Journal
MATERIALS LETTERS
Volume 301, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2021.130257
Keywords
Polyamine dendrimer; Magnetite; Au nanoparticles; Recyclable catalyst; Alcohol oxidation; modified PAMAM dendirmer
Funding
- SERB, India [EEQ/2017/000374]
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A new nanohybrid material was synthesized and used as a template to achieve size and shape-controlled gold nanoparticles, which were successfully exploited as a green and sustainable catalyst for selective oxidation of alcohols.
Magnetite cored PAMAM G3 dendrimer was synthesized and amide groups were reduced using LAH to afford amine groups enriched polyamine dendrimer; subsequently surface was grafted with succinic anhydride to attain carboxylic acid terminated polyamine dendrimer on magnetite core. This nanohybrid material was used as template to synthesize Au nanoparticle via sequestering metal ion followed by chemical reduction process. Analytical data evidenced that size and shape-controlled ultrafine gold nanoparticles of 1-2 nm size was achieved using this lower generation dendrimer template. Magnetite cored polyamine G3 dendrimer encapsulated Au nanoparticles was exploited as a green and sustainable catalyst for the selective oxidation of alcohol under mild reaction conditions and effectively reused for five catalytic cycles.
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