发布求助
文献互助 智能选刊 最新文献

Chimica Techno Acta最新文献

筛选
英文 中文
(Mechano)synthesis of azomethine- and terpyridine-linked diketopyrrolopyrrole-based polymers （Mechano）合成与甲亚胺和联吡啶连接的二酮吡咯并吡咯基聚合物
Chimica Techno Acta Pub Date : 2023-04-07 DOI: 10.15826/chimtech.2023.10.2.04
Wahab K. A. Al-Ithawi, A. Khasanov, M. I. Valieva, A. Baklykov, K. Chistiakov, E. D. Ladin, I. Kovalev, I. L. Nikonov, Grigory A. Kim, Vadim A. Vadim, D. Kopchuk, Zhuo Wang, G. Zyryanov
{"title":"(Mechano)synthesis of azomethine- and terpyridine-linked diketopyrrolopyrrole-based polymers","authors":"Wahab K. A. Al-Ithawi, A. Khasanov, M. I. Valieva, A. Baklykov, K. Chistiakov, E. D. Ladin, I. Kovalev, I. L. Nikonov, Grigory A. Kim, Vadim A. Vadim, D. Kopchuk, Zhuo Wang, G. Zyryanov","doi":"10.15826/chimtech.2023.10.2.04","DOIUrl":"https://doi.org/10.15826/chimtech.2023.10.2.04","url":null,"abstract":"Three efficient synthetic approaches towards new azomethine- and terpyridine-containing 2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione (diketopyrrolopyrrole, DPP) based polymers, such as P1 and P2, are reported. The first approach involves the Pd-catalyzed synthesis via two- or three-component Suzuki or Stille cross-coupling reaction in solution. The second approach involves Pd-catalyzed Suzuki cross-coupling reaction under ball-milling conditions. And, finally, the third approach involves Pd-free condensation reaction under ball-milling conditions. The newly obtained polymers exhibited absorbance around 700 nm and emission around 900 nm, and, thus, these polymers are considered to be NIR-fluorophores.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41477576","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
Application of the similarity theory to analysis of photocatalytic hydrogen production and photocurrent generation 相似理论在光催化制氢和光电流生成分析中的应用
Chimica Techno Acta Pub Date : 2023-04-04 DOI: 10.15826/chimtech.2023.10.2.03
{"title":"Application of the similarity theory to analysis of photocatalytic hydrogen production and photocurrent generation","authors":"","doi":"10.15826/chimtech.2023.10.2.03","DOIUrl":"https://doi.org/10.15826/chimtech.2023.10.2.03","url":null,"abstract":"In this research some methods of the similarity theory were quantitatively applied to the description of the relationship between the efficiencies of the photocatalytic hydrogen production and photocurrent generation for the first time. Two possible similarity criteria, namely, such as the ratio of the number of electrons involved in the photocatalytic reaction to the generation of photocurrent ones and the ratio of energies transformed in the case of photocatalytic hydrogen evolution to the photocurrent, were obtained by the dimensional analysis. The literature data allow checking the first criterion. The application of the first possible similarity criterion to the samples with different chemical nature, solid solutions, series, in which the synthesis time or the ratio of catalyst components, electrolyte amount or its nature is changed, was analyzed. It was shown that the ratio of electrons may serve as the similarity criterion only under the conditions of geometric and physical similarities.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43881369","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
Kinetics of solid-state oxidation of iron, copper and zinc sulfide mixture 铁、铜、锌硫化物混合物的固态氧化动力学
Chimica Techno Acta Pub Date : 2023-03-30 DOI: 10.15826/chimtech.2023.10.2.02
{"title":"Kinetics of solid-state oxidation of iron, copper and zinc sulfide mixture","authors":"","doi":"10.15826/chimtech.2023.10.2.02","DOIUrl":"https://doi.org/10.15826/chimtech.2023.10.2.02","url":null,"abstract":"The kinetics of solid-state oxidation by air of iron, copper and zinc sulfide natural mixture, which is typical of the pyritic copper ores, is investigated. Using the high-temperature X-ray powder diffraction, thermogravimetry and differential scanning calorimetry, it was found that the process can be represented by five exothermic elementary reactions, corresponding to intensive burning of iron, copper and zinc sulfides, and two endothermic ones, associated with decomposition of copper and iron sulfates. Kinetic analysis