Removal of Pb(II) ions from aqueous systems using thiol-functionalized cobalt-ferrite magnetic nanoparticles

被引：40

作者：

Viltuznik, Branka ^{[1
]}

Kosak, Aljosa ^{[1
,2
]}

Zub, Yuriy L. ^{[3
]}

Lobnik, Aleksandra ^{[1
,2
]}

机构：

[1] Inst Environm Protect & Sensors, Maribor 2000, Slovenia

[2] Univ Maribor, Fac Mech Engn, Ctr Sensor Technol, SI-2000 Maribor, Slovenia

[3] NAS Ukraine, Chuiko Inst Surface Chem, UA-03164 Kiev, Ukraine

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2013年 / 68卷 / 03期

关键词：

Cobalt-ferrite; Tetraethoxy silane; 3-Mercaptopropyl trimethoxysilane; Pb2+ ions; HEAVY-METAL IONS; MESOPOROUS SILICA; ADSORPTION; RECOVERY; KINETICS; WATER;

D O I：

10.1007/s10971-013-3072-z

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We have investigated the removal of Pb2+ ions from water using thiol-functionalized, cobalt-ferrite, magnetic nanoparticles. These magnetic nanoparticles were prepared using the co-precipitation method and their surfaces were modified with tetraethoxy silane and 3-mercaptopropyl trimethoxysilane in order to provide a sufficient surface concentration of the thiol (-SH) functional groups. The adsorption of the Pb2+ ions from the aqueous solutions onto the thiol-functionalized, cobalt-ferrite, magnetic nanoparticles was studied. The investigated parameters include the pH value of the model water, the concentration of the adsorbent, the contact time and the temperature of adsorption. The removal of the Pb2+ was found to be greater at the higher pH values and increasing the temperature was also found to increase the removal of Pb2+ ions.

引用

页码：365 / 373

页数：9

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