Solvent-free preparation of superhydrophobic and photocatalytic monoliths for water treatment applications

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-05-14 DOI:10.1016/j.colsurfa.2025.137227

Nusret Celik , Sultan Karagoz , Menekse Sakir , Erkan Yilmaz , Aziz Genc , Thomas J.A. Slater , Mustafa Serdar Onses

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Abstract

Sustainable and practical preparation of nanostructured materials with superhydrophobicity and photocatalytic activity remains a persistent challenge for a diverse range of applications including water treatment and self-cleaning surfaces. This study reports solvent-free mechanochemical grafting of polydimethylsiloxane to photocatalytic TiO₂ nanoparticles with a diameter of 21 nm and generation of a monolithic material with demonstrated use in adsorption and degradation of organic pollutants. The monolith exhibited bulk superhydrophobicity with a water contact angle of 172⁰ and sliding angle of 1⁰. At the same time, the monolith effectively degraded organic pollutants such as methylene blue, under UV light with 92 % efficiency in 7 h. Furthermore, the superhydrophobic monolith demonstrated effective sorption of hexane, toluene, sunflower oil and pump oil from water with efficiencies approaching 90 %. These findings demonstrate the promise of solvent-free mechanochemical processes in developing nanostructured materials for water treatment applications.

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水处理应用超疏水和光催化单体的无溶剂制备

可持续和实用的制备具有超疏水性和光催化活性的纳米结构材料仍然是包括水处理和自清洁表面在内的各种应用的持续挑战。本研究报道了聚二甲基硅氧烷的无溶剂机械化学接枝到直径为21 nm的光催化TiO2纳米颗粒上，并生成了一种用于吸附和降解有机污染物的单片材料。整体石表现出整体超疏水性，水接触角为172⁰，滑动角为1⁰。同时，在紫外光照射下，单体体在7 h内有效降解亚甲基蓝等有机污染物，效率为92 %。此外，超疏水单体还能有效吸附水中的己烷、甲苯、葵花籽油和泵油，效率接近90% %。这些发现证明了无溶剂机械化学工艺在开发水处理应用的纳米结构材料方面的前景。

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来源期刊

Colloids and Surfaces A: Physicochemical and Engineering Aspects 化学-物理化学

CiteScore

8.70

自引率

9.60%

发文量

2421

审稿时长

56 days

期刊介绍： Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.