Department of Chemistry, Anna University, University College of Engineering - Dindigul, Reddiyarchatram, Dindigul 624 622, Tamilnadu, India.
Faculty of Civil Engineering, Department of Landscape and Water Conservation, Czech Technical University in Prague, Thakurova 7, 166 29, Prague 6, Czech Republic.
J Colloid Interface Sci. 2022 Sep 15;622:228-238. doi: 10.1016/j.jcis.2022.04.097. Epub 2022 Apr 22.
The template preparation of hydroxyapatit (HAp) layered lanthanum-benzene tricarboxylic acid based metal organic frameworks (La-BTC MOFs) abbreviated as HAp-La-BTC-MOFs has been investigated here for defluoridation of water. The nucleation and growth of La-based MOFs was carried out in the prepared HAp hard template using layer-by-layer (LBL) technique. The coulomb and chelation contacts on HAp surface between Ca ions and COO- organic ligands of La-BTC MOFs play vital roles in the preparation process. The batch experiments were employed to assess the defluoridation capacity (DC) of HAp-La based MOFs. The physicochemical properties of HAp-La based MOFs were investigated by various instrumentation techniques. To identify the nature, order and feasibility of HAp-La based MOFs towards defluoridation was examined by adsorption kinetics, isotherms and thermodynamics studies. The mechanism of defluoridation using HAp-La based MOFs were explained in detail. The field and reusability investigations of HAp-La-BTC MOFs also explored to find the potential applicability.
本文研究了羟基磷灰石（HAp）层状镧苯三甲酸基金属有机骨架（La-BTC MOFs）的模板制备，用于水的除氟。使用层层（LBL）技术在制备的 HAp 硬模板中进行基于 La 的 MOFs 的成核和生长。HAp 表面上 Ca 离子与 La-BTC MOFs 的 COO-有机配体之间的库仑和螯合接触在制备过程中起着至关重要的作用。采用批量实验评估 HAp-La 基 MOFs 的除氟能力（DC）。通过各种仪器技术研究了 HAp-La 基 MOFs 的物理化学性质。通过吸附动力学、等温线和热力学研究来鉴定 HAp-La 基 MOFs 对除氟的性质、顺序和可行性。详细解释了使用 HAp-La 基 MOFs 进行除氟的机理。还探索了 HAp-La-BTC MOFs 的现场和可重复使用性研究，以寻找潜在的适用性。
