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首页> 外文期刊>Separation and Purification Technology >One-pot composite synthesis of three-dimensional graphene oxide/poly (vinyl alcohol)/TiO2 microspheres for organic dye removal
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One-pot composite synthesis of three-dimensional graphene oxide/poly (vinyl alcohol)/TiO2 microspheres for organic dye removal

机译：三维石墨烯氧化物/聚（乙烯醇）/ TiO2微球的单罐复合合成用于有机染料去除

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摘要

Three-dimensional graphene oxide (3D-GO), poly(vinyl alcohol) (PVA), and TiO2 microspheres (3D-GO/PVA/TiO2) composite was prepared via one-pot synthesis by using aqueous suspension of PVA and 3D-GO sheets as support in the presence of TiO2 microspheres. Photocatalytic activity of 3D-GO/PVA/TiO2 toward dyes was enhanced by the improved adsorption performance caused by the rich pi-conjugation structure of GO and porous 3D-GO/PVA sheets. Methylene blue (MB) and methyl violet (MV) were adsorbed onto the resultant composite in dark for 30 min and irradiated under simulated solar light for 2 h. Degradation ratios of MB and MV were approximately 95% and 96%, respectively. Results from the evaluation of repeatability toward MB and MV degradation showed that the 3D-GO/PVAITiO(2) composite were stable and reusable. Therefore, this novel composite may be applied in the treatment of wastewater polluted by dyes and in environmental cleaning. (C) 2016 Elsevier B.V. All rights reserved.
机译：通过使用PVA和3D-Go的水性悬浮液，通过单罐合成制备三维石墨烯氧化物（3D-GO），聚（乙烯醇）（PVA）和TiO 2微球（3D-Go / PVA / TiO2）复合材料 在TiO2微球存在下的纸张作为载体。 通过通过GO和多孔3D-GO / PVA片材的丰富的PI缀合结构引起的改善的吸附性能，增强了3D-GO / PVA / TiO2朝向染料的光催化活性。 将亚甲基蓝（MB）和甲基紫（MV）在暗中吸附到所得复合材料上30分钟并在模拟的太阳灯下照射2小时。 Mb和Mv的降解比分别为约95％和96％。 评估MB和MV降解的可重复性评价结果表明，3D-GO / PVAITIO（2）复合材料稳定可重复使用。 因此，该新型复合材料可用于处理染料和环境清洁污染的废水。 （c）2016年Elsevier B.v.保留所有权利。

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