is performed by Kissinger and Augis–Bennett methods, the model-free function mechanism was determined from y(α) master plots and iterative optimization of the kinetic parameters. The limiting steps of these reactions are nucleation and crystal growth, and the values of activation energy, pre-exponential factor and Avrami exponent are in the ranges of 140–459 kJ·mol–1, 1.41·104–3.49·1031 s–1, and 1.0–1.7, respectively. Crystallization is followed by an increase in the number of nuclei, which may be formed both at the interface and in the bulk of the ore particles, and crystal growth is one-dimensional and controlled by a chemical reaction at the phase boundary or diffusion. The results of the work can contribute to the development of theoretical ideas about the physicochemical transformations of pyritic ores and concentrates during pyrometallurgical operations.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41701984","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
Electrochemical creatinine determination with metal-organic framework catalyst based on copper and acetylenedicarboxylic acid 基于铜和乙炔二羧酸的金属-有机骨架催化剂电化学测定肌酸酐
Chimica Techno Acta Pub Date : 2023-03-29 DOI: 10.15826/chimtech.2023.10.2.01
Andrei Viktorovich Okhokhonin, Alsu A. Ibatullina, Yulia V. Izmozherova, Marina I. Stepanova, Anatoliy I. Matern, A. Kozitsina
{"title":"Electrochemical creatinine determination with metal-organic framework catalyst based on copper and acetylenedicarboxylic acid","authors":"Andrei Viktorovich Okhokhonin, Alsu A. Ibatullina, Yulia V. Izmozherova, Marina I. Stepanova, Anatoliy I. Matern, A. Kozitsina","doi":"10.15826/chimtech.2023.10.2.01","DOIUrl":"https://doi.org/10.15826/chimtech.2023.10.2.01","url":null,"abstract":"Fast and accurate determination of creatinine is critical in kidney function diagnostics. This paper discusses the usage of the metal-organic framework based on copper(II) and acetylenedicarboxylic acid (CuADCA) as a catalyst of electrochemical oxidation of creatinine, glucose and urea. CuADCA was synthesized by deprotonation with triethylamine for the first time. Successful synthesis was confirmed by FTIR and EDS. The material was characterized by SEM, EIS, and CV. CuADCA forms laminated-like flakes with diameter from 1 µm to 20 µm, which is consistent with the polymer-like structure. CV and EIS analyses showed that CuADCA immobilized on GCE acts as a catalyst in electrooxidation reaction of glucose, urea, and creatinine. The sensitivity of creatinine detection, 1057±99 µA/mM, was higher than the detection sensitivity of glucose and urea by more than 100 times with the limit of detection of 2 µM, so CuADCA is a promising material for further development of enzymeless sensors for creatinine.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49646370","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
An overview of wastewater treatment using combined heterogeneous photocatalysis and membrane distillation 多相光催化与膜蒸馏联合处理废水的研究进展
Chimica Techno Acta Pub Date : 2023-03-22 DOI: 10.15826/chimtech.2023.10.1.14
Sarah A. Abdulrahman, Salah S. Ibraheem, Z. Shnain
{"title":"An overview of wastewater treatment using combined heterogeneous photocatalysis and membrane distillation","authors":"Sarah A. Abdulrahman, Salah S. Ibraheem, Z. Shnain","doi":"10.15826/chimtech.2023.10.1.14","DOIUrl":"https://doi.org/10.15826/chimtech.2023.10.1.14","url":null,"abstract":"The need for efficient remediation solutions to wastewater has risen due to the concerning prevalence of toxic organic pollutants. It is possible for the linked photocatalysis-membrane separation system to concurrently achieve the photoreaction of pollutants and their removal from wastewater in order to accomplish the goal of completely purifying the wastewater. This investigation's objective is to provide analytical overview of the photocatalytic and membrane coupling process, photocatalytic membrane reactors, and the potential applications of these technologies in the treatment of wastewater for the persistent organic matter removal. In the review, an examination of photocatalytic and membrane processes to remove organic compounds from wastewater is presented. Based on the literature analysis, it was observed that the application of photocatalytic membrane reactors is significantly influenced by a wide variety of factors. Some of these factors include pollutant concentration, dissolved oxygen, aeration, pH, and hydraulic retention time. Light intensity is another factor that has a significant influence. It was also revealed how distillation membranes work when integrated with photocatalytic process. This brief overview will help researchers understand how successful coupled photocatalytic and membrane distillation are in the treatment of wastewater containing organic pollutants.