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Updated: Jan 25, 2026

Bio-inspired Polydopamine Surface Modification of Nanodiamonds and Its Reduction of Silver Nanoparticles
Published on: November 14, 2018
CaO-Nanoparticle-Enriched Polydopamine-Coated Hyper-Crosslinked Polymers as Heterogeneous Catalysts for the
Anuraj Varyambath1, Wen Liang Song1, Il Kim1
1BK21 PLUS Centre for Advanced Chemical Technology, Department of Polymer Science and Engineering, Pusan National University, Busan 609-735, Korea.
Abstract:
Biodiesel is an alternative fuel produced by the transesterification of vegetable oils in the presence of homogeneous or heterogeneous catalysts. Herein, we report the transesterification of vegetable oils using CaO nanoparticles supported on a polydopamine-coated hyper-crosslinked polymer, CaO@PDA-HCP as a heterogeneous catalyst. The effect of CaO-nanoparticle concentration (5-20 wt%) on catalysis performance was investigated, and the PDA-HCP surface was examined by X-ray diffraction, X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, field emission scanning electron microscopy, transmission electron microscopy, and energy dispersive X-ray spectroscopy. Basicity was shown to greatly influence the methyl ester content, and the best catalyst (15 wt% CaO) was demonstrated to be reusable without any loss of activity.
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