Title :
A New Method of Synthesizing Thiol-Functionalized Silica and Its Fixation of Hg(II) in Water
Author :
Su Jixin ; Zhang Shenping ; Zhang Mingbo ; Dong Feifei ; Qu Wen
Author_Institution :
Sch. of Environ. Sci. & Eng., Shandong Univ., Jinan, China
Abstract :
Thiol-functionalized silica was successfully synthesized by cheaper chloropropyl trichlorosilane and NaHS instead of expensive 3-Mercaptopropyltriethoxysilylane agent. The silica-SH and its precursor were characterized by BET, FT-IR, TOC and element analysis. Surface coverage density of silica-chloropropyl and silica-SH was 2.5mmol/g and 1.56mmol/g, respectively. The silica-SH was used as sorbent to fix heavy metal ions--Hg(II), and showed great potential for fixation of Hg (II) from water, the saturation adsorption capacity for Hg(II) reached as high as 0.235mmol/g.
Keywords :
Fourier transform spectra; biochemistry; infrared spectra; organic compounds; silicon compounds; water; 3-Mercaptopropyltriethoxysilylane agent; Fourier transform infrared spectroscopy; SiO2; chloropropyl trichlorosilane; element analysis; fixation; saturation adsorption capacity; surface coverage density; thiol functionalized silica; water; Chemicals; Inorganic materials; Mercury (metals); Mesoporous materials; Ocean temperature; Organic materials; Sea surface; Silicon compounds; Solids; Surface resistance;
Conference_Titel :
Bioinformatics and Biomedical Engineering (iCBBE), 2010 4th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-4712-1
Electronic_ISBN :
2151-7614
DOI :
10.1109/ICBBE.2010.5517542
