TiO2/S-Doped Carbons Hybrids: Analysis of Their Interfacial and Surface Features
Abstract
:1. Introduction
2. Results and Discussion
3. Experimental Section
3.1. Materials
3.2. Surface Characterization
3.2.1. Porosity and Texture
3.2.2. Surface Chemistry and Bulk Chemical Features
3.2.3. Optical Features/Band Gap Estimation
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Sample Availability: Samples of the compounds are not available from the authors. |
Energy, eV | Bond Assignment | T/BAX | T/BAX-S | T/C1 | T/C1-S | T/C2 | T/C2-S |
---|---|---|---|---|---|---|---|
C 1s | 66.4 | 72.6 | 66.5 | 60.7 | 55.7 | 72.0 | |
284.8 | C-(C, S) (graphitic carbon) | 63.1 | 50.9 | 49.3 | 28.4 | 38.1 | 57.8 |
286.1 | C-O, C-H (phenolic, alcoholic, etheric) | 24.1 | 35.5 | 34.4 | 51.7 | 38.3 | 19.3 |
287.0 | C=O (carbonyl or quinone) | 10.0 | 9.3 | 11.4 | 15.8 | 15.6 | 12.7 |
288.0 | O-C=O (carboxyl or ester) | 2.8 | 4.3 | 4.9 | 4.1 | 4.6 | 7.8 |
289.0 | π-π * | --- | --- | --- | --- | 3.4 | 2.4 |
O 1s | 26.1 | 21.9 | 25.7 | 30.0 | 32.4 | 20.2 | |
530.9 | TiO2 | 63.9 | 53.2 | 55.9 | 59.2 | 60.0 | 63.1 |
532.4 | O=C/O=S (in carboxyl/carbonyl or sulfoxides/sulfones) | 12.8 | 18.4 | 14.5 | 11.7 | 13.2 | 20.5 |
533.5 | O-C/O-S (in phenol/epoxy or thioesters/sulfonic) | 14.8 | 19.6 | 17.6 | 19.6 | 18.1 | 16.4 |
534.5 | -O- (in water or chemisorbed oxygen species) | 8.5 | 8.8 | 12.0 | 9.5 | 8.7 | --- |
S 2p3/2 | 0.3 | 0.5 | 1.1 | 1.6 | |||
163.4 | Ti-S | --- | --- | 41.5 | 44.0 | 20.1 | 75.0 |
164.6 | R-S-S-, C-S-C (in bisulfides/thiophenes configurations) | --- | --- | --- | --- | 10.0 | 8.9 |
166.8 | C-S-O, R2-S=O/R-SO2-R (in sulfoxides, sulfones) | --- | --- | 13.4 | |||
168.8 | Sulfonic acid | --- | --- | 58.5 | 56.0 | 56.5 | 16.1 |
Ti 2p3/2 | 7.5 | 5.5 | 7.5 | 8.8 | 10.8 | 6.2 | |
459.5 | TiO2 | 100 | 100 | 100 | 100 | 100 | 100 |
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Bandosz, T.J.; Policicchio, A.; Florent, M.; Poon, P.S.; Matos, J. TiO2/S-Doped Carbons Hybrids: Analysis of Their Interfacial and Surface Features. Molecules 2019, 24, 3585. https://doi.org/10.3390/molecules24193585
Bandosz TJ, Policicchio A, Florent M, Poon PS, Matos J. TiO2/S-Doped Carbons Hybrids: Analysis of Their Interfacial and Surface Features. Molecules. 2019; 24(19):3585. https://doi.org/10.3390/molecules24193585
Chicago/Turabian StyleBandosz, Teresa J., Alfonso Policicchio, Marc Florent, Po S. Poon, and Juan Matos. 2019. "TiO2/S-Doped Carbons Hybrids: Analysis of Their Interfacial and Surface Features" Molecules 24, no. 19: 3585. https://doi.org/10.3390/molecules24193585