Fabrication of Porous Phosphate/Carbonate Composites: Smart Fertilizer with Bimodal Controlled-Release Kinetics and Glyphosate Adsorption Ability.

ABSTRACT: A simple method to prepare phosphate/carbonate composites for use as porous sponge-like phosphate fertilizers (ps-PO₄Fs) is presented. The composites ps-PO₄Fs were prepared by ion-exchange implantation of phosphate onto the surface of vaterite-phase calcium carbonate (CaCO₃) microparticles. The ps-PO₄Fs obtained under the optimized conditions were found to contain a nanoscale porous network of calcium phosphate covering the CaCO₃ support. In addition, ps-PO₄Fs exhibited two distinct phosphate release modes having different kinetics: a fast-release step over the initial 24 h period following a parabolic diffusion model, indicating controlled diffusion from external surfaces/edges, and a second slow-release step over the cours

SUBMITTER: Yukhajon P 

PROVIDER: S-EPMC9096975 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature