Chemical modification of silica-gel with diethylenetriamine via an end-group protection approach for adsorption to Hg(II)

被引：60

作者：

Zhang, Ying ^{[1
]}

Qu, Rongjun ^{[1
]}

Sun, Changmei ^{[1
]}

Wang, Chunhua ^{[1
]}

Ji, Chunnuan ^{[1
]}

Chen, Hou ^{[1
]}

Yin, Ping ^{[1
]}

机构：

[1] Ludong Univ, Sch Chem & Mat Sci, Yantai 264025, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2009年 / 255卷 / 11期

关键词：

Chemical modification of silica-gel; Diethylenetriamine; End-group protection; Adsorption; Hg(II); HEAVY-METAL IONS; SEPARATION; ETHYLENIMINE; DENDRIMER; NITROGEN; REMOVAL; CATIONS; SURFACE; ROUTES; AGENT;

D O I：

10.1016/j.apsusc.2009.01.011

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Four kinds of silica-gel supported diethylenetriamine adsorbents with different structures, were prepared by so-called "heterogeneous-direct-amination'' (hetero-DA), "homogeneous-direct-amination'' (homo-DA), "heterogeneous end-group protection'' (hetero-EGP), and "homogeneous end-group protection'' (homo-EGP) methods, respectively. The obtained products were named SG-HE-dD, SG-HO-dD, SG-HE-pD and SG-HO-pD, respectively (where SG means silica-gel; HE means heterogeneous, HO means homogeneous, d means direct, p means protected and D means diethylenetriamine). Their structures were characterized by FT-IR, elemental analysis, porous structure analysis and thermogravimetric analysis. The adsorption capabilities of such adsorbents towards Hg(II) were studied and evaluated by static method. SG-HE-pD and SG-HO-pD showed higher performance towards Hg(II) adsorption than corresponding counterparts SG-HE-dD and SG-HO-dD, even though the former two possessed lower contents of diethylenetriamine (DETA). The kinetics data indicated that the adsorption process was governed by the film diffusion and followed pseudo-first-order rate model for SG-HE-dD, SG-HO-dD and SG-HE-pD and pseudo-second-order model for SG-HO-pD. The Langmuir model was applied to fit the experimental equilibrium data for all adsorbents. The end-group protection method exhibited its advantage in preparation of effective adsorbent for metal ions uptake compared to the direct-amination method. (C) 2009 Elsevier B. V. All rights reserved.

引用

页码：5818 / 5826

页数：9

共 33 条

[11]

Helfferich F.G., 1995, Ion Exchange

[12] Pseudo-second order model for sorption processes [J].

Ho, YS ;

McKay, G .

PROCESS BIOCHEMISTRY, 1999, 34 (05) :451-465

[13] Chemical modification of silica surface by immobilization of functional groups for extractive concentration of metal ions [J].

Jal, PK ;

Patel, S ;

Mishra, B .

TALANTA, 2004, 62 (05) :1005-1028

[14] ADSORPTION OF METAL-IONS ON POLYAMINATED HIGHLY POROUS CHITOSAN CHELATING RESIN [J].

KAWAMURA, Y ;

MITSUHASHI, M ;

TANIBE, H ;

YOSHIDA, H .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1993, 32 (02) :386-391

[15] Highly selective and efficient recovery of Pd, Pt, and Rh from precious metal-containing industrial effluents with silica-based (poly)amine ion exchangers [J].

Kramer, J ;

Driessen, WL ;

Koch, KR ;

Reedijk, J .

SEPARATION SCIENCE AND TECHNOLOGY, 2004, 39 (01) :63-75

[16] Mesoporous silica functionalized with 2-mercaptopyridine:: Synthesis, characterization and employment for Hg(II) adsorption [J].

Pérez-Quintanilla, D ;

del Hierro, I ;

Fajardo, M ;

Sierra, I .

MICROPOROUS AND MESOPOROUS MATERIALS, 2006, 89 (1-3) :58-68

[17] Adsorption and separation of cations on silica gel chemically modified by homogeneous and heterogeneous routes with the ethylenimine anchored on thiol modified silica gel [J].

Prado, AGS ;

Arakaki, LNH ;

Airoldi, C .

GREEN CHEMISTRY, 2002, 4 (01) :42-46

[18] Preparation and metal-binding behaviour of chitosan functionalized by ester- and amino-terminated hyperbranched polyamidoamine polymers [J].

Qu, Rongjun ;

Sun, Changmei ;

Ji, Chunnuan ;

Wang, Chunhua ;

Chen, Hou ;

Niu, Yuzhong ;

Liang, Chengju ;

Song, Qiyi .

CARBOHYDRATE RESEARCH, 2008, 343 (02) :267-273

[19] Syntheses, characterization, and adsorption properties for metal ions of silica-gel functionalized by ester- and amino-terminated dendrimer-like polyamidoamine polymer [J].

Qu, Rongjun ;

Niu, Yuzhong ;

Sun, Changmei ;

Ji, Chunnuan ;

Wang, Chunhua ;

Cheng, Guoxiang .

MICROPOROUS AND MESOPOROUS MATERIALS, 2006, 97 (1-3) :58-65

[20] Purification of water by activated carbons from apricot stones, lignites and anthracite [J].

Razvigorova, M ;

Budinova, T ;

Petrov, N ;

Minkova, V .

WATER RESEARCH, 1998, 32 (07) :2135-2139

← 1 2 3 4 →