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

fYear

2011

fDate

16-18 April 2011

Firstpage

3548

Lastpage

3551

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics, Communications and Networks (CECNet), 2011 International Conference on

Conference_Location

XianNing

Print_ISBN

978-1-61284-458-9

Type

conf

DOI

10.1109/CECNET.2011.5768399

Filename

5768399