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Photocatalytic Conversion of Lignin in the Presence of Titania and Iron Titanate Films 二氧化钛和钛酸铁膜存在下木质素的光催化转化
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-10-31 DOI: 10.1007/s11237-023-09776-3
A. S. Kramar, M. L. Malysheva, V. M. Anishchenko, P. O. Kuzema, O. M. Stavinskaya, N. P. Smirnova, I. V. Laguta, R. V. Ivannikov, O. P. Linnik
{"title":"Photocatalytic Conversion of Lignin in the Presence of Titania and Iron Titanate Films","authors":"A. S. Kramar,&nbsp;M. L. Malysheva,&nbsp;V. M. Anishchenko,&nbsp;P. O. Kuzema,&nbsp;O. M. Stavinskaya,&nbsp;N. P. Smirnova,&nbsp;I. V. Laguta,&nbsp;R. V. Ivannikov,&nbsp;O. P. Linnik","doi":"10.1007/s11237-023-09776-3","DOIUrl":"10.1007/s11237-023-09776-3","url":null,"abstract":"<div><div><p>The photocatalytic conversion of lignin, obtained from camelina (<i>Camelina sativa</i>), over titania and iron titanate films has been studied with analysis of the products using laser desorptiopn/ionization and high-performance liquid chromatography. The photocatalytic reaction over titania films leads to the formation of the mixture of compounds, such as phenol, vanillic acid, resorcinol, and <i>p</i>-coumaryl alcohol. In the presence of iron titanate films, the predominant reaction products are vanillic acid and <i>p</i>-coumaryl. The highest antioxidant activity has been revealed in the case of lignin conversion products obtained over nitrogen-containing iron titanate films under visible light exposure.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"59 3","pages":"178 - 185"},"PeriodicalIF":1.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134797911","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
Carbonized Polyaniline as a Catalyst for Hydrogenation with Molecular Hydrogen of Organic Substrates with C=C Double Bond and Nitro Group 碳化聚苯胺作为C=C双键和硝基有机底物分子氢加氢催化剂的研究
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-10-28 DOI: 10.1007/s11237-023-09778-1
Ya. I. Kurys, I. B. Bychko, O. O. Pariiska, O. Z. Didenko, D. O. Mazur, P. E. Strizhak, V. G. Koshechko, V. D. Pokhodenko
{"title":"Carbonized Polyaniline as a Catalyst for Hydrogenation with Molecular Hydrogen of Organic Substrates with C=C Double Bond and Nitro Group","authors":"Ya. I. Kurys,&nbsp;I. B. Bychko,&nbsp;O. O. Pariiska,&nbsp;O. Z. Didenko,&nbsp;D. O. Mazur,&nbsp;P. E. Strizhak,&nbsp;V. G. Koshechko,&nbsp;V. D. Pokhodenko","doi":"10.1007/s11237-023-09778-1","DOIUrl":"10.1007/s11237-023-09778-1","url":null,"abstract":"<div><div><p>Nitrogen-doped carbon, which is characterized by a large surface area and the presence of micro- and mesopores, has been obtained by pyrolysis of polyaniline (emeraldine base) in a reducing atmosphere. It is found that the surface layer of such material contains nitrogen in pyridinic, pyrrolic, and quaternary configurations, as well as hydroxyl and carbonyl groups. It is shown that carbonized polyaniline reveals catalytic properties in the processes of gas-phase and liquid-phase hydrogenation with molecular hydrogen of organic substrates containing C=C double bond and nitro group (ethylene, α-methylstyrene, p-nitrotoluene) are revealed.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"59 3","pages":"193 - 199"},"PeriodicalIF":1.0,"publicationDate":"2023-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134797688","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
Catalytic Properties of Rh-Containing Carbon Dots on SiO2, Al2O3, and ZrO2 Oxide Supports in the Glycerol Conversion 含铑碳点在SiO2、Al2O3和ZrO2氧化物载体上催化甘油转化的性能
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-10-28 DOI: 10.1007/s11237-023-09779-0
G. R. Kosmambetova, N. V. Vlasenko, L. B. Kharkova, O. H. Yanko, V. M. Ogenko, V. I. Grytsenko, O. V. Shvets
