Article
Chemistry, Organic
Tom J. M. Byrne, Megan E. Mylrea, James D. Cuthbertson
Summary: This article describes a simple and efficient strategy for synthesizing substituted tetrahydrofurans from readily available cis-butene-1,4-diol. A redox-relay Heck reaction is used to quickly obtain cyclic hemiacetals, which can be directly reduced to obtain the corresponding 3-aryl tetrahydrofuran. Furthermore, these hemiacetals can also serve as precursors to a variety of disubstituted tetrahydrofurans, including the calyxolane natural products.
Article
Plant Sciences
Dale W. Prebble, Darren C. Holland, Joshua B. Hayton, Francesca Ferretti, Laurence K. Jennings, Jack Everson, Mingming Xu, Milton J. Kiefel, George D. Mellick, Anthony R. Carroll
Summary: Two new alpha-synuclein aggregation inhibitors were isolated from the extract of the marine invertebrate Polycarpa procera, which showed activity against Parkinson's disease.
JOURNAL OF NATURAL PRODUCTS
(2023)
Article
Plant Sciences
Joe Bracegirdle, Luke J. Stevenson, Abigail Sharrock, Michael J. Page, Jan A. Vorster, Jeremy G. Owen, David F. Ackerley, Robert A. Keyzers
Summary: LCMS analysis of an extract of the New Zealand tunicate Synoicum kuranui revealed numerous new rubrolides. Through a mass spectrometry-guided isolation procedure, new hydrated rubrolides V and W, along with previously reported rubrolide G, were characterized. Comparisons of their antibacterial and cell cytotoxic activities with rubrolide A showed that hydration across the C-5/C-6 bond can diminish antibacterial activity.
JOURNAL OF NATURAL PRODUCTS
(2021)
Article
Plant Sciences
Abir U. Igamberdiev, Natalia Bykova
Summary: In photosynthetic tissues, chloroplasts are responsible for energy production, while mitochondrial metabolism adjusts to maintain ATP supply and optimize key metabolic fluxes.In the presence of light, the tricarboxylic acid cycle transforms into a noncyclic open structure, supported by the exchange of malate and citrate between chloroplasts and the cytosol. This exchange supports redox energy transfer, contributes to amino acid biosynthesis, and drives secondary metabolism through substrate supply. The coordinated operation of noncoupled mitochondrial respiration and the malate and citrate valves ensures efficient respiration and photorespiration, maintaining redox and energy balance in photosynthetic cells.
Review
Biotechnology & Applied Microbiology
Kevin E. Redding, Jens Appel, Marko Boehm, Wolfgang Schuhmann, Marc M. Nowaczyk, Iftach Yacoby, Kirstin Gutekunst
Summary: The idea of replacing coal with hydrogen dates back to 1874, and sustainable hydrogen production has always been a challenge. Utilizing photosynthesis to split water and store solar energy as hydrogen is an elegant approach. Cyanobacteria and green algae, unicellular photosynthetic organisms that possess hydrogenases, have inspired artificial and semi-artificial in vitro techniques for hydrogen production. These in vitro methods have also served as models for fusing cyanobacterial and algal hydrogenases with photosynthetic photosystem I (PSI) in vivo, which has recently been successfully demonstrated.
TRENDS IN BIOTECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Zhen-Yao Dai, Pu-Sheng Wang, Liu-Zhu Gong
Summary: The asymmetric allylic C-H alkylation of 1,4-pentadienes with alpha-angelica lactones has been successfully developed using tri-axial phosphoramidite-palladium catalysis. This reaction shows high yields and good to high levels of stereoselectivity under mild conditions, allowing for the formation of versatile chiral gamma,gamma-disubstituted butenolides.
CHEMICAL COMMUNICATIONS
(2021)
Article
Polymer Science
Valeria Graur, Adrivit Mukherjee, Khaled O. Sebakhy, Ranjita K. Bose
Summary: A solvent-free route of initiated chemical vapor deposition (iCVD) was used to synthesize a bio-renewable poly(alpha-Methylene-gamma-butyrolactone) (PMBL) polymer. The resulting PMBL films exhibited high thermal stability and good optical characteristics.
