Pub Date : 2024-11-01DOI: 10.1016/j.rechem.2024.101884
Shafaque M. Shaikh , Gulafshan M. Ansari , Zobia Z. Karbari , Aditi A. Babre , Vikas V. Borge , Vikas M. Bangade , Damodara N. Kommi , Bhushan B. Popatkar
In the presented work, a convenient and effective methodology for the synthesis of quinoxaline, 6H-indolo[2,3-b]quinoxaline and benzimidazole derivatives has been developed. The reaction of 1,2-diamines with various substituted benzil, isatin and aldehydes produces quinoxaline, 6H-indolo[2,3-b]quinoxaline and benzimidazole derivatives respectively. The reaction between 1,2-diamines with various substituted benzils, isatins and aldehydes was carried out in presence of catalytic amount of [EMIM]AlCl4 (1-ethyl-3-methylimidazolium tetrachloroaluminate) ionic liquid in ethanol under the grinding condition in mortar and pestle. The ease of handling of catalyst, inclusion of eco-friendly solvent, attractive yield of the product, shorter reaction time and overall operational simplicity are some significant outcome of this procedure.
{"title":"[EMIM]AlCl4-ionic liquid catalyzed mechanochemically assisted green approach towards the synthesis of quinoxaline, 6H-indolo[2,3-b]quinoxaline and benzimidazole derivatives","authors":"Shafaque M. Shaikh , Gulafshan M. Ansari , Zobia Z. Karbari , Aditi A. Babre , Vikas V. Borge , Vikas M. Bangade , Damodara N. Kommi , Bhushan B. Popatkar","doi":"10.1016/j.rechem.2024.101884","DOIUrl":"10.1016/j.rechem.2024.101884","url":null,"abstract":"<div><div>In the presented work, a convenient and effective methodology for the synthesis of quinoxaline, 6H-indolo[2,3-b]quinoxaline and benzimidazole derivatives has been developed. The reaction of 1,2-diamines with various substituted benzil, isatin and aldehydes produces quinoxaline, 6H-indolo[2,3-b]quinoxaline and benzimidazole derivatives respectively. The reaction between 1,2-diamines with various substituted benzils, isatins and aldehydes was carried out in presence of catalytic amount of [EMIM]AlCl<sub>4</sub> (1-ethyl-3-methylimidazolium tetrachloroaluminate) ionic liquid in ethanol under the grinding condition in mortar and pestle. The ease of handling of catalyst, inclusion of eco-friendly solvent, attractive yield of the product, shorter reaction time and overall operational simplicity are some significant outcome of this procedure.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"12 ","pages":"Article 101884"},"PeriodicalIF":2.5,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142592662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-30DOI: 10.1016/j.rechem.2024.101881
A. Sunil, Kiran Kumar JK
1,2-hydroxyphenylthiourea(HPTU) undergoes auto-oxidation to form an yellow colored dimer. The process of auto-oxidation is enhanced by the presence of trace quantities of transition metal ions and transition metal complexes that act as catalysts. In the current study, catalytic potential of rhodium(III) complexes on the auto-oxidation of 1,2-hydroxyphenylthiourea(HPTU) was studied theoretically using quantum mechanical calculations and experiments were carried out using photometry and fluorometry. DFT studies inferred that [Rh(Py)6]Cl3 showed a better catalytic activity in the dimerization of HPTU. Theoretical studies were subsequently validated through experiments using photometric methods and the range of detection was determined to be 6 ng/mL–100 ng/mL. The detection limit was observed to be 2 ng/mL. Analytical parameters such as pH, reagent concentration, metal ion concentration, appropriate activators and surfactants were established.
