Synthesis of novel thiol-functionalized mesoporous silica nanorods and their sorbent properties on heavy metals

doi:10.1007/s11706-012-0174-4

Front Mater Sci

2012, Vol. 6

Issue (3) : 278-282 https://doi.org/10.1007/s11706-012-0174-4

COMMUNICATION

Synthesis of novel thiol-functionalized mesoporous silica nanorods and their sorbent properties on heavy metals

Xi CHEN¹, Qiang CAI¹(

), Lin-Hao SUN¹, Wei ZHANG², Xing-Yu JIANG²

1. Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China; 2. National Center for Nanoscience and Technology, Beijing 100190, China

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Abstract

Novel thiol-functionalized mesoporous silica nanorods (MSNRs) were synthesized through a base co-condensation method, in which two organoalkoxysilanes, tetraethoxylsilane (TEOS) and bis[3-(triethoxysilyl)propyl]tetrasulfide (TESPT), were used as silica precursors simultaneously. TESPT was firstly used for both morphology control and inner surface functionalization of mesoporous silica hybrid materials. The microstructures as well as porous character of the MSNRs were characterized by means of SEM, XRD, TEM and N₂ sorption measurements. Infrared spectrum analysis and heavy metal ions (Ag⁺ and Cd²⁺) adsorption measurements were carried out to confirm the functionalized framework of MSNRs.

Keywords nanocomposite porous material morphology control inner surface functionalization sorbent

Corresponding Author(s): CAI Qiang,Email:caiqiang@mail.tsinghua.edu.cn

Issue Date: 05 September 2012

Cite this article:

Xi CHEN,Qiang CAI,Lin-Hao SUN, et al. Synthesis of novel thiol-functionalized mesoporous silica nanorods and their sorbent properties on heavy metals[J]. Front Mater Sci, 2012, 6(3): 278-282.

URL:

https://academic.hep.com.cn/foms/EN/10.1007/s11706-012-0174-4
https://academic.hep.com.cn/foms/EN/Y2012/V6/I3/278

Fig.1 The chemical structure and formula of TESPT. Scanning electron microscopy (SEM) images of rod-like morphology of MSNR and sphere-like morphology of MSNS.

Fig.2 TEM image of MSNRs. Inset: magnification image of the selected area.

Fig.3 Small-angle XRD pattern of MSNRs (samples obtained after the surfactant removed).

Fig.4 Nitrogen sorption isotherms of MSNRs. Inset: pore size distribution calculated from adsorption branch.

Fig.5 FT-IR spectra of MSNRs and MSNSs.

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