双球状双亲纳米SiO2粒子的合成

doi:10.7503/cjcu20170849

高等学校化学学报 ›› 2018, Vol. 39 ›› Issue (10): 2170.doi: 10.7503/cjcu20170849

双球状双亲纳米SiO₂粒子的合成

罗健辉^1,², 杨洁³, 李远洋³, 贺利鹏^1,², 江波³()

1. 中国石油天然气股份有限公司勘探开发研究院, 北京 100083
2. 中国石油天然气集团公司纳米化学重点实验室, 北京 100083
3. 四川大学化学学院, 绿色化学与技术教育部重点实验室, 成都 610064

收稿日期:2017-12-27 出版日期:2018-09-14 发布日期:2018-06-04
作者简介:
联系人简介: 江波, 男, 博士, 教授, 博士生导师, 主要从事功能高分子研究. E-mail: jiangbo@scu.edu.cn
基金资助:
中国石油天然气股份有限公司科学研究与技术开发项目(批准号: 2014A-1001)资助.

Synthesis of Amphiphilic Silica Nanoparticles with Double-sphere Morphology^†

LUO Jianhui^1,², YANG Jie³, LI Yuanyang³, HE Lipeng^1,², JIANG Bo^3,^*()

1. Research Institute of Petroleum Exploration & Development(RIPED), PetroChina, Beijing 100083, China;
2. Key Laboratory of Nano Chemistry(KLNC), Petro China, Beijing 100083, China
3. Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China;

Received:2017-12-27 Online:2018-09-14 Published:2018-06-04
Contact: JIANG Bo E-mail:jiangbo@scu.edu.cn
Supported by:
† Supported by the China National Petroleum & Gas Corporation Science and Technology Development Project(No. 2014A?1001).

摘要/Abstract

摘要：

以纳米SiO₂粒子为原料, 六甲基二硅氮杂烷(HMDS)和γ-缩水甘油醚氧丙基三甲氧基硅烷(KH560)分别作为亲油改性剂和亲水改性剂, 采用溶胶-凝胶法制备了亲油和亲水纳米SiO₂粒子. 通过亲油SiO₂和亲水SiO₂粒子表面化学键的偶合, 将亲油粒子和亲水粒子偶联, 制备了粒径为30 nm的双球状双亲纳米SiO₂粒子. 以双球状双亲纳米SiO₂粒子作为稳定剂, 制备了环己烷/水Pickering乳液, 证明了双球状纳米SiO₂粒子具有较好的双亲性能.

关键词: 双亲纳米二氧化硅粒子, 溶胶-凝胶法, Pickering乳液

Abstract:

Amphiphilic silica nanoparticles with double-sphere morphology were fabricated via the assembly of hydrophobic silica nanoparticles and hydrophilic nanoparticles through chemical interaction. Silica nanopartilces prepared by the sol-gel method were modified by hexamethyldisilazane(HMDS) and 3-glycidoxy-propyltrimethoxysilane(KH560) to obtain hydrophobic silica nanoparticles and hydrophilic silica nanoparticles respectively, which were then further linked together by the chemical bond on the surface of nanoparticles. The as-prepared amphiphilic silica nanoparticles with double-sphere morphology can stabilize the cyclohexane in water Pickering emulsion, indicating the good amphiphilic property of amphiphilic silica nanoparticles with double-sphere morphology.

Key words: Amphiphilic silica nanoparticles, Sol-gel method, Pickering emulsion

TrendMD:

罗健辉, 杨洁, 李远洋, 贺利鹏, 江波. 双球状双亲纳米SiO₂粒子的合成. 高等学校化学学报, 2018, 39(10): 2170.

LUO Jianhui,YANG Jie,LI Yuanyang,HE Lipeng,JIANG Bo. Synthesis of Amphiphilic Silica Nanoparticles with Double-sphere Morphology^†. Chem. J. Chinese Universities, 2018, 39(10): 2170.

图/表 11

Fig.1 Particle size distribution curves of SiO2 nanoparticles(A), HMDS modified hydrophobic SiO2 nanoparticles(B), KH560 modified hydrophilic SiO2 nanoparticles(C) and amphiphilic SiO2 nanoparticles(D)

Fig.2 FTIR spectra of SiO2 nanoparticles(a), HMDS modified hydrophobic SiO2 nanoparticles(b) and KH560 modified hydrophilic SiO2 nanoparticles(c)

Fig.3 Solid-state 13C CPMAS NMR spectra of SiO2 nanoparticles(a), HMDS modified hydrophobic SiO2 nanoparticles(b), KH560 modified hydrophilic SiO2 nanoparticles(c) and amphiphilic SiO2 nanoparticles(d)

Fig.4 Water contact angle(A—D) and oil contact angle(E—H) of 25HMDS(A, E), 50HMDS(B, F),75HMDS(C, G) and 100HMDS(D, H)

Fig.5 Schematic illustration of hydrophilic modification of SiO2 nanoparticles by KH560

Fig.6 Water contact angles of 25KH560(A), 50KH560(B), 75KH560(C) and 100KH560(D)

Fig.7 Schematic illustration of the preparation process of amphiphilic silica nanoparticles with double-sphere morphology

Fig.8 XPS fine spectra of hydrophilic silica nanoparticles(A, B) and amphiphilic silica nanoparticles(C—E)(A, C) C1s; (B, D) O1s; (E) N1s.

Table 1 Particle size of amphiphilic silica nanoparticles with double-sphere morphology

Sample	Particle size/nm	Sample	Particle size/nm
25HMDS-NH₂-25KH560	25.98	75HMDS-NH₂-25KH560	26.47
25HMDS-NH₂-50KH560	31.48	75HMDS-NH₂-50KH560	26.99
25HMDS-NH₂-75KH560	29.55	75HMDS-NH₂-75KH560	29.81
25HMDS-NH₂-100KH560	31.49	75HMDS-NH₂-100KH560	33.48
50HMDS-NH₂-25KH560	23.76	100HMDS-NH₂-25KH560	25.80
50HMDS-NH₂-50KH560	29.51	100HMDS-NH₂-50KH560	28.66
50HMDS-NH₂-75KH560	27.43	100HMDS-NH₂-75KH560	31.75
50HMDS-NH₂-100KH560	30.31	100HMDS-NH₂-100KH560	28.22

Fig.9 Zeta potential of 75HMDS-NH2, 25KH560,75HMDS-NH2-25KH560

Fig.10 Photographs of cyclohexane-water emulsions stabilized by 75HMDS-NH2-25KH560(a),75HMDS(b), 25KH560(c) and 75HMDS-25KH560(d)

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双球状双亲纳米SiO₂粒子的合成

Synthesis of Amphiphilic Silica Nanoparticles with Double-sphere Morphology^†

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