超疏水金红石型纳米钛硅复合氧化物的制备与表征

doi:10.11949/j.issn.0438-1157.20160782

化工学报 ›› 2017, Vol. 68 ›› Issue (1): 444-451.DOI: 10.11949/j.issn.0438-1157.20160782

• 材料化学工程与纳米技术 • 上一篇下一篇

超疏水金红石型纳米钛硅复合氧化物的制备与表征

侯磊鑫¹, 方莉¹, 闫光红², 王永康²

1 山西大学化学化工学院, 山西太原 030006;
2 山西亮龙涂料有限公司, 山西晋中 030600

收稿日期:2016-06-06 修回日期:2016-10-03 出版日期:2017-01-05 发布日期:2017-01-05
通讯作者: 方莉
基金资助:
国家科技支撑计划项目（2013BAC14B05）；山西省自然科学基金重点项目（2014011003-1）；山西省科技创新项目（2014101011）。

Preparation and characterization of superhydrophobic rutile titania-silica nano complex oxides

HOU Leixin¹, FANG Li¹, YAN Guanghong², WANG Yongkang²

1 School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, Shanxi, China;
2 Shanxi Laslon Coating Company Limited, Jinzhong 030600, Shanxi, China

Received:2016-06-06 Revised:2016-10-03 Online:2017-01-05 Published:2017-01-05
Contact: 10.11949/j.issn.0438-1157.20160782
Supported by:
supported by the National Key Technology Research and Development Program of the Ministry of Science and Technology of China (2013BAC14B05), the Key Project of the Natural Science Foundation of Shanxi Province (2014011003-1) and the Science and Technology Innovation Project of Shanxi Province (2014101011).

摘要/Abstract

摘要：

以正硅酸乙酯为硅源、钛酸异丙酯为钛源，采用改进的溶胶-凝胶法制备了不同钛硅摩尔比的复合气凝胶，在不同温度下进行煅烧，得到金红石型钛硅（TiO₂-SiO₂）复合氧化物纳米颗粒，然后通过三甲基氯硅烷（TMCS）改性，制得超疏水金红石型TiO₂-SiO₂纳米材料。探讨了钛硅摩尔比和煅烧温度对钛硅复合氧化物纳米颗粒晶型的影响，并通过XRD、XPS、BET、SEM和FTIR等手段对产物进行了表征，采用水接触角测试（WCA）对纳米材料改性后的疏水性能进行了表征。结果表明：当钛硅摩尔比为5：1时制得的气凝胶在1100℃煅烧及TMCS改性后，所制备的超疏水金红石型纳米钛硅复合氧化物的比表面积大，疏水性能优异，其比表面积达348 m²·g^-1，水接触角达到154.7°，在构建具有纳微分层结构的外墙装饰材料的面漆方面具有潜在的应用前景。

关键词: 超疏水, 溶胶-凝胶法, 钛硅复合氧化物, 纳米粒子, 制备, 烧结, 金红石型

Abstract:

Superhydrophobic titania-silica nano complex oxides were synthesized from tetraethylorthosilicate(TEOS) and titanium isopropoxide(TTIP) by an improved sol-gel method followed with high temperature calcination and modification with trimethylchlorosilane(TMCS).The obtained nano complex oxides were characterized by XRD, XPS, BET, SEM and FTIR, and water contact angle.Crystal polymorphism of the nano complex oxides was investigated to explore influence of titania-silica molar ratio as well as calcination temperature on crystal structure.The results showed that rutile crystal structure was achieved at titania-silica molar ratio of 5:1 and calcination temperature of 1100℃.After TCMS surface modification, the superhydrophobic rutile TiO₂-SiO₂ nano complex oxides exhibited large specific surface area(up to 348 m²·g^-1) and excellent hydrophobicity(water contact angle of 154.7°), which could have a potential application for constructing micro-nano hierarchy-structured top coating of outside wall-decorating materials.

Key words: superhydrophobicity, sol-gel, titania-silica complex oxides, nanoparticles, preparation, sintering, rutile

中图分类号:

O648

侯磊鑫, 方莉, 闫光红, 王永康. 超疏水金红石型纳米钛硅复合氧化物的制备与表征[J]. 化工学报, 2017, 68(1): 444-451.

HOU Leixin, FANG Li, YAN Guanghong, WANG Yongkang. Preparation and characterization of superhydrophobic rutile titania-silica nano complex oxides[J]. CIESC Journal, 2017, 68(1): 444-451.

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超疏水金红石型纳米钛硅复合氧化物的制备与表征

Preparation and characterization of superhydrophobic rutile titania-silica nano complex oxides

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