层状、花形和棒状钛酸铋纳米结构的可控合成及光催化性能

引用本文: 林雪, 于丽丽, 闫丽娜, 闫永胜, 关庆丰, 赵晗. 层状、花形和棒状钛酸铋纳米结构的可控合成及光催化性能[J]. 无机化学学报, 2013, 29(11): 2415-2421. doi: 10.3969/j.issn.1001-4861.2013.00.346 shu

Citation: LIN Xue, YU Li-Li, YAN Li-Na, YAN Yong-Sheng, GUAN Qing-Feng, ZHAO Han. Controllable Synthesis and Photocatalytic Activity of Layered, Flowerlike, and Rodlike Bismuth Titanate Nanostructures[J]. Chinese Journal of Inorganic Chemistry, 2013, 29(11): 2415-2421. doi: 10.3969/j.issn.1001-4861.2013.00.346 shu

层状、花形和棒状钛酸铋纳米结构的可控合成及光催化性能

林雪 ^1, ,
于丽丽 ^1, ,
闫丽娜 ^1, ,
闫永胜 ^2, ,
关庆丰 ^3, ,
赵晗 ^1,

基金项目:
环境友好材料制备与应用教育部重点实验室项目和吉林省科技发展计划项目(20130522071JH)资助项目。 (20130522071JH)

摘要: 通过可控水热法,制备出层状、花形和棒状钛酸铋(Bi₄Ti₃O₁₂,BIT)纳米结构。通过X射线衍射(XRD)和场发射扫描电子显微镜(FESEM)观测其结构和形貌特征。XRD图显示,所制备的样品为层状钙钛矿结构。FESEM结果表明,通过控制水热过程的反应参数可以得到不同形貌的纳米粉体。紫外-可见漫反射光谱(UV-VisDRS)表明BIT样品的带隙能约为2.63~2.95eV。利用可见光(λ>420nm)照射下的甲基橙降解实验评价了BIT样品的光催化性能。结果表明,BIT的光催化活性比掺氮TiO₂(N-TiO₂)高得多。所制备的层状BIT纳米结构光催化效率最高,经可见光照射360min,甲基橙溶液的降解率可达95.0%。同时还研究了结构和形貌对不同条件下制备的BIT样品光催化活性的影响。

关键词:

钛酸铋;层状;花形;棒状;可控合成;光催化降解

English

Controllable Synthesis and Photocatalytic Activity of Layered, Flowerlike, and Rodlike Bismuth Titanate Nanostructures

1.
1 College of Chemistry, Key Laboratory of Preparation and Application of Environmentally Friendly Materials of the Ministry of Education, Jilin Normal University, Siping, Jilin 136000, China;
Received Date: 31 January 2013
Fund Project:
环境友好材料制备与应用教育部重点实验室项目和吉林省科技发展计划项目(20130522071JH)资助项目。

Abstract: Layered, flowerlike, and rodlike bismuth titanate (Bi₄Ti₃O₁₂, BIT) nanostructures were synthesized via the controllable hydrothermal method. The phase structures and morphologies were measured by X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). XRD patterns demonstrate that the as-prepared samples are of layered-perovskite structure. FESEM shows that BITcrystals can be fabricated in different morphologies by simply manipulating the reaction parameters of hydrothermal process. The UV-Vis diffuse reflectance spectra (UV-Vis DRS) reveal that the band gaps of BIT photocatalysts are 2.63~2.95 eV. The as-prepared BIT photocatalysts exhibit higher photocatalytic activities in the degradation of methyl orange (MO) under visible light irradiation (λ>420 nm) compared with traditional N-doped TiO₂ (N-TiO₂). Layered BIT nanostructures show the highest photocatalytic activity. Up to 95.0% MO is decolorized after visible light irradiation for 360 min. In addition, the reason for the difference in the photocatalytic activities obtained at different conditions was studied based on the structures and morphologies.

Key words:

bismuth titanate;layered;flowerlike;rodlike;controllable synthesis;photocatalytic degradation

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

层状、花形和棒状钛酸铋纳米结构的可控合成及光催化性能

English

Controllable Synthesis and Photocatalytic Activity of Layered, Flowerlike, and Rodlike Bismuth Titanate Nanostructures

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

层状、花形和棒状钛酸铋纳米结构的可控合成及光催化性能

English

Controllable Synthesis and Photocatalytic Activity of Layered, Flowerlike, and Rodlike Bismuth Titanate Nanostructures

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

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