Green Biosynthesis of Palladium Oxide Nanoparticles Using Dictyota indica Seaweed and its application for adsorption
سال انتشار: 1397
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 359
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شناسه ملی سند علمی:
JR_JWENT-3-4_006
تاریخ نمایه سازی: 30 دی 1397
چکیده مقاله:
The green synthesis of palladium oxide nanoparticles using Dictyota indica seaweed extract wasinvestigated. Dictyotales is a large order in the brown algae (class Phaeophyceae). The color of thereaction 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 UVVisibleanalysis showed the formation of palladium oxide nanoparticles. SEM and TEM analyses presentedthe palladium oxide nanoparticles have a spherical shape and based on DLS analysis with the averageparticle diameter of 19nm. The comparisons of the nanoparticle size with different biological synthesiswere studied which revealed this methodology offers the smallest size. The crystallographic parametersof 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 indicatedthe presence of a palladium oxide group in the product. The removal efficiency of cadmium by thepalladium oxide nanoparticles was investigated to optimize the pH, contact time, dose of adsorbent andconcentration of cadmium. The results showed that optimum conditions for cadmium removal from waterwere obtained at pH 8, 500 mg/l adsorbent dose and 20 min contact time, wherein in these circumstancesthe removal of cadmium was 82.82%. The adsorption isotherms primacy was as follows, LangmuirR2=0.9904> Freundlich R2=0.9857> Temkin R2=0.8791.
کلیدواژه ها:
نویسندگان
Atiye Yazdani Shargh
Department of Environmental Sciences, School of Natural Resources and Environment, University of Birjand, Birjand, Iran
Mohammad Hossein Sayadi
Department of Environmental Sciences, School of Natural Resources and Environment, University of Birjand, Birjand, Iran
Ava Heidari
Department of Environmental Science, Faculty of Natural Resources and Environment, Ferdowsi University of Mashhad, Mashhad, Iran