Article
Cell Biology
Shun-Ling Tan, Xing Huang, Wei-Qi Li, Shi-Bao Zhang, Wei Huang
Summary: The study reveals that elevated atmospheric CO2 can mitigate PSI photoinhibition under fluctuating light by facilitating rapid oxidation of PSI and activating more electron acceptors.
Article
Plant Sciences
Xiuping Liu, Yunzhou Qiao, Wangming Zhou, Wenxu Dong, Lianhong Gu
Summary: The photosynthetic electron transport chain (ETC), which is fundamental for the balance between energy supply and demand in photosynthesis, is affected by nutrient availability and plant developmental stages. In this study, we investigated the structural controls of ETC on the photochemical reactions and electron transport by measuring chlorophyll fluorescence and gas exchange under varying environmental conditions and growth stages of maize.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Environmental Sciences
Jian Zeng, Jingru Tang, Fanglin Zhang, Yi Wang, Houyang Kang, Guangdeng Chen, Zhongwei Zhang, Shu Yuan, Yonghong Zhou
Summary: This study investigated the effects of different nitrogen forms on copper detoxification in wheat seedlings, finding that seedlings supplied with nitrate experienced more growth inhibition under excess copper compared to those supplied with ammonium. Ammonium-treated seedlings showed increased antioxidant capacity and lower redox potential, leading to reduced copper toxicity and mineral nutrient loss. The results suggest that supplying ammonium is more effective than nitrate in reducing copper phytotoxicity in wheat seedlings.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Microbiology
Kenya Tanaka, Ginga Shimakawa, Shoko Kusama, Takashi Harada, Souichiro Kato, Shuji Nakanishi
Summary: The study quantitatively assessed the reduction of ferrihydrite in conjunction with the EET of the photosynthetic microbe Synechocystis sp. PCC 6803, showing that microbial reduction of ferrihydrite was initiated in response to light but proceeded at higher rates when exogenous glucose was added, even under dark conditions. This indicates that current generation from Synechocystis cells does not always require light irradiation.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Chemistry, Physical
Nathan Stumme, Anton Sameera Perera, Andrew Horvath, Sashen Ruhunage, Darby H. Duffy, Elise M. Koltonowski, Jackson Tupper, Chad Dzierba, Alie D. McEndaffer, Craig M. Teague, Chad Risko, Scott K. Shaw
Summary: This study systematically investigated the physicochemical relationships among the solvent, electrolyte salt, and redox-active molecules in redox-flow batteries. By varying the concentrations of the redox-active molecule and electrolyte salts, the effects on diffusion coefficients, electron transfer rates, conductivity, and viscosity were analyzed. The results provide insights into the fundamental chemical interactions and can guide the development of redox-flow battery applications.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Organic
Ya-Jie Wang, Yi-Fan Wang, Wen-Yu Kang, Wen-Ya Lu, Yu-Hui Wang, Ping Tian
Summary: Here, a highly enantioselective homoenolate Michael addition/esterification sequence of cyclo-hexadienone-tethered enals via N-heterocyclic carbene (NHC) catalysis is reported, leading to the formation of enantiopure cis-hydrobenzofurans, cis-hydroindoles, and cis-hydroindenes. The introduction of a nitro group in the NHC catalyst greatly enhances the stereocontrol, while a bulky N-aryl substituent in the triazolium salt is beneficial for preventing further aldol condensation. The utility of this method is demonstrated through a gram-scale experiment and versatile downstream transformations.
