Mechanically Robust and Flame-Retardant Silicon Aerogel Elastomers for Thermal Insulation and Efficient Solar Steam Generation
Liu, Chao; Wu, Shujuan; Yang, Zifeng; Sun, Hanxue; Zhu, Zhaoqi; Liang, Weidong; Li, An
2020-04-21
Source PublicationACS OMEGA
ISSN2470-1343
Volume5Issue:15Pages:8638-8646
AbstractIn this work, we report the synthesis of silicon aerogel elastomers (SAEs) by one-pot hydrolytic condensation of silanes, followed by drying at room temperature. The as-synthesized SAE features excellent flexibility and mechanical robustness, for example, a high compressive strength of up to 40 kPa at 75% strain was achieved. Combined with their thermal insulation properties (a low thermal conductivity of ca. 0.02 W m(-1) K-1 in air), for the first time, such SAEs were used as a porous platform for both flame-retardant measurement and solar steam generation. By coating with Mg(OH)(2) via a facile coprecipitation method, the treated SAEs show excellent flame retardancy with a peak heat release rate of 25.61 kW m(-2), in addition to high fire resistance and excellent smoke suppression. When used as a solar steam generator, their evaporation efficiency was measured to be 82.7% (1 kW m(-2)), which could compete with that of other high-performance bilayered photothermal materials reported so far. Taking advantage of their simple and cost-efficient manufacture and superior mechanical robustness and flexibility, such SAEs with multifunctionalities may have great potential for a wide variety of energy-saving applications, for example, especially for thermal insulation coatings with better flame retardancy and efficient solar steam generation for desalination or freshwater production.
DOI10.1021/acsomega.0c00086
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[21975113][51962018][51663012] ; Project of Collaborative Innovation Team, Gansu Province, China[052005] ; Innovation and Entrepreneurship Talent Project of Lanzhou[2017-RC-33]
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000527748400059
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/64244
Collection石油化工学院
Corresponding AuthorLi, An
AffiliationLanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Peoples R China
First Author AffilicationColl Petrochem Engn
Corresponding Author AffilicationColl Petrochem Engn
First Signature AffilicationColl Petrochem Engn
Recommended Citation
GB/T 7714
Liu, Chao,Wu, Shujuan,Yang, Zifeng,et al. Mechanically Robust and Flame-Retardant Silicon Aerogel Elastomers for Thermal Insulation and Efficient Solar Steam Generation[J]. ACS OMEGA,2020,5(15):8638-8646.
APA Liu, Chao.,Wu, Shujuan.,Yang, Zifeng.,Sun, Hanxue.,Zhu, Zhaoqi.,...&Li, An.(2020).Mechanically Robust and Flame-Retardant Silicon Aerogel Elastomers for Thermal Insulation and Efficient Solar Steam Generation.ACS OMEGA,5(15),8638-8646.
MLA Liu, Chao,et al."Mechanically Robust and Flame-Retardant Silicon Aerogel Elastomers for Thermal Insulation and Efficient Solar Steam Generation".ACS OMEGA 5.15(2020):8638-8646.
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