Chimica Techno Acta最新文献_第9页

Synthesis and characterization of ZnBTC-based MOFs: effect of solvents and salt ZnBTC基MOFs的合成与表征：溶剂和盐的影响

Chimica Techno Acta Pub Date : 2022-12-22 DOI: 10.15826/chimtech.2023.10.1.05

M. Timofeeva, Andrey N. Yankin

引用次数: 0

Portable potentiometric device for determining the antioxidant capacity 测定抗氧化能力的便携式电位仪

Chimica Techno Acta Pub Date : 2022-12-21 DOI: 10.15826/chimtech.2023.10.1.04

Elena Salimgareeva, D. Igdisanova, D. Gordeeva, E. Yarkova, A. Matern, E. Gerasimova, A. Ivanova

{"title":"Portable potentiometric device for determining the antioxidant capacity","authors":"Elena Salimgareeva, D. Igdisanova, D. Gordeeva, E. Yarkova, A. Matern, E. Gerasimova, A. Ivanova","doi":"10.15826/chimtech.2023.10.1.04","DOIUrl":"https://doi.org/10.15826/chimtech.2023.10.1.04","url":null,"abstract":"At present, the development of portable devices for the express assessment of the content of biologically active objects, such as antioxidants, is one of the relevant technological problems of modern chemistry, medicine, and engineering. The main advantages of such devices are the simplicity and rapidity of analysis, small volumes of analyte, as well as miniaturization of equipment, making it possible to carry out the on-site analysis and, thus, to take a step towards the personalized medicine. The potentiometric method using the K3[Fe(CN)6]/K4[Fe(CN)6] system, which in the laboratory-scale version proved to be the most accurate, reproducible, and express, was the basis for the developed prototypes of portable devices. In this study, two versions of prototypes of the portable device are proposed, namely, the open microcell with the 0.2 ml volume and the microfluidic device with flow control. The correctness of the antioxidant capacity (AOC) determination in both systems was confirmed by comparing the results of the \"introduced-found\" method on model solutions of antioxidants and their mixtures with the AOC results obtained in a standard laboratory electrochemical cell. The relative standard deviation did not exceed 10%. The AOC of some beverage industry was determined using the microfluidic device. The correlation coefficient of the results, obtained in the microfluidic device and the laboratory cell, was 0.90, which indicates good data convergence and the possibility of using the potentiometric method implemented in the microfluidic device to assess the AOC of multicomponent objects.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44365888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Сomparison of Au, Au-Pt, and Au-Ag nanoparticles as markers for immunochromatographic determination of nonylphenol Au、Au-Pt和Au-Ag纳米颗粒作为壬基酚免疫色谱测定标记物的比较

Chimica Techno Acta Pub Date : 2022-12-19 DOI: 10.15826/chimtech.2023.10.1.03

A. Berlina, M.Yu. Ragozina, N. Komova, K. Serebrennikova, A. Zherdev, B. Dzantiev

引用次数: 1

Synthesis, intramolecular cyclization and anti-inflammatory activity of substituted 2-(2-(Furan-2-carbonyl)hydrazono)-4-oxobutanoic Acids 取代2-(2-(呋喃-2-羰基)腙)-4-氧丁酸的合成、分子内环化及抗炎活性

Chimica Techno Acta Pub Date : 2022-12-16 DOI: 10.15826/chimtech.2023.10.1.02

S. N. Igidov, D. V. Lipin, A. Turyshev, S. V. Chashchina, D. A. Shipilovskikh, O. V. Zvereva, K. A. Mitusova, P. Silaichev, N. Igidov

引用次数: 2

The electrochemical behavior’s character of a potential antiviral drug 3-nitro-4-hydroxy-7-methylthio-4H-[1,2,4]triazolo[5,1-c][1,2,4]triazinide monohydrate 潜在抗病毒药物3-硝基-4-羟基-7-甲基硫- 4h -[1,2,4]三唑[5,1-c][1,2,4]三嗪肼一水化合物的电化学行为特征

