Russian Journal of Applied Chemistry最新文献_第3页

Preparation and Characterization of Polymeric Microbeads Incorporated with Reduced Graphene Oxide for Drug Delivery and Antibacterial Applications 用于药物输送和抗菌应用的还原石墨烯氧化物聚合物微珠的制备与表征

IF 0.6 4区化学

Russian Journal of Applied Chemistry Pub Date : 2024-08-20 DOI: 10.1134/S1070427224020085

Dharmender Pallerla, Sreekanth Reddy Obireddy, Jithendra Thammineni, Manohara Reddy Busha, Prasoona Gumpula, Sunkari Jyothi

{"title":"Preparation and Characterization of Polymeric Microbeads Incorporated with Reduced Graphene Oxide for Drug Delivery and Antibacterial Applications","authors":"Dharmender Pallerla, Sreekanth Reddy Obireddy, Jithendra Thammineni, Manohara Reddy Busha, Prasoona Gumpula, Sunkari Jyothi","doi":"10.1134/S1070427224020085","DOIUrl":"10.1134/S1070427224020085","url":null,"abstract":"Creating polymeric microbeads that can respond to stimuli and deliver drugs has various practical uses in the pharmaceutical industry. To address this need, we have developed a new type of pH-sensitive polymeric microbeads that can be used as carriers for drug delivery applications. The gelation method was used to create microbeads incorporated with reduced graphene oxide (rGO) for the controlled release of metronidazole using sodium alginate and locust bean gum. The synthesized rGO and microbeads were analyzed by FTIR, XRD, and SEM. In vitro release and swelling studies were performed at pH 7.4 and 2.0 at 37°C. The release kinetics and mechanism are analyzed by fitting the release data into various kinetics models. The antibacterial activity of the generated microbeads was tested against B. subtilis, L. acidophilus, and S. mutans. The results suggest that the developed microbeads may serve as effective carriers for antibacterial treatment.","PeriodicalId":757,"journal":{"name":"Russian Journal of Applied Chemistry","volume":"97 2","pages":"287 - 295"},"PeriodicalIF":0.6,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142224542","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}

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Dependence of the Oil-Collecting and Oil-Dispersing Ability of Surfactants on the Kind of Alkyl Radicals in Their Head Group 表面活性剂的收油和散油能力取决于其头基中的烷基自由基种类

IF 0.6 4区化学

Russian Journal of Applied Chemistry Pub Date : 2024-07-16 DOI: 10.1134/S1070427223110061

Sh. M. Nasibova, R. A. Rahimov, G. A. Ahmadova, A. Z. Abilova

引用次数: 0

Use of the Peroxide Method for Vanadium Activation to Obtain Mixed Keggin-Type Heteropoly Compounds 使用过氧化物法活化钒以获得混合凯金型杂多化合物

IF 0.6 4区化学

Russian Journal of Applied Chemistry Pub Date : 2024-07-16 DOI: 10.1134/S1070427223110012

Yu. A. Rodikova, T. Yu. Kardash, E. G. Zhizhina

{"title":"Use of the Peroxide Method for Vanadium Activation to Obtain Mixed Keggin-Type Heteropoly Compounds","authors":"Yu. A. Rodikova, T. Yu. Kardash, E. G. Zhizhina","doi":"10.1134/S1070427223110012","DOIUrl":"10.1134/S1070427223110012","url":null,"abstract":"The possibility of preparing mixed Keggin-type heteropoly compounds by introducing catalytically active vanadium(V) atoms activated by the peroxide method into the framework of Mo- and W-containing heteropoly anions was demonstrated. The pretreatment of the required amount of vanadium(V) in the form of V2O5 with a concentrated H2O2 solution ensures a considerable decrease in the content of foreign ions in solutions of heteropoly compounds and in salts based on them. Incorporation of vanadium(V) atoms into the heteropoly anion framework with preservation of the structural integrity was proved by the example of acidic salts Cs3.5H0.5PMo11VO40, Cs3.5H0.5PW11VO40, and Cs4.5H0.5SiW11VO40. The textural characteristics of the target compounds were studied, their thermograms were recorded, and the phase composition was determined. High stability and low solubility of the Cs-containing salts in three cycles of hydrothermal treatment were demonstrated.","PeriodicalId":757,"journal":{"name":"Russian Journal of Applied Chemistry","volume":"96 11","pages":"929 - 936"},"PeriodicalIF":0.6,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141717328","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

