|本期目录/Table of Contents|

[1]王昌松,钱沙沙,陆小华.改性TiO2粉体的亲/疏水性及其对甲基橙的吸附[J].南京工业大学学报(自然科学版),2014,36(03):22-25.[doi:10.3969/j.issn.1671-7627.2014.03.005]
 WANG Changsong,QIAN Shasha,LU Xiaohua.Hydrophilicity/hydrophobicity of modified TiO2 powder and adsorption of methyl orange[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2014,36(03):22-25.[doi:10.3969/j.issn.1671-7627.2014.03.005]
点击复制

改性TiO2粉体的亲/疏水性及其对甲基橙的吸附()
分享到:

《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
36
期数:
2014年03期
页码:
22-25
栏目:
出版日期:
2014-05-20

文章信息/Info

Title:
Hydrophilicity/hydrophobicity of modified TiO2 powder and adsorption of methyl orange
文章编号:
1671-7627(2014)03-0022-04
作者:
王昌松钱沙沙陆小华
南京工业大学 化学化工学院 材料化学工程国家重点实验室,江苏 南京 210009
Author(s):
WANG ChangsongQIAN ShashaLU Xiaohua
State Key Laboratory of Materials-Oriented Chemical Engineering,College of Chemistry and Chemical Engineering,Nanjing Tech University,Nanjing 210009,China
关键词:
TiO2 亲/疏水性 化学非均一表面 吸附
Keywords:
TiO2 hydrophilicity/hydrophobicity heterogeneous surfaces adsorption
分类号:
O647.5
DOI:
10.3969/j.issn.1671-7627.2014.03.005
文献标志码:
A
摘要:
以十八烷基三氯硅烷(OTS)自组装改性TiO2,获得具有化学非均一的表面。采用傅里叶红外光谱仪(FT-IR)、热分析仪(TGA)和静态接触角(CA)测量仪对样品进行表征; 采用分光光度计分析样品吸附甲基橙溶液的浓度变化。结果表明:随着OTS覆盖率的增加,TiO2粉体的疏水性增加; 在8% OTS覆盖率下,TiO2粉体从完全亲水性转为疏水性。这种具有化学非均一表面的TiO2粉体对低浓度(<30 mg/L)甲基橙溶液具有高的吸附量和吸附速率; 而未改性TiO2粉体在低浓度下几乎不能吸附。
Abstract:
Heterogeneous surfaces were achieved by octadecyltrichlorosilane(OTS)modified TiO2 powder.The samples were characterized by Fourier transform infrared spectroscopy(FT-IR),thermal gravity analysis(TGA)and static contact angle(CA)measurement.And the concentrations of methyl orange solutions were measured by spectrophotometer.Results showed that hydrophobicity of TiO2 powder could be enhanced with the increasing of OTS coverage,and the hydrophilic surfaces could be changed to hydrophobic at 8% OTS coverage.On low concentrations(at 30 mg/L)of methyl orange,the TiO2 powder with heterogeneous surfaces had high adsorption capacity and adsorption rate,however the unmodified TiO2 powder had no effect.

参考文献/References:

[1] Wang R,Hashimoto K,Fujishima A,et al.Light-induced amphiphilic surfaces[J].Nature,1997,388:431-432.
[2] Minero C,Catozzo F,Pelizzetti E.Role of adsorption in photocatalyzed reactions of organic molecules in aqueous titania suspensions[J].Langmuir,1992,8(2):481-486.
[3] Chen F,Zhao J C,Hidaka H.Adsorption factor and photocatalytic degradation of dye-constituent aromatics on the surface of TiO2 in the presence of phosphate anions[J].Research on Chemical Intermediates,2003,29(7/8/9):733-748.
[4] Xu Y M,Langford C H.UV-or visible-light-induced degradation of X3B on TiO2 nanoparticles:the influence of adsorption[J].Langmuir,2001,17(3):897-902.
[5] Wang Rongwei,Wunder S L.Effects of silanol density,distribution,and hydration state of fumed silica on the formation of self-assembled monolayers of n-octadecyltrichlorosilane[J].Langmuir,2000,16(11):5008-5016.
[6] Helmy R,Fadeev A Y.Self-assembled monolayers supported on TiO2:comparison of C18H37SiX3(X=H,Cl,OCH3),C18H37Si(CH3)2Cl and C18H37PO(OH2)[J].Langmuir,2002,18(23):8924-8928.
[7] Benitez J J,Kopta S,Ogletree D F,et al.Preparation and characterization of self-assembled monolayers of octadecylamine on mica using hydrophobic solvents[J].Langmuir,2002,18(16):6096-6100.
[8] Sung M M,Carraro C,Yauw O W,et al.Reversible liquid-liquid transitions in the early stages of monolayer self-assembly[J].Journal of Physical Chemistry B,2000,104(7):1556-1559.
[9] Lee J P,Kim H K,Park C R,et al.Photocatalytic decomposition of alkylsiloxane self-assembled monolayers on titanium oxide surfaces [J].Journal of Physical Chemistry B,2003,107(34):8997-9002.

相似文献/References:

[1]李凯,林陵,王继元,等.压缩成型法制备TiO2成型载体[J].南京工业大学学报(自然科学版),2010,32(03):49.
 LI Kai,LIN Ling,WANG Jiyuan,et al.Preparation of formed TiO2 supports by compression method[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2010,32(03):49.
[2]卢军,范益群,徐南平.有机添加剂对TiO2/Ti复合微滤膜制膜液性质和成膜的影响[J].南京工业大学学报(自然科学版),2012,34(03):56.[doi:10.3969/j.issn.1671-7627.2012.03.011]
 LU Jun,FAN Yiqun,XU Nanping.Effects of organic additives on suspension and formation of TiO2/Ti composite microfiltration membrane[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2012,34(03):56.[doi:10.3969/j.issn.1671-7627.2012.03.011]

备注/Memo

备注/Memo:
收稿日期:2013-05-13
基金项目:国家重点基础研究发展计划(973计划)(2013CB733503)
作者简介:王昌松(1975—),男,江苏南通人,副研究员,博士,主要研究方向为界面化学,E-mail:wcs@njtech.edu.cn..
更新日期/Last Update: 2014-05-20