Chemistry - An Asian Journal最新文献_第2页

Sulfur-Doped Nickel Ferrite for Green Hydrogen at High Current Density.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-01-02 DOI: 10.1002/asia.202401000

Deepa Rosh Tom, Ayushi Shah, Krishna H Modi, Ajay Majethiya, Pratik M Pataniya, C K Sumesh

{"title":"Sulfur-Doped Nickel Ferrite for Green Hydrogen at High Current Density.","authors":"Deepa Rosh Tom, Ayushi Shah, Krishna H Modi, Ajay Majethiya, Pratik M Pataniya, C K Sumesh","doi":"10.1002/asia.202401000","DOIUrl":"https://doi.org/10.1002/asia.202401000","url":null,"abstract":"The primary obstacle in electrolyzing water is that prolonged large-current operation quickly degrades performance, making it difficult to achieve efficient and continuous hydrogen evolution at high current densities. This work prepared sulfur-doped nickel ferrite nanocomposites using the simple hydrothermal method to improve electrocatalytic green hydrogen production at high-current densities. X-ray diffraction (XRD), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS) were used to analyze the crystalline structure, morphology, and chemical composition of the synthesized nanocomposites. The prepared S-NiFe2O4/NF (NS-85/NF) catalyst exhibits excellent electrochemical water-splitting activity, a low overpotential, a high current density, and extended stability lasting more than 12 hours. The NS-85/NF electrode has a cathodic current density of 300 mA cm-2 at -0.329 V overpotential and at the lowest overpotential of -0.264 V, the electrode has a current density of 100 mA cm-2. Our work provides new approaches to developing earth-abundant, stable, scalable, and highly effective catalysts for high-current density water electrolysis.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401000"},"PeriodicalIF":3.5,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142913362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of the molecular level interaction in [CH3OH-CH2X2] complexes (X = I, Br, and Cl) using matrix-isolation IR spectroscopy.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-01-02 DOI: 10.1002/asia.202401313

Shamik Chakraborty, Amrita Chakraborty, Sumit Kumar Agrawal

引用次数: 0

Diastereoselective Synthesis of Highly Functionalized γ-Lactams via Ugi Reaction/Michael Addition. 通过乌基反应/迈克尔加成法非对映选择性合成高功能化 γ-内酰胺。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-01-02 Epub Date: 2024-11-09 DOI: 10.1002/asia.202400917

Herika D A Vidal, Paulo S G Nunes, Alice K A Martinez, Marcelo A P Januário, Pedro H O Santiago, Javier Ellena, Arlene G Corrêa

引用次数: 0

End Group Effects on Anion Binding in Tetraglycine Peptide: A Computational Study. 端基对四甘氨酸肽阴离子结合的影响：计算研究

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-01-02 Epub Date: 2024-11-16 DOI: 10.1002/asia.202400880

Monalisha Sarma, Manash Pratim Sarmah, Manabendra Sarma

{"title":"End Group Effects on Anion Binding in Tetraglycine Peptide: A Computational Study.","authors":"Monalisha Sarma, Manash Pratim Sarmah, Manabendra Sarma","doi":"10.1002/asia.202400880","DOIUrl":"10.1002/asia.202400880","url":null,"abstract":"The importance of anions in various processes has led to a search for molecules that can effectively recognize and interact with these anions. This study explores how the tetraglycine [(Gly)4] peptide in its zwitterionic, neutral, and terminally capped forms acts as a receptor for H2PO4 - and HSO4 - anions within the framework of supramolecular host-guest chemistry. Using molecular dynamics (MD) simulations, we obtained the conformations of the receptor-anion complexes. Density functional theory (DFT), quantifies the complexes' interaction energies in both gas and solvent phases. Proton transfer within the zwitterionic complex with H2PO4 - anion alters peptide charge distribution, affecting its conformation and binding site arrangement, as analysed by quantum mechanics/molecular mechanics (QM/MM) methods. Symmetry-adapted perturbation theory (SAPT) and noncovalent interactions analysis highlight the role of electrostatic interactions in these receptor-anion complexes. It emphasizes the key interactions such as N-H⋅⋅⋅⋅O and O-H⋅⋅⋅O=C between the peptide backbone and anions and elucidates the molecular recognition mechanism driven by crucial noncovalent interactions. The termination of the peptide's end groups modulates anion binding sites from the backbone to the charged N-terminal, resulting in distinct binding sites. Our findings provide insights for designing peptides tailored to function as anion receptors in diverse supramolecular chemistry applications.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202400880"},"PeriodicalIF":3.5,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142379654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual Au/Ag Catalyzed Regiospecific Intramolecular Hydroacyloxylation and Hydroalkoxylation of Unactivated Geminal-Substituted Olefins. 金/银双重催化未活化双子醛取代烯烃的分子内特异性加氢酰氧基化和加氢烷氧基化。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-01-02 Epub Date: 2024-11-16 DOI: 10.1002/asia.202401093