Hydrogenation of Furfural on Pt- and Pd-Containing Catalysts in an Aqueous Medium 含铂和钯催化剂在水介质中的糠醛加氢反应

IF 0.6 4区化学

Russian Journal of Applied Chemistry Pub Date : 2024-07-16 DOI: 10.1134/S1070427223110048

E. A. Roldugina, S. V. Kardashev, A. L. Maximov

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Dielectric Properties of Addition Poly(5-n-alkylnorbornenes) 加成聚（5-正烷基降冰片烯）的介电性能

IF 0.6 4区化学

Russian Journal of Applied Chemistry Pub Date : 2024-07-16 DOI: 10.1134/S107042722311005X

A. I. Wozniak, I. V. Lunev, A. A. Galiullin, M. V. Bermeshev

{"title":"Dielectric Properties of Addition Poly(5-n-alkylnorbornenes)","authors":"A. I. Wozniak, I. V. Lunev, A. A. Galiullin, M. V. Bermeshev","doi":"10.1134/S107042722311005X","DOIUrl":"10.1134/S107042722311005X","url":null,"abstract":"Dielectric properties of a series of addition poly(5-n-alkylnorbornenes) (alkyl = ethyl, n-butyl, n-hexyl, n-decyl, and n-tetradecyl) were studied in a wide range of electric field frequencies (0.01–1 × 106 Hz) and temperatures (form –100 to +100°С). The relative dielectric permittivity of these polymers varies from 1.97 to 2.31 at the field frequency of 1 MHz and temperature of 25°С. Addition poly(5-n-butyl-2-norbornene) has the minimal dielectric permittivity. The dielectric permittivity of the addition polymers in the glassy state remained virtually constant in the frequency and temperature ranges examined. All the polynorbornenes prepared exhibit low values of the dielectric loss (εʺ ~ 10–3–10–4) and dielectric loss tangent (tan δ ~ 10–3–10–4) in the major part of the frequency and temperature ranges examined. However, εʺ and tan δ of the polymers with long alkyl substituents (n-hexyl, n-decyl, and n-tetradecyl) considerably increased at low frequencies and high temperatures.","PeriodicalId":757,"journal":{"name":"Russian Journal of Applied Chemistry","volume":"96 11","pages":"962 - 967"},"PeriodicalIF":0.6,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141717331","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

Furfural Hydrogenation in the Presence of Ru and Pd Catalysts Immobilized on Hybrid Materials Based on Mesoporous Phenol–Formaldehyde Polymers and Silica 在固定于基于介孔苯酚-甲醛聚合物和二氧化硅的混合材料上的 Ru 和 Pd 催化剂存在下的糠醛加氢反应

IF 0.6 4区化学

Russian Journal of Applied Chemistry Pub Date : 2024-07-16 DOI: 10.1134/S1070427223110036

M. P. Boronoev, I. I. Shakirov, E. A. Roldugina, Yu. S. Kardasheva, S. V. Kardashev

引用次数: 0

Recovery of Rhodium, Ruthenium, and Palladium from Nitric and Hydrochloric Acid Solutions with Iron(III) Hexacyanoferrate(II) 用六氰合铁酸铁（II）从硝酸和盐酸溶液中回收铑、钌和钯

IF 0.6 4区化学

Russian Journal of Applied Chemistry Pub Date : 2024-07-16 DOI: 10.1134/S1070427223110024

P. V. Davydova, V. A. Korolev

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Carbon Dioxide Adsorption Study on Rice Husk Activated Carbons by Artificial Neural Network (ANN) 人工神经网络 (ANN) 在稻壳活性炭上的二氧化碳吸附研究

IF 0.6 4区化学

Russian Journal of Applied Chemistry Pub Date : 2024-06-28 DOI: 10.1134/S1070427224020010

Kishor Palle, Sambhani Naga Gayatri, Ramesh Kola, Ch Sandhya Rani, P. Ramesh Babu, L. Vijayalakshmi, Seong Jin Kwon, Md. Mustaq Ali

引用次数: 0

Physicochemical Properties and NH3-SCR Performance of Supported CeO2–MnOx Mixed Oxides Catalysts 支撑型 CeO2-MnOx 混合氧化物催化剂的理化性质和 NH3-SCR 性能