{"title":"Catalytic effect of the in-situ rhodium(III) complexes in surfactant medium on the auto-oxidation of 1,2-hydroxyphenylthiourea: A theoretical and experimental study for rhodium(III) sensing","authors":"A. Sunil, Kiran Kumar JK","doi":"10.1016/j.rechem.2024.101881","DOIUrl":"10.1016/j.rechem.2024.101881","url":null,"abstract":"<div><div>1,2-hydroxyphenylthiourea(HPTU) undergoes auto-oxidation to form an yellow colored dimer. The process of auto-oxidation is enhanced by the presence of trace quantities of transition metal ions and transition metal complexes that act as catalysts. In the current study, catalytic potential of rhodium(III) complexes on the auto-oxidation of 1,2-hydroxyphenylthiourea(HPTU) was studied theoretically using quantum mechanical calculations and experiments were carried out using photometry and fluorometry. DFT studies inferred that [Rh(Py)<sub>6</sub>]Cl<sub>3</sub> showed a better catalytic activity in the dimerization of HPTU. Theoretical studies were subsequently validated through experiments using photometric methods and the range of detection was determined to be 6 ng/mL–100 ng/mL. The detection limit was observed to be 2 ng/mL. Analytical parameters such as pH, reagent concentration, metal ion concentration, appropriate activators and surfactants were established.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"12 ","pages":"Article 101881"},"PeriodicalIF":2.5,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-30DOI: 10.1016/j.rechem.2024.101885
Faezeh khazaei, Hossein Barani
This study investigates the application of Hymenocrater platystegius flower as a natural mothproofing agent for wool fibers and examines the effects of aluminum mordanting on the dyeing properties of wool treated with various natural dyes. Wool fibers were treated with Hymenocrater platystegius flower powder and aluminum salts, followed by dyeing with Madder, Reseda lutea, Indigo, or Walnut shell dyes using different mordanting methods. FTIR analysis revealed the characteristic absorption bands and confirmed the interactions between the wool fibers and the treatment agents. The insect-repellent properties were assessed by weight loss measurements after exposure to Anthrenus verbasci larvae, showing significant improvements in treated samples, particularly with the combination of Hymenocrater platystegius and aluminum mordanting. GC–MS analysis of the essential oil identified as α-Pinene, Trans-Verbenol, Linalool, and β-Bourbonene as the main constituents, contributing to the insect-repellent effect. The L*a*b* color space analysis demonstrated that aluminum mordanting significantly enhances the color strength and stability of dyed wool, with pre-mordanting generally providing better results. The study further evaluated the washing and light fastness, as well as the mothproofing properties of the dyed wool samples. These results indicate that the weight loss percentages of treated wool fiber after washing are slightly higher than before washing, but the difference is not significant. Overall, the use of aluminum mordant in conjunction with Hymenocrater platystegius flower powder not only improves the color characteristics of wool dyed with natural dyes but also provides effective mothproofing properties, making it a viable and eco-friendly option for textile applications.
{"title":"Sustainable enhancement of wool fibers using Hymenocrater platystegius flower and natural dyes for improved Insect-Repellent and color properties","authors":"Faezeh khazaei, Hossein Barani","doi":"10.1016/j.rechem.2024.101885","DOIUrl":"10.1016/j.rechem.2024.101885","url":null,"abstract":"<div><div>This study investigates the application of <em>Hymenocrater platystegius</em> flower as a natural mothproofing agent for wool fibers and examines the effects of aluminum mordanting on the dyeing properties of wool treated with various natural dyes. Wool fibers were treated with <em>Hymenocrater platystegius</em> flower powder and aluminum salts, followed by dyeing with Madder, Reseda lutea, Indigo, or Walnut shell dyes using different mordanting methods. FTIR analysis revealed the characteristic absorption bands and confirmed the interactions between the wool fibers and the treatment agents. The insect-repellent properties were assessed by weight loss measurements after exposure to <em>Anthrenus verbasci</em> larvae, showing significant improvements in treated samples, particularly with the combination of <em>Hymenocrater platystegius</em> and aluminum