ChemistryOpen最新文献_第2页

Facile Determination of Aluminum Content in Industrial Brine by Investigating the Effects of Buffer Systems. 通过研究缓冲体系的影响，轻松测定工业盐水中的铝含量。

IF 2.5 4区化学

ChemistryOpen Pub Date : 2024-09-03 DOI: 10.1002/open.202400038

Benjámin Csorba, László Farkas, Marcell Csécsi, László T Mika, Iván L Gresits

{"title":"Facile Determination of Aluminum Content in Industrial Brine by Investigating the Effects of Buffer Systems.","authors":"Benjámin Csorba, László Farkas, Marcell Csécsi, László T Mika, Iván L Gresits","doi":"10.1002/open.202400038","DOIUrl":"https://doi.org/10.1002/open.202400038","url":null,"abstract":"The aluminum content of concentrated (27 wt%) sodium chloride solutions could be crucial for large-scale chlor-alkali-based industries applying membrane cell electrolysis. Thus, a facile method which enables a fast and reliable protocol to determine the Al content of these solutions on ppb scale in industrial environments is fundamentally important. It was demonstrated that the increased sensitivity of colorful Al-ECR (eriochrome cyanine R) complex by the use of a cationic surfactant and specific biological buffers could effectively indicate the Al content in an extended pH interval of a concentrated saline medium under industrial conditions. The dependence of the analytical protocol on pH, temperature, time, wavelength, and the salinity of the medium was investigated. It was shown that the absorbance-based measurements of the solution should be performed at least 2-4 h after its preparation. By applying the selected two Good's buffers (HEPES: 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid, MOPS: 3-(N-morpholino)-propanesulfonic acid) and Tris (tris(hydroxymethyl)aminomethane), 32.8-38.1 % increase in the sensitivity was achieved for saturated NaCl solutions. Moreover, the limits of detection and quantification (LOD, LOQ) were also lowered by 19.0-29.8 %, and the salinity dependence of the calibration was also reduced.","PeriodicalId":9831,"journal":{"name":"ChemistryOpen","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142124965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Oxidation of Cyclohexane to Cyclohexanol/Cyclohexanone Using Sol-Gel-Encapsulated Unspecific Peroxygenase from Agrocybe aegerita. 使用溶胶-凝胶封装的 Agrocybe aegerita 非特异性过氧化氢酶将环己烷氧化为环己醇/环己酮。

IF 2.5 4区化学

ChemistryOpen Pub Date : 2024-08-30 DOI: 10.1002/open.202400152

Yinqi Wu, Frank Hollmann, Musa M Musa

引用次数: 0

Utilization of Cobalt and its Oxide/Hydroxide Mediated by Ionic Liquids/Deep Eutectic Solvents as Catalysts in Water Splitting. 利用离子液体/深共晶溶剂介导的钴及其氧化物/氢氧化物作为水分离催化剂。

IF 2.5 4区化学

ChemistryOpen Pub Date : 2024-08-30 DOI: 10.1002/open.202400136

Chenyun Zhang, Jie Wang, Jianjiao Jin, Jiahao Wang, Te Bai, Jiacheng Xu, Shun Wang, Lihua Xu, Jing Zhang

{"title":"Utilization of Cobalt and its Oxide/Hydroxide Mediated by Ionic Liquids/Deep Eutectic Solvents as Catalysts in Water Splitting.","authors":"Chenyun Zhang, Jie Wang, Jianjiao Jin, Jiahao Wang, Te Bai, Jiacheng Xu, Shun Wang, Lihua Xu, Jing Zhang","doi":"10.1002/open.202400136","DOIUrl":"https://doi.org/10.1002/open.202400136","url":null,"abstract":"With the ever-growing global demand for sustainable energy solutions, hydrogen has garnered significant attention as a clean, efficient, and renewable energy source. In the field of hydrogen production, catalyst research stands out as one of the foremost areas of focus. In recent years, the preparation of electrocatalysts using ionic liquids (ILs) and deep eutectic solvents (DESs) has attracted widespread attention. ILs and DESs possess unique physicochemical properties and are recognized as green media as well as functional materials. Cobalt-based catalysts have proven to be efficient electrocatalysts for water splitting. Incorporating ILs or DESs into the preparation of cobalt-based catalysts offers a remarkable advantage by allowing precise control over their structural design and composition. This control directly influences the adsorption properties of the catalyst's surface and the stability of reaction intermediates, thereby enabling enhanced control over reaction pathways and product selectivity. Consequently, the catalytic activity and stability of cobalt-based catalysts can be effectively improved. In the process of preparing cobalt-based catalysts, ILs and DESs can serve as solvents and templates. Owing to the good solubility of ILs and DESs, they can efficiently dissolve raw materials and provide a special nucleation and growth environment, obtaining catalysts with novel-structures. The main focus of this review is to provide a detailed introduction to metal cobalt and its oxide/hydroxide derivatives in the field of water splitting, with a particular emphasis on the research progress achieved through the utilization of IL and DES. The aim is to assist readers in designing and synthesizing novel and high-performance electrochemical catalysts.","PeriodicalId":9831,"journal":{"name":"ChemistryOpen","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142104793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Interplay of Na Substitution in Magnetic Interaction and Photocatalytic Properties of Ca_1-xNa_xTi_0.5Ta_0.5O₃ Perovskite Nanoparticles. Na 取代在 Ca1-xNaxTi0.5Ta0.5O3 珍珠岩纳米粒子的磁性相互作用和光催化特性中的相互作用

