Photocatalytic activity of Nd‐doped ZnO for the degradation of C.I. Reactive Blue 4 in aqueous suspension
Photocatalytic activity of Nd‐doped ZnO for the degradation of C.I. Reactive Blue 4 in aqueous suspension
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DOI：
10.1002/ep.10318
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发表时间：
2009-07
影响因子：
2.8
通讯作者：
Y. Zhou;S. X. Lu;Wenguo Xu
中科院分区：
文献类型：
--
作者：
Y. Zhou;S. X. Lu;Wenguo Xu
制备了不同Nd含量的Nd掺杂ZnO纳米粒子，并通过X射线粉末衍射、紫外-可见光谱、X射线光电子能谱、红外光谱和高分辨透射电子显微镜对其进行了表征。结果表明，Nd掺杂ZnO的粒径比纯ZnO小得多，这是提高其光催化活性的关键。比较了不同Nd负载量的Nd掺杂ZnO与纯ZnO的光催化活性，并考察了溶液pH对C.研究了活性蓝4。结果表明，C.I. Nd掺杂ZnO上的活性蓝4随着Nd负载量的增加而增加，直到2.5摩尔%，然后下降。降解速率在pH = 11时达到最大值，然后下降。在所研究的催化剂中，2.5摩尔% Nd掺杂的ZnO是最活性的，并且C. I.当催化剂浓度为0.1g/L时，90 min内活性艳蓝4的脱色率可达91.25%。© 2008美国化学工程师协会环境规划，2009
Nd‐doped ZnO nanoparticles with different Nd contents were synthesized and characterized by X‐ray power diffraction, UV–vis, X‐ray photoelectron spectroscopy, infrared spectra, and high‐resolution transmission electron microscope. The results revealed that the particle size of Nd‐doped ZnO is much smaller than that of pure ZnO, which is critical for enhancing the photocatalytic activity. The photocatalytic activity of Nd‐doped ZnO with different Nd loading was compared with pure ZnO, and the effects of the solution pH in the degradation of C.I. Reactive Blue 4 were studied. It was observed that the rate of degradation of C.I. Reactive Blue 4 over Nd‐doped ZnO increases with increasing Nd loading up to 2.5 mol % and then decreases. The rate of degradation reaches a maximum value approximately at pH = 11 and then decreases. Among the catalyst studied, the 2.5 mol % Nd‐doped ZnO was the most active, and the degradation rate of C.I. Reactive Blue 4 could reach 91.25% in 90 min when the concentration of the catalyst was 0.1 g/L. © 2008 American Institute of Chemical Engineers Environ Prog, 2009