Facile one-step hydrothermal synthesis toward strongly coupled TiO₂/graphene quantum dots photocatalysts for efficient hydrogen evolution

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• 作者：Shixiong Min^a ; ^{sxmin@nun.edu.cn} ; Jianhua Hou^a ; Yonggang Lei^a ; Xiaohua Ma^a ; Gongxuan Lu^b
• 关键词：TiO2 ; Graphene quantum dots ; Hydrothermal synthesis ; Photocatalyst ; Hydrogen evolution
• 刊名：Applied Surface Science
• 出版年：2017
• 出版时间：28 February 2017
• 年：2017
• 卷：396
• 期：Complete
• 页码：1375-1382
• 全文大小：2417 K
• 卷排序：396

文摘

TiO2/GQDs composites were prepared by a facile one-step hydrothermal method. GQDs were strongly coupled onto the surface of TiO2 nanoparticles by this method. The TiO2/GQDs showed enhanced light absorption and charge separation efficiency. The TiO2/GQDs exhibited higher photocatalytic H2 evolution activity than pure TiO2. GQDs play synergistic roles by acting as both photosensitizer and electron acceptor.