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| 科研成果 |
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| 论文题目： |
Facile Construction of Metal-Free g-C3N4 Isotype Heterojunction with Highly Enhanced Visible-light Photocatalytic Performance |
| 第一作者： |
Yuan MZ(苑明哲);Lv HQ(吕海钦);Chen, Zhen;Zhou, Guofu;Chen ZH(陈志鸿);Wang, Xin |
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| 发表刊物： |
CHEMISTRYSELECT |
| 发表年度： |
2017 |
| 卷,期,页： |
2,24,6970-6978 |
| 论文出处： |
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| 论文摘要： |
Carbon Nitride is considered as a promising photocatalyst material because of its unique properties such as environment-friendly, suitable band gap and high stability. However, the photocatalytic activity of pristine g-C3N4 was greatly hindered by the recombination of photo-generated electron-hole pairs. In this work, we provide an alternative method to address this problem by the construction of g-C3N4 isotype heterojunction (CNH-T/CNH-U) structure, which was successfully synthesized by a facile protonation assisted hydrothermal method. Under the irradiation of visible light (lambda > 420nm), the CNH-T/CNH-U isotype heterojunction photocatalyst displays much higher photodegradation activity of organic dyes degradation and H-2-production activity than the pure CNH-T or CNH-U sample. This remarkably improved photocatalytic performance is attributed to the successful construction of CNH-T/CNH-U isotype heterojunction associated by protonation, which results in larger surface area and the more efficient separation of photo-generated electron-hole pairs, further investigated by electron paramagnetic resonance, photoluminescence, photocurrent measurement, and a series of active species trapping experiments. |
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