掺入TiO2纳米粒子的聚砜膜的光催化性能研究

IF 2.4 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Molecular and Engineering Materials Pub Date : 2017-07-28 DOI:10.1142/S2251237317500058
Xingxing Chen, Weiqi Zhou, Zhe Chen, Lei Yao
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引用次数: 6

摘要

为了研究掺入的纳米颗粒对杂化膜光催化性能的影响,制备了未覆盖和覆盖的聚砜/TiO2杂化膜。利用正电子湮没γ射线能谱与正电子束相结合的方法研究了两种膜的深度分布。通过在Xe灯照射下对罗丹明B(RhB)水溶液的降解来评价膜的光催化活性。应用紫外-可见光谱法研究了聚砜层的紫外透射特性。电化学阻抗谱用于检测辐照过程中覆盖膜产生的光生电荷。可以发现,紫外光可以穿透覆盖层(约230nm),掺入的纳米颗粒在辐照下仍能产生电荷,这赋予了覆盖膜的光催化能力。
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Study of the Photocatalytic Property of Polysulfone Membrane Incorporating TiO2 Nanoparticles
In order to investigate the effect of the incorporated nanoparticles on the photocatalytic property of the hybrid membranes, the uncovered and covered polysulfone/TiO2 hybrid membranes were prepared. Positron annihilation γ-ray spectroscopy coupled with a positron beam was utilized to examine the depth profiles of the two membranes. The photocatalytic activities of the membranes were evaluated by the degradation of Rhodamine B (RhB) aqueous solution under the irradiation of Xe lamp. UV-Vis spectroscopy was applied to study the UV transmission through the polysulfone layer. Electrochemical impedance spectroscopy was used to detect the photo-generated charges by the covered membrane during the irradiation. It can be found that UV light can penetrate through the covered layer (about 230nm), and the incorporated nanoparticles can still generate charges under irradiation, which endows the photocatalytic ability of the covered membrane.
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Journal of Molecular and Engineering Materials
Journal of Molecular and Engineering Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-
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