超疏水多孔硅的制备及表面稳定性

doi:10.7503/cjcu20200079

高等学校化学学报 ›› 2020, Vol. 41 ›› Issue (7): 1499.doi: 10.7503/cjcu20200079

• 研究论文: 无机化学 • 上一篇下一篇

超疏水多孔硅的制备及表面稳定性

苗笑梅,毛克羽,裴勇兵,蒋剑雄,颜悦^*(),吴连斌^*()

杭州师范大学有机硅化学及材料技术教育部重点实验室, 杭州 311121

收稿日期:2020-02-17 出版日期:2020-07-10 发布日期:2020-04-28
通讯作者: 颜悦,吴连斌 E-mail:maesyan@163.com;wulianbin@hznu.edu.cn
基金资助:
高等学校国内访问学者专业发展项目(FX2017054);留学回国人员(团队)在杭州创业创新项目

Preparation of Superhydrophobic Porous Silicon and Its Surface Stability^†

MIAO Xiaomei,MAO Keyu,PEI Yongbing,JIANG Jianxiong,YAN Yue^*(),WU Lianbin^*()

Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China

Received:2020-02-17 Online:2020-07-10 Published:2020-04-28
Contact: Yue YAN,Lianbin WU E-mail:maesyan@163.com;wulianbin@hznu.edu.cn
Supported by:
† Professional Development Program for Domestic Visiting Scholars in Colleges and Universities, China(FX2017054);Returnees(teams) Studying Abroad in Hangzhou Start Business Innovation Projects, China

摘要/Abstract

摘要：

在加热条件下采用氢化硅烷化反应对多孔硅表面进行改性, 通过扫描电子显微镜、红外光谱及元素分析等手段表征了多孔硅改性前后的结构和组成, 研究了不同反应时间对其性能的影响. 结果表明, 反应3 h后制得了超疏水表面的多孔硅, 其在碱性及空气环境中具有良好的稳定性.

关键词: 多孔硅, 超疏水, 稳定性

Abstract:

The porous silicon has been widely used in many fields due to its great optical properties, but the silicon hydride bonds(Si—H) on the surface of porous silicon were sensitive to the water and oxygen, which will affect the performance of porous silicon. Therefore, it was critically necessary to improve the porous silicon stability by the surface modification. In this article, the surface modification of porous silicon was processed by the hydrosilylation method under the heating conditions. The structure and composition of the functionality porous silicon were characterized and tested by Fourier transform infrared spectroscopy, energy dispersive spectrometer, scanning electron microscopy. The effect of different reaction time on grafting porous silicon was investigated. The results show that the superhydrophobic porous silicon was prepared after 3 h reaction, and it exhibited great stability in the alkaline and air environment.

Key words: Porous silicon, Superhydrophobic, Stabilization

中图分类号:

O613.7
TB383

TrendMD:

苗笑梅, 毛克羽, 裴勇兵, 蒋剑雄, 颜悦, 吴连斌. 超疏水多孔硅的制备及表面稳定性. 高等学校化学学报, 2020, 41(7): 1499.

MIAO Xiaomei, MAO Keyu, PEI Yongbing, JIANG Jianxiong, YAN Yue, WU Lianbin. Preparation of Superhydrophobic Porous Silicon and Its Surface Stability^†. Chem. J. Chinese Universities, 2020, 41(7): 1499.

图/表 6

Fig.1 SEM images of plan-view(A) and cross-sectional(B) of pure porous silicon, photoluminescence intensity of pure porous silicon(C) Inset of (C): macroscopic morphology of porous silicon surface under the white light and UV light.

Fig.2 FTIR spectra of pure porous silicon(a) and F-pSiC(b)

Fig.3 Plan-view(A1—C1) and cross-sectional(A2—C2) SEM images and EDS spectra(A3—C3) of porous silicon, before(A1—A3) after grafting dodecafluoroheptyl methacrylate(B1—B3) and functionalized porous silicon after treatment with HF solution(C1—C3)

Fig.4 Effect of reaction time on water contact angle of porous silicon(A), photoluminescence intensity and water contact angle of grafted porous silicon(B), surface stability test of pure(C) and F-pSiC(D)

Fig.5 Alkaline stability test on water contact angle(A) and photoluminescence intensity(B) before and after KOH treatment

Fig.6 Oxidation stability test during one week on photoluminescence intensity(A) and water contact angle(B) of F-pSiC(a) and pure(b)

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超疏水多孔硅的制备及表面稳定性

Preparation of Superhydrophobic Porous Silicon and Its Surface Stability^†

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超疏水多孔硅的制备及表面稳定性

Preparation of Superhydrophobic Porous Silicon and Its Surface Stability†

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Preparation of Superhydrophobic Porous Silicon and Its Surface Stability^†