Article
Chemistry, Multidisciplinary
Anna Hanft, Krzysztof Radacki, Crispin Lichtenberg
Summary: The study investigates the behavior of the redox-active aminotroponiminate (ATI) ligand in neutral and cationic bismuth compounds. The results show that switching between ligand- and metal-centered redox events is possible by altering the charge of the compounds. This adds important facets to the rich redox chemistry of ATIs and bismuth compounds.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Plant Sciences
Hazar Balti, Mejda Abassi, Karl-Josef Dietz, Vijay Kumar
Summary: In this study, three different Eucalyptus ecotypes with potential differential salt sensitivity were compared, with Eucalyptus loxophleba showing efficient K+-Na+ balance and a more dynamic range of redox changes in photosynthetic electron transport chain components.
Article
Energy & Fuels
Dayana A. Rodrigues, Antonio J. Demuner, Luiz C. A. Barbosa, Gustavo A. M. Pereira, Jose D. Fabris, Felix G. de Siqueira, Marcio T. Pereira, Abelardo Silva Junior, Otavio V. Carvalho
Summary: Both pressing and solvent extraction of Jatropha curcas seed oil produce a large amount of cake byproduct, which contains the highly toxic phorbol esters (PEs) that threaten mammal health. Various treatments, including ammonium hydroxide, urea, heat, ultraviolet radiation, and gamma radiation, were tested for their effectiveness in degrading PEs. It was found that an aqueous ammonium hydroxide solution at 70 degrees C and 3% w/w reduced the PEs content in the cake and bran to as low as 0.084 mg g(-1). The treatment with an aqueous solution NH4OH 7% w/w with heating at 90 degrees C was the most effective, reducing PEs content to 0.063 mg g(-1) (cake) and 0.066 mg g(-1) (bran), below the critical toxicity threshold of 0.1 mg g(-1). Cytotoxicity tests and nutritional assessments confirmed the safety of the treated samples, suggesting that this affordable technology could be scalable for livestock feeding at the industrial level.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Chemistry, Physical
Maicon Delarmelina, Jose Walkimar de M. Carneiro, C. Richard A. Catlow, Michael Buhl
Summary: New naphtho[2,1,8,7-klmn]xanthene and benzo[kl]xanthene-based intramolecular phosphane-borane frustrated Lewis pairs (FLPs) were studied for catalyzed H-2 activation and CO2 hydrogenation processes. According to DFT predictions, the presence of rigid scaffolds and increased P···B distances in the investigated FLPs significantly reduced the energy barrier for CO2 hydrogenation and minimized the energy differences between the transition states for H-2 activation and CO2 hydrogenation, making both processes feasible under relatively mild experimental conditions.
CATALYSIS COMMUNICATIONS
(2022)
Article
Pharmacology & Pharmacy
Monica R. Sa, Jorge M. G. Sarraguca, Francisco F. de Sousa, Mafalda S. C. Sarraguca, Joao A. Lopes, Antonio Douglas da S. G. Lima, Mateus R. Lage, Paulo R. S. Ribeiro
Summary: Co-amorphous systems have been proven to significantly improve the aqueous solubility of poorly soluble drugs while increasing the stability and dissolution rate. In this study, a co-amorphous material of TBM and TRIS was successfully synthesized, and its physical stability and enhanced solubility were confirmed through various experimental methods.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2022)
Article
Biochemistry & Molecular Biology
Renata Dalmaschio Daltoe, Leticia Batista Azevedo Rangel, Maicon Delarmelina, Klesia Pirola Madeira, Marcella Leite Porto, Silvana Santos Meirelles, Isabella dos Santos Guimaraes, Eclair Venturini Filho, Alan Reinke Pereira, Rafael de Queiroz Ferreira, Gabriel Fernandes Souza dos Santos, Izabela de Franca Schaffel, Jose Walkimar de Mesquita Carneiro, Artur M. S. Silva, Sandro Jose Greco
Summary: In this study, eight naphthoquinone derivatives were synthesized using easy, fast, and low-cost methodologies. The most cytotoxic compounds were derivatives 3-5, which showed high potential for ROS production and induced apoptosis in cancer cells. Compound 5 was found to have inhibitory ability against pERK expression.
