Special morphologies of Mg, Ca, and Y-doped ZnO/La₂O₃ composite for photocatalysis

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• 作者：Chun Li ; Ruisheng Hu ; ^{cehrs@imu.edu.cn" class="auth_mail} ; Tingting Zhou ; Haitao Wu ; Kunpeng Song ; Xiaoxia Liu ; Ruida Wang
• 关键词：Composite materials ; Mg ; Ca ; Y-doping ; ZnO/La2O3 ; Morphology ; Photocatalysis
• 刊名：Materials Letters
• 出版年：1 June, 2014
• 年：2014
• 卷：124
• 期：Complete
• 页码：81-84
• 全文大小：2380 K

文摘

ZnO/La₂O₃ composite modified by 5% alkaline-earth metal (Mg, Ca), and rare-earth metal (Y) were prepared by using glucose sol-gel method. The effects of varying doping on structures, morphologies, and optical properties of ZnO/La₂O₃ composite were characterized by XRD, SEM, TEM and PL techniques. Different doping gave rise to novel and special morphologies of ZnO/La₂O₃ composite with different amounts of oxygen vacancies. Amongst the samples, Ca-doped ZnO/La₂O₃ composite with network distribution achieved the highest photodegradation of phenol (99%) after UV light irradiation for 3.5 h. Photocatalytic activities correlated with the structures, morphologies and oxygen vacancies of the samples were investigated.