Decoration of TiO₂ nanotube arrays by graphitic-C₃N₄ quantum dots with improved photoelectrocatalytic performance

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• 作者：Bo Sun^a ; Na Lu^b ; ^{luna@dlut.edu.cn} ; Yan Su^a ; ^{susu@dlut.edu.cn} ; Hongtao Yu^c ; ^{yuhongtao@dlut.edu.cn} ; Xiangyu Meng^a ; Zhanming Gao^a
• 关键词：TiO2 nanotube arrays ; g-C3N4 quantum dots ; Charge separation ; Optical absorption ; Photoelectrocatalytic performance
• 刊名：Applied Surface Science
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：394
• 期：Complete
• 页码：479-487
• 全文大小：3251 K
• 卷排序：394

文摘

TiO2 nanotube arrays/graphitic-C3N4 quantum dots heterojunction was prepared via a facile dipping method. The optimized dipping duration and concentration of heterojunction were investigated. The prepared heterojunction extends optical absorption and reduces the recombination of charge carriers. The photocurrent generated by the optimal g-C3N4 QDs/TNTAs photoanode is 4.3 times that of pristine TNTAs. 98.6% of phenol is degraded in 120 min and the degradation rate is 4.9 times as great as that of pristine TNTAs.