator is cost-effective. Mechanistic insight is provided by the isolation of key intermediates, and the synthesis of a commercial herbicide safener further highlights the significance of this reaction.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Hem Prakash Karki, Hyojae Kim, Jinmu Jung, Jonghyun Oh
Summary: The study focuses on investigating effective energy storage devices, and demonstrates a simple synthetic approach to fabricate MoS2/Te nanocomposite for high-performance supercapacitors. The as-fabricated nanocomposite electrode material exhibits high specific capacitance, significant rate performance, and cyclic stability, indicating its promising potential for use in effective supercapacitors or energy storage devices.
Article
Chemistry, Multidisciplinary
Meera Cheviri, Senthilkumar Lakshmipathi
Summary: This study confirms the existence of redox-induced electron transfer in lithium polysulfides. Sulfur is oxidized and lithium is reduced during the electron removal from lithium polysulfides. The nucleophilic character of lithium polysulfide is influenced by the number of sulfur atoms, and the presence of an electric field enhances the reactivity of lithium polysulfides.
JOURNAL OF SULFUR CHEMISTRY
(2023)
Article
Chemistry, Physical
Thangaraj Thiruppathiraja, Senthilkumar Lakshmipathi
Summary: In this study, a N-piperidinyl-substituted trioxotriangulene (TOT) surface was constructed as a catalyst for both 2e(-) and 4e(-) pathways of the oxygen reduction reaction (ORR). Density functional theory (DFT) was used to investigate the ORR at two active sites, the O site (oxygen) and N site (nitrogen) on the N-piperidinyl-substituted TOT surface. Reactants and intermediates adsorbate chemisorb, while the product physisorbs. The results showed that the O site exhibits strong catalysis for both 2e(-) and 4e(-) pathways, and the associative mechanism in the 4e(-) pathway has low overpotential at the O-active site. These findings suggest that the N-pipeTOT surface is a potential catalyst for fuel cell applications.
Article
Chemistry, Analytical
K. Muthumalai, Nandhini Panjulingam, Mathankumar Manoharan, Yuvaraj Haldorai, Senthilkumar Lakshmipathi, Ramasamy Thangavelu Rajendra Kumar
Summary: A molybdenum disulfide (MoS2) chemiresistive sensor was fabricated for highly selective detection of nonpolar n-dodecane at room temperature. The presence of multiphase (metallic 1T phase along with the semiconducting 2H phase) MoS2 was confirmed. The multiphase MoS2 sensor showed a higher response compared to the single-phase 2H MoS2 sensor and could detect n-dodecane concentration as low as 400 ppb.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Materials Science, Multidisciplinary
V. B. Mykhaylyk, M. Rudko, H. Kraus, V. Kapustianyk, V. Kolomiets, N. Vitoratou, Y. Chornodolskyy, A. S. Voloshinovskii, L. Vasylechko
Summary: Recent research has shown that halide perovskites, particularly CsPbCl3 single crystals, exhibit excellent scintillation properties at low temperatures. These crystals emit intense narrow-band light at approximately 420 nm with fast decay kinetics, making them potentially ideal for scintillation applications that require prompt detector response at cryogenic temperatures.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Thangaraj Thiruppathiraja, Senthilkumar Lakshmipathi
Summary: The catalytic behavior of metal-free hydroxyl group (OH) functionalized single nitrogen (N-Gra(OH)(16)) and triple nitrogen (N-3-Gra(OH)(16)) doped graphene surface in the 4e(-) reduction pathway under oxygen reduction reaction (ORR) process has been studied. The thermodynamic parameters indicate that the reaction is highly exothermic and feasible with N-Gra(OH)(16) and N-3-Gra(OH)(16) as catalysts. N-3-Gra(OH)(16) exhibits better catalytic properties and is the most suitable catalyst for ORR activity.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Biochemistry & Molecular Biology
Thekkayil Sangeetha, Senthilkumar Lakshmipathi
Summary: This investigation explores the intramolecular interactions in different forms of dopamine molecules in gas and different solvent mediums. The interactions are found to be electrostatic in nature, and the stability of different forms is assessed using NBO analysis and HOMO-LUMO energy gap. The study also reveals the relationship between shielding constant and electron density in a solvent medium through H-1 NMR analysis.
JOURNAL OF MOLECULAR MODELING
(2023)
Article
Chemistry, Physical
Angappan Mano Priya, Basheer Aazaad, Vasanth Perumal Mythili, Senthilkumar Lakshmipathi
Summary: This study investigates the complete reaction mechanism of dichloromethane with OH radicals, using density functional theory and various computational methods. The most favorable reaction pathway is hydrogen atom abstraction, with a calculated rate constant that matches experimental results. The reaction has an atmospheric lifetime of 12.18 days.
COMPUTATIONAL AND THEORETICAL CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Leonid Vasylechko, Vitalii Stadnik, Vasyl Hreb, Yaroslav Zhydachevskyy, Andriy Luchechko, Vitaliy Mykhaylyk, Hans Kraus, Andrzej Suchocki
Summary: Calcium dialuminate, CaAl4O7, nanopowders doped with chromium ions were synthesized via sol-gel solution combustion method. The effects of thermal treatment temperature on the phase composition, crystal structure, and microstructure of the nanocrystalline materials were investigated. The photoluminescent properties of the CaAl4O7 nanophosphors activated with Cr3+ ions were studied, showing deep red and near-infrared luminescence.
Article
Materials Science, Multidisciplinary
Meera Cheviri, Senthilkumar Lakshmipathi
Summary: In this study, the molecular structure of pristine and defective BCN surfaces for the adsorption of lithium polysulfides was examined. Vacancies were introduced into the 2D BCN surface, and it was found that the bandgap decreased in the order of BCN > C-BCN > B-BCN > N-BCN. The adsorption of lithium polysulfides on both pristine and defective BCN surfaces was primarily through physisorption. The N-BCN surface showed good adsorption with smaller lithium polysulfides, while the C-BCN surface bound strongly with longer lithium polysulfides. Introducing vacancies in BCN surfaces improved the adsorption of lithium polysulfides, with values comparable to those of other 2D materials. Therefore, it is proposed that defective BCN surfaces can be effectively utilized as a cathode scaffold for lithium polysulfide capture in lithium-sulfur batteries.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Chemistry, Physical
Seethal Pappachan, Leonid Vasylechko, A. Rashid, Giridharan Nambi Venkatesan
Summary: An eco-friendly binary perovskite system based on K0.5Bi0.5TiO3 with a small amount of LiNbO3 was synthesized, and its influence on structural, ferroelectric, optical, and mechanical properties was analyzed. The samples, (1-x) K0.5Bi0.5TiO3-xLiNbO3, showed both the ideal cubic perovskite structure (space group Pm3m) and the tetragonal P4mm structure. The tetragonality of all samples was close to unity, indicating relaxor ferroelectric behavior. However, higher doping concentrations led to the emergence of impurity phases and distorted P-E loops, limiting the ferroelectric application. The relaxor nature of the samples resulted in low remanent polarization and enhanced energy storage properties, making KLN4 a promising candidate in the energy storage domain.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Organic
Sureshkumar Mahalingam, Ephraim Muriithi Kiarii, Thangaraj Thiruppathiraja, Arul Murugesan, Senthilkumar Lakshmipathi, Talent Raymond Makhanya, Robert M. Gengan
Summary: A novel catalyst of cesium-loaded boron nitride (Cs-BNT) was synthesized and characterized. The catalyst showed high efficiency and recyclability. Additionally, a new heterocyclic quinoline-bearing dihydropyridine compound was synthesized and characterized.
POLYCYCLIC AROMATIC COMPOUNDS
(2023)
Article
Physics, Multidisciplinary
K. Premalatha, V. K. Chandrasekar, L. Senthilkumar, M. Lakshmanan
Summary: We investigate the impact of shear on the emergence of symmetry-breaking dynamical states in a globally coupled Stuart-Landau oscillator system with attractive and repulsive interactions. Without shear, the system displays synchronization, nontrivial oscillation death states, and oscillation death states. However, the introduction of shear leads to diverse dynamical patterns, such as amplitude clusters, solitary states, complete synchronization, and nontrivial oscillation death states.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Spectroscopy
Ottoor Anitha, Thangaraj Thiruppathiraja, Senthilkumar Lakshmipathi, Balasubramanian Murugesapandian
Summary: In this study, a novel diethylaminophenol appended pyrimidine bis hydrazone (HD) probe was designed and developed. The probe showed excellent sequential sensing characteristics for Al3+ and PPi ions. Various spectroscopic techniques were used to understand the binding mechanism of HD with Al3+ ions, and the selectivity and sensitivity of the probe towards Al3+ ions were discovered. The probe was also able to consecutively detect PPi ions, and its sensing properties were utilized in constructing logic gates and for practical applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Physical
Thangaraj Thiruppathiraja, Pugal Neelam Parameswaran Senthan, Senthilkumar Lakshmipathi
Summary: Developing alternative catalyst materials to platinum for proton exchange membrane fuel cells is a necessary research direction. In this work, metal-free catalysts fluorine-functionalized nitrogen and boron-doped triangulene were used to enhance the oxygen reduction reaction as alternatives to expensive platinum catalysts. The F-functionalized N-doped triangulene showed the highest stability and excellent catalytic activity, making it suitable for PEMFC applications.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Chemistry, Multidisciplinary
Ottoor Anitha, Janardhanan Aiswarya, Thangaraj Thiruppathiraja, Senthilkumar Lakshmipathi, Jan Grzegorz Malecki, Balasubramanian Murugesapandian
Summary: A multifunctional compound was developed as an effective tool for the dual-mode fluorescent turn-on detection of Al3+ and Zn2+ ions. The compound exhibited different fluorescence colors at different wavelengths and showed good selectivity and sensitivity towards the target ions. The compound also demonstrated reversible switching characteristics upon reaction with the ions and was successfully employed in constructing a logic gate.
NEW JOURNAL OF CHEMISTRY
(2023)