mordanting. GC–MS analysis of the essential oil identified as α-Pinene, Trans-Verbenol, Linalool, and β-Bourbonene as the main constituents, contributing to the insect-repellent effect. The L*a*b* color space analysis demonstrated that aluminum mordanting significantly enhances the color strength and stability of dyed wool, with pre-mordanting generally providing better results. The study further evaluated the washing and light fastness, as well as the mothproofing properties of the dyed wool samples. These results indicate that the weight loss percentages of treated wool fiber after washing are slightly higher than before washing, but the difference is not significant. Overall, the use of aluminum mordant in conjunction with <em>Hymenocrater platystegius</em> flower powder not only improves the color characteristics of wool dyed with natural dyes but also provides effective mothproofing properties, making it a viable and eco-friendly option for textile applications.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"12 ","pages":"Article 101885"},"PeriodicalIF":2.5,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-30DOI: 10.1016/j.rechem.2024.101882
Duaa R. Alajroush , Brittney F. Anderson , Janae A. Bruce , Christian I. Lartey , Dazonte A. Mathurin , Sean T. Washington , Tanaya S. Washington , Sidy Diawara , Sakariyau A. Waheed , Kaylin L. Thomas , Stephen J. Beebe , Alvin A. Holder
In this study, the copper(II) complex [Cu(chromoneTSC)Cl2]•0.5H2O•0.0625C2H5OH (where chromoneTSC = (E)-N-Ethyl-2-((4-oxo-4H-chromen-3-yl)methylene)-hydrazinecarbothioamide) was synthesized and characterized; then used to carry out in vitro studies in combination with berberine chloride (BBC). The ligand and complex were characterized by elemental analysis, FTIR and NMR (1H and 13C) spectroscopy, and conductivity measurements. The cytotoxic effect was analyzed by using the CCK-8 viability assay in cancer MDA-MB-231 VIM RFP and non-cancer MCF-10A cell lines. The IC50 values for the complex and BBC were 21.2 ± 1.6 and 48.3 ± 2.4 μM, respectively at 24 h incubation, while the IC50 value of the combination treatment was 9.3 ± 1.5 in cancer cells. The co-treatment group significantly increased the number of cells in G2 phase, indicating the growth arrest of cancer cells. Moreover, the combination group showed induction of both intrinsic and extrinsic apoptotic pathways. There was also a study on the effect of the combination treatment on receptor-interacting serine/threonine-protein kinase 3 (RIPK3) and mixed lineage kinase domain-like pseudokinase (MLKL) as biomarkers of necroptosis. The results showed activation of necroptosis after treatment with the combination of the copper complex and BBC via the activation of RIPK3–MLKL pathway.
{"title":"Enhancement of antitumor effects of berberine chloride with a copper(II) complex against human triple negative breast cancer: In vitro studies","authors":"Duaa R. Alajroush , Brittney F. Anderson , Janae A. Bruce , Christian I. Lartey , Dazonte A. Mathurin , Sean T. Washington , Tanaya S. Washington , Sidy Diawara , Sakariyau A. Waheed , Kaylin L. Thomas , Stephen J. Beebe , Alvin A. Holder","doi":"10.1016/j.rechem.2024.101882","DOIUrl":"10.1016/j.rechem.2024.101882","url":null,"abstract":"<div><div>In this study, the copper(II) complex [Cu(chromoneTSC)Cl<sub>2</sub>]•0.5H<sub>2</sub>O•0.0625C<sub>2</sub>H<sub>5</sub>OH (where chromoneTSC = <em>(E)-N</em>-Ethyl-2-((4-oxo-4H-chromen-3-yl)methylene)-hydrazinecarbothioamide) was synthesized and characterized; then used to carry out <em>in vitro</em> studies in combination with berberine chloride (BBC). The ligand and complex were characterized by elemental analysis, FTIR and NMR (<sup>1</sup>H and <sup>13</sup>C) spectroscopy, and conductivity measurements. The cytotoxic effect was analyzed by using the CCK-8 viability assay in cancer MDA-MB-231 VIM RFP and non-cancer MCF-10A cell lines. The IC<sub>50</sub> values for the complex and BBC were 21.2 ± 1.6 and 48.3 ± 2.4 μM, respectively at 24 h incubation, while the IC<sub>50</sub> value of the combination treatment was 9.3 ± 1.5 in cancer cells. The co-treatment group significantly increased the number of cells in G2 phase, indicating the growth arrest of cancer cells. Moreover, the combination group showed induction of both intrinsic and extrinsic apoptotic pathways. There was also a study on the effect of the combination treatment on receptor-interacting serine/threonine-protein kinase 3 (RIPK3) and mixed lineage kinase domain-like pseudokinase (MLKL) as biomarkers of necroptosis. The results showed activation of necroptosis after treatment with the combination of the copper complex and BBC <em>via</em> the activation of RIPK3–MLKL pathway.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"12 ","pages":"Article 101882"},"PeriodicalIF":2.5,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-29DOI: 10.1016/j.rechem.2024.101883
