Title :
Studies on adsorption of m-nitrophenol on hydroxyapatite nanopowders
Author :
Zhu, Jinlin ; Lin, Kaili
Author_Institution :
Xinchang Pharm. Factory, Zhejiang Med. Co., Ltd., Xinchang, China
Abstract :
Hydroxyapatite (HAp) nanopowders were prepared by chemical precipitation method, and the powders were characterized by FETEM, XRD and ICP-AES technologies. The adsorption results of m-nitrophenol on HAp nanopowders in aqueous showed that the adsorption capacity increased with the increase of the phenol concentration and the temperatures. The adsorption process was in accorded with Freundlich and Langmuir equations. The adsorption behavior was proved to be a spontaneous, endothermic and physical process with increasing entropy.
Keywords :
Auger electron spectra; X-ray diffraction; adsorption; bioceramics; calcium compounds; entropy; nanofabrication; nanoparticles; precipitation (physical chemistry); transmission electron microscopy; Ca10(PO4)6(OH)2; FETEM; Freundlich-Langmuir equations; ICP-AES; XRD; adsorption; chemical precipitation method; endothermic process; entropy; hydroxyapatite nanopowders; m-nitrophenol; Chemicals; Entropy; Nanoparticles; Powders; Water pollution; X-ray scattering; Adsorption; Hydroxyapatite; Isotherm; Nanopowders; m-nitrophenol;
Conference_Titel :
Consumer Electronics, Communications and Networks (CECNet), 2011 International Conference on
Conference_Location :
XianNing
Print_ISBN :
978-1-61284-458-9
DOI :
10.1109/CECNET.2011.5768399
