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Green Synthesis of CuO Nanoparticles and their Antibacterial Properties 纳米氧化铜的绿色合成及其抗菌性能
IF 0.9 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2025-11-28 DOI: 10.1007/s11237-025-09861-9
I. H. Ali, R. T. Kadhim, D. F. A. Alasady, R. O. Abdulsada, M. H. Jawad
{"title":"Green Synthesis of CuO Nanoparticles and their Antibacterial Properties","authors":"I. H. Ali,&nbsp;R. T. Kadhim,&nbsp;D. F. A. Alasady,&nbsp;R. O. Abdulsada,&nbsp;M. H. Jawad","doi":"10.1007/s11237-025-09861-9","DOIUrl":"10.1007/s11237-025-09861-9","url":null,"abstract":"<p>Nanoscale CuO was synthesized by precipitating Cu<sub>2</sub>O in an alkaline medium in presence of potato extract, followed by oxidation in air. It was shown that the material consisted of nanoparticles with an average size of 25 nm. It was found that the obtained CuO had high antibacterial activity against Escherichia coli and Staphylococcus aureus, which exceeded the activity of copper oxide obtained without the use of potato extract.</p>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"61 2","pages":"148 - 154"},"PeriodicalIF":0.9,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145698507","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 the Si/Al Ratio in Ni-Containing BEA Zeolites on their Catalytic Properties in the Dry Reforming of Methane 含镍BEA分子筛中硅铝比对甲烷干重整催化性能的影响
IF 0.9 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2025-11-28 DOI: 10.1007/s11237-025-09858-4
S. O. Soloviev, P. I. Kuriyenko, N. V. Vlasenko, Ya. P. Kurylets, I. M. Remezovsky
{"title":"Influence of the Si/Al Ratio in Ni-Containing BEA Zeolites on their Catalytic Properties in the Dry Reforming of Methane","authors":"S. O. Soloviev,&nbsp;P. I. Kuriyenko,&nbsp;N. V. Vlasenko,&nbsp;Ya. P. Kurylets,&nbsp;I. M. Remezovsky","doi":"10.1007/s11237-025-09858-4","DOIUrl":"10.1007/s11237-025-09858-4","url":null,"abstract":"<p>It is shown that an increase in the BEA zeolite dealumination degree in the composition of NiBEA catalysts leads to an increase in the conversion of methane and carbon dioxide in the process of dry reforming of methane. The activity of catalysts increases with a decrease in the ratio of acid/basic sites. CO<sub>2</sub> is activated at basic sites during both the conversion of methane to carbon dioxide and in the accompanying reverse water-gas shift reaction. Changing the Si/Al ratio is an effective tool for regulating the activity and selectivity of NiBEA catalysts, thus providing the obtaining of synthesis gas with different CO/H<sub>2</sub> ratios.</p>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"61 2","pages":"123 - 130"},"PeriodicalIF":0.9,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145698505","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 Reduced Graphene Oxide Deposited on Aluminium Oxide in the Process of Ethane Dehydrogenation 氧化铝表面沉积还原氧化石墨烯在乙烷脱氢过程中的催化性能
IF 0.9 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2025-11-28 DOI: 10.1007/s11237-025-09860-w
V. V. Nosach, I. B. Bychko, P. E. Strizhak
{"title":"Catalytic Properties of Reduced Graphene Oxide Deposited on Aluminium Oxide in the Process of Ethane Dehydrogenation","authors":"V. V. Nosach,&nbsp;I. B. Bychko,&nbsp;P. E. Strizhak","doi":"10.1007/s11237-025-09860-w","DOIUrl":"10.1007/s11237-025-09860-w","url":null,"abstract":"<p>The catalytic properties of reduced graphene oxide (rGO) deposited on aluminium oxide in the ethane dehydrogenation reaction have been studied. It is shown that the deposition of 1wt.