Haylana Mostafa Al-Turky, Maysoon Alhafez, Basel Ibrahim
Pumpkin seeds are considered to be agricultural residues locally, which can be utilized as a source for extracting vegetable oil. This study aims to determine tocopherols and total carotenoid contents and to evaluate the antioxidant capacity of two species of pumpkin (Cucurbita Maxima and Cucurbita Moschata) seed oils. An estimate of the efficiency of the extracted oil on sunflower oil protection against oxidative deterioration was conducted during 32 h of heating at 180 ± 5°C. The DPPH and ABTS assay results showed that C.Maxima seeds oil exhibited a greater free radical scavenging capacity. C.Maxima seeds oil was rich in tocopherols (1433.637 mg/kg oil), especially of γ-tocopherol. In comparison, C.Moschata seeds oil was characteristic of a high carotenoid concentration (44.843 mg of β-carotene/kg oil). Adding 10 % of C.Maxima seeds oil to sunflower oil may delay its lipid oxidation by minorly increasing its peroxide and acid values and reducing its iodine value compared to untreated sunflower oil.
{"title":"The antioxidant capacity of pumpkin seed oil and its impact on the stability of heated sunflower oil","authors":"Haylana Mostafa Al-Turky, Maysoon Alhafez, Basel Ibrahim","doi":"10.1016/j.rechem.2024.101883","DOIUrl":"10.1016/j.rechem.2024.101883","url":null,"abstract":"<div><div>Pumpkin seeds are considered to be agricultural residues locally, which can be utilized as a source for extracting vegetable oil. This study aims to determine tocopherols and total carotenoid contents and to evaluate the antioxidant capacity of two species of pumpkin (<em>Cucurbita Maxima</em> and <em>Cucurbita Moschata</em>) seed oils. An estimate of the efficiency of the extracted oil on sunflower oil protection against oxidative deterioration was conducted during 32 h of heating at 180 ± 5°C. The DPPH and ABTS assay results showed that <em>C.Maxima</em> seeds oil exhibited a greater free radical scavenging capacity. <em>C.Maxima</em> seeds oil was rich in tocopherols (1433.637 mg/kg oil), especially of γ-tocopherol. In comparison, <em>C.Moschata</em> seeds oil was characteristic of a high carotenoid concentration (44.843 mg of β-carotene/kg oil). Adding 10 % of <em>C.Maxima</em> seeds oil to sunflower oil may delay its lipid oxidation by minorly increasing its peroxide and acid values and reducing its iodine value compared to untreated sunflower oil.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"12 ","pages":"Article 101883"},"PeriodicalIF":2.5,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cancer continues to be one of the most common causes of mortality globally, claiming approximately eight million lives each year. Chemotherapy is the primary treatment protocol; however, a significant challenge is the solubility of most anticancer drugs, which adversely affect healthy tissues and hampers therapeutic efficacy. Cyclodextrin (CD) and its derivatives offer a promising solution to these limitations. Integrating nanotechnology with CDs in drug delivery systems represents a groundbreaking approach. CDs with unique structural and physicochemical features are invaluable agents that have confirmed their potential to perform numerous roles at the nanoscale level in pharmaceutical technology advancements to formulate novel drugs and enhance current formulations. The usage of CDs is not unknown, and there are multiple verified and marketed drug-CD complexes worldwide. Fluorouracil (5-FU), a widely used chemotherapeutic agent, shows efficacy against cancers such as colon, pancreas, breast, gastrointestinal tract, and ovaries. Recent advancements have demonstrated that CD-based nanotechnology systems enhance the therapeutic impact of 5-FU, promoting sustained health and prolonging the lifespan of both healthy and treated cells. This review explores the innovative application of CD nanocarrier systems for the encapsulation and targeted delivery of 5-FU in cancer treatment. It discusses the potential of these systems to improve anticancer efficacy and prevent cancer cell proliferation.
