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쿠마르디네쉬,이상봉,전용현,박찬희,김철생 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.65 No.-
Here, we report multi-component plasmonic core–shell nanodendrites (Pt@rGO-AuNPs) composed of nano-sized reduced graphene oxide coated gold nanoparticles as a multiple photo-system modality. The prepared Pt@rGO-AuNPs took 40, 60, and 75 min with the pseudo first-order rate constants 0.112 min−1 0.069 min−1 and 0.048 min−1 to completely degrade (≥98%) methylene blue, methyl red, and methyl orange, respectively, at room temperature. Pt@rGO-AuNPs also showed a high photothermal effect (temperature ≥43° C in 5 min, 808 nm laser, 6 W/cm2) and found to have robust morphology during recyclability for at least five cycles in both photocatalytic and photothermal processes.
쿠마르디네쉬,국 현,Amjad Ali 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.38 No.-
One-pot solvent-free amidation of natural triglycerides (pongamia and jatropha oil) was investigatedusing Li or Na or K doped CaO nanoparticles as heterogeneous catalyst. Complete conversion (98 2%) ofpongamia oil and jatropha oil to fatty diethanolamides has been obtained in 0.75 h and 1 h, respectively,using 5 wt% of Li doped CaO (2-LiH/CaO-400) and 6:1 molar ratio of diethanolamine/oil at 90 8C. The samecatalyst was active up to six catalytic recycles for amidation of both feedstocks. The rate of reaction andactivation energy for the same reaction process was calculated as 0.101 min 1 and 48.3 kJ mol 1,respectively.