% of rGO on aluminium oxide increases the ethane conversion when compared to a pure support. The rGO/Al<sub>2</sub>O<sub>3</sub> catalyst exhibits 100% selectivity for ethylene at temperatures below 650°C. Based on the use of Raman and infrared spectroscopy, as well as nitrogen adsorption and desorption isotherms, the structural characteristics before and after the dehydrogenation process have been determined, and the carbonization of rGO/Al<sub>2</sub>O<sub>3</sub> and the initial Al<sub>2</sub>O<sub>3</sub> during ethane dehydrogenation has been confirmed. Carbonization of the catalyst does not lead to a complete loss of its activity, which may be associated with the formation of graphene-like nanostructures, which also reveal catalytic activity.</p>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"61 2","pages":"141 - 147"},"PeriodicalIF":0.9,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145698506","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
Organocatalysts as Enzyme Mimetics: A Review 作为酶模拟物的有机催化剂：综述
IF 0.9 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2025-09-26 DOI: 10.1007/s11237-025-09848-6
I. V. Komarov, A. M. Hurieva, V. I. Davydov, A. Yu. Ishchenko, O. O. Grygorenko
{"title":"Organocatalysts as Enzyme Mimetics: A Review","authors":"I. V. Komarov,&nbsp;A. M. Hurieva,&nbsp;V. I. Davydov,&nbsp;A. Yu. Ishchenko,&nbsp;O. O. Grygorenko","doi":"10.1007/s11237-025-09848-6","DOIUrl":"10.1007/s11237-025-09848-6","url":null,"abstract":"<p>The review considers pivotal and novel research on developing organocatalysts that imitate key enzyme classes devoid of metal ions, such as lyases, hydrolases, transferases, and oxidoreductases. Special attention is paid to enantioselective transformations facilitated by organocatalysts. It is demonstrated that the development of enzyme mimetics has significant potential for the creation of new catalytic systems. Some classes of enzymes still have no analogues among organocatalysts.</p>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"61 1","pages":"1 - 26"},"PeriodicalIF":0.9,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145374881","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
Effect of Rare Earth Metal Oxides (CeO2, La2O3) on the Properties of NI-AL2O3 Catalysts for Biogas Reforming 稀土金属氧化物（CeO2, La2O3）对NI-AL2O3生物气重整催化剂性能的影响
IF 0.9 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2025-09-23 DOI: 10.1007/s11237-025-09853-9
S. O. Soloviev, Ya.P. Kurilets, D. Yu. Balakin, Y. M. Nychiporuk
{"title":"Effect of Rare Earth Metal Oxides (CeO2, La2O3) on the Properties of NI-AL2O3 Catalysts for Biogas Reforming","authors":"S. O. Soloviev,&nbsp;Ya.P. Kurilets,&nbsp;D. Yu. Balakin,&nbsp;Y. M. Nychiporuk","doi":"10.1007/s11237-025-09853-9","DOIUrl":"10.1007/s11237-025-09853-9","url":null,"abstract":"<p>It has been established that during the biogas reforming process (CH<sub>4</sub>:CO<sub>2</sub> &gt; 1) over Ni-Al<sub>2</sub>O<sub>3</sub>/cordierite catalysts modified with rare earth metal oxides (CeO<sub>2</sub>, La<sub>2</sub>O<sub>3</sub>) reactant activation occurs at different surface sites: CH<sub>4</sub> on Ni<sup>0</sup> and CO<sub>2</sub> on MeO<sub>x</sub> (Me = La, Ce). This allows to avoid the competition between CH<sub>4</sub> and CO<sub>2</sub> molecules for active surface sites, facilitating a stable process under methane excess.</p>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"61 1","pages":"61 - 69"},"PeriodicalIF":0.9,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145374887","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
Mechanochemical Synthesis of Indenyl-Hydrazono-Thiazole Derivatives and Their Antibacterial Properties 茚基腙噻唑衍生物的机械化学合成及其抗菌性能
IF 0.9 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2025-09-23 DOI: 10.1007/s11237-025-09850-y
D. Gautam, R. P. Chaudhary