In this review, CDs, as precious materials in the fields of drug delivery and medicine owing to their unique properties, are briefly described first, primarily for readers who are not very familiar with this area. Then, synthesis methods and properties of 5-FU@CD nanocarriers are explained. In the following, recently developed various β-CD NPs, β-CD NCs, β-CD NEs, and β-CD NFs used for cancer treatment are debated. Recently developed practical uses of 5-FU@CD nanocarriers are presented. Finally, recent progress in cancer treatment and antimicrobial activity are expressed.
癌症仍然是全球最常见的死亡原因之一，每年约有 800 万人死于癌症。化疗是主要的治疗方案；然而，大多数抗癌药物的溶解性是一个重大挑战，它会对健康组织产生不利影响，阻碍治疗效果。环糊精（CD）及其衍生物为解决这些局限性提供了一个前景广阔的解决方案。在给药系统中将纳米技术与 CD 相结合是一种突破性的方法。具有独特结构和理化特性的环糊精是无价之宝，已证实其在纳米级制药技术进步中发挥众多作用的潜力，可用于配制新型药物和改进现有制剂。CD 的使用并非默默无闻，全球已有多种经过验证并上市销售的药物-CD 复合物。氟尿嘧啶（5-FU）是一种广泛使用的化疗药物，对结肠癌、胰腺癌、乳腺癌、胃肠道癌和卵巢癌有显著疗效。最新进展表明，基于 CD 的纳米技术系统能增强 5-FU 的治疗效果，促进健康细胞和接受治疗细胞的持续健康并延长其寿命。本综述探讨了 CD 纳米载体系统在癌症治疗中封装和靶向输送 5-FU 的创新应用。在这篇综述中，首先简要介绍了 CD 作为药物递送和医学领域的珍贵材料所具有的独特性质，这主要是为了帮助不太熟悉这一领域的读者。然后，介绍了 5-FU@CD 纳米载体的合成方法和性质。下面将讨论最近开发的用于癌症治疗的各种 β-CD NPs、β-CD NCs、β-CD NEs 和 β-CD NFs。介绍了最近开发的 5-FU@CD 纳米载体的实际用途。最后，介绍了癌症治疗和抗菌活性方面的最新进展。
{"title":"Cyclodextrin nanocarriers in Coordination Chemistry: Enhancing encapsulation and targeted delivery of 5-Fluorouracil for cancer treatment","authors":"Sara Payamifar , Amin Foroozandeh , Mehrab Pourmadadi , Majid Abdouss","doi":"10.1016/j.rechem.2024.101878","DOIUrl":"10.1016/j.rechem.2024.101878","url":null,"abstract":"<div><div>Cancer continues to be one of the most common causes of mortality globally, claiming approximately eight million lives each year. Chemotherapy is the primary treatment protocol; however, a significant challenge is the solubility of most anticancer drugs, which adversely affect healthy tissues and hampers therapeutic efficacy. Cyclodextrin (CD) and its derivatives offer a promising solution to these limitations. Integrating nanotechnology with CDs in drug delivery systems represents a groundbreaking approach. CDs with unique structural and physicochemical features are invaluable agents that have confirmed their potential to perform numerous roles at the nanoscale level in pharmaceutical technology advancements to formulate novel drugs and enhance current formulations. The usage of CDs is not unknown, and there are multiple verified and marketed drug-CD complexes worldwide. Fluorouracil (5-FU), a widely used chemotherapeutic agent, shows efficacy against cancers such as colon, pancreas, breast, gastrointestinal tract, and ovaries. Recent advancements have demonstrated that CD-based nanotechnology systems enhance the therapeutic impact of 5-FU, promoting sustained health and prolonging the lifespan of both healthy and treated cells. This review explores the innovative application of CD nanocarrier systems for the encapsulation and targeted delivery of 5-FU in cancer treatment. It discusses the potential of these systems to improve anticancer efficacy and prevent cancer cell proliferation.</div><div>In this review, CDs, as precious materials in the fields of drug delivery and medicine owing to their unique properties, are briefly described first, primarily for readers who are not very familiar with this area. Then, synthesis methods and properties of 5-FU@CD nanocarriers are explained. In the following, recently developed various β-CD NPs, β-CD NCs, β-CD NEs, and β-CD NFs used for cancer treatment are debated. Recently developed practical uses of 5-FU@CD nanocarriers are presented. Finally, recent progress in cancer treatment and antimicrobial activity are expressed.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"12 ","pages":"Article 101878"},"PeriodicalIF":2.5,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142539287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-28DOI: 10.1016/j.rechem.2024.101877
