Marangoni effect induced macro porous surface films prepared through a facile sol-gel route

被引：4

作者：

Khan, Shahid ^{[1
,2
]}

Wang, Kangkai ^{[1
,2
]}

Yuan, Guangzhong ^{[1
,2
]}

ul Haq, Mahmood ^{[1
,2
]}

Wu, Zhizheng ^{[1
,2
]}

Usman, Muhammad ^{[4
]}

Song, Chenlu ^{[1
,2
,3
]}

Han, Gaorong ^{[1
,2
,3
]}

Liu, Yong ^{[1
,2
,3
]}

机构：

[1] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China

[2] Zhejiang Univ, Sch Mat Sci & Engn, Hangzhou 310027, Peoples R China

[3] Key Lab Adv Mat & Applicat Batteries Zhejiang Pro, Hangzhou, Zhejiang, Peoples R China

[4] Quaid I Azam Univ, Expt Phys Labs, Natl Ctr Phys, Shahdara Valley Rd, Islamabad, Pakistan

来源：

SCIENTIFIC REPORTS | 2017年 / 7卷

基金：

中国国家自然科学基金;

关键词：

DIP-COATING METHOD; PHASE-SEPARATION; TITANIA FILMS; THIN-FILMS; TIO2; TEMPERATURE; SYSTEM;

D O I：

10.1038/s41598-017-05506-7

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Based on TiO2 as a model system, the sol-gel one step facile method is established to fabricate the macro-porous morphology films on the basis of Marangoni effect. In this proposed mechanism, the binary mixture of hydrophilic CuCl2 and lipophilic Ti-O network is used in sol to produce phase separation. A suitable evaporation rate in the gel film process leads to the macro-porous film due to Marangoni effect. It is observed that the macro-porous morphology of the film sustains during the annealing process, which suggests the creation of porous surface morphology in gel film stage rather than due to annealing. To analyze the preparation mechanism, the sol-gel process and microstructure of films are examined using TG-DTA, SEM, TEM, XRD, Raman, UV-Vis, XPS and FTIR. Furthermore, the optical-thermal properties are studied for the potential applications of such porous surface films as solar selective absorber.

引用

页数：12

共 33 条

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