| SnO2纳米棒的生长过程、发光性能及光催化活性 | |
| Growth Process, Photoluminescence Property and Photocatalytic Activity of SnO2 Nanorods | |
| 摘要: 在柠檬酸的调控下，采用水热法合成SnO2纳米棒。利用高分辨透射电子显微镜、X射线衍射、傅里叶变换红外光谱、Brunauer-Emmett-Teller氮吸附、紫外可见漫反射光谱和光致发光光谱研究了SnO2样品在生长过程中的结构特征。结果表明，SnO2纳米晶体的生长可进一步分为2个阶段：早期SnO2纳米晶遵循定向附着模式生长，而后期采取Ostwald熟化模式沿[001]方向缓慢生长。SnO2纳米粒子在不同阶段的光致发光性能和光催化活性显示：在晶体的生长过程中，这2种性能变化趋势几乎相似，即生长前期性能迅速增加，随后性能逐渐降低。 | |
| 关键词: 二氧化锡 定向生长 奥斯特瓦尔德熟化 光催化 光致发光 | |
| 基金项目: 国家自然科学基金（No.21661017）和江西省教育厅科研项目（No.GJJ190708，GJJ180718）资助。 | |
| Abstract: In this work, under the regulation of citric acid, SnO2 nanorods were synthesized by hydrothermal method. The structural characteristics of SnO 2 samples during the growth process was investigated by using high-resolution transmission electron microscope, X-ray diffraction, infrared spectra Fourier transform spectra, Brunauer-EmmettTeller nitrogen physisorption, UV-visible diffuse reflection spectrum, and photoluminescence spectra. The results reveal that the overall crystal growth can further be divided into two stages:the oriented attachment of SnO2 nanocrystals at the early stage and subsequently a slow crystal growth along the[001] direction following the Ostwald ripening mode. Photoluminescence property and photocatalytic activity of SnO2 nanoparticles at the different stages was also investigated, which show a similar changing trend with the crystal growing:greatly increased at the former stage and gradually decreased at the latter stage. | |
| Keywords: SnO2 oriented attachment Ostwald ripening photocatalytic activity photoluminescence | |
| 投稿时间：2020-03-25 修订日期：2020-05-24 | |
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| 展红全,邓册,刘权,李小红,谢志鹏,汪长安.SnO2纳米棒的生长过程、发光性能及光催化活性[J].无机化学学报,2020,36(8):1605-1612. | |
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