花状空心Sn3O4微球的制备及其光催化性能的研究

doi:10.15541/jim20150452

无机材料学报 ›› 2016, Vol. 31 ›› Issue (5): 461-465.DOI: 10.15541/jim20150452

花状空心Sn₃O₄微球的制备及其光催化性能的研究

崔磊^1,2, 杨丽娟¹, 王帆¹, 夏炜炜²

(1. 宿迁学院信息工程学院, 宿迁 223800; 2. 扬州大学物理科学与技术学院, 扬州 225002)

收稿日期:2015-09-21 修回日期:2015-12-14 出版日期:2016-05-20 网络出版日期:2016-04-25
基金资助:
国家自然科学基金(61474096).江苏省自然科学基金(BK20150453).江苏省高校自然科学基金(15KJD140005).江苏省博士后基金(1501144B).宿迁市科技计划项目(S201511).宿迁学院科研基金(2015KY10).江苏省青蓝工程资助.

Fabrication of Flower-like Sn₃O₄Hollow Microspheres and Their Photocatalytic Activity

CUI Lei¹, YANG Li-Juan¹, WANG Fan¹, XIA Wei-Wei²

(1. College of information and technology, Suqian College, Suqian 223800, China; 2. College of Physics Science and Technology, Yangzhou University, Yangzhou 225002 , China)

Received:2015-09-21 Revised:2015-12-14 Published:2016-05-20 Online:2016-04-25
Supported by:
National Natural Science Foundation of China (61474096).Natural Science Foundation of Jiangsu Province, China.(BK20150453).Natural Science Foundation of the Jiangsu Higher Education Institutions (15KJD140005).Jiangsu Postdoctoral Sustentation Fund (1501144B).Science and Technology Program of Suqian (S201511)Research Foundation.

摘要/Abstract

摘要：

通过简易的一步水热法在不同制备温度(120℃、135℃、150℃)下成功合成了花状空心Sn₃O₄微球。利用X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、高分辨透射电子显微镜(HRTEM)、表面积分析仪、紫外可见吸收光谱(UV-Vis)和光致发光谱 (PL)等测试手段对其形貌、结构、比表面积和光学性质进行了分析, 并以罗丹明B(RhB)为模型污染物研究了样品的光催化性能。实验结果显示: 中空微球结构不随水热合成温度发生明显改变; 随着水热合成温度的升高, 样品的UV-Vis吸收峰从384 nm蓝移至365 nm, 同时PL发射峰位的峰强逐渐降低。光催化结果显示, 在120℃合成的空心Sn₃O₄微球具备最优的光催化性能。

关键词: 水热法, Sn3O4, 氧空位, 光催化性能

Abstract:

Flower-like Sn₃O₄ hollow microspheres were synthesized via one-step hydrothermal process with varying reaction temperature (120℃, 135℃ and 150℃). The crystal structure, morphology, composition, specific surface area, and optical property of the obtained products were characterized by X-ray diffraction(XRD), scanning electron microscope(SEM), transmission electron microscope(TEM), high resolution transmission electron microscope(HRTEM), automatic surface area analyzer, UV-Vis absorption spectrum, and photoluminescence spectrum (PL). The photocatalytic experiments of the as-prepared samples were evaluated by decomposing the model pollutants rhodamine B (RhB). Systematical measurements revealed that the morphology of the hollow microsphere structures was faithfully preserved as changing the hydrothermal synthesized temperature. With the increase of the hydrothermal synthesized temperature, the UV-Vis absorption peak of samples shifted from 384 nm to 365 nm and the PL intensity further weakened. Finally, the photocatalytic activity presented that Sn₃O₄microspheres hydrothermal synthesized at 120℃ had the best photcatalytic performance.

Key words: hydrothermal method, oxygen vacancy, Sn3O4, photocatalytic activity

中图分类号:

O474
O643

崔磊, 杨丽娟, 王帆, 夏炜炜. 花状空心Sn₃O₄微球的制备及其光催化性能的研究[J]. 无机材料学报, 2016, 31(5): 461-465.

CUI Lei, YANG Li-Juan, WANG Fan, XIA Wei-Wei. Fabrication of Flower-like Sn₃O₄Hollow Microspheres and Their Photocatalytic Activity[J]. Journal of Inorganic Materials, 2016, 31(5): 461-465.

图/表 7

图1 不同反应温度所生成样品的XRD图谱

Fig. 1 XRD patterns of samples synthesized at different reaction temperatures

图2 在(a)120℃和图(b)150℃温度下合成的样品的HRTEM照片, 插图为样品的TEM照片

Fig. 2 HRTEM images of samples hydrothermal synthesized at (a) 120℃ and (b) 150℃ with insets showing the corresponding TEM images

图3 在(a)120℃、(b)135℃和(c)150℃下合成样品的SEM照片

Fig. 3 SEM images of samples hydrothermal synthesized at (a) 120℃, (b) 135℃ and (c) 150℃

图4 Sn3O4样品的N2吸附/脱附等温线

Fig. 4 N2 adsorption/desorption isotherms of synthesized Sn3O4

图5 不同反应温度下制备的Sn3O4样品的UV-Vis图谱

Fig. 5 UV-Vis absorption spectra of Sn3O4 hydrothemal synthesized at different reaction temperatures

图6 不同温度下水热合成Sn3O4样品的PL图谱

Fig. 6 PL spectra of Sn3O4 hydrothermal synthesized at different temperatures

图7 不同温度下水热合成Sn3O4样品对RhB的降解曲线

Fig. 7 Degradation profiles of RhB with Sn3O4 hydrothermal synthesized at different temperatures

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花状空心Sn₃O₄微球的制备及其光催化性能的研究

Fabrication of Flower-like Sn₃O₄Hollow Microspheres and Their Photocatalytic Activity

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