| 苯乙烯协助水热制备高催化活性ZnO管 |
| Polystyrene -Assisted Hydrothermal Preparation of ZnO Tubes with High Photocatalytic Activity |
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| 摘要: 采用苯乙烯微球为模板水热合成了直径为1~2 μm，管壁厚度约200 nm的ZnO管。用SEM和XRD对制得的样品进行表征，研究表明，醋酸锌浓度和水热时间在ZnO管的制备过程中起到重要作用。在实验结果的基础上，提出了ZnO管的形成机理。紫外-可见吸收光谱计算出ZnO管的禁带宽度为2.96 eV，合成的ZnO管对罗丹明B具有很高的紫外光催化活性。 |
| 关键词: ZnO管 苯乙烯乳液 模板 光催化性能 |
| 基金项目: |
| Abstract: ZnO tubes with diameter of 1~2 μm and wall thickness of ca.200 nm were synthesized by a simple hydrothermal method using polystyrene (PS) microspheres as the template. Results from SEM and XRD show that the concentration of zinc acetate and hydrothermal time plays an important role in the formation of ZnO tubes. The growth mechanism is proposed. The band gap value calculated from a UV-Vis absorption spectrum of ZnO tubes is 2.96 eV. The as-synthesized ZnO tubes exhibit high photocatalytic activity for the photodegradation of Rhodamine B under UV-light irradiation. |
| Keywords: ZnO tubes PS latex Template Photocatalytic activity. |
| 投稿时间：2014-03-26 修订日期：2014-09-13 |
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