Influence of the surface-to-bulk defects ratio of ZnO and TiO₂ on their UV-mediated photocatalytic activity

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• 作者：Christos A. Aggelopoulos^a ; ^{caggelop@iceht.forth.gr} ; Marinos Dimitropoulos^a ; ^b ; Aikaterini Govatsi^a ; ^c ; Lamprini Sygellou^a ; Christos D. Tsakiroglou^a ; Spyros N. Yannopoulos^a ; ^{sny@iceht.forth.gr}
• 关键词：Photocatalysis ; Zinc oxide ; Surface defects ; Bulk defects ; Nanoparticles
• 刊名：Applied Catalysis B: Environmental
• 出版年：2017
• 出版时间：15 May 2017
• 年：2017
• 卷：205
• 期：Complete
• 页码：292-301
• 全文大小：2929 K
• 卷排序：205

文摘

Defect engineering of ZnO and TiO2 nanocrystals is achieved by controlled mechanical activation. Lattice defects and phase transformations take place in ZnO and TiO2, respectively. Defects-probing techniques explore bulk or surface defects depending on their penetration depth. The PC efficiency of ZnO and TiO2 decreases with increasing the bulk-to-surface defect ratio.