IF 2.5 4区化学

ChemistryOpen Pub Date : 2024-08-30 DOI: 10.1002/open.202400021

S S Kammar, V K Barote, A A Gaikwad, Sagar E Shirsath, A A Ibrahim, K M Batoo, R H Kadam, S S More

{"title":"Interplay of Na Substitution in Magnetic Interaction and Photocatalytic Properties of Ca1-xNaxTi0.5Ta0.5O3 Perovskite Nanoparticles.","authors":"S S Kammar, V K Barote, A A Gaikwad, Sagar E Shirsath, A A Ibrahim, K M Batoo, R H Kadam, S S More","doi":"10.1002/open.202400021","DOIUrl":"https://doi.org/10.1002/open.202400021","url":null,"abstract":"This research paper delves into the enhancement of wastewater treatment through the design and synthesis of advanced photocatalytic materials, focusing on the effects of sodium (Na) substitution in Ca1-xNaxTa0.5Ti0.5O3 perovskites. By employing various analytical techniques such as X-ray diffraction, Field Emission Scanning Electron Microscopy, Transmission Electron Microscopy and UV-vis spectroscopy, the study examines the transition of these perovskites from tetragonal to orthorhombic structures and observes a reduction in Ca content with Na substitution, which also favors the cubic phase formation and inhibits secondary phases. Significantly, magnetic property analysis uncovers an unexpected ferromagnetic ordering in these perovskites, including compositions traditionally viewed as non-magnetic. The photocatalytic tests reveal a significant improvement in degrading Rhodamine B dye under visible light, particularly in samples with higher Na levels, attributed to enhanced light absorption and efficient electron processes. The study highlights the optimal Na substitution level for peak photocatalytic performance, offering valuable insights into the complex interplay between structural, magnetic, and photocatalytic properties of these perovskites, and their potential in various applications, thereby contributing to the advancement of wastewater treatment technologies.","PeriodicalId":9831,"journal":{"name":"ChemistryOpen","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142104791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Green Synthesis of Diphenyl-Substituted Alcohols Via Radical Coupling of Aromatic Alcohols Under Transition-Metal-Free Conditions. 在无过渡金属条件下通过芳香醇的自由基偶联绿色合成二苯基取代醇。

IF 2.5 4区化学

ChemistryOpen Pub Date : 2024-08-22 DOI: 10.1002/open.202400139

Ha V Le, Vy T B Nguyen, Huy X Le, Tung T Nguyen, Khoa D Nguyen, Phuoc H Ho, Thuong T H Nguyen

{"title":"Green Synthesis of Diphenyl-Substituted Alcohols Via Radical Coupling of Aromatic Alcohols Under Transition-Metal-Free Conditions.","authors":"Ha V Le, Vy T B Nguyen, Huy X Le, Tung T Nguyen, Khoa D Nguyen, Phuoc H Ho, Thuong T H Nguyen","doi":"10.1002/open.202400139","DOIUrl":"https://doi.org/10.1002/open.202400139","url":null,"abstract":"Alcohols are common alkylating agents and starting materials alternative to harmful alkyl halides. In this study, a simple, benign and efficient pathway was developed to synthesize 1,3-diphenylpropan-1-ols via the β-alkylation of 1-phenylethanol with benzyl alcohols. Unlike conventional borrowing hydrogen processes in which alcohols were activated by transition-metal catalyzed dehydrogenation, in this work, t-BuONa was suggested to be a dual-role reagent, namely, both base and radical initiator, for the radical coupling of aromatic alcohols. The cross-coupling reaction readily proceeded under transition metal-free conditions and an inert atmosphere, affording 1,3-diphenylpropan-1-ol with an excellent yield. A good functional group tolerance in benzyl alcohols was observed, leading to the production of various phenyl-substituted propan-1-ol derivatives in moderate-to-good yields. The mechanistic studies proposed that the reaction could involve the formation of reactive radical anions by base-mediated deprotonation and single electron transfer.","PeriodicalId":9831,"journal":{"name":"ChemistryOpen","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142016498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Total Synthesis of Cyclosenegalin A. 环烯galin A 的全合成。