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48745195","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
The oligosuccinimide and modified polysuccinimide as green corrosion and scale inhibitors 低聚琥珀酰亚胺和改性聚琥珀酰亚胺作为绿色缓蚀剂和阻垢剂
Chimica Techno Acta Pub Date : 2023-03-17 DOI: 10.15826/chimtech.2023.10.1.12
M. J. Baari
{"title":"The oligosuccinimide and modified polysuccinimide as green corrosion and scale inhibitors","authors":"M. J. Baari","doi":"10.15826/chimtech.2023.10.1.12","DOIUrl":"https://doi.org/10.15826/chimtech.2023.10.1.12","url":null,"abstract":"Corrosion and scale formation are crucial issues in the petroleum industry. They can inflict metal or other materials breakdown, leading to environmental pollution. Applying scale and corrosion inhibitors is a cost-effective and efficient way of controlling corrosion and scale formation in a fluid system. Much research has been conducted to obtain cheap and safe corrosion or scale inhibitors. Modified polysuccinimides (PSI) are among the organic compounds reported as effective and environmentally friendly corrosion as well as scale inhibitors. The use of various novel green corrosion and scale inhibitors from modified PSI for controlling corrosion reactions or scale formation has not been extensively reviewed. Hence, this review highlights recent studies on preparing PSI/OSI, modifying PSI, and analyzing their performance as corrosion and scale inhibitors. Adsorption study, biodegradation performance, computational quantum study, limitations, and prospects of the inhibitors are also discussed. Therefore, i this work provides an overview of novel modified PSI as effective and safe corrosion or scale inhibitors in different media, for various metals, and on a different scale.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44751151","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
Effect of Sn doping on sinterability and electrical conductivity of strontium hafnate 锡掺杂对铪酸锶烧结性能和导电性的影响
Chimica Techno Acta Pub Date : 2023-03-17 DOI: 10.15826/chimtech.2023.10.1.13
A. Khaliullina, A. Meshcherskikh, L. Dunyushkina
{"title":"Effect of Sn doping on sinterability and electrical conductivity of strontium hafnate","authors":"A. Khaliullina, A. Meshcherskikh, L. Dunyushkina","doi":"10.15826/chimtech.2023.10.1.13","DOIUrl":"https://doi.org/10.15826/chimtech.2023.10.1.13","url":null,"abstract":"The effect of isovalent substitution of hafnium by tin in strontium hafnate on sinterability and electrical conductivity was studied for the first time. The ceramic samples SrHfxSn1–xO3–δ (x = 0–0.16) were synthesized by solid-state reaction and sintered at 1600 °C for 5 h. The samples were examined using the methods of X-ray diffraction, scanning electron microscopy, impedance spectroscopy, and four-probe direct current technique. It was shown that all samples were phase pure and had the orthorhombic structure of SrHfO3 with the Pnma space group. Sn doping resulted in an increase in grain size, relative density and conductivity; the sample with x = 0.08 demonstrated the highest conductivity, which was ~830 times greater than that of undoped strontium hafnate at 600 °C. The conductivity of SrHf0.92Sn0.08O3–δ was 4.1∙10–6 S cm–1 at 800 °C in dry air. The possible reasons for the effect of Sn on the electrical properties of strontium hafnate were discussed.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44033097","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
The crystallization of thin Sb2Te films with vacuum annealing and an electron beam 用真空退火和电子束制备Sb2Te薄膜
Chimica Techno Acta Pub Date : 2023-03-03 DOI: 10.15826/chimtech.2023.10.1.11