Akash D Dhuri, Kiran Kumar Pulukuri

引用次数: 0

Access to Vinyl Gem-Difluorinated Cyclopropanes Via Photopromoted Palladium-Catalyzed Heck Reaction. 通过光促进钯催化赫克反应获得乙烯基二氟化环丙烷。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-01-02 Epub Date: 2024-11-13 DOI: 10.1002/asia.202400775

Bin Li, Qiu-Shi Feng, Jia-Li Yuan, Ying Xia

引用次数: 0

A Convenient Approach for the Synthesis of Multidentate N-Heterocyclic Carbene Ligand Precursors. 合成多叉 N-杂环羰基配体前体的便捷方法。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-01-02 Epub Date: 2024-11-09 DOI: 10.1002/asia.202401085

Naresh Kumar Meher, Anubhab Kashyap, K Geetharani

引用次数: 0

In Situ Catalyzed Growth of Carbon Nanotube with Asphalt Cladding as a Bicarbon Synergistic Framework of Silicon Anodes for Lithium-ion Batteries. 原位催化碳纳米管与沥青包层的生长，作为锂离子电池硅阳极的双碳协同框架。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-01-02 Epub Date: 2024-11-19 DOI: 10.1002/asia.202400838

Yiming Liu, Jianzheng Duan, Pengfei Chen, Peihua Li, Wanggang Zhang, Xiaohong Li, Jian Wang

{"title":"In Situ Catalyzed Growth of Carbon Nanotube with Asphalt Cladding as a Bicarbon Synergistic Framework of Silicon Anodes for Lithium-ion Batteries.","authors":"Yiming Liu, Jianzheng Duan, Pengfei Chen, Peihua Li, Wanggang Zhang, Xiaohong Li, Jian Wang","doi":"10.1002/asia.202400838","DOIUrl":"10.1002/asia.202400838","url":null,"abstract":"Silicon, as the most promising advanced anode material for lithium-ion batteries, faces challenges in large-scale industrial production due to the significant volume expansion effect. In this investigation, Si/CNTs/C composite materials were effectively produced through high-temperature carbonization utilizing asphalt, silicon, hexahydrate ferric chloride, and melamine as primary elements. The distinctive dual-carbon framework of asphalt-derived carbon and carbon nanotubes alleviates the volume expansion of silicon, thereby stabilizing the composite material's structure. Testing the electrochemical performance reveals that the Si/CNTs/C composite material exhibits a reversible specific capacity of 1187 mAh g-1 with a capacity retention rate of 92.6 % after 150 cycles at a current density of 0.2 A g-1. Even after 500 cycles at a current density of 1 A g-1, it sustains a specific capacity of 879.4 mAh g-1 with a capacity retention rate of 87.9 %, showcasing outstanding electrochemical performance.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202400838"},"PeriodicalIF":3.5,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142542243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Albizia procera-Derived Nitrogen-Doped Carbon for Advanced Energy Conversion, Storage, and Environmental Technologies.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-01-02 DOI: 10.1002/asia.202401362