CHEMISTRY & BIODIVERSITY
(2023)
Article
Biochemistry & Molecular Biology
Junio G. Silva, Tatiane F. Borgati, Samuel M. G. Lopes, Niels Heise, Sophie Hoenke, Rene Csuk, Luiz C. A. Barbosa
Summary: A series of amides derived from (3aR)-(+)-sclareolide were synthesized and evaluated as inhibitors for AChE or BuChE. Five amides showed strong inhibition towards BuChE, outperforming the positive control galantamine, and exhibited favorable properties for drug development, including permeability across the blood brain barrier and adherence to Lipinski rules.
BIOORGANIC CHEMISTRY
(2023)
Article
Entomology
Paula Tatiana Lopes Seixas, Antonio Jacinto Demuner, Luiz Claudio Almeida Barbosa, Cristiane Isaac Cerceau, Daiane Einhardt Blank, Marcelo Henrique Dos Santos, Elizeu de Sa Farias, Marcelo Coutinho Picanco
Summary: The larvicidal effect of essential oils from the leaves of three Artemisia species against A. aegypti was evaluated. The EO of Artemisia camphorata was found to be the most effective, with germacrene D-4-ol as the main active constituent. It can be promising for developing natural larvicides against A. aegypti.
JOURNAL OF APPLIED ENTOMOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Leticia M. Prates, Jose W. De M. Carneiro, Mauricio T. De M. Cruz
Summary: The study investigates the effects of metal-support and metal-metal interactions on catalyst performance using density functional theory. The results demonstrate the occurrence of electronic metal-support interaction, which promotes charge transfer and electronic redistribution, weakening the metal-metal interaction. Additionally, the interaction favors nucleation of a fifth palladium atom and molecular adsorption.
JOURNAL OF MOLECULAR MODELING
(2022)
Review
Biotechnology & Applied Microbiology
Simone Barera, Giuseppe Forlani
Summary: Microalgae are a promising source for renewable fuels, high-value bio-products, and nutraceuticals. However, their productivity in large-scale cultivation is often limited by sub-optimal growth conditions and sensitivity to environmental changes. Proline accumulation plays a role in stress adaptation in higher plants, but its implication in microalgae remains to be fully understood. This review summarizes the available data on proline metabolism in eukaryotic microalgae under environmental stress and discusses its potential implications for optimizing algal growth for biotechnological purposes.
JOURNAL OF APPLIED PHYCOLOGY
(2023)
Article
Biology
Laura Bagnato, Edoardo Tosato, Libero Gurrieri, Paolo Trost, Giuseppe Forlani, Francesca Sparla
Summary: Sucrose is crucial for plants as an energy source, signaling molecule, and carbon skeleton source. Sucrose phosphate synthase (SPS) converts UDP-glucose and fructose-6-phosphate to sucrose-6-phosphate, which is then dephosphorylated by sucrose phosphatase. SPS plays a critical role in sucrose accumulation, and Arabidopsis thaliana has a gene family of four SPS members with undefined functions. This study investigates the role of SPSA2 in Arabidopsis under normal and drought stress conditions, revealing its involvement in carbon partitioning and drought response.
Article
Chemistry, Inorganic & Nuclear
Joao G. de Oliveira Neto, Jailton R. Viana, Ana L. A. Butarelli, Ana P. A. dos Santos, Mateus R. Lage, Adenilson O. dos Santos
Summary: The complex mer-triaqua-(1,10-phenanthroline)-(sulfate-O)-magnesium(II) was synthesized and its structural, vibrational, and thermal properties were studied. X-ray powder diffraction (XRPD), Fourier Transform Infrared Spectroscopy (FT-IR), and thermoanalytical analyses were used. Density functional theory (DFT) calculations were also applied to analyze the vibrational modes and obtain theoretical data. The results showed the compound's structure and thermal behavior, and confirmed its antitumor activity in breast and cervical cancer cells.