{"title":"Catalytic Properties of Rh-Containing Carbon Dots on SiO2, Al2O3, and ZrO2 Oxide Supports in the Glycerol Conversion","authors":"G. R. Kosmambetova,&nbsp;N. V. Vlasenko,&nbsp;L. B. Kharkova,&nbsp;O. H. Yanko,&nbsp;V. M. Ogenko,&nbsp;V. I. Grytsenko,&nbsp;O. V. Shvets","doi":"10.1007/s11237-023-09779-0","DOIUrl":"10.1007/s11237-023-09779-0","url":null,"abstract":"<div><div><p>It is shown that deposition of Rh-CD (CDs are carbon dots)onto SiO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>, and ZrO<sub>2</sub> oxide supports contributes to the appearance of the catalytic activity in the process of glycerol conversion. It is established that acrolein and acetaldehyde are oxygen-containing products in this reaction system. It is found that the yield of reaction products increases when using a support with a smaller specific surface area, which is caused by an increase in the surface concentration of acid sites.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"59 3","pages":"200 - 206"},"PeriodicalIF":1.0,"publicationDate":"2023-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134797689","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
Clusteroluminescence of Unconjugated Polymers: A Review 非共轭聚合物簇发光研究进展
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-08-02 DOI: 10.1007/s11237-023-09768-3
T. V. Sakhno, Yu. E. Sakhno, S. Ya. Kuchmiy
{"title":"Clusteroluminescence of Unconjugated Polymers: A Review","authors":"T. V. Sakhno,&nbsp;Yu. E. Sakhno,&nbsp;S. Ya. Kuchmiy","doi":"10.1007/s11237-023-09768-3","DOIUrl":"10.1007/s11237-023-09768-3","url":null,"abstract":"<div><div><p>The current state of research on non-conventional luminescence of unconjugated polymers, which is caused by the occurrence of through-space conjugation due to the overlapping of electronic orbitals of atoms in aggregates formed at high concentrations of substances in solutions or the solid state, is considered. The luminescent properties of different types of polymers containing oxygen, nitrogen, sulfur, silicon, boron, phosphorus is analyzed. The possibilities of the practical applications of polymer cluster luminophores in the fields such as ecosystem monitoring, medicine, biology, encryption, forensics, and optoelectronics are shown.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"59 2","pages":"75 - 106"},"PeriodicalIF":1.0,"publicationDate":"2023-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4070279","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
Obtaining, Structure, and Antimicrobial Properties of Nanocomposite Coatings Based on Polyurethane and Silver Nanoparticles 聚氨酯与银纳米复合涂层的制备、结构及抗菌性能研究
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-08-01 DOI: 10.1007/s11237-023-09772-7
E. A. Lysenkov, O. V. Stryutsky, L. P. Klymenko, M. A. Gumenna, D. V. Kozachuk, V. V. Shevchenko
{"title":"Obtaining, Structure, and Antimicrobial Properties of Nanocomposite Coatings Based on Polyurethane and Silver Nanoparticles","authors":"E. A. Lysenkov,&nbsp;O. V. Stryutsky,&nbsp;L. P. Klymenko,&nbsp;M. A. Gumenna,&nbsp;D. V. Kozachuk,&nbsp;V. V. Shevchenko","doi":"10.1007/s11237-023-09772-7","DOIUrl":"10.1007/s11237-023-09772-7","url":null,"abstract":"<div><div><p>A new method of obtaining of antimicrobial coatings based on segmented polyurethanes and silver nanoparticles (SNP) stabilized by an ionic liquid is proposed. The effect of silver nanoparticles on the structure and characteristics of the obtained materials have been studied using X-ray scattering, electron microscopy, infrared spectroscopy, differential scanning calorimetry, and the microbiological method of diffusion in agar. It is established that in the polymer matrix, SNPs with sizes from 7 to 19 nm are formed, and their size depends on the content of the stabilizer. The obtained nanocomposite coatings exhibit high antimicrobial activity against bacteria (S. aureus, E. coli) and fungi (C. albicans).</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"59 2","pages":"126 - 135"},"PeriodicalIF":1.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4008284","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
