Abstract In this work, we report a facile route for the synthesis of worm-like mesoporous $$\hbox {Fe}_{2}\hbox {O}_{3}$$ Fe 2 O 3 -doped $$\hbox {TiO}_{2}$$ TiO 2 monolithic composites through a direct template sol–gel method, for the photocatalytic degradation of textile dye (acid blue 113) pollutants. The monolith surface morphology and structural properties have been characterized using p-XRD, HR-SEM–EDAX, HR-TEM–SAED, TGA, UV–Vis–DRS, PLS, FTIR, XPS and BET analyses. The stoichiometric doping of $$\hbox {Fe}_{2}\hbox {O}_{3}$$ Fe 2 O 3 unleashes visible light photocatalytic activity through a red shift in the light absorption character of $$\hbox {TiO}_{2}$$ TiO 2 , thereby narrowing the energy band gap, and an eventual increase in $$\hbox {e}^{-}/\hbox {h}^{+}$$ e - / h + separation centres. The monolithic photocatalyst exhibits better properties in terms of surface area, pore volume and diameter. The physico-chemical parameters, such as solution pH, dopant stoichiometry, catalyst quantity, dye concentration, photo-sensitizers and light intensity have been optimized to enhance the photocatalysis efficiency. The photocatalyst exhibits complete dye mineralization within 0.5 h, and also reusable for five continuous cycles. Graphic Abstract

中文翻译：

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使用氧化铁修饰的介孔二氧化钛框架的基于新时代整体设计的可见光响应和可重复使用的光催化剂材料

摘要 在这项工作中，我们报道了一种合成蠕虫状介孔 $$\hbox {Fe}_{2}\hbox {O}_{3}$$ Fe 2 O 3 掺杂 $$\hbox {TiO}_{2}$$ TiO 2 整体复合材料通过直接模板溶胶-凝胶法，用于纺织染料（酸性蓝113）污染物的光催化降解。已经使用 p-XRD、HR-SEM-EDAX、HR-TEM-SAED、TGA、UV-Vis-DRS、PLS、FTIR、XPS 和 BET 分析表征了整体表面形态和结构特性。$$\hbox {Fe}_{2}\hbox {O}_{3}$$ Fe 2 O 3 的化学计量掺杂通过 $$\hbox { 的光吸收特性的红移释放可见光光催化活性TiO}_{2}$$ TiO 2 ，​​从而缩小能带隙，最终增加$$\hbox {e}^{-}/\hbox {h}^{+}$$ e - / h + 分离中心。整体式光催化剂在表面积、孔体积和直径方面表现出更好的性能。优化了物理化学参数，如溶液 pH 值、掺杂剂化学计量、催化剂数量、染料浓度、光敏剂和光强度，以提高光催化效率。光催化剂在 0.5 小时内表现出完全的染料矿化，并且可以重复使用五个连续循环。图形摘要