Senthilnathan Anoja, Dissanayake D M S N, Chandrakumara G T D, Mantilaka M M M G P G, Rajapakse R M G, Pitawala H M T G A, Nalin de Silva K M
Academy of Sri Lanka Institute of Nanotechnology (SLINTEC Academy), Mahenwatte, Pitipana, Homagama 10206, Sri Lanka.
Sri Lanka Institute of Nanotechnology (SLINTEC), Nanotechnology and Science Park, Mahenwatte, Pitipana, Homagama 10206, Sri Lanka.
R Soc Open Sci. 2019 Mar 27;6(3):182212. doi: 10.1098/rsos.182212. eCollection 2019 Mar.
Thin films of akaganeite [FeO(OH)] nanorices deposited muscovite mica (ANPM) surfaces are synthesized using the facile urea assisted controlled self-assembly technique. The synthesized materials are characterized using scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy, atomic force microscopy, X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy and thermogravimetric analysis (TGA). The prepared nanorices on mica surfaces show average particle length and width of 200 and 50 nm, respectively. Synthesized material acts as an efficient photocatalyst under UV and sunlight conditions as demonstrated by the degradation of standard methylene blue (MB) solution. The MB degradation efficiencies of the catalyst under exposure to 180 min sunlight and UV are 89% and 87.5%, respectively, which shows that the catalyst is more highly active under sunlight than under UV light. Therefore, the synthesized material is a potential green photocatalyst in efficient treatment of industrial dye effluents under direct sunlight.
采用简便的尿素辅助控制自组装技术,在白云母表面合成了赤铁矿型氢氧化铁纳米棒薄膜(ANPM)。使用带有能量色散X射线光谱的扫描电子显微镜(SEM)、原子力显微镜、X射线衍射(XRD)、傅里叶变换红外(FT-IR)光谱和热重分析(TGA)对合成材料进行表征。云母表面制备的纳米棒平均粒径长度和宽度分别为200和50nm。如标准亚甲基蓝(MB)溶液的降解所示,合成材料在紫外线和阳光条件下可作为高效光催化剂。在180分钟阳光和紫外线照射下,催化剂对MB的降解效率分别为89%和87.5%,这表明催化剂在阳光下比在紫外线下具有更高的活性。因此,合成材料是一种在阳光直射下高效处理工业染料废水的潜在绿色光催化剂。