Abstract
A convenient method for preparing palladium nanocatalyst and its application in the Heck coupling reactions between various aryl halides and olefins are presented. Pd nanoparticles were photoreduced on anodic TiO2 nanotubes (ATNTs) to prepare the Pd@ATNTs catalyst by utilizing the large specific surface area of the ATNTs' hollow tubes. Pd nanoparticles were found to be highly dispersed on the walls of the nanotubes with an average particle size of 8.01 nm by characterization techniques. The heterogeneous Pd@ATNTs catalyst showed excellent catalytic efficiency (TOF up to 1010 h−1) due to the highly dispersed Pd within the ATNTs. Pd@ATNTs has remarkable properties of ease of separation and good reusability, allowing for at least 10 cycles of recovery and reuse without a significant decrease in catalytic activity.
Published Version
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