{"title":"Photochemical oxidation of benzylic alcohols at natural sunlight utilizing CuO@ZnFe-LDH/TEMPO and air as the oxidant","authors":"Elham Sadat Mortazavi, Mehri Salimi, Sara Sobhani","doi":"10.1007/s11051-024-06159-0","DOIUrl":null,"url":null,"abstract":"<div><p>A CuO@ZnFe-LDH composite, prepared from the co-precipitation of Cu<sup>2+</sup> with ZnFe-LDH, served as an environmentally friendly photocatalyst. This catalyst was implemented in the selective oxidation of various primary and secondary alcohols to aldehydes or ketones utilizing air as the oxidant, 2,2,6,6-tetramethylpiperidine 1-oxyl radical (TEMPO), and sunlight as the light source. The yields varied from low to excellent. It was notable that the oxidation process also allowed for very selective conversion of benzylic alcohols that had phenolic hydroxyl groups. Moreover, leaching of copper from the catalyst during the reaction was minimal. Also, CuO@ZnFe-LDH could be effectively reused, while maintaining its high catalytic activity.</p></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"27 1","pages":""},"PeriodicalIF":2.1000,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Nanoparticle Research","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s11051-024-06159-0","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
A CuO@ZnFe-LDH composite, prepared from the co-precipitation of Cu2+ with ZnFe-LDH, served as an environmentally friendly photocatalyst. This catalyst was implemented in the selective oxidation of various primary and secondary alcohols to aldehydes or ketones utilizing air as the oxidant, 2,2,6,6-tetramethylpiperidine 1-oxyl radical (TEMPO), and sunlight as the light source. The yields varied from low to excellent. It was notable that the oxidation process also allowed for very selective conversion of benzylic alcohols that had phenolic hydroxyl groups. Moreover, leaching of copper from the catalyst during the reaction was minimal. Also, CuO@ZnFe-LDH could be effectively reused, while maintaining its high catalytic activity.
期刊介绍：
The objective of the Journal of Nanoparticle Research is to disseminate knowledge of the physical, chemical and biological phenomena and processes in structures that have at least one lengthscale ranging from molecular to approximately 100 nm (or submicron in some situations), and exhibit improved and novel properties that are a direct result of their small size.
Nanoparticle research is a key component of nanoscience, nanoengineering and nanotechnology.
The focus of the Journal is on the specific concepts, properties, phenomena, and processes related to particles, tubes, layers, macromolecules, clusters and other finite structures of the nanoscale size range. Synthesis, assembly, transport, reactivity, and stability of such structures are considered. Development of in-situ and ex-situ instrumentation for characterization of nanoparticles and their interfaces should be based on new principles for probing properties and phenomena not well understood at the nanometer scale. Modeling and simulation may include atom-based quantum mechanics; molecular dynamics; single-particle, multi-body and continuum based models; fractals; other methods suitable for modeling particle synthesis, assembling and interaction processes. Realization and application of systems, structures and devices with novel functions obtained via precursor nanoparticles is emphasized. Approaches may include gas-, liquid-, solid-, and vacuum-based processes, size reduction, chemical- and bio-self assembly. Contributions include utilization of nanoparticle systems for enhancing a phenomenon or process and particle assembling into hierarchical structures, as well as formulation and the administration of drugs. Synergistic approaches originating from different disciplines and technologies, and interaction between the research providers and users in this field, are encouraged.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