Obtaining of Luminescent Sulfur Nanoparticles in the L-Cysteine–Citrate–Sodium Sulfide System l -半胱氨酸-柠檬酸盐-硫化钠体系中发光硫纳米粒子的制备
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-07-31 DOI: 10.1007/s11237-023-09771-8
V. G. Pylypko, P. M. Fochuk
{"title":"Obtaining of Luminescent Sulfur Nanoparticles in the L-Cysteine–Citrate–Sodium Sulfide System","authors":"V. G. Pylypko,&nbsp;P. M. Fochuk","doi":"10.1007/s11237-023-09771-8","DOIUrl":"10.1007/s11237-023-09771-8","url":null,"abstract":"<div><div><p>An obtaining of sulfur nanoparticles by hydrothermal method in aqueous solution of L-cysteine, citrate ions, and sodium sulfide is proposed. The optical properties of the obtained sulfur nanoparticles have been studied by UV-Visible absorption and photoluminescence spectroscopies. Transmission and scanning electron microscopies and atomic force microscopy indicate that sulfur nanoparticles are quasi-spherical, their diameter depends on heat treatment time reaching an average size of 28 nm after 8 h of heating at 378 K. The nanoparticles exhibit photoluminescence in the range from 388 to 515 nm depending on the excitation wavelength. The obtained colloid systems have lasting sedimentation stability and high photoluminescence intensity, which make them promising for further wide application.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"59 2","pages":"120 - 125"},"PeriodicalIF":1.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5182428","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
Photocatalytic Activity of Electrochemically Formed Ag2O in the Process of CO2 Reduction with Water Vapor Under the Effect of Visible Light 可见光作用下水蒸气还原CO2过程中电化学生成Ag2O的光催化活性
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-07-29 DOI: 10.1007/s11237-023-09770-9
M. L. Ovcharov, A. M. Mishura, V. M. Granchak
{"title":"Photocatalytic Activity of Electrochemically Formed Ag2O in the Process of CO2 Reduction with Water Vapor Under the Effect of Visible Light","authors":"M. L. Ovcharov,&nbsp;A. M. Mishura,&nbsp;V. M. Granchak","doi":"10.1007/s11237-023-09770-9","DOIUrl":"10.1007/s11237-023-09770-9","url":null,"abstract":"<div><div><p>Film-like Ag<sub>2</sub>O coatings have been obtained using electrochemical method, and their photoelectrochemical and spectral properties have been studied. The photocatalytic behavior of these samples in the process of reduction of carbon dioxide with water vapor has been studied. The possibility of formation of a number of organic compounds (acetaldehyde, acetone, isopropyl and ethyl alcohols, methane) upon irradiation of the systems with visible light has been established.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"59 2","pages":"112 - 119"},"PeriodicalIF":1.0,"publicationDate":"2023-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5116137","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
Obtaining of Silver Nanoparticles in the Presence of Quercetin and Rutin Flavonoids 槲皮素和芦丁黄酮存在下纳米银的制备
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-07-29 DOI: 10.1007/s11237-023-09774-5
I. S. Petrik, A. M. Eremenko, A. I. Marynin, V. M. Pasichnyi