{"title":"Mechanochemical Synthesis of Indenyl-Hydrazono-Thiazole Derivatives and Their Antibacterial Properties","authors":"D. Gautam,&nbsp;R. P. Chaudhary","doi":"10.1007/s11237-025-09850-y","DOIUrl":"10.1007/s11237-025-09850-y","url":null,"abstract":"<p>It has been shown that a series of indenyl-hydrazono-thiazole derivatives could be obtained in quantitative yields by a mechanochemical method without the use of solvents. According to the results of the study by NMR and electron spectroscopy it was found that the tautomeric amino-form of the thiazole ring in indenyl-hydrazono-thiazolidin-4-one was more stable compared to the imino form. Thiazole derivatives containing chlorophenyl and nitrophenyl groups in the thiazole ring possessed significant activity against S. Aureus.</p>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"61 1","pages":"32 - 41"},"PeriodicalIF":0.9,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145374885","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 Chemoselective Hydrogenation of Benzaldehyde and 5-Hydroxymethylfurfural by Alcohols with the Participation of Crystalline Carbon Nitride 结晶氮化碳参与下醇光催化苯甲醛和5-羟甲基糠醛的化学选择性加氢反应
IF 0.9 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2025-09-23 DOI: 10.1007/s11237-025-09851-x
G. V. Korzhak, S. Ya. Kuchmiy
{"title":"Photocatalytic Chemoselective Hydrogenation of Benzaldehyde and 5-Hydroxymethylfurfural by Alcohols with the Participation of Crystalline Carbon Nitride","authors":"G. V. Korzhak,&nbsp;S. Ya. Kuchmiy","doi":"10.1007/s11237-025-09851-x","DOIUrl":"10.1007/s11237-025-09851-x","url":null,"abstract":"<p>It has been established that crystalline carbon nitride (CCN) in acidic solutions of C1-C4 alcohols in the presence of a palladium cocatalyst exhibits high photocatalytic activity in the process of chemoselective hydrogenation of benzaldehyde (BA) and 5-hydroxymethylfurfural (HMF) to benzyl alcohol and 2,5-dihydroxymethylfuran, respectively. The apparent quantum yield of BA conversion reaches ~90 % in ethanol under optimal conditions, while HMF reaches 30% (at λ<sub>irr</sub> = 405 nm). A probable process scheme is proposed, which involves the initiation of transformations of substrate molecules with the participation of photogenerated charges, in particular, oxidation of alcohols by holes of the CCN valence band, reduction of carbonyl groups by photogenerated electrons, and further transformations of intermediate compounds of a radical nature with the formation of final products.</p>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"61 1","pages":"42 - 49"},"PeriodicalIF":0.9,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145374883","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
Electrocatalytic, Photoelectrochemical, and Sensor Properties of Nanostructured TiO2 Films Modified with Lanthanum Ions 镧离子修饰纳米TiO2薄膜的电催化、光电化学和传感器性能
IF 0.9 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2025-09-22 DOI: 10.1007/s11237-025-09852-w
V. S. Vorobets, G. Ya. Kolbasov, I. A. Medyk, S. V. Karpenko, T. V. Kryshchuk, O. P. Ivanenko
{"title":"Electrocatalytic, Photoelectrochemical, and Sensor Properties of Nanostructured TiO2 Films Modified with Lanthanum Ions","authors":"V. S. Vorobets,&nbsp;G. Ya. Kolbasov,&nbsp;I. A. Medyk,&nbsp;S. V. Karpenko,&nbsp;T. V. Kryshchuk,&nbsp;O. P. Ivanenko","doi":"10.1007/s11237-025-09852-w","DOIUrl":"10.1007/s11237-025-09852-w","url":null,"abstract":"<p>The effect of modification of nanostructured TiO<sub>2</sub> films with lanthanum ions on their electrocatalytic, photoelectrochemical, and sensor properties is investigated. La-TiO<sub>2</sub> films were prepared by sol–gel method and characterized by X-ray diffraction analysis, X-ray photoelectron spectroscopy, scanning electron microscopy and photoelectrochemical current spectroscopy. It is shown that modification with lanthanum ions leads to an increase in the photosensitivity of La-TiO<sub>2</sub> electrodes in the UV range and a batochromic shift in the photocurrent spectra, and also improves their catalytic activity in the reaction of oxygen reduction and sensor properties in determining the concentration of heavy metal ions in liquids.</p>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"61 1","pages":"50 - 60"},"PeriodicalIF":0.9,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145374886","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