Sivakumar Sivalingam , Megala Rajendran , Jayagopi Gayathri , S. Anu , Jyoti Kavirajwar , Mihir Ghosh
ZrO-SyzygiumCuminicomposite was evaluated for its ability to inhibit corrosion on ASTM-415 carbon steel in 0.5 M H2SO4 by means of corrosion characterization methods, including phase angle/degree, frequency, potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), and gravimetric assessment. As the concentration of ZrO-SyzygiumCumini composite increased, the results demonstrated that the dynamic corroding area were resist completely., resulting in the creation of a barrier layer on the working electrode surface. Furthermore, even in extremely corrosive settings, the presence of ZrO-SyzygiumCumini complex inhibitor decreased the rate of corrosion of carbon steel. Recently synthesized ZrO-SyzygiumCumini compound was subjected to FT-IR, XRD, and SEM-EDAX spectroscopic analysis.
{"title":"A novel green synthesis of ZrO nanoparticles as a corrosion inhibitor on ASTM-415 carbon steel in 0.5 M H2SO4","authors":"Sivakumar Sivalingam , Megala Rajendran , Jayagopi Gayathri , S. Anu , Jyoti Kavirajwar , Mihir Ghosh","doi":"10.1016/j.rechem.2024.101877","DOIUrl":"10.1016/j.rechem.2024.101877","url":null,"abstract":"<div><div>ZrO-SyzygiumCuminicomposite was evaluated for its ability to inhibit corrosion on ASTM-415 carbon steel in 0.5 M H<sub>2</sub>SO<sub>4</sub> by means of corrosion characterization methods, including phase angle/degree, frequency, potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), and gravimetric assessment. As the concentration of ZrO-SyzygiumCumini composite increased, the results demonstrated that the dynamic corroding area were resist completely., resulting in the creation of a barrier layer on the working electrode surface. Furthermore, even in extremely corrosive settings, the presence of ZrO-SyzygiumCumini complex inhibitor decreased the rate of corrosion of carbon steel. Recently synthesized ZrO-SyzygiumCumini compound was subjected to FT-IR, XRD, and SEM-EDAX spectroscopic analysis.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"12 ","pages":"Article 101877"},"PeriodicalIF":2.5,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142587230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
An environmentally friendly and low-cost green approach currently gets great attention in medicinal fields. In the present work, we have successfully synthesized TiO2/ZnO heterostructure (TZH) by using the aqueous extract of Urtica Simensis (U. Simensis) leaf as a reducing and capping agent for the first time. The synthesized TiO2 and ZnO nanoparticles (NPs) and TZH were characterized by different characterization techniques. The XRD analysis verified the crystallinity and nanoscale crystallite size (12 nm) of the TZH. The TEM/HRTEM analysis verified the nanoscale particle size (36 nm) and formation of TiO2/ZnO interface within TZH. From the nitrogen adsorption–desorption isotherm analysis, the specific surface area, pore size, and pore volume of TZH were found to be 89.6 m2/g, 6.8 nm, and 0.054 cm3/g, respectively. The antibacterial potential of TiO2/ZnO was found to be the highest compared to both pristine TiO2 and ZnO for all four bacterial strains of S. aureus, S. pyogenes, P. aeruginosa, and E. coli. The maximum zones of inhibition of TZH were found to be 20.1, 21.3, 19.4, and 18.5 mm for S. pyogenes, S. aureus, E. coli, and P. aeruginosa, respectively. With this result, the green synthesis approach has a great future outlook for an antimicrobial application.