IF 0.6 4区化学

Russian Journal of Applied Chemistry Pub Date : 2024-06-28 DOI: 10.1134/S1070427224020034

Seyed Mahdi Mousavi, Parvaneh Nakhostin Panahi, Aligholi Niaei

{"title":"Physicochemical Properties and NH3-SCR Performance of Supported CeO2–MnOx Mixed Oxides Catalysts","authors":"Seyed Mahdi Mousavi, Parvaneh Nakhostin Panahi, Aligholi Niaei","doi":"10.1134/S1070427224020034","DOIUrl":"10.1134/S1070427224020034","url":null,"abstract":"CeO2–MnOx mixed oxides supported on different carriers (ZSM-5, TiO2, and SAPO-34) were prepared by the sol-gel combustion method and evaluated for the selective catalytic reduction of NO with NH3. The physicochemical properties of the samples were determined by using XRD, TEM, N2 adsorption (BET method), H2-TPR, and NH3-TPD. The Ce–Mn/TiO2 exhibited a higher NO conversion than Ce–Mn/ZSM-5 in the 100-200°C temperature range, but the NO conversion of Ce–Mn/ZSM-5 increases with reaction temperature (being the N2 selectivity close to 100%) whereas, for Ce–Mn/TiO2, the N2 selectivity extremely decreases. The reducibility and surface acidity of samples seems to explain the catalytic performance. Thus, although the reducibility of Ce–Mn/ZSM-5 and Ce–Mn/TiO2 was similar, the large number of surface acid sites of Ce–Mn/ZSM-5 could be a plausible reason for its excellent SCR activity. In fact, the superior SCR activity of Ce–Mn/ZSM-5 (94% NO conversion and 95% N2 selectivity at 300°C) is related to the presence of well-dispersed Ce–Mn mixed oxide nanoparticles, high reducibility, and a large number of surface acid sites.","PeriodicalId":757,"journal":{"name":"Russian Journal of Applied Chemistry","volume":"97 2","pages":"211 - 221"},"PeriodicalIF":0.6,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141519680","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

Application of Sodium Methyl Ester Sulfonate Anionic Surfactants as Corrosion Inhibitors for Carbon Steel in Oilfield Injection Water 甲基酯磺酸钠阴离子表面活性剂作为碳钢缓蚀剂在油田注入水中的应用

IF 0.6 4区化学

Russian Journal of Applied Chemistry Pub Date : 2024-06-28 DOI: 10.1134/S1070427224020046

Asselah Amel, Affif Chaouche M’Yassa, Amel Tazerouti

{"title":"Application of Sodium Methyl Ester Sulfonate Anionic Surfactants as Corrosion Inhibitors for Carbon Steel in Oilfield Injection Water","authors":"Asselah Amel, Affif Chaouche M’Yassa, Amel Tazerouti","doi":"10.1134/S1070427224020046","DOIUrl":"10.1134/S1070427224020046","url":null,"abstract":"In this study, the anticorrosive properties of a series of sodium methyl ester sulfonate anionic surfactants on a carbon steel were estimated for an oilfield injection water collected from a well of Hassi R’Mel region—Algeria, known as Baremian water, and are compared to those of sodium dodecyl sulfate. This class of surfactants was synthesized from fatty acids by a photochemical process and present good physico-chemical properties and good biodegradability. The inhibition performance was evaluated by weight loss and electrochemical techniques: linear polarization resistance and electrochemical impedance spectroscopy. The results showed that these surfactants are good inhibitors; the inhibition efficiency increases with increasing concentration surfactants. In addition, the increase of chain length surfactants leads to the best inhibition efficiency for sodium sulfo palmityl methyl ester surfactant with 95.27, 98.20, and 95% via weight loss, linear polarization resistance and electrochemical impedance spectroscopy, respectively. Scanning electron microscopy–Energy dispersive X-ray allowed the visualization of a good adhesion of the protective deposit formed by the surfactants on the carbon steel surface including the elements presents on this surface as sodium and sulfur. The adsorption of these surfactants shows the maximum adherence to the Langmuir model and the values of Gibbs free energy of adsorption indicated that the inhibitor molecules are physically adsorb onto the metal surface.","PeriodicalId":757,"journal":{"name":"Russian Journal of Applied Chemistry","volume":"97 2","pages":"264 - 277"},"PeriodicalIF":0.6,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141504678","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