Abstract

Nanofiltration technology has been viewed as an appealing solution for the effective removal of dye effluents from wastewater and dye desalination due to its environmental friendliness and low energy consumption. Sol-gel technique has been used to produce novel porous nanomaterials with well-defined structures and complicated forms. As a result, it’s critical to devise efficient methods for dye recycling and selective dye separation from dye effluents. Heavy metal ions that are highly poisonous and non-biodegradable can cause major health concerns in humans and animals. Single amino acid phenylalanine derivative is self assembled and intercalated with sol-gel silicate matrix to form a zero-gel membrane. The self assembled silica membrane was characterized by UV-Visible, UV-DRS, Powder-XRD, FT-IR, FT-Raman, SEM with EDX analysis, AFM and theoretical studies. The results confirm the intercalation of the nanotubes with silicate pores. This membrane was tested for the removal of toxic metal chromium and dye crystal violet from the contaminated water samples. It is observed that the membrane is effective in the removal of dye by adsorption and chromium ions by filtration. It is proposed that the pore size and the adsorption of ions with aminoacid is the water cleanup mechanism. The membrane may be reused by photocatalytic reduction of dye after the filtration process. Heavy metal ion removal from wastewater is critical for maintaining a healthy environment and human health. Heavy metal-contaminated wastewater enters the environment, endangering human health and the ecosystem. Adsorption is now widely considered as the most effective method of water purification. Contaminants are adsorbed to the functional groups of the membrane or to the sorbent inserted into the support membrane in membrane adsorption, while waste water passes through. This work is done to propose a novel peptide-based filters that remove contaminants by adsorption and filtration. We have found that it filters harmful chromium and dye crystal violet simultaneously more than 90%. The filter proposed is effectively reusable after photocatlytic exposure is the novel finding.

中文翻译：

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苯丙氨酸自组装纳米管插层溶胶-凝胶硅胶膜协同去除有害铬和染料颗粒——组装、探测和新型光催化回收

摘要

由于其环境友好和低能耗，纳滤技术已被视为有效去除废水和染料脱盐中染料流出物的有吸引力的解决方案。溶胶-凝胶技术已被用于生产具有明确结构和复杂形式的新型多孔纳米材料。因此，设计有效的染料回收方法和从染料流出物中选择性分离染料至关重要。剧毒且不可生物降解的重金属离子会对人类和动物造成严重的健康问题。单氨基酸苯丙氨酸衍生物自组装并嵌入溶胶-凝胶硅酸盐基质中形成零凝胶膜。自组装二氧化硅膜通过 UV-Visible、UV-DRS、Powder-XRD、FT-IR、FT-Raman、SEM 和 EDX 分析进行表征，AFM 和理论研究。结果证实了纳米管与硅酸盐孔的插层。测试了该膜从受污染的水样中去除有毒金属铬和染料结晶紫的能力。观察到该膜通过吸附去除染料和通过过滤去除铬离子是有效的。提出孔径大小和离子与氨基酸的吸附是水净化机制。该膜可在过滤过程后通过染料的光催化还原重复使用。从废水中去除重金属离子对于维持健康的环境和人类健康至关重要。重金属污染的废水进入环境，危害人类健康和生态系统。吸附现在被广泛认为是最有效的水净化方法。污染物被吸附到膜的官能团或吸附到膜吸附中插入支撑膜的吸附剂，而废水则通过。完成这项工作是为了提出一种新型的基于肽的过滤器，该过滤器通过吸附和过滤去除污染物。我们发现它能同时过滤90%以上的有害铬和染料结晶紫。提出的过滤器在光催化曝光后可有效重复使用是一项新发现。我们发现它能同时过滤90%以上的有害铬和染料结晶紫。提出的过滤器在光催化曝光后可有效重复使用是一项新发现。我们发现它能同时过滤90%以上的有害铬和染料结晶紫。提出的过滤器在光催化曝光后可有效重复使用是一项新发现。