Direct synthesis of ordered N-methylimidazolium functionalized mesoporous silica as highly efficient anion exchanger of Cr(VI)

	Direct synthesis of ordered N-methylimidazolium functionalized mesoporous silica as highly efficient anion exchanger of Cr(VI)
	Zhu LL ; Zhang C ; Liu YH ; Wang DY ; Chen J
刊名	journal of materials chemistry
	2010
卷号	20 期号:8 页码:1553-1559
关键词	HEAVY-METAL IONS ORGANICALLY MODIFIED SILICATES AQUEOUS-SOLUTION HEXAVALENT CHROMIUM HIGH-CAPACITY QUATERNIZED POLY(4-VINYLPYRIDINE) STATIONARY-PHASE MOLECULAR-SIEVE CO-CONDENSATION BINDING-SITES
ISSN号	0959-9428
通讯作者	chen j
中文摘要	ordered n-methylimidazolium functionalized mesoporous silica (sba-15) anion exchangers were directly synthesized by co-condensation of tetraethoxysilane with 1-methyl-3(triethoxysilylpropyl)imidazolium chloride. the prepared samples with rod-like morphology showed high surface areas (> 400 m(2) g(-1)), well-ordered pores (> 58 angstrom), and excellent thermal stability up to 387 degrees c. the adsorption behaviors of cr(vi) from aqueous solution on the anion exchangers were studied using the batch method. the anion exchangers had high adsorption capacity ranging from 50.8 to 90.5 mg g(-1), over a wider ph range (1-8) than amino functionalized mesoporous silica. the adsorption rate was fast, and the maximum adsorption was obtained at ph 4.6. the adsorption data for the anion exchangers were consistent with the langmuir isotherm equation. most active sites of the anion exchangers were easily accessible. the mixed solution of 0.1 mol l-1 nh3 center dot h2o and 0.5 mol l-1 nh4cl was effective desorption solution, and 95% of cr(vi) could be desorbed.
收录类别	SCI
语种	英语
WOS记录号	WOS:000274396900022
公开日期	2010-05-27
内容类型	期刊论文
源URL	[http://202.98.16.49/handle/322003/12423]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Zhu LL,Zhang C,Liu YH,et al. Direct synthesis of ordered N-methylimidazolium functionalized mesoporous silica as highly efficient anion exchanger of Cr(VI)[J]. journal of materials chemistry,2010,20(8):1553-1559.
APA	Zhu LL,Zhang C,Liu YH,Wang DY,&Chen J.(2010).Direct synthesis of ordered N-methylimidazolium functionalized mesoporous silica as highly efficient anion exchanger of Cr(VI).journal of materials chemistry,20(8),1553-1559.
MLA	Zhu LL,et al."Direct synthesis of ordered N-methylimidazolium functionalized mesoporous silica as highly efficient anion exchanger of Cr(VI)".journal of materials chemistry 20.8(2010):1553-1559.