| 花状ZnO/ZnS异质结构的简易合成、结构表征及光催化活性(英文) |
| Flower-Like ZnO/ZnS Heterostructures: Facile Synthesis, Structural Characterization and Photocatalytic Activity |
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| 摘要: 采用简便的两步溶液相化学方法，在较低温度下(80 ℃)，制备出了花状的ZnO/ZnS异质结构。分别利用X射线衍射、X射线光电子能谱仪、扫描电子显微镜、透射电子显微镜、紫外-可见光谱仪等测试手段对所制备的样品进行表征，结果表明ZnO/ZnS异质结构是由花状ZnO纳米结构和ZnS纳米粒子组成。在光降解罗丹明B(RhB)的测试中，ZnO/ZnS异质结构样品体现出了比ZnO前驱物和商业P25光催化剂更高的光催化效率，这主要可归因于异质结构更有利于电子-空穴的有效分离。ZnO/ZnS光催化剂体现出良好的循环稳定性。 |
| 关键词: ZnO/ZnS异质结构 化学合成 微结构 光催化 |
| 基金项目: |
| Abstract: ZnO/ZnS heterostructures with flower-like morphology have been prepared via a simple two-step chemical solution method at low temperature (80 ℃). The as-prepared samples were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy and UV-Vis spectroscopy. The results demonstrate that the ZnO/ZnS heterostructure is composed of ZnO microflower coated by ZnS nanoparticles. In the test for photodegradation of Rhodamine B (RhB), the ZnO/ZnS sample shows higher photocatalytic efficiency than those of ZnO precursor and commercial photocatalyst of P25, which is mainly attributed to the effective electron-hole separation at the interfaces of the heterostructures. The ZnO/ZnS photocatalyst also retains good cycling stability during the photocatalytic degradation of RhB. |
| Keywords: ZnO/ZnS heterostructure chemical synthesis microstructure photocatalysis |
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| 李本侠,王艳芬,吴玉雷.花状ZnO/ZnS异质结构的简易合成、结构表征及光催化活性(英文)[J].无机化学学报,2012,28(2):417-424. |
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