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用于潜在水污染治理的β-环糊精/羟基磷灰石复合材料的超声测量

Ultrasonic Measurements on β Cyclodextrin/Hydroxyapatite Composites for Potential Water Depollution.

作者信息

Predoi Daniela, Predoi Mihai Valentin, Iconaru Simona Liliana, Ech Cherif El Kettani Moncef, Leduc Damien, Prodan Alina Mihaela

机构信息

National Institute of Materials Physics, 405A Atomistilor Street, P.O. Box MG7, Magurele 077125, Romania.

University Politehnica of Bucharest, BN 002, 313 Splaiul Independentei, Sector 6, Bucharest 060042, Romania.

出版信息

Materials (Basel). 2017 Jun 21;10(6):681. doi: 10.3390/ma10060681.

DOI:10.3390/ma10060681
PMID:28773041
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5554062/
Abstract

This paper presents structural, morphological and preliminary ultrasonic characterizations of the β-Cyclodextrin/hydroxyapatite (CD-HAp) composites synthesized by an adapted co-precipitation method. The structural and morphological properties were evaluated by Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDX). The specific surface area, pore size and pore volume were determined using the methods of Brunauer-Emmett-Teller (BET) and Barrett-Joyner-Halenda (BJH), respectively. The novelty of our study consists in preliminary ultrasonic measurements conducted on CD-HAp composite, uniformly dispersed in distilled water. The benefit of this non-destructive method was to facilitate and simplify the characterization techniques of nanoparticles. Our experiments proved that the efficiency of lead ion removal by CD-HAp composites depended on the initial concentration of lead. The maximum adsorption capacity of the solid phase, for Pb indicated a higher rate of removal by the CD-HAp_2. These adsorption results bring valuable insight into the beneficial contribution of our compounds, for the removal of heavy metal ions from aqueous solutions. Furthermore, in the present study, was evaluated the toxic effect of lead ions adsorbed by hydroxyapatite from contaminated water on HeLa cells.

摘要

本文介绍了通过改进的共沉淀法合成的β-环糊精/羟基磷灰石（CD-HAp）复合材料的结构、形态及初步超声特性。通过扫描电子显微镜（SEM）和能量色散X射线光谱（EDX）对结构和形态特性进行了评估。分别采用布鲁诺尔-埃米特-泰勒（BET）法和巴雷特-乔伊纳-哈伦达（BJH）法测定比表面积、孔径和孔体积。我们研究的新颖之处在于对均匀分散在蒸馏水中的CD-HAp复合材料进行了初步超声测量。这种无损方法的好处是便于并简化了纳米颗粒的表征技术。我们的实验证明，CD-HAp复合材料去除铅离子的效率取决于铅的初始浓度。对于Pb，固相的最大吸附容量表明CD-HAp_2的去除率更高。这些吸附结果为我们的化合物从水溶液中去除重金属离子的有益贡献提供了有价值的见解。此外，在本研究中，评估了从受污染水中吸附铅离子的羟基磷灰石对HeLa细胞的毒性作用。

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