INORGANICA CHIMICA ACTA
(2023)
Article
Plant Sciences
Giuseppe Forlani, Samuele Giberti, Enrico Doria
Summary: Aromatic amino acid homeostasis was investigated in cell suspension cultures of Nicotiana plumbaginifolia and was related to the activity of the first enzyme in aromatic biosynthesis, 3-deoxy-D-arabino-heptulosonate-7-phosphate (DAHP) synthase. The intracellular content of phenylalanine, tyrosine, and tryptophan showed an inverse relationship with enzyme activity levels, indicating end-product control mechanisms. The expression pattern of two DAHP synthase isogenes in wild tobacco varied during the culture growth cycle.
Article
Chemistry, Multidisciplinary
Sweta Roy, Jaime A. M. Acosta, Milandip Karak, Isabela Ramirez-Velez, Kohei Torikai, Dacheng Ren, Luiz C. A. Barbosa
Summary: The study found that certain synthesized tetronamides and denigrin compounds have significant inhibitory effects on biofilm formation of Escherichia coli, with the p-methoxybenzylidene and p-methoxyphenethyl moieties of denigrins playing important roles. Specifically, tetramethyldenigrin B exhibited strong inhibitory activity against biofilm formation and quorum sensing, making it a promising lead structure for designing better control agents.
Article
Chemistry, Physical
Jessica A. O. Rodrigues, Adriano U. Torres, Natan A. B. de Sousa, Thallysson J. D. de Sousa, Joao G. Oliveira Neto, Aramys S. Reis, Mateus R. Lage, Adenilson O. dos Santos, Clenilton C. dos Santos, Alan S. de Menezes, Francisco F. de Sousa
Summary: A coordination complex of Cu(II) with 1,10-phenanthroline and L-methionine anion was synthesized and studied using various experimental and theoretical techniques. The complex showed stable chemical properties and exhibited different electronic transition energies in water and vacuum. The complex also demonstrated antibacterial activity against both Gram-positive and Gram-negative bacteria, indicating its potential for commercialization.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Organic
Karine N. N. de Andrade, Lucas H. H. Martorano, Guilherme S. S. Correa, Fernando M. M. dos Santos Jr, Jose Walkimar de M. Carneiro, Ana Carolina F. de Albuquerque, Anne Caroline C. Gomes, Rodolfo G. G. Fiorot
Summary: C-Glycosyl-flavonoids are natural products with diverse biological applications, exhibiting rotational isomerism. The reasons for this phenomenon, which is characterized by NMR signal duplication, remain unclear. In this study, a DFT investigation was conducted to elucidate the origins of rotational isomerism in a set of C-glycosyl-flavonoids. The results revealed that the rotation around the sugar-aglycone bond at the 8-C position of the flavonoid backbone has the highest energetic barrier. By simulating solvent molecules explicitly, it was found that flavonoid-solvent interactions play a crucial role in NMR signal duplication.
ORGANIC CHEMISTRY FRONTIERS
(2023)
Review
Chemistry, Multidisciplinary
Karine N. de Andrade, Jose Renato D. Fajardo, Caio A. Leal, Jose Walkimar M. Carneiro, Rodolfo G. Fiorot
Summary: Understanding reaction mechanisms is crucial for optimizing chemical reactions. Experimentalists use suitable mechanistic proposals to choose experimental conditions, design synthetic routes, and avoid competing reactions. Computational chemistry has become an important tool for collaboration between experimentalists and theoretical chemists, providing alternative paths to help experimentalists solve their problems.
