Enhancing photocatalytic performance by constructing ultrafine TiO2 nanorods g-C3N4 nanosheets heterojunction for water treatment

doi:10.1016/j.scib.2018.04.002

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	Enhancing photocatalytic performance by constructing ultrafine TiO2 nanorods g-C3N4 nanosheets heterojunction for water treatment
	Luan, S. L.; Qu, D.; An, L.; Jiang, W. S.; Gaob, X.; Hua, S. X.; Miao, X.; Wen, Y. J.; Sun, Z. C.
	2018
发表期刊	Science Bulletin
ISSN	2095-9273
卷号	63 期号:11 页码:683-690
摘要	Photocatalysis is considered to be a clean, green and efficient method to purify water. In this report, we first developed a highly efficient ultrafine TiO2 nanorods/g-C3N4 nanosheets (TiO2 NR/CN NS) composites via a simple hydrothermal method. Tiny TiO2 nanorods (diameter: similar to 1.5 nm and length: similar to 8.3 nm) were first loaded in situ on the CN NS by adding graphitic carbon nitride (g-C3N4) to the reaction solution. The TiO2 NR/CN NS composites present high charge separation efficiency and broader light absorbance than P25 TiO2. Furthermore, we illustrate that the TiO2 NR/CN NS catalyst possesses high performance for the photocatalytic degradation of the common and stubborn pollutants in water, such as the rhodamine B (RhB) dye and phenol. Under visible light (lambda > 420 nm) irradiation, the apparent rate of the TiO2 NR/CN NR is 172 and 41 times higher than that of the P25 TiO2 and TiO2 NR, respectively. Additionally, we speculated that the heterojunction formed between TiO2 NR and CN NS, which is the basis for the experiments we have designed and the corresponding results. We demonstrated that reactive oxidative species such as superoxide anion radical and holes play critical roles in the degradation, and the hydroxyl radical contributes nothing to the degradation. (C) 2018 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved.
关键词	Heterojunction Photocatalyst TiO2 nanorods g-C3N4 nanosheets Water treatment graphitic carbon nitride 001 active facets titanium-dioxide band-structure mechanisms surfaces strategy g-c3n4 robust Science & Technology - Other Topics
DOI	10.1016/j.scib.2018.04.002
收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/60977
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Luan, S. L.,Qu, D.,An, L.,et al. Enhancing photocatalytic performance by constructing ultrafine TiO2 nanorods g-C3N4 nanosheets heterojunction for water treatment[J]. Science Bulletin,2018,63(11):683-690.
APA	Luan, S. L..,Qu, D..,An, L..,Jiang, W. S..,Gaob, X..,...&Sun, Z. C..(2018).Enhancing photocatalytic performance by constructing ultrafine TiO2 nanorods g-C3N4 nanosheets heterojunction for water treatment.Science Bulletin,63(11),683-690.
MLA	Luan, S. L.,et al."Enhancing photocatalytic performance by constructing ultrafine TiO2 nanorods g-C3N4 nanosheets heterojunction for water treatment".Science Bulletin 63.11(2018):683-690.

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