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      https://www.ias.ac.in/article/fulltext/boms/040/01/0129-0137

    • Keywords

       

      Silver nanoparticles; thermodynamics; kinetics; biosynthesis; plasmon bands.

    • Abstract

       

      Lasienthra africanum (LA) leaf extract was employed for nano-silver synthesis. The reducing effect of the plant extract was investigated at different times, pH, temperatures and concentrations. The effect of variouskinetic parameters was studied using UV–vis spectroscopy. Blue-shifted surface plasmon bands indicating smaller sized nanoparticles were obtained at neutral pH (6.8–7.0), temperature of 65$^{\circ}$C and concentration ratio of 1:10 (leafextract: AgNO$_3$) with increasing reaction times under the reaction conditions. The kinetics of the reaction followed pseudo-first- and -second-order rate equations, and was thermodynamically favoured at higher time. Sphericallyshaped nanoparticles were obtained at different reaction conditions.

    • Author Affiliations

       

      ELIAS E ELEMIKE1 2 3 DAMIAN C ONWUDIWE1 2 OLAYINKA ARIJEH3 HENRY U NWANKWO1 2

      1. Material Science Innovation and Modelling (MaSIM) Research Focus Area, Faculty of Agriculture, Science and Technology, North-West University, Mafikeng Campus, Private Bag X2046, Mmabatho 2735, South Africa
      2. Department of Chemistry, School of Mathematics and Physical Sciences, Faculty of Agriculture, Science and Technology, North-West University, Mafikeng Campus, Private Bag X2046, Mmabatho 2735, South Africa
      3. Department of Chemistry, College of Science, Federal University of Petroleum Resources, PMB 1221, Effurun, Nigeria
    • Dates

       
  • Bulletin of Materials Science | News

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      Posted on July 25, 2019

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