Synthesis and properties of (Yb, N)-TiO2 photocatalyst for degradation of methylene blue (MB) under visible light irradiation
Synthesis and properties of (Yb, N)-TiO2 photocatalyst for degradation of methylene blue (MB) under visible light irradiation
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(Yb,N)-TiO2可见光降解亚甲基蓝(MB)光催化剂的合成及性能
DOI：
10.1016/j.materresbull.2015.04.060
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发表时间：
2015-10
影响因子：
5.4
通讯作者：
Q. J. Liu
中科院分区：
文献类型：
--
作者：
J. Zhang;L. J. Xu;Z. Q. Zhu;Q. J. Liu
(Yb采用溶胶-凝胶法与微波化学合成相结合的方法合成了（N，N）-TiO 2光催化剂。此外，效率的（Yb，N）-TiO 2作为光催化剂降解亚甲基蓝（MB）使用可见光照射进行了评价。采用XRD、TEM、XPS、UV-vis-DRS和PL等手段对样品进行了表征。结果表明，（Yb，N）-TiO 2光催化剂具有稳定的TiO 2晶相。TEM显微照片表明样品的平均粒径约为12 nm。结果表明，与商业TiO 2-P25，N-TiO 2和我们组制备的Yb-TiO 2相比，其带隙能量吸收边向长波方向移动。结果表明，（Yb，N）-TiO 2在可见光下的光催化活性明显高于TiO 2-P25、N-TiO 2和Yb-TiO 2。
(Yb, N)-TiO2photocatalyst has been synthesized by sol–gel method combined with microwave chemical synthesis. Also, the efficiency of the (Yb, N)-TiO2as a photocatalyst for the degradation of methylene blue (MB) using visible light irradiation has been evaluated. The prepared samples were characterized by XRD, TEM, XPS, UV–vis-DRS and PL. The results show that the (Yb, N)-TiO2photocatalyst has the anatase TiO2crystalline phase. The TEM micrograph demonstrated that the average particle size of the sample was about 12 nm. The band-gap energy absorption edge shifted to longer wavelength as compared to commercial TiO2-P25, N-TiO2and the Yb-TiO2prepared by our group. Results of degradation revealed that the (Yb, N)-TiO2has shown much more higher photocatalytic activity than that of the TiO2-P25, the N-TiO2and the Yb-TiO2under the visible light.
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