A. A. Yushkov, V. Kolosov
{"title":"The crystallization of thin Sb2Te films with vacuum annealing and an electron beam","authors":"A. A. Yushkov, V. Kolosov","doi":"10.15826/chimtech.2023.10.1.11","DOIUrl":"https://doi.org/10.15826/chimtech.2023.10.1.11","url":null,"abstract":"Thin Sb2Te films with a thickness gradient were studied via transmission electron microscopy. The processes of forced crystallization were examined with thermal annealing and an electron beam. The crystallization’s general tendencies, including competitive nucleation and growth crystallization, were revealed. As the thickness of the sample increases, the size of the crystals growing in the film enlarges. As the temperature increases, the number of crystals in the film grows. Crystallization under the action of an electron beam occurs mainly by nucleation mechanism.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46694473","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
Synthesis, computational study, solvatochromism and biological studies of thiazole-owing hydrazone derivatives 噻唑类腙衍生物的合成、计算、溶剂化变色及生物学研究
Chimica Techno Acta Pub Date : 2023-02-20 DOI: 10.15826/chimtech.2023.10.1.10
C. K. Yadav, B. Nandeshwarappa, K. Mussuvir Pasha
{"title":"Synthesis, computational study, solvatochromism and biological studies of thiazole-owing hydrazone derivatives","authors":"C. K. Yadav, B. Nandeshwarappa, K. Mussuvir Pasha","doi":"10.15826/chimtech.2023.10.1.10","DOIUrl":"https://doi.org/10.15826/chimtech.2023.10.1.10","url":null,"abstract":"In the present work, we have synthesized thiazole-hydrazone conjugates 5(a–h) and characterized them using various analytical techniques such as UV, IR, NMR, and mass spectrometry. Solvatochromic properties were evaluated in ten solvents with different polarity and quantum chemical parameters using a DFT study. The antibacterial activity results revealed that compounds 5c, 5d and 5g exhibited good efficacy and that the remaining compounds displayed significant activity. The synthesized compounds were screened for their cytotoxic activity against HepG2 and MCF-7 cell lines, and all the synthesized compounds exhibited significant potency towards the screened cancer cell lines. The anti-inflammatory efficacy of the synthesized thiazole derivatives was determined against MMP-2 and MMP-9, and some of the compounds showed significant activity. Furthermore, the in silico molecular docking was performed with the COX-2 receptor.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44956532","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
Electrochemical detection of simple alkanes by utilizing a solid-state zirconia-based gas sensor 利用固态氧化锆基气体传感器电化学检测烷烃
Chimica Techno Acta Pub Date : 2023-02-14 DOI: 10.15826/chimtech.2023.10.1.09
A. Kalyakin, A. Volkov
{"title":"Electrochemical detection of simple alkanes by utilizing a solid-state zirconia-based gas sensor","authors":"A. Kalyakin, A. Volkov","doi":"10.15826/chimtech.2023.10.1.09","DOIUrl":"https://doi.org/10.15826/chimtech.2023.10.1.09","url":null,"abstract":"Solid-state gas sensors composed of complex oxide electrolytes offer great potential for analyzing various atmospheres at high temperatures. While relatively simple gas mixtures (H2O+N2, O2+N2) have been successfully studied by means of ZrO2-based sensors, the precise detection of more complex compounds represents a challenging task. In this work, we present our findings regarding the analysis of lower alkanes (CH4, C2H6, and C3H8) mixed with nitrogen as an inert gas, utilizing an amperometric ZrO2-based sensor. This sensor, serving as an electrochemical cell with a diffusion barrier, was tested at 500–600 °C to measure the limiting current, which depends on the gas composition and can be further used as a basis for calibration curves. In addition, the diffusion coefficients of the specified gas mixtures were successfully found and compared with references, confirming the applicability of the fabricated sensor for studying diffusion processes in wide concentration and temperature ranges.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44405936","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信
小红书