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2023)
Article
Electrochemistry
Abdul Qayoom Mugheri, Shaista Khan, Ali Asghar Sangah, Aijaz Ahmed Bhutto, Muhammad Younis Laghari, Nadeem Ahmed Mugheri, Asif Ali Jamali, Arsalan Ahmed Mugheri, Nagji Sodho, Abdul Waheed Mastoi, Aftab Kandhro
Summary: Green hydrogen has the potential to transition to a pollution-free energy infrastructure. This study proposes a solution to produce hydrogen during the photoelectrochemical process, offering greater stability and control over chemical reactions. Techno-economic assessments show the efficiency and economic feasibility of co-producing value-added chemicals to enhance green hydrogen production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Danpeng Cheng, Wuxin Sha, Qigao Han, Shun Tang, Jun Zhong, Jinqiao Du, Jie Tian, Yuan-Cheng Cao
Summary: LiNixCoyMn1-x-yO2 (NCM) is a critical cathode material for lithium-ion batteries in electric vehicles. The aging of cathode/electrolyte interfaces leads to capacity degradation and long-term cycle instability. A novel neural network model called ACGNet is developed to predict electrochemical stability windows of crystals, allowing for high-throughput screening of coating materials. LiPO3 is identified as a promising coating material with high oxidation voltage and low cost, which significantly improves the cycle stability of NCM batteries. This study demonstrates the accuracy and potential of machine learning in battery materials.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
P. Mohana, R. Yuvakkumar, G. Ravi, S. Arunmetha
Summary: This study successfully fabricates a non-noble CuO/NiO/rGO nanocomposite and investigates its electrocatalytic performance for oxygen evolution reaction in alkaline environment. The experimental results demonstrate that the electrocatalyst exhibits high activity and good stability, offering a new synthetic approach for sustainable energy production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Qiong Qu, Jing Guo, Hongyu Wang, Kai Zhang, Jingde Li
Summary: In this study, a bifunctional electrode host design consisting of carbon nanofibers implanted ordered porous Co-decorated Al2O3 supported on carbon nanotube film (CNTF) was proposed to address the shuttling effect of lithium polysulfides (LiPSs) and dendrite formation of metal lithium anode in lithium-sulfur (Li-S) batteries. The electrode exhibited excellent conductivity, efficient confinement of LiPSs, and catalytic conversion performance, resulting in high initial capacity and good capacity retention during cycling. As an anode, the electrode showed excellent Li+ diffusion performance and uniform lithium growth behavior, achieving a dendrite-free lithium electrode. The flexible pack cell assembled from these electrodes delivered a specific capacity of 972 mAh g(-1) with good capacity retention.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Hong Zhang, Jin-Peng Yu, Chen Chen, Cheng-Yong Shu, Guang-Yu Xu, Jie Ren, Kai Cui, Wen-Fang Cai, Yun-Hai Wang, Kun Guo
Summary: Spray coating of acetylene black nanoparticles onto stainless steel mesh can enhance its biofilm formation ability and current density, making it a promising electrode material for microbial electrochemical systems. The spray coating method is simple, cost-effective, and suitable for large-size stainless steel electrodes.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Binpeng Hou, Jingjin Chen, Li-Hong Zhang, Xiaowen Shi, Zizhong Zhu
Summary: The electrochemical performance of Li1.20Mn0.44Ni0.32Co0.04O2 and its oxygen-deficient phase Li1.20Mn0.44Ni0.32Co0.04O1.83 was studied through first-principles calculations. The results show that the oxygen-deficient phase has a higher theoretical capacity but lower voltage platform and higher chemical activity compared to the pristine phase.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Yating Du, Sayoko Shironita, Daisuke Asakura, Eiji Hosono, Yoshitsugu Sone, Yugo Miseki, Eiichi Kobayashi, Minoru Umeda
Summary: This study investigates the effect of high- and low-temperature environments on the charge-discharge performance of a Li-ion battery. The deterioration mechanisms of the battery at different temperatures are analyzed through various characterization techniques. The results indicate that the battery performance deteriorates more significantly at a low-temperature environment of 5 degrees C compared to higher temperatures. The understanding of the deterioration mechanisms can contribute to the development of safer battery usage methods.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Si-Si Shi, Zhi-Xiang Yuan, Fei Zhang, Ping Chen