{"title":"Obtaining of Silver Nanoparticles in the Presence of Quercetin and Rutin Flavonoids","authors":"I. S. Petrik,&nbsp;A. M. Eremenko,&nbsp;A. I. Marynin,&nbsp;V. M. Pasichnyi","doi":"10.1007/s11237-023-09774-5","DOIUrl":"10.1007/s11237-023-09774-5","url":null,"abstract":"<div><div><p>The peculiarities of the formation and stabilization of silver nanoparticles (NP) in the presence of quercetin and rutin during chemical (NaBH<sub>4</sub>), thermal (at 90°C) and photochemical reduction of Ag<sup>+</sup> ions have been studied considering the ratios of the components. It is shown that the reduction of Ag<sup>+</sup> with the formation of silver nanoparticles with size of 50-90 nm occurs most efficiently in the presence of quercetin under the action of UV irradiation. The stabilization of Ag NP occurs due to complexation of flavonoid molecules with the silver ions on the surface of nanoparticles. The obtianed binary colloid composites flavonoid–Ag may be used in medicine as anti-inflammatory and bactericidal agents of prolonged action.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"59 2","pages":"143 - 149"},"PeriodicalIF":1.0,"publicationDate":"2023-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5118546","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
Influence of Cerium and Stibium Additives on Sensitivity of Semiconductor Sensors Based on Nanosized SnO2 to Hydrogen 铈和锑添加剂对纳米SnO2半导体传感器对氢灵敏度的影响
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-07-29 DOI: 10.1007/s11237-023-09773-6
L. P. Oleksenko, G. V. Fedorenko, N. P. Maksymovych
{"title":"Influence of Cerium and Stibium Additives on Sensitivity of Semiconductor Sensors Based on Nanosized SnO2 to Hydrogen","authors":"L. P. Oleksenko,&nbsp;G. V. Fedorenko,&nbsp;N. P. Maksymovych","doi":"10.1007/s11237-023-09773-6","DOIUrl":"10.1007/s11237-023-09773-6","url":null,"abstract":"<div><div><p>Semiconductor materials based on SnO<sub>2</sub> with different contents of cerium and stibium have been obtained. Their phase compositions, particle sizes and sensitivities of semiconductor sensors based on them to hydrogen have been studied. It is found that introduction of cerium into the material contributes to reduce the sizes of SnO<sub>2</sub> nanoparticles. Changes in the values of the sensor responses to hydrogen are explained by influence of catalytic activity of cerium and the competing effect of the introduced stibium on conductivities of the materials.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"59 2","pages":"136 - 142"},"PeriodicalIF":1.0,"publicationDate":"2023-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5118547","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
Luminescence Properties of K2Bi(PO4)(MoO4):Gd,Eu Solid Solutions K2Bi(PO4)(MoO4):Gd,Eu固溶体的发光特性
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-07-28 DOI: 10.1007/s11237-023-09769-2
V. O. Zozulia, K. V. Terebilenko, S. G. Nedilko, V. P. Chornii, M. S. Slobodyanik
{"title":"Luminescence Properties of K2Bi(PO4)(MoO4):Gd,Eu Solid Solutions","authors":"V. O. Zozulia,&nbsp;K. V. Terebilenko,&nbsp;S. G. Nedilko,&nbsp;V. P. Chornii,&nbsp;M. S. Slobodyanik","doi":"10.1007/s11237-023-09769-2","DOIUrl":"10.1007/s11237-023-09769-2","url":null,"abstract":"<div><div><p>Solid solutions K<sub>2</sub>Bi(PO<sub>4</sub>)(MoO<sub>4</sub>):Gd,Eu containing from 0.1 to 30 mole% of europium(III) and 0.1 mole% of gadolinium(III) have been prepared by conventional solid state reaction. The samples are characterized by X-ray powder diffraction method, IR and luminescence spectroscopies. It has been shown that doping with Eu<sup>3+</sup> does not affect the symmetry of the layered framework. At room temperature, all the studied samples are characterized by intense red photoluminescence, which is associated with <sup>5</sup><i>D</i><sub>0</sub>→<sup>7</sup><i>F</i><sub>0-4</sub> emission transitions in Eu<sup>3+</sup> ions. Due to the absence of concentration quenching and color characteristics, K<sub>2</sub>Bi(PO<sub>4</sub>)(MoO<sub>4</sub>):Gd,Eu has prominent prospects for application as a red phosphor.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"59 2","pages":"107 - 111"},"PeriodicalIF":1.0,"publicationDate":"2023-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5085141","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
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