利用CuO@ZnFe-LDH/TEMPO和空气作为氧化剂，在自然光下对苯基醇进行光化学氧化

IF 2.1 4区材料科学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Journal of Nanoparticle Research Pub Date : 2024-12-30 DOI:10.1007/s11051-024-06159-0

Elham Sadat Mortazavi, Mehri Salimi, Sara Sobhani

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引用次数: 0

摘要

将Cu2+与ZnFe-LDH共沉淀法制备了一种CuO@ZnFe-LDH复合材料作为环境友好型光催化剂。该催化剂以空气为氧化剂，2,2,6,6-四甲基哌啶1-氧自由基（TEMPO）为光源，用于多种伯、仲醇选择性氧化制醛或酮。产量从低到高不等。值得注意的是，氧化过程还允许具有酚羟基的苯基醇的选择性转化。此外，在反应过程中，铜从催化剂中浸出是最小的。此外，CuO@ZnFe-LDH可以有效地重复使用，同时保持其高催化活性。

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Photochemical oxidation of benzylic alcohols at natural sunlight utilizing CuO@ZnFe-LDH/TEMPO and air as the oxidant

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.

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来源期刊

Journal of Nanoparticle Research 工程技术-材料科学：综合

CiteScore

4.40

自引率

4.00%

发文量

198

审稿时长

3.9 months

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.