Summary: In this study, a new nano-electrocatalyst was prepared, which exhibited superior electrocatalytic activity for the reduction of NO2- to ammonia in a neutral electrolyte, potentially due to the synergistic enhancement between Co3O4-x and Co.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Berna Dalkiran, Havva Bekirog
Summary: This study reports the use of deep eutectic solvents (DES) based on ethylene glycol and urea as low-cost and green electrolytes for enhancing electrochemical detection of natural antioxidants. The study successfully developed a disposable and effective electrochemical sensing platform for simultaneous determination of ascorbic acid (AA) and gallic acid (GA) using NaOH nanorods on a pencil graphite electrode. The proposed electrode showed improved analytical performance, with higher peak currents and shifted oxidation potentials in DES compared to BR buffer medium.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Sijun Ren, Jianguo Huang
Summary: In this study, a novel bio-inspired nanofibrous WO3/carbon composite was synthesized using a facile hydrothermal method. The three-dimensional network structure of the composite alleviated the volume expansion of WO3 nanorods and enhanced the charge-transport kinetics. The optimized composite exhibited superior lithium storage properties.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Zhilong Zheng, Yu Chen, Hongxia Yin, Hengbo Xiao, Xiangji Zhou, Zhiwen Li, Ximin Li, Jin Chen, Songliu Yuan, Junjie Guo, Haibin Yu, Zhen Zhang, Lihua Qian
Summary: This study found that interstitial Zn cations in CoMoO4 can modulate the dissolution kinetics of Mo cations and improve the OER performance. The interstitial Zn cations can prevent the dissolution of Co cations at high potential, enhancing the durability of the catalyst.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Xiaobo Lin, Shern R. Tee, Debra J. Searles, Peter T. Cummings
Summary: Molecular dynamics simulations using the constant potential method were used to investigate the charging dynamics and charge storage of supercapacitors. The simulations revealed that the water-in-salt electrolyte exhibited the highest charge storage and significantly higher capacitance on the negative electrode. The varying contributions of different electrode regions to supercapacitor performance were also demonstrated.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Wiktoria Lipinska, Vita Saska, Katarzyna Siuzdak, Jakub Karczewski, Karol Zaleski, Emerson Coy, Anne de Poulpiquet, Ievgen Mazurenko, Elisabeth Lojou
Summary: The spatial distribution of enzymes on electrodes is important for bioelectrocatalysis. In this study, controlled spatial distribution of gold nanoparticles on Ti nanodimples was achieved. The efficiency of enzymatic O2 reduction was found to be influenced by the size of the gold nanoparticles and their colocalization with TiO2. The highest stability of enzymatic current was observed with the largest gold nanoparticles.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Tariq M. Al-Hejri, Zeenat A. Shaikh, Ahmed H. Al-Naggar, Siddheshwar D. Raut, Tabassum Siddiqui, Hamdan M. Danamah, Vijaykumar V. Jadhav, Abdullah M. Al-Enizi, Rajaram S. Mane
Summary: This study explores a promising self-growth approach for the synthesis of nickel hydroxide (Ni(OH)2) nanosponge-balls on the surface of a nickel-foam (NiF) electrode. The modified NiF electrode, named Ni(OH)2@NiF, shows distinctive nanosponge-ball morphology and demonstrates excellent energy storage capability and electrocatalytic performance in both hydrogen and oxygen evolution reactions.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Rafael Del Olmo, Gregorio Guzman-Gonzalez, Oihane Sanz, Maria Forsyth, Nerea Casado
Summary: The use of Lithium-Ion Batteries (LIBs) is becoming increasingly extensive, and it is important to optimize the devices to achieve their maximum practical specific capacity. In this study, mixed ionic-electronic conducting (MIEC) binders based on PEDOT:PSS and PEDOT: PDADMA-TFSI were developed for Li-ion cathodes, and their performance was compared with conventional formulations. The influence of electrode formulations, including the addition of conducting carbon and an Organic Ionic Plastic Cristal (OIPC), was also analyzed. The proposed binders showed improved performance compared to conventional formulations with different electrolyte types and active materials.
ELECTROCHIMICA ACTA
(2024)
