Preparation and photocatalytic property of Fe2O3/ZnO composites with superhydrophobicity
Preparation and photocatalytic property of Fe2O3/ZnO composites with superhydrophobicity
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DOI：
10.1007/s12613-020-2096-y
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发表时间：
2021-06-01
影响因子：
4.8
通讯作者：
Aziz, Wisam J.
中科院分区：
文献类型：
--
作者：
Rahmah, Muntadher, I;Sabry, Raad S.;Aziz, Wisam J.
采用一种简便的方法制备了具有超疏水性和光催化活性的Fe 2 O3修饰的ZnO微/纳米结构。考察了硬脂酸（SA）和Fe 2 O3对TiO 2的形貌特征、水接触角（WCA）和光催化降解性能的影响。超疏水性结果表明，当SA的重量从5增加到20 mg时，WCA从144度+/- 2度增加到154度+/- 2度，因为形成了分级或粗糙的结构。此外，选择SA处理（20 mg）前后的Fe 2 O3改性的ZnO微/纳米结构表面，以评估在可见光支持下亚甲基蓝（MB）染料的光降解。MB降解后80分钟的照射，其光降解效率为91.5%，在超疏水状态和92%的亲水状态。在两种状态下的光催化活性的这种改善可能归因于表面积的增加和电荷载流子分离的改善。
A facile approach was developed to construct Fe2O3-modified ZnO micro/nanostructures with excellent superhydrophobicity and photocatalytic activities. The effects of stearic acid (SA) and Fe2O3 on the morphological characteristics, water contact angle (WCA), and photocatalytic degradation were investigated. Superhydrophobicity results showed that WCA increased from 144 degrees +/- 2 degrees to 154 degrees +/- 2 degrees when the weight of SA increased from 5 to 20 mg because of the formation of a hierarchical or rough structure. Furthermore, Fe2O3-modified ZnO micro/nanostructure surfaces before and after SA treatment (20 mg) were chosen to evaluate the photodegradation of methylene blue (MB) dye under the support of visible light. MB degraded after 80 min of irradiation, and its photodegradation efficiencies were 91.5% at the superhydrophobic state and 92% at the hydrophilic state. This improvement in photocatalytic activity at both states might be attributed to an increase in surface area and improvement in charge carrier separation.