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摘要
气凝胶以轻质、多孔、隔热等特性成为太阳能界面蒸发的理想基体。以芳纶纳米纤维(ANFs)为基体,通过共混掺杂和原位生长方法,制备了ANF载纳米银/二硫化钼(AgNPs@ANF/MoS2)复合气凝胶。形貌、结构和性能分析结果表明:复合气凝胶为狭缝型多级孔结构,具有优异的压缩回弹性、低热导率[0.03W/(m·K)]和有效的光吸收(可见光区94.7%)。在5个太阳光照射下,表面温度最高可升温至67.5℃,蒸发速率高达13.9kg/(m2·h),具有非常优越的收集和转化太阳辐射的能力,同时验证了AgNPs@ANF/MoS2复合气凝胶拥有优异的染料废水净化能力。
Abstract
Aerogel is an ideal substrate for solar interface evaporation due to its light weight,porosity and thermal insulation properties.In this paper,aramid nanofiber loaded with silver nanoparticles/molybdenum disulfide (AgNPs@ANF/MoS2) composite aerogels were prepared by co-doping and in situ growth method using aramid nanofibers (ANFs) as substrate.The morphology,structure and properties of the composite aerogels were studied,and the results showed that the composite aerogels had a slit multilevel pore structure,excellent compression resilience,low thermal conductivity of 0.0297W/(m·K) and effective light absorption of 94.7% in visible region.The surface temperature could be heated up to 67.5℃ and the evaporation rate was up to 13.9kg/(m2·h) under five sunlight irradiations,which had a very superior ability to collect and transform solar radiation,and verified that the AgNPs@ANF/MoS2 composite aerogels possessed excellent dye wastewater purification ability.
关键词
界面蒸发
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气凝胶
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芳纶纳米纤维
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二硫化钼
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纳米银
Key words
interface evaporation
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aerogel
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aramid nanofibers
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MoS2
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silver nanoparticles
芳纶纳米纤维负载纳米银/二硫化钼复合气凝胶的制备及其光热性能研究[J].
化工新型材料, 2023, 51(5): 139-144 DOI:10.19817/j.cnki.issn1006-3536.2023.05.025
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基金资助
天津市自然科学基金项目(20JCQNJC00250);国家自然科学基金(51603148)