Mechanochemical Preparation, Structure, and Spectral and Photocatalytic Properties of Graphene-Like Germanane 类石墨烯锗烷的机械化学制备、结构、光谱和光催化性能
IF 0.9 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2025-09-20 DOI: 10.1007/s11237-025-09849-5
A. S. Kondratiuk, V. G. Koshechko
{"title":"Mechanochemical Preparation, Structure, and Spectral and Photocatalytic Properties of Graphene-Like Germanane","authors":"A. S. Kondratiuk,&nbsp;V. G. Koshechko","doi":"10.1007/s11237-025-09849-5","DOIUrl":"10.1007/s11237-025-09849-5","url":null,"abstract":"<p>The possibility of obtaining 2D GeH by mechanochemical treatment of bulk germanane in the presence of NaCl with subsequent sonochemical treatment and liquid-phase exfoliation has been demonstrated for the first time. It has been established that the preliminary mechanochemical nanostructuring of germanane promotes the formation of predominantly monolayer particles with a thickness of &lt;1 nm and a lateral size of up to 200 nm, and also leads to a red shift of the <i>E</i><sub>2<i>g</i></sub> mode in the Raman spectrum by 10 cm<sup>–1</sup>. It is shown that the dispersion of mechanochemically obtained germanane has three times higher photocatalytic activity in the hydrogen evolution reaction from an aqueous solution of lactic acid than the sample obtained without mechanochemical treatment.</p>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"61 1","pages":"27 - 31"},"PeriodicalIF":0.9,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145374882","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
Nanostructure Aerosylogel Modified with Aminopropyl Groups as an Effective Sorbent of Strontium(II) Ions from Water Media 氨基丙基修饰纳米结构气凝胶对水介质中锶离子的有效吸附
IF 0.9 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2025-09-19 DOI: 10.1007/s11237-025-09854-8
D. Yu. Lyashenko, P. P. Gorbyk
{"title":"Nanostructure Aerosylogel Modified with Aminopropyl Groups as an Effective Sorbent of Strontium(II) Ions from Water Media","authors":"D. Yu. Lyashenko,&nbsp;P. P. Gorbyk","doi":"10.1007/s11237-025-09854-8","DOIUrl":"10.1007/s11237-025-09854-8","url":null,"abstract":"<p>A functionalized nanostructure aminopropyl aerosilogel (amino-ASG) effective in the sorption of strontium ions has been synthesized using a single-stage liquid-phase chemical modification of the surface of hydroxylated mesoporous aerosilogel, which has been characterized by IR spectroscopy, low-temperature nitrogen adsorption-desorption, and chemical analysis. It is shown that amino-ASG selectively removes Sr<sup>2+</sup> cations from binary solutions at pH 1.0-10.0, even under a 10-fold excess of Ca<sup>2+</sup> cations, with equilibrium being reached during 5 min. It is established that the sorption kinetic for functional amino-ASG is described by a pseudo-second-order equation. The equilibrium sorption is consistent with the Langmuir adsorption equation, which proves a decisive contribution of the grafted amino groups.</p>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"61 1","pages":"70 - 77"},"PeriodicalIF":0.9,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145374884","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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