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

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

Abstract 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...

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Main Authors: Shahid Khan, Kangkai Wang, Guangzhong Yuan, Mahmood ul Haq, Zhizheng Wu, Muhammad Usman, Chenlu Song, Gaorong Han, Yong Liu
Format: Article
Language:English
Published: Nature Publishing Group 2017-07-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-017-05506-7
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spelling doaj-4797aef1f47a4486903ab41df6e23afb2020-12-08T02:08:35ZengNature Publishing GroupScientific Reports2045-23222017-07-017111210.1038/s41598-017-05506-7Marangoni effect induced macro porous surface films prepared through a facile sol-gel routeShahid Khan0Kangkai Wang1Guangzhong Yuan2Mahmood ul Haq3Zhizheng Wu4Muhammad Usman5Chenlu Song6Gaorong Han7Yong Liu8State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang UniversityState Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang UniversityState Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang UniversityState Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang UniversityState Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang UniversityExperimental Physics Laboratories, National Centre for Physics, Shahdara Valley Road, Quaid-i-Azam UniversityState Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang UniversityState Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang UniversityState Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang UniversityAbstract 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.https://doi.org/10.1038/s41598-017-05506-7
collection DOAJ
language English
format Article
sources DOAJ
author Shahid Khan
Kangkai Wang
Guangzhong Yuan
Mahmood ul Haq
Zhizheng Wu
Muhammad Usman
Chenlu Song
Gaorong Han
Yong Liu
spellingShingle Shahid Khan
Kangkai Wang
Guangzhong Yuan
Mahmood ul Haq
Zhizheng Wu
Muhammad Usman
Chenlu Song
Gaorong Han
Yong Liu
Marangoni effect induced macro porous surface films prepared through a facile sol-gel route
Scientific Reports
author_facet Shahid Khan
Kangkai Wang
Guangzhong Yuan
Mahmood ul Haq
Zhizheng Wu
Muhammad Usman
Chenlu Song
Gaorong Han
Yong Liu
author_sort Shahid Khan
title Marangoni effect induced macro porous surface films prepared through a facile sol-gel route
title_short Marangoni effect induced macro porous surface films prepared through a facile sol-gel route
title_full Marangoni effect induced macro porous surface films prepared through a facile sol-gel route
title_fullStr Marangoni effect induced macro porous surface films prepared through a facile sol-gel route
title_full_unstemmed Marangoni effect induced macro porous surface films prepared through a facile sol-gel route
title_sort marangoni effect induced macro porous surface films prepared through a facile sol-gel route
publisher Nature Publishing Group
series Scientific Reports
issn 2045-2322
publishDate 2017-07-01
description Abstract 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.
url https://doi.org/10.1038/s41598-017-05506-7
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