{"title":"Polyoxometalate supported on silica-cobalt ferrite: As an efficient catalyst for the synthesis of benzimidazoles","authors":"","doi":"10.1016/j.jorganchem.2024.123263","DOIUrl":null,"url":null,"abstract":"<div><p>In this work, synthesized a new nanocatalyst (CoFe<sub>2</sub>O<sub>4</sub>@SiO<sub>2</sub>-PW) by anchoring Kegging-type polyoxometalate (H<sub>3</sub>PW<sub>12</sub>O<sub>40</sub>) on the silica-cobalt ferrite nanoparticles. Cobalt ferrite nanoparticles were covalently modified with 3-aminopropyltriethoxysilane (APTES) to provide the hybrid catalyst, followed by polyoxometalate anchoring onto the cobalt ferrite nanoparticles. To give the hybrid catalyst, cobalt ferrite nanoparticles were covalently modified with 3- aminopropyltrimethoxysilane, followed by polyoxometalate anchoring onto the cobalt ferrite nanoparticles. The new catalyst, CoFe<sub>2</sub>O<sub>4</sub>@SiO<sub>2</sub>-PW was characterized using FT-IR, TG, XRD, SEM, EDX, TEM, BET, and VSM. The CoFe<sub>2</sub>O<sub>4</sub>@SiO<sub>2</sub>-PW has been used as an efficient catalyst for the fabrication the benzimidazole derivatives. Furthermore, the catalyst can be easily reused seven consecutive times and recovered in the production of benzimidazoles without noticeable leaching of W and Fe and noticeable change in activity, demonstrating the nanocatalyst's chemical stability.</p></div>","PeriodicalId":374,"journal":{"name":"Journal of Organometallic Chemistry","volume":null,"pages":null},"PeriodicalIF":2.1000,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Organometallic Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022328X24002584","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
In this work, synthesized a new nanocatalyst (CoFe2O4@SiO2-PW) by anchoring Kegging-type polyoxometalate (H3PW12O40) on the silica-cobalt ferrite nanoparticles. Cobalt ferrite nanoparticles were covalently modified with 3-aminopropyltriethoxysilane (APTES) to provide the hybrid catalyst, followed by polyoxometalate anchoring onto the cobalt ferrite nanoparticles. To give the hybrid catalyst, cobalt ferrite nanoparticles were covalently modified with 3- aminopropyltrimethoxysilane, followed by polyoxometalate anchoring onto the cobalt ferrite nanoparticles. The new catalyst, CoFe2O4@SiO2-PW was characterized using FT-IR, TG, XRD, SEM, EDX, TEM, BET, and VSM. The CoFe2O4@SiO2-PW has been used as an efficient catalyst for the fabrication the benzimidazole derivatives. Furthermore, the catalyst can be easily reused seven consecutive times and recovered in the production of benzimidazoles without noticeable leaching of W and Fe and noticeable change in activity, demonstrating the nanocatalyst's chemical stability.
期刊介绍:
The Journal of Organometallic Chemistry targets original papers dealing with theoretical aspects, structural chemistry, synthesis, physical and chemical properties (including reaction mechanisms), and practical applications of organometallic compounds.
Organometallic compounds are defined as compounds that contain metal - carbon bonds. The term metal includes all alkali and alkaline earth metals, all transition metals and the lanthanides and actinides in the Periodic Table. Metalloids including the elements in Group 13 and the heavier members of the Groups 14 - 16 are also included. The term chemistry includes syntheses, characterizations and reaction chemistry of all such compounds. Research reports based on use of organometallic complexes in bioorganometallic chemistry, medicine, material sciences, homogeneous catalysis and energy conversion are also welcome.
The scope of the journal has been enlarged to encompass important research on organometallic complexes in bioorganometallic chemistry and material sciences, and of heavier main group elements in organometallic chemistry. The journal also publishes review articles, short communications and notes.