{"title":"Green synthesis of TiO2/ZnO heterostructure using Urtica Smensis leaf extract for antibacterial activity","authors":"Erit Atiek , Abebaw Matebu , Dereje Tsegaye , Getye Behailu , Buzuayehu Abebe","doi":"10.1016/j.rechem.2024.101880","DOIUrl":"10.1016/j.rechem.2024.101880","url":null,"abstract":"<div><div>An environmentally friendly and low-cost green approach currently gets great attention in medicinal fields. In the present work, we have successfully synthesized TiO<sub>2</sub>/ZnO heterostructure (TZH) by using the aqueous extract of <em>Urtica Simensis (U. Simensis)</em> leaf as a reducing and capping agent for the first time. The synthesized TiO<sub>2</sub> and ZnO nanoparticles (NPs) and TZH were characterized by different characterization techniques. The XRD analysis verified the crystallinity and nanoscale crystallite size (12 nm) of the TZH. The TEM/HRTEM analysis verified the nanoscale particle size (36 nm) and formation of TiO<sub>2</sub>/ZnO interface within TZH. From the nitrogen adsorption–desorption isotherm analysis, the specific surface area, pore size, and pore volume of TZH were found to be 89.6 m<sup>2</sup>/g, 6.8 <!--> <!-->nm, and 0.054 cm<sup>3</sup>/g, respectively. The antibacterial potential of TiO<sub>2</sub>/ZnO was found to be the highest compared to both pristine TiO<sub>2</sub> and ZnO for all four bacterial strains of <em>S. aureus, S. pyogenes, P. aeruginosa, and E. coli</em>. The maximum zones of inhibition of TZH were found to be 20.1, 21.3, 19.4, and 18.5 mm for <em>S. pyogenes, S. aureus, E. coli, and P. aeruginosa,</em> respectively. With this result, the green synthesis approach has a great future outlook for an antimicrobial application.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"12 ","pages":"Article 101880"},"PeriodicalIF":2.5,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A novel 0D organic–inorganic hybrid antimony-based halide [((R)-C8H12N)4](Sb2Cl10) was achieved through a slow evaporation method at room temperature. Single crystal X-ray diffraction analysis revealed that the compound crystallizes in the monoclinic system, within the P21 space group. The structure consists of(R)-1-phenylethylammonium (C8H12N)+cations and [Sb2Cl10]4− dimers, formed by edge-sharing distorted octahedra. The cohesion of the structure were ensured by N-H…Cl hydrogen bonds. Hirshfeld surface analysis indicated H…H interactions as the dominant intermolecular interaction contacts (42.4 %). Infrared and Raman spectroscopy confirmed the presence of organic cations and inorganic components. The thermogravimetric analysis demonstrated that the compound exhibits thermal stability up to 180 °C. Finally, Optical studies further suggest that this material holds significant promise for optical and optoelectronic applications.
