Isotypic heterojunction based on Fe-doped and terephthalaldehyde-modified carbon nitride for improving photocatalytic degradation with simultaneous hydrogen production
| Autor: | Lei Tian, Xun-Heng Jiang, Peng Chen, Jian-Ping Zou, Daishe Wu, Hui Zeng, Ling-Ling Zheng, Zhang Longshuai, Ying Chen, Li-Sha Chen, Fan Yu |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Heterojunction 02 engineering and technology General Chemistry Nitride 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Catalysis chemistry.chemical_compound chemistry Chemical engineering Photocatalysis Hydroxyl radical 0210 nano-technology Photodegradation Carbon nitride Hydrogen production |
| Zdroj: | Chinese Chemical Letters. 32:2782-2786 |
| ISSN: | 1001-8417 |
| Popis: | To achieve an efficient photocatalytic for clean energy production and environmental remediation, the highly active Fe-doped and terephthalaldehyde-modified carbon nitride (Fe-CN/NTE) isotypic heterojunction photocatalyst is constructed via a simple annealing method for degradation of organic pollutants with simultaneous resource recovery. The Fe-CN/NTE catalyst exhibits a 93% removal rate of p-nitrophenol (4-NP) and a 1.72 mmol/g H2 evolution rate in 2 h simultaneously under visible light irradiation, which are higher than those of pristine CN, Fe-CN, and NTE, respectively. Photoelectrochemical tests show that the excellent photocatalytic performance of Fe-CN/NTE comes from the improved migration, transportation, and separation of photoinduced charge carriers and expanded light-harvesting range. Moreover, hydroxyl radical ( OH), electron (e−), and hole (h+) are the main active species and the rational mechanism of 4-NP photodegradation was proposed based on scavenger measurements and liquid chromatography-mass spectrometry (LC–MS), respectively. Isotypic heterojunction Fe-CN/NTE photocatalyst possesses excellent stability in the H2 evolution and 4-NP degradation during five-run cycle tests, posing as a promising candidate in practical works for organic pollution and energy challenges. |
| Databáze: | OpenAIRE |
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