Biosynthesized silica-based zinc oxide nanocomposites for the sequestration of heavy metal ions from aqueous solutions

• DOI: 10.1016/j.jksus.2022.101996
• Publication Date: 2022-03-26T22:59:29Z
• Authors: Rishav Garg; Rajni Garg; Nnabuk Okon Eddy; Abdulaziz Ibrahim...; Sattam Fahad Almojil; Mohammad Amir Khan; Seung Ho Hong
• Keywords: Langmuir adsorption model

In the present study, biosynthesized silica-based zinc oxide nanocomposites (nano-SZO) have been explored as nanoadsorbent for sequestrating heavy metal ions viz. Ni2+, Cd2+and Cu2+ from synthetic medium. The obtained by utilization of agricultural waste means green approach with an average particle size 30.52 nm and a pH at zero-point charge 4.8. process has optimized equal to 5.0 Ni2+ 6.0 Cd2+. Adsorption was best described Langmuir isotherm highest value maximum adsorption capacity, qm nano-SZO (32.53 mg/g), (32.10 Cd2+ (30.98 mg/g). studied are considerably adsorbed through chemisorption active binding polyhydroxy functionalities attached surface confirming eco-friendly efficient nano adsorbents sequestration ions.