A highly uniform ZnO/NaTaO3 nanocomposite: Enhanced self-sensitized degradation of colored pollutants under visible light
A highly uniform ZnO/NaTaO3 nanocomposite: Enhanced self-sensitized degradation of colored pollutants under visible light
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高度均匀的ZnO/NaTaO3纳米复合材料：增强可见光下有色污染物的自敏降解
DOI：
10.1016/j.jallcom.2015.06.095
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发表时间：
2015-10
影响因子：
6.2
通讯作者：
Xiaojing Wang
中科院分区：
文献类型：
--
作者：
Bo Zhang;Lanxiao Zhao;Yiguo Su;Xiaojing Wang
本研究通过简单的水热合成方法制备了高度均匀的氧化锌/三氧化二钠复合材料。X-射线衍射仪证实了该复合材料是由纯立方相的NaTaO_3和六方相的氧化锌组成。扫描电子显微镜分析表明，制备的ZnO/NaTaO_3呈不规则的姜红色，尺寸明显小于纯的氧化锌，无明显团聚现象。EDS图谱表明，该复合材料中的四种元素(Na、Ta、O、Zn)分布非常均匀。研究了所制备的复合材料在紫外光和可见光照射下对亚甲基蓝的光催化降解行为。在紫外光照射下，光催化活性最高，亚甲基蓝(MB)的光降解率为99.8%，而氧化锌/NaTaO_3的光降解率为94%。更重要的是，氧化锌/三氧化二钠均一复合材料在可见光下对亚甲基蓝有较好的降解效果，这归因于氧化锌和三氧化二钠之间的协同作用，使染料具有良好的吸附能力和较高的电子分离效率。证实了在可见光照射下，染料而不是半导体被激发，并根据实验结果提出了自敏化光催化机理。
In this study, a highly uniform ZnO/NaTaO3composite was prepared via simple hydrothermal synthesis. XRD confirmed the composite was constructed by pure cubic phase of NaTaO3and hexagonal phase of ZnO. SEM analysis showed that as-prepared ZnO/NaTaO3shaped as an irregular ginger with an obviously smaller size than that of pure ZnO without obvious agglomeration. EDS mapping demonstrated that the four elements (Na, Ta, O, Zn) in the composite were very uniformly distributed. The photocatalytic behaviors of as-prepared composites were studied in the degradation of methylene blue both under UV and visible irradiation. The bare ZnO showed the highest activity with 99.8% methylene blue (MB) photodegraded in 70 min under UV light irradiation whereas 94% photodegraded rate was achieved for ZnO/NaTaO3. More importantly, the uniform composite of ZnO/NaTaO3exhibited effective degradation of methylene blue under visible light which can be attributed to the well dyes adsorption abilities and the high efficiency of electron separation, induced by the synergistic effect between ZnO and NaTaO3. It is confirmed the dye rather than a semiconductor is excited under visible light irradiation and a self-sensitized photocatalytic mechanism was then proposed based on the experimental results.
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影响因子：
3
作者：
Wei Yan;H. Fan;Chao Yang
通讯作者：
Wei Yan;H. Fan;Chao Yang
离子交换吸附法制备Sb2S3/TiO2纳米管同轴异质结构阵列及其光催化活性
影响因子：
6.2
作者：
Xie, Haixia;Que, Wenxiu;He, Zuoli;Zhong, Peng;Liao, Yulong;Wang, Gangfeng
通讯作者：
Wang, Gangfeng
DOI：
10.1039/c3ta11684k
发表时间：
2013-09-28
期刊：
Journal of materials chemistry. A
影响因子：
--
作者：
Hai Z;Kolli NE;Uribe DB;Beaunier P;José-Yacaman M;Vigneron J;Etcheberry A;Sorgues S;Colbeau-Justin C;Chen J;Remita H
通讯作者：
Remita H
影响因子：
22.1
作者：
Wenfeng Wu;Z. Fu;Senbei Tang;Shuai Zou;X. Wen;Y. Meng;Shu-Jing Sun;Jie Deng;Yachun Liu
通讯作者：
Wenfeng Wu;Z. Fu;Senbei Tang;Shuai Zou;X. Wen;Y. Meng;Shu-Jing Sun;Jie Deng;Yachun Liu
具有增强电子空穴分离和优异光催化性能的 BiPO4/BiOCl 异质结光催化剂
影响因子：
6.7
作者：
Duo, Fangfang;Wang, Yawen;Fan, Caimei
通讯作者：
Fan, Caimei