3D reticulated carbon nitride materials high-uniformly capture 0D black phosphorus as 3D/0D composites for stable and efficient photocatalytic hydrogen evolution
| Autor: | Shaobin Huang, Ting Song, Piyong Zhang, Heping Zeng, Tingting Wang, Gongchang Zeng, Atif Mossad Ali |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Fabrication Aqueous solution Renewable Energy Sustainability and the Environment business.industry Band gap 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology chemistry.chemical_compound Semiconductor Chemical engineering chemistry Quantum dot Photocatalysis General Materials Science 0210 nano-technology Absorption (electromagnetic radiation) business Carbon nitride |
| Zdroj: | Journal of Materials Chemistry A. 7:503-512 |
| ISSN: | 2050-7496 2050-7488 |
| DOI: | 10.1039/c8ta09647c |
| Popis: | Black phosphorus has recently emerged as an excellent 2D semiconductor with high charge-carrier mobility and wide tunable bandgap for photocatalysis. In this research, a simple method was developed to manufacture reticulated carbon nitride materials (CN-4N). Utilizing the self-capturing property of CN-4N to capture black phosphorus quantum dots (BQ) uniformly dispersed in aqueous solution, BQ were successfully implanted in the interior surface of CN-4N to form a unique structure instead of the normal exterior surface contact pattern. The optimized CN-4N(BQ) showed good stability and achieved an excellent hydrogen production rate of 13.83 mmol h−1 g−1, which was 3.3- and 35.5-fold higher than that of CN-4N and bulk CN (NCN), respectively. The experimental results illustrated that the greatly improved photocatalytic performance of CN-4N(BQ) was attributed to the joint actions of the abundant active sites provided by the ultra-porous structure, the excellent vis-NIR absorption capability, the spatially separated reactive sites for the redox reaction, and the greatly enhanced photoinduced electron–hole separation efficiency. This research provides novel insight for the rational fabrication of CN-based hybrids for various applications. |
| Databáze: | OpenAIRE |
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