Chimica Techno Acta最新文献_第9页

Optical response of SrTiO3 thin films grown via a sol-gel-hydrothermal method 溶胶-凝胶-水热法制备SrTiO3薄膜的光学响应

Chimica Techno Acta Pub Date : 2023-01-23 DOI: 10.15826/chimtech.2023.10.1.08

Y. E. Putri, Tio Putra Wendari, Restu Aulia Arham, Melvi Muharmi, Dedi Satria, Rahmayeni Rahmayeni, D. V. Wellia

{"title":"Optical response of SrTiO3 thin films grown via a sol-gel-hydrothermal method","authors":"Y. E. Putri, Tio Putra Wendari, Restu Aulia Arham, Melvi Muharmi, Dedi Satria, Rahmayeni Rahmayeni, D. V. Wellia","doi":"10.15826/chimtech.2023.10.1.08","DOIUrl":"https://doi.org/10.15826/chimtech.2023.10.1.08","url":null,"abstract":"The polycrystalline SrTiO3 thin films were prepared by the sol-gel-hydrothermal method on glass substrates. The synthesis pathway was initiated by preparing a clear TiO2 solution using the sol-gel method. This clear solution was then deposited on a glass substrate using the dip coating technique, followed by the transformation of a thin layer of TiO2 into SrTiO3 by the hydrothermal method. The crystal structure, bond interactions, and band gap energy of SrTiO3 thin layers were characterized using X-ray Diffraction (XRD), Fourier Transform Infra-Red spectroscopy (FTIR), and UV–Vis Diffuse Reflectance Spectroscopy (UV-DRS). The XRD patterns of all SrTiO3 thin layers indicated the perovskite structure of the samples. The FTIR spectrum showed an interaction of the silanol groups on the surface of the glass substrate with Ti–O–Ti of SrTiO3 layers. The characteristics of the UV-DRS spectrum were influenced by the thickness of the SrTiO3 layer formed on the glass substrate. The findings of this work provide insights for producing SrTiO3 layers with specified thickness and morphology.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46886488","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

Membrane techniques for removal detergents and petroleum products from carwash effluents: a review 膜技术去除汽车洗涤废水中的洗涤剂和石油产品的研究进展

Chimica Techno Acta Pub Date : 2023-01-11 DOI: 10.15826/chimtech.2023.10.1.07

E. Awad, S. M. Abdulla, T. M. Sabirova, Q. Alsalhy

{"title":"Membrane techniques for removal detergents and petroleum products from carwash effluents: a review","authors":"E. Awad, S. M. Abdulla, T. M. Sabirova, Q. Alsalhy","doi":"10.15826/chimtech.2023.10.1.07","DOIUrl":"https://doi.org/10.15826/chimtech.2023.10.1.07","url":null,"abstract":"One of the most significant urban services is the carwash, which generates large amounts of wastewater containing a variety of pollutants, including sand, gravel, suspended solids, surfactants, oil products, diesel cleaners, etc., that may cause environmental pollution when transferred to the sewage system without any treatment. The effective treatment is crucial to prevent environmental pollution as well as to recycle the water source. Contaminants are removed from carwash effluent using a variety of treatment technologies. This review focuses on identifying and comparing efficiency of using advanced commercial and modified membrane filtration techniques, meeting discharge standard regulations, to treat carwash impurities, especially detergents/surfactants (anionic surfactant) and petroleum products (oil/grease). The results of this review indicate that ultrafiltration membrane (UF) is the most common membrane filtration technology for carwash wastewater treatment. Additionally, the adoption of traditional pre-treatment processes may be advantageous before utilization of membrane process for treating carwash wastewater; although conventional treatment processes can produce a high quality of effluent, they are less effective than membrane systems.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41585519","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: 1

2-(4-Oxo-1,3-thiazolidin-2-ylidene)acetamid as promising scaffold for designing new antifungal compounds 2-(4-氧基-1,3-噻唑烷-2-酰基)乙酰酰胺是设计新型抗真菌化合物的有前途的支架

Chimica Techno Acta Pub Date : 2022-12-29 DOI: 10.15826/chimtech.2023.10.1.06

K. Obydennov, T. Kalinina, D. Ryabova, M. Kosterina, T. Glukhareva

引用次数: 0

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