Chimica Techno Acta Pub Date : 2022-12-13 DOI: 10.15826/chimtech.2022.9.4.26

P. Mozharovskaia, A. Ivoilova, R. Drokin, A. Ivanova, A. Kozitsina, V. Rusinov

{"title":"The electrochemical behavior’s character of a potential antiviral drug 3-nitro-4-hydroxy-7-methylthio-4H-[1,2,4]triazolo[5,1-c][1,2,4]triazinide monohydrate","authors":"P. Mozharovskaia, A. Ivoilova, R. Drokin, A. Ivanova, A. Kozitsina, V. Rusinov","doi":"10.15826/chimtech.2022.9.4.26","DOIUrl":"https://doi.org/10.15826/chimtech.2022.9.4.26","url":null,"abstract":"The results of this study of the electrochemical transformation of 3-R-4-hydroxy-1,4-dihydro-7-X-1,2,4-triazolo[5,1-c][1,2,4] obtained by voltammetry are presented. It was found that 3-R-4-hydroxy-1,4-dihydro-7-X-1,2,4-triazolo[5,1-c][1,2,4] derivatives are capable of electrochemical reduction in the potential range of –0.28 to –0.33 V (relative to Ag/AgCl) in Britton–Robinson buffer at pH = 2. The electrochemical behavior of the sodium salt of 3-nitro-4-hydroxy-7-methylthio-4H-[1,2,4]triazolo[5,1-c][1,2,4]triazinide monohydrate (compound 1), which in silico modeling predicted possible biological activity against various tick-borne encephalitis and Coxsackie B3 viruses. At the potentials of the first stage of electroreduction at pH = 2, the main transformation process is the three-electron reduction scheme of the nitro group of compound 1. It was established that compound 1 in an aprotic medium is reduced in ionic form, most likely in the form of an ion pair with the Na+ cation, and in an aqueous medium in the form of a protonated particle. Based on this, a scheme was proposed for the probable electrochemical transformation of the studied compound.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45380184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrophoretic deposition of YSZ layers on pyrolytic graphite and a porous anode substrate based on NiO-YSZ YSZ层在热解石墨和NiO-YSZ多孔阳极衬底上的电泳沉积

Chimica Techno Acta Pub Date : 2022-12-09 DOI: 10.15826/chimtech.2022.9.4.25

Artem V. Solovev, George N. Starostin, I. Zvonareva, S. Tulenin, V. F. Markov

引用次数: 1

Electroreduction of silicon from the NaI–KI–K2SiF6 melt for lithium-ion power sources 锂离子电源用NaI-KI-K2SiF6熔体电还原硅的研究

Chimica Techno Acta Pub Date : 2022-12-06 DOI: 10.15826/chimtech.2022.9.4.24

Rayana K. Abdurakhimova, M. V. Laptev, N. Leonova, A. Leonova, Alexander S. Schmygalev, A. Suzdaltsev

{"title":"Electroreduction of silicon from the NaI–KI–K2SiF6 melt for lithium-ion power sources","authors":"Rayana K. Abdurakhimova, M. V. Laptev, N. Leonova, A. Leonova, Alexander S. Schmygalev, A. Suzdaltsev","doi":"10.15826/chimtech.2022.9.4.24","DOIUrl":"https://doi.org/10.15826/chimtech.2022.9.4.24","url":null,"abstract":"Silicon and silicon-based materials are increasingly used in microelectronics, metallurgy and power generation. To date the active study aimed at the development of silicon materials to be used in devices for solar energy conversion, accumulation and storage is underway. In addition, silicon is a promising anode material for lithium-ion fuel cells. In the present paper a possibility of silicon electroreduction from the NaI–KI–K2SiF6 melt in the argon atmosphere is studied. With this aim in view the electrolysis of the NaI–KI–K2SiF6 melt with glassy carbon cathode was performed under galvanostatic and potentiostatic regimes at the temperatures ranging from 650 to 750 °С. The morphology, phase and elemental analyses of the obtained silicon deposits were performed after their separation from the electrolytes by the ICP, SEM-EDX, XRD and Raman spectroscopy methods. Fiber and thread-like silicon samples of 60 to 320 nm in dimeter with admixtures concentrations (mainly oxygen) from 1.2 to 4.6 wt.% were experimentally synthesized. The obtained samples were tested as possible Si/C composite anodes for lithium-ion power sources. The discharge capacity of such power sources after 30 cycles of lithiation-delithiation ranged from 440 to 565 mAh·g–1 and the coloumbic efficiency ranged from 89 to 91%.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43519142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Synthesis, recyclization under the action of methanol and analgetic activity of N'-(5-aryl-2-oxofuran-3(2H)-ylidene)furan-2-carbohydrazides N’-（5-芳基-2-氧代呋喃-3（2H）-亚基）呋喃-2-羧酰肼的合成、甲醇作用下的回收及镇痛活性

Chimica Techno Acta Pub Date : 2022-12-01 DOI: 10.15826/chimtech.2023.10.1.01

S. N. Igidov, I. Gorbunova, A. Turyshev, D. A. Shipilovskikh, D. A. Kozlov, Anna Rogova, R. R. Makhmudov, P. Silaichev, N. Igidov

引用次数: 2

Effect of gas-chromatography column regeneration during the CHN/S analysis of copper-chromium disulfide 气相色谱柱再生对二硫化铜铬CHN/S分析的影响

Chimica Techno Acta Pub Date : 2022-11-22 DOI: 10.15826/chimtech.2022.9.4.23

I. B. Troitskaia, M. M. Syrokvashin, Evgeny V. Korotaev, A. Saprykin

引用次数: 1

Sorption analysis of composites based on zinc oxide for catalysis and medical materials science 用于催化和医用材料科学的氧化锌复合材料的吸附分析

Chimica Techno Acta Pub Date : 2022-11-22 DOI: 10.15826/chimtech.2022.9.4.22

E. Maraeva, Dmitriy Radaykin, A. Bobkov, N. Permiakov, Vasily Matveev, A. Maximov, Vyacheslav Moshnikov

引用次数: 1