Facile fabrication of ultra-low density, high-surface-area, broadband antireflective carbon aerogels as ultra-black materials

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• 作者：Jiayi Zhu ; Xi Yang ; Zhibing Fu ; Chaoyang Wang ; Weidong Wu…
• 关键词：Carbon aerogels ; Self ; assembly ; Low ; density ; Broadband antireflective ; Ultra ; black materials
• 刊名：Journal of Porous Materials
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：23
• 期：5
• 页码：1217-1225
• 全文大小：1,265 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Catalysis
  Characterization and Evaluation Materials
  Physical Chemistry
  
• 出版者：Springer Netherlands
• ISSN：1573-4854
• 卷排序：23

文摘

Carbon aerogels with various densities, even as low as 20 mg/cm3, were fabricated by pyrolysis of organic aerogels formed by aqueous condensation of resorcinol and formaldehyde. It was found that carbon aerogels with the density below 70 mg/cm3 exhibited the total reflectance values of typically less than 0.24 % across wavelengths in the range of 400–2000 nm. The change of antireflective properties between the lowest-density carbon aerogel monolith and its powder coating was discussed. Furthermore, we studied the effect of the density on the structure and antireflective property of carbon aerogels. As a result, the low-density carbon aerogels showed broadband low-reflectivity and high absorption to incident light.