通过室温下的缓慢蒸发法，获得了一种新型 0D 有机-无机杂化锑基卤化物 [((R)-C8H12N)4](Sb2Cl10) 。单晶 X 射线衍射分析表明，该化合物在 P21 空间群的单斜晶系中结晶。其结构由(R)-1-苯基乙基铵（C8H12N）+阳离子和[Sb2Cl10]4-二聚体组成，二聚体由边缘共享的扭曲八面体形成。结构的内聚力由 N-H...Cl 氢键保证。Hirshfeld 表面分析表明，H...H 相互作用是主要的分子间相互作用接触（42.4%）。红外光谱和拉曼光谱证实了有机阳离子和无机成分的存在。热重分析表明，该化合物具有高达 180 °C 的热稳定性。最后，光学研究进一步表明，这种材料在光学和光电应用方面大有可为。
{"title":"Structural asymmetry, physicochemical characterization and optical properties of a new luminescent zero dimensional organic-inorganic hybrid compound","authors":"Eya Toumi , Nour Elleuch , Sergiu Shova , Mohamed Boujelbene","doi":"10.1016/j.rechem.2024.101879","DOIUrl":"10.1016/j.rechem.2024.101879","url":null,"abstract":"<div><div>A novel 0D organic–inorganic hybrid antimony-based halide [((R)-C<sub>8</sub>H<sub>12</sub>N)<sub>4</sub>](Sb<sub>2</sub>Cl<sub>10</sub>) was achieved through a slow evaporation method at room temperature. Single crystal X-ray diffraction analysis revealed that the compound crystallizes in the monoclinic system, within the P2<sub>1</sub> space group. The structure consists of(R)-1-phenylethylammonium (C<sub>8</sub>H<sub>12</sub>N)<sup>+</sup>cations and [Sb<sub>2</sub>Cl<sub>10</sub>]<sup>4−</sup> dimers, formed by edge-sharing distorted octahedra. The cohesion of the structure were ensured by N-H…Cl hydrogen bonds. Hirshfeld surface analysis indicated H…H interactions as the dominant intermolecular interaction contacts (42.4 %). Infrared and Raman spectroscopy confirmed the presence of organic cations and inorganic components. The thermogravimetric analysis demonstrated that the compound exhibits thermal stability up to 180 °C. Finally, Optical studies further suggest that this material holds significant promise for optical and optoelectronic applications.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"12 ","pages":"Article 101879"},"PeriodicalIF":2.5,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142553758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-24DOI: 10.1016/j.rechem.2024.101873
Ali Akbar Amooey
Furfuryl alcohol is an important platform chemical with a wide range of industrial applications. In this study, the optimization of operating parameters for the production of furfuryl alcohol in a reactive distillation column was investigated using response surface methodology (RSM). The key operating parameters, such as pressure, reflux ratio, feed ratio, and residence time, were examined to determine their influence on the yield of furfuryl alcohol. A Box–Behnken design (BBD) was employed to model the relationships between the process variables and the responses. The optimal operating conditions were determined by maximizing the furfuryl alcohol yield. The results showed that feed ratio and reflux ratio had the most significant impact on the process performance. The optimal operating conditions were found to be a pressure of 0.4 bar, reflux ratio of 5.6, feed ratio of 1, and residence time of 14. Under these conditions, the furfuryl alcohol yield is 99 %.
{"title":"Optimization of operating parameters for furfuryl alcohol production in a reactive distillation column using response surface methodology","authors":"Ali Akbar Amooey","doi":"10.1016/j.rechem.2024.101873","DOIUrl":"10.1016/j.rechem.2024.101873","url":null,"abstract":"<div><div>Furfuryl alcohol is an important platform chemical with a wide range of industrial applications. In this study, the optimization of operating parameters for the production of furfuryl alcohol in a reactive distillation column was investigated using response surface methodology (RSM). The key operating parameters, such as pressure, reflux ratio, feed ratio, and residence time, were examined to determine their influence on the yield of furfuryl alcohol. A Box–Behnken design (BBD) was employed to model the relationships between the process variables and the responses. The optimal operating conditions were determined by maximizing the furfuryl alcohol yield. The results showed that feed ratio and reflux ratio had the most significant impact on the process performance. The optimal operating conditions were found to be a pressure of 0.4 bar, reflux ratio of 5.6, feed ratio of 1, and residence time of 14. Under these conditions, the furfuryl alcohol yield is 99 %.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"12 ","pages":"Article 101873"},"PeriodicalIF":2.5,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142539199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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