Syed Shaheen Shah, M Nasiruzzaman Shaikh, Tanzilur Rahman, Md Iftekhar Shams, Md Almujaddade Alfasane, Syed Masiur Rahman, Asif Raihan, S M Abu Nayem, Md Abdul Aziz

{"title":"Albizia procera-Derived Nitrogen-Doped Carbon for Advanced Energy Conversion, Storage, and Environmental Technologies.","authors":"Syed Shaheen Shah, M Nasiruzzaman Shaikh, Tanzilur Rahman, Md Iftekhar Shams, Md Almujaddade Alfasane, Syed Masiur Rahman, Asif Raihan, S M Abu Nayem, Md Abdul Aziz","doi":"10.1002/asia.202401362","DOIUrl":"https://doi.org/10.1002/asia.202401362","url":null,"abstract":"This review explores the diverse applications of nitrogen-doped carbon derived from Albizia procera, known as white siris. Native to the Indian subcontinent and tropical Asia, this species thrives in varied conditions, contributing to sustainable development. The nitrogen-rich leaves of Albizia procera are an excellent source for synthesizing nitrogen-doped carbon, which possesses remarkable properties for advanced technologies. This material demonstrates significant potential in energy conversion and storage systems, such as supercapacitors and batteries, due to its high surface area, electrical conductivity, and chemical stability. Nitrogen doping introduces active sites that enhance charge storage, making it ideal for renewable energy applications. Additionally, this material shows promise in environmental processes like water splitting and CO2 capture, where its porous structure and chemical functionality enable efficient adsorption and remediation. The review discusses synthesis methodologies, including pyrolysis and activation, to optimize its properties for energy and environmental uses. Nitrogen-doped carbon derived from Albizia procera may expand into catalytic applications, enhancing its role in sustainable technologies. This review underscores the importance of utilizing natural resources like Albizia procera to develop materials that drive both environmental sustainability and technological innovation.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401362"},"PeriodicalIF":3.5,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142913289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Segregation of Constitutional Isomers of Some Aromatic Amines Exploiting the Changes of Photo-Luminescence Behaviour of Isoreticular Metal-Organic Frameworks.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-01-02 DOI: 10.1002/asia.202401495

Debajyoti Ghoshal, Pintu Das, Susanta Dinda, Rakesh Kumar

{"title":"Segregation of Constitutional Isomers of Some Aromatic Amines Exploiting the Changes of Photo-Luminescence Behaviour of Isoreticular Metal-Organic Frameworks.","authors":"Debajyoti Ghoshal, Pintu Das, Susanta Dinda, Rakesh Kumar","doi":"10.1002/asia.202401495","DOIUrl":"https://doi.org/10.1002/asia.202401495","url":null,"abstract":"Three different two dimensional Cd(II)-based metal-organic frameworks (MOFs) have been synthesized by utilizing same N,N'-donor ligand and three different functionalized dicarboxylate linkers namely isophthalate, 5-nitroisophthalate and 5-hydroxyisophthalate for compound 1, 2 and 3 respectively. The compounds that are isoreticular bi-walled 2D frameworks, show dual fluorescence emission spectra for their π-π* and n-π* excitation. Compound 1 is consists of unsubstituted bridging isophthalate whereas 2 and 3 are made with bridging isophthalate that are substituted by electron withdrawing -NO2 group and electron donating -OH group respectively. These different electronic environments in three MOFs are found effective to respond differently towards the constitutional isomers of aromatic amines having suitable electronic environment. Compound 1 responses towards non-polar -CH2 group containing picolylamine moieties, showing maximum fluorescence emission enhancement for 2- picolylamine in comparison to 3- and 4- isomer of picolylamine derivates. Compound 2, consisting electron withdrawing -NO2 group, responses more significantly towards the electron rich phenylenediamines showing maximum quenching in case of m-phenylenediamine compared to their ortho and para isomers. The change of functionalisation from -NO2 to -OH in 3, helps to detect the electron deficient aminopyridines; where the maximum fluorescence quenching has been observed in presence of 3-aminopyridine in contrast to its other isomers.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401495"},"PeriodicalIF":3.5,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142913356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0