Microwave assisted synthesis of PQ-GDYNH2-UIO-66(Zr) for improved photocatalytic removal of NOx under visible light
Copyright © 2023. Published by Elsevier B.V..
Pyrazinoquinoxaline-based graphdiyne (PQ-GDY) contains a fixed number of sp-sp2 hybridized carbon atoms and pyrazine-like sp2 hybridized N atoms. In this paper, NH2-UIO-66(Zr) on PQ-GDY substrate was successfully constructed with the help of microwave-assisted heating. PQ-GDY surface acts as a microwave antenna under microwave irradiation to rapidly absorb microwave energy and form hot spots (hot spot effect), which facilitates the formation of well-dispersed NH2-UIO-66(Zr) with good crystallinity. Transient absorption spectra show that high hole transport property of PQ-GDY can accelerate the migration of photogenerated holes from NH2-UIO-66(Zr) to PQ-GDY and greatly reduce the recombination rate of photogenerated electrons and holes due to the strong interaction between PQ-GDY and NH2-UIO-66(Zr). Under visible light (λ ≥ 420 nm), PQ-GDYNH2-UIO-66(Zr) shows high photocatalytic stability and high NOx removal rate up to 74%, which is 44% higher than that of primitive NH2-UIO-66(Zr). At the same time, it inhibits the formation of toxic by-products (NO2) and limits its concentration to a low level.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:134 |
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| Enthalten in: |
Journal of environmental sciences (China) - 134(2023) vom: 01. Dez., Seite 126-137 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Yang, Qingyu [VerfasserIn] |
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| Links: |
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| Themen: |
7440-44-0 |
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| Anmerkungen: |
Date Completed 08.09.2023 Date Revised 08.09.2023 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.jes.2023.01.020 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM361711743 |
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| 245 | 1 | 0 | |a Microwave assisted synthesis of PQ-GDYNH2-UIO-66(Zr) for improved photocatalytic removal of NOx under visible light |
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| 520 | |a Copyright © 2023. Published by Elsevier B.V. | ||
| 520 | |a Pyrazinoquinoxaline-based graphdiyne (PQ-GDY) contains a fixed number of sp-sp2 hybridized carbon atoms and pyrazine-like sp2 hybridized N atoms. In this paper, NH2-UIO-66(Zr) on PQ-GDY substrate was successfully constructed with the help of microwave-assisted heating. PQ-GDY surface acts as a microwave antenna under microwave irradiation to rapidly absorb microwave energy and form hot spots (hot spot effect), which facilitates the formation of well-dispersed NH2-UIO-66(Zr) with good crystallinity. Transient absorption spectra show that high hole transport property of PQ-GDY can accelerate the migration of photogenerated holes from NH2-UIO-66(Zr) to PQ-GDY and greatly reduce the recombination rate of photogenerated electrons and holes due to the strong interaction between PQ-GDY and NH2-UIO-66(Zr). Under visible light (λ ≥ 420 nm), PQ-GDYNH2-UIO-66(Zr) shows high photocatalytic stability and high NOx removal rate up to 74%, which is 44% higher than that of primitive NH2-UIO-66(Zr). At the same time, it inhibits the formation of toxic by-products (NO2) and limits its concentration to a low level | ||
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| 650 | 4 | |a Metal-organic backbone | |
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| 700 | 1 | |a Liang, Rui |e verfasserin |4 aut | |
| 700 | 1 | |a Gao, Lei |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Shao |e verfasserin |4 aut | |
| 700 | 1 | |a Jia, Junfen |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Yiran |e verfasserin |4 aut | |
| 700 | 1 | |a Lyv, Rundong |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Guisheng |e verfasserin |4 aut | |
| 700 | 1 | |a Xiao, Shengxiong |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Dieqing |e verfasserin |4 aut | |
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