Chinese Journal of Catalysis ›› 2024, Vol. 67: 124-134.DOI: 10.1016/S1872-2067(24)60149-X
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Jiafa Chena,b, Peng Baia,b, Shibo Yuana,b, Yi Hea,b, Zifan Niua,b, Yicheng Zhaoa,b,d(), Yongdan Lic
Received:
2024-07-29
Accepted:
2024-09-19
Online:
2024-11-30
Published:
2024-11-30
Contact:
Yicheng Zhao
Supported by:
Jiafa Chen, Peng Bai, Shibo Yuan, Yi He, Zifan Niu, Yicheng Zhao, Yongdan Li. LSPR-assisted W18O49/ZnO S-scheme heterojunction for efficient photocatalytic CO2 N-formylation of aniline[J]. Chinese Journal of Catalysis, 2024, 67: 124-134.
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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(24)60149-X
Fig. 2. SEM images of ZnO (a), W18O49 (b) and 30WZ composite (c). HRTEM image (d), SAED pattern (e) and STEM image and EDX elemental mappings (f) of 30WZ composite.
Fig. 3. (a) Aniline conversion and FA selectivity over different samples after 1 h reaction. (b) Mass spectra of the products with 12CO2 and 13CO2 as the feedstocks over 30WZ composite. (c) Aniline conversion and FA selectivity over 30WZ composite as a function of reaction time. (d) Stability of 30WZ composite during five 5-h reaction cycles.
Entry | Substrate | Product | Conversion (%) | Selectivity (%) |
---|---|---|---|---|
1 | ![]() | ![]() | 99.1 | 100 |
2 | ![]() | ![]() | 94.5 | 98.3 |
3 | ![]() | ![]() | 86.8 | 93.9 |
4 | ![]() | ![]() | 99.1 | 97.3 |
5 | ![]() | ![]() | 100 | 99.4 |
6 | ![]() | ![]() | 63.1 | 97.6 |
7 | ![]() | ![]() | 76.9 | 96.6 |
8 | ![]() | ![]() | 95.1 | 100 |
9 | ![]() | ![]() | 100 | 97.0 |
10 | ![]() | ![]() | 100 | 100 |
11 | ![]() | ![]() | 100 | 93.6 |
12 | ![]() | ![]() | 99.5 | 100 |
Table 1 Photocatalytic N-formylation of various amines with CO2 over 30WZ.
Entry | Substrate | Product | Conversion (%) | Selectivity (%) |
---|---|---|---|---|
1 | ![]() | ![]() | 99.1 | 100 |
2 | ![]() | ![]() | 94.5 | 98.3 |
3 | ![]() | ![]() | 86.8 | 93.9 |
4 | ![]() | ![]() | 99.1 | 97.3 |
5 | ![]() | ![]() | 100 | 99.4 |
6 | ![]() | ![]() | 63.1 | 97.6 |
7 | ![]() | ![]() | 76.9 | 96.6 |
8 | ![]() | ![]() | 95.1 | 100 |
9 | ![]() | ![]() | 100 | 97.0 |
10 | ![]() | ![]() | 100 | 100 |
11 | ![]() | ![]() | 100 | 93.6 |
12 | ![]() | ![]() | 99.5 | 100 |
Fig. 5. Calculated Fermi levels and work functions for ZnO (101) face (a) and W18O49 (010) face (b). High-resolution XPS spectra of Zn 2p (c) and W 4f (d) of the samples.
Fig. 7. (a) Aniline conversion and FA selectivity over 30WZ composite after 1 h reaction under various conditions. (b) In situ FTIR spectra during the reaction over 30WZ composite. (c) In situ EPR spectra after 10 min reaction over 30WZ composite in the dark and under light irradiation.
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