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Treatment of Methylene Blue and Methyl Orange Dyes in Wastewater by Grafted Titania Pillared Clay Membranes.
Recent Patents on Nanotechnology ( IF 2 ) Pub Date : 2018-10-30 , DOI: 10.2174/1872210512666181029155352
Nalini Neethu 1 , Tanushree Choudhury 2
Affiliation  

BACKGROUND Amphoteric membranes such as Titania Pillared Clay (TiPILC) membranes exhibit different charges at different pH ranges, subsequently show efficient separation for cationic and anionic organic pollutants in wastewater based on solution pH. The structural properties of such membranes determine their permeability and selectivity to a large extent. The present work is initiated to explore the possibility of enhancing the surface area of TiPILC membranes by grafting with 3- aminopropyltriethoxysilane. METHOD Grafted TiPILC membranes were fabricated by colloidal sol- gel route followed by dip coating, drying and sintering the membranes at 300°C. X-ray diffraction (XRD) spectra of the pillared photocatalyst membranes show the presence of only anatase phase, which exhibits better photocatalytic activity. Fourier Transform Infrared (FT-IR) spectra reveal the formation of delaminated TiPILC material. The specific surface area of TiPILC membrane obtained at pH3.5 is 183m2/g. RESULTS Literature survey of 47 papers was carried out for the work. 10 papers were based on patents being dealt on degradation of organic dyes in wastewater by conventional methods, though reports of membrane technology are limited in literature. The rest 37 papers outlined the importance of widespread use of titania photocatalyst powder for degradation studies. CONCLUSION The membrane material thus developed is efficient in complete decolouration of both Methylene Blue and Methyl Orange dyes on account of the high surface charge and high surface area in just one cycle of filtration.

中文翻译:

接枝二氧化钛柱状粘土膜处理废水中的亚甲基蓝和甲基橙染料。

背景技术两性膜例如二氧化钛支柱粘土(TiPILC)膜在不同的pH范围内显示出不同的电荷,随后基于溶液pH显示出对废水中阳离子和阴离子有机污染物的有效分离。这种膜的结构性质在很大程度上决定了它们的渗透性和选择性。开展本工作以探索通过与3-氨基丙基三乙氧基硅烷接枝来增加TiPILC膜表面积的可能性。方法通过胶体溶胶-凝胶法,然后在300°C下浸涂,干燥和烧结膜来制备TiPILC接枝膜。柱状光催化剂膜的X射线衍射(XRD)光谱显示仅存在锐钛矿相,其表现出更好的光催化活性。傅立叶变换红外(FT-IR)光谱揭示了分层TiPILC材料的形成。在pH3.5下获得的TiPILC膜的比表面积为183m2 / g。结果对该工作进行了47篇文献的文献调查。尽管膜技术的报道在文献中还很有限,但已有10篇论文基于处理传统方法降解废水中有机染料的专利。其余37篇论文概述了二氧化钛光催化剂粉末广泛用于降解研究的重要性。结论由于仅在一个过滤循环中具有高表面电荷和高表面积,因此开发的膜材料可有效地将亚甲基蓝和甲基橙染料完全脱色。在pH3.5下获得的TiPILC膜的比表面积为183m2 / g。结果对该工作进行了47篇文献的文献调查。尽管膜技术的报道在文献中还很有限,但已有10篇论文基于处理传统方法降解废水中有机染料的专利。其余37篇论文概述了二氧化钛光催化剂粉末广泛用于降解研究的重要性。结论由于仅在一个过滤循环中具有高表面电荷和高表面积,因此开发的膜材料可有效地使亚甲基蓝和甲基橙染料完全脱色。在pH3.5下获得的TiPILC膜的比表面积为183m2 / g。结果对该工作进行了47篇文献的文献调查。尽管膜技术的报道在文献中还很有限,但已有10篇论文基于处理传统方法降解废水中有机染料的专利。其余37篇论文概述了二氧化钛光催化剂粉末广泛用于降解研究的重要性。结论由于仅在一个过滤循环中具有高表面电荷和高表面积,因此开发的膜材料可有效地将亚甲基蓝和甲基橙染料完全脱色。尽管膜技术的报道在文献中还很有限,但已有10篇论文基于处理传统方法降解废水中有机染料的专利。其余37篇论文概述了二氧化钛光催化剂粉末广泛用于降解研究的重要性。结论由于仅在一个过滤循环中具有高表面电荷和高表面积,因此开发的膜材料可有效地将亚甲基蓝和甲基橙染料完全脱色。尽管膜技术的报道在文献中还很有限,但已有10篇论文基于处理传统方法降解废水中有机染料的专利。其余37篇论文概述了二氧化钛光催化剂粉末广泛用于降解研究的重要性。结论由于仅在一个过滤循环中具有高表面电荷和高表面积,因此开发的膜材料可有效地将亚甲基蓝和甲基橙染料完全脱色。
更新日期:2019-11-01
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