Given the wide range of uses for lanthanum phosphate nanoparticles, a simple and effective production technique is desperately needed. In this work, phytic acid as a source of phosphate and tannic acid as a polyphenol rich material were used as green reagents in a simple hydrothermal method to fabricate lanthanum phosphate-carbon (LaPO4-C) nanoparticles. Field Emission Scanning Electron Microscopy (FESEM), Energy-dispersive X-ray spectroscopy (EDX), X-Ray Diffraction (XRD) analysis, Fourier Transform Infrared (FT-IR) Spectrophotometry, and Transmission Electron Microscopy (TEM) were used to characterize the synthesized LaPO4-C nanoparticles. The outcomes demonstrated the effective synthesis of LaPO4-C nanoparticles with diameters ranging from 30 to 40 nm. The fabricated LaPO4-C NPs were then used as adsorbent for elimination of lead ion (Pb2+) from water samples. The best adsorption conditions were found to be pH 5–6, an adsorbent dosage of 8 mg, and a contact period of 40 minutes (more than 90 % removal percentage for 50 mg L-1 Pb2+). The interpretation of different isotherm models also show that the adsorption of Pb2+ ions onto the LaPO4-C NPs is a monolayer phenomenon (Langmuir isotherm) with a maximum adsorption capacity of 333.33 mg g-1. Moreover, the adsorption kinetic models represents that the pseudo first order kinetic is the appropriate model for prediction of kinetic results.

You have access to this article

Please wait while we load your content... Something went wrong. Try again?