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Activation of graphitic carbon nitride (g-C3N4) by alkaline hydrothermal treatment for photocatalytic NO oxidation in gas phase
Abstract
Photocatalytic activity of graphitic carbon nitride (g-C3N4) was significantly improved by an alkaline hydrothermal treatment. The specific surface area of g