IF 2.5 4区化学

ChemistryOpen Pub Date : 2024-08-20 DOI: 10.1002/open.202400175

Anderson Arnold Aloanis, Tati Herlina, Ari Hardianto, Rani Maharani

引用次数: 0

Precursor-Derived Sensing Interdigitated Electrode Microstructures Based on Platinum and Nano Porous Carbon. 基于铂和纳米多孔碳的前驱体衍生传感交错电极微结构。

IF 2.5 4区化学

ChemistryOpen Pub Date : 2024-08-19 DOI: 10.1002/open.202400179

Lukas Mielewczyk, Lydia Galle, Nick Niese, Julia Grothe, Stefan Kaskel

引用次数: 0

Front Cover: Product Distribution of Steady–State and Pulsed Electrochemical Regeneration of 1,4-NADH and Integration with Enzymatic Reaction (ChemistryOpen 8/2024) 封面：1,4-NADH的稳态和脉冲电化学再生产物分布及与酶促反应的整合（ChemistryOpen 8/2024）

IF 2.5 4区化学

ChemistryOpen Pub Date : 2024-08-12 DOI: 10.1002/open.202480801

Mohammed Ali Saif Al-Shaibani, Thaleia Sakoleva, Dr. Luka A. Živković, Dr. Harry P. Austin, Dr. Mark Dörr, Dr. Liane Hilfert, Prof. Edgar Haak, Prof. Uwe T. Bornscheuer, Dr. Tanja Vidaković-Koch

引用次数: 0

Eco-friendly Regioselective Synthesis, Biological Evaluation of Some New 5-acylfunctionalized 2-(1H-pyrazol-1-yl)thiazoles as Potential Antimicrobial and Anthelmintic Agents. 一些新的 5-酰基官能化 2-(1H-吡唑-1-基)噻唑作为潜在抗菌剂和驱虫药的生态友好型区域选择性合成和生物学评价。

IF 2.5 4区化学

ChemistryOpen Pub Date : 2024-08-08 DOI: 10.1002/open.202400142

Ranjana Aggarwal, Manisha Sharma, Mona Hooda, Prabodh C Sharma, Diksha Sharma

{"title":"Eco-friendly Regioselective Synthesis, Biological Evaluation of Some New 5-acylfunctionalized 2-(1H-pyrazol-1-yl)thiazoles as Potential Antimicrobial and Anthelmintic Agents.","authors":"Ranjana Aggarwal, Manisha Sharma, Mona Hooda, Prabodh C Sharma, Diksha Sharma","doi":"10.1002/open.202400142","DOIUrl":"https://doi.org/10.1002/open.202400142","url":null,"abstract":"The present study describes an eco-friendly NBS-assisted regioselective synthesis of new 5-acylfunctionalized 5-acylfunctionalized 2-(1H-pyrazol-1-yl)thiazoles by condensation of 3,5-dimethyl-1H-pyrazole-1-carbothioamide with unsymmetrical 1,3-diketones under solvent-free conditions. The structural elucidation of the newly synthesized compounds was accomplished using various spectroscopic techniques viz. FTIR, NMR and mass spectrometry. All the newly synthesized compounds were examined for their in vitro antimicrobial potential against both pathogenic gram positive and gram negative bacterial and fungal species as well as anthelmintic activity against Pheretima posthuma earthworms. The results of antimicrobial activity revealed that all tested compounds 3 a-j showed excellent antimicrobial potential particularly against S. aureus. It was also observed that compounds 3 e and 3 i (MIC=62.5 μg/mL) showed greater potency against E. coli, whereas compounds 3 a and 3 h (MIC=50 μg/mL and 62.5 μg/mL) demonstrated better activity against P. aeruginosa and compound 3 i (MIC=62.5 μg/mL) exhibited superior activity against S. pyogenus when compared to standard drug Ampicillin (MIC=100μg/mL). Compound 3 e and 3 j revealed remarkable antifungal and anthelmintic activities. To find out binding interactions of target compounds with target proteins and pharmacokinetic parameters of the compounds, in silico investigations involving molecular docking studies and ADMET predictions were also performed.","PeriodicalId":9831,"journal":{"name":"ChemistryOpen","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141901086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

SARS-CoV-2 PL^pro Inhibition: Evaluating in Silico Repurposed Fidaxomicin's Antiviral Activity Through In Vitro Assessment. SARS-CoV-2 PLpro 抑制：通过体外评估评估硅学中重新设计的非达霉素的抗病毒活性

IF 2.5 4区化学

ChemistryOpen Pub Date : 2024-08-05 DOI: 10.1002/open.202400091

Sara Protić, Milica Crnoglavac Popović, Nevena Kaličanin, Olivera Prodanović, Milan Senćanski, Jelena Milićević, Kristina Stevanović, Vladimir Perović, Slobodan Paessler, Radivoje Prodanović, Sanja Glišić

引用次数: 0