Facet-Controlled Growth of Hydroxyapatite for Effectively Removing Pb from Aqueous Solutions.

ABSTRACT: To address the growing concerns regarding severe water pollution, effective and environmentally friendly adsorbents must be identified. In this study, we prepared hydroxyapatite (HAp, Ca₁₀(PO₄)₆(OH)₂) as an eco-friendly absorbent via simple precipitation and obtained rod- (r-HAp) and plate-shaped HAp (p-HAp). The approach to obtaining p-HAp involved a low pH titration rate, promoting growth along the c-axis due to the adsorption of OH^- on the (110) facet. Conversely, r-HAp was obtained by maintaining a high concentration of OH^- during the initial stage through rapid pH titration, leading to a stronger restrictive effect on the growth of positively charged a(b)-planes. p-HAp demonstrated superior adsorpti

SUBMITTER: Kim HJ 

PROVIDER: S-EPMC10795148 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature