富含玻璃纤维的光催化石膏灰泥自清洁性能的改善
Improved Self-Cleaning Properties of Photocatalytic Gypsum Plaster Enriched with Glass Fiber.
作者信息
Zając Kamila, Janus Magdalena, Morawski Antoni W
机构信息
Faculty of Civil Engineering and Architecture, West Pomeranian University of Technology, 70-311 Szczecin, Poland.
Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, 70-310 Szczecin, Poland.
出版信息
Materials (Basel). 2019 Jan 24;12(3):357. doi: 10.3390/ma12030357.
In the study the self-cleaning properties of photoactive gypsum plasters are presented. The modified gypsum plasters were obtained by addition of 1 and 3 wt.% of nitrogen-modified titanium dioxide (TiO₂/N) and 0.1, 0.3, and 0.5 wt.% of glass fiber. The self-cleaning ability of the obtained materials was tested during two dyes decomposition: Methylene Blue (MB) and Reactive Orange (RO). It was found that presence of glass fiber increased photocatalytic activity of modified gypsum plasters, which may be due to the fact glass fiber may act as ducts for light and transport it to sites screened by TiO₂ or glass fiber can retard charge recombination. Moreover, unexpectedly the addition of glass fiber did not increase the mechanical properties of modified gypsum plasters, which may be because gypsum does not strongly adhere to the surface of glass fibers.
本研究展示了光活性石膏灰泥的自清洁性能。通过添加1 wt.%和3 wt.%的氮改性二氧化钛（TiO₂/N）以及0.1 wt.%、0.3 wt.%和0.5 wt.%的玻璃纤维来制备改性石膏灰泥。在两种染料分解过程中测试了所得材料的自清洁能力，这两种染料分别是亚甲基蓝（MB）和活性橙（RO）。研究发现，玻璃纤维的存在提高了改性石膏灰泥的光催化活性，这可能是因为玻璃纤维可作为光的导管并将其传输到被TiO₂屏蔽的部位，或者玻璃纤维可以抑制电荷复合。此外，出乎意料的是，玻璃纤维的添加并未提高改性石膏灰泥的机械性能，这可能是因为石膏与玻璃纤维表面的附着力不强。
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