TY - JOUR ID - 33350 TI - Green Biosynthesis of Palladium Oxide Nanoparticles Using Dictyota indica Seaweed and its application for adsorption JO - Journal of Water and Environmental Nanotechnology JA - JWENT LA - en SN - 2476-7204 AU - Yazdani, Atiyeh AU - Sayadi, Mohammad AU - Heidari, Ava AD - Department of Environmental Sciences, School of Natural Resources and Environment, University of Birjand, Birjand, Iran AD - Department of Environmental Science, Faculty of Natural Resources and Environment, Ferdowsi University of Mashhad, Mashhad, Iran Y1 - 2018 PY - 2018 VL - 3 IS - 4 SP - 337 EP - 347 KW - Green synthesis KW - nanoparticles KW - Dictyota indica extract KW - Adsorption KW - Cadmium DO - 10.22090/jwent.2018.04.006 N2 - The green synthesis of palladium oxide nanoparticles using Dictyota indica seaweed extract was investigated. Dictyotales is a large order in the brown algae (class Phaeophyceae). The color of the reaction mixture changed which indicated the formation of palladium oxide nanoparticles. UV-Visible, SEM, TEM, XRD, and FTIR analysis determined the characteristics of synthesized nanoparticles. The UV-Visible analysis showed the formation of palladium oxide nanoparticles. SEM and TEM analyses presented the palladium oxide nanoparticles have a spherical shape and based on DLS analysis with the average particle diameter of 19nm. The comparisons of the nanoparticle size with different biological synthesis were studied which revealed this methodology offer smallest size. The crystallographic parameters of the synthesized Pd nanoparticles were as follows: crystalline structure (cubic), space group (Fm-3m), and lattice parameter (a=5.6500, b=5.6500, c=5.6500, α=90, β=90, and γ=90). FTIR analysis indicated the presence of a palladium oxide group in the product. The removal efficacy of cadmium by the palladium oxide nanoparticles was investigated to optimize the pH, contact time, dose of adsorbent and concentration of cadmium. The results showed that optimum conditions for cadmium removal from water were obtained at pH 8, 500 mg/l adsorbent dose and 20 min contact time, wherein in these circumstances the removal of cadmium was 82.82%. The adsorption isotherms primacy was as follows, Langmuir R2=0.9904> Freundlich R2=0.9857> Temkin R2=0.8791. UR - https://www.jwent.net/article_33350.html L1 - https://www.jwent.net/article_33350_2a9e3d6119e0f2edeb28b54e3a3df331.pdf ER -