Achieving efficient incorporation of Π‐electrons into graphitic carbon nitride for markedly improved hydrogen generation
| Autor: | Zhiqun Lin, Zhaoming Xue, Haiwei Du, Wei Zhou, Xueqin Liu, Yupeng Yuan, Zhen Li, James Iocozzia, Dandan Wu, Jing Li |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Barbituric acid Graphitic carbon nitride 02 engineering and technology General Chemistry General Medicine 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Catalysis 0104 chemical sciences chemistry.chemical_compound chemistry Chemical engineering Photocatalysis Sublimation (phase transition) 0210 nano-technology Melamine Carbon nitride Hydrogen production |
| Zdroj: | Angewandte Chemie. |
| ISSN: | 1521-3757 0044-8249 |
| DOI: | 10.1002/ange.201813117 |
| Popis: | A rapid and highly efficient strategy for introducing C into g-C3 N4 involves copolymerizing π-electron-rich barbituric acid with melamine via a facile microwave-assisted heating, thereby eliminating the issues in conventional electric furnace heating, such as the severe volatilization, owing to the mismatch of the sublimation temperatures of barbituric acid and melamine. The g-C3 N4 catalyst after optimizing the C-doping content actively generates increased amounts of H2 under visible light exposure with the highest H2 generation rate of 25.0 μmol h-1 , which is nearly 20 times above that using g-C3 N4 produced by conventional electric furnace heating of two identical monomers (1.3 μmol h-1 ). As such, the microwave-assisted heating strategy may stand out as an extremely simple route to incorporating π-electrons into g-C3 N4 with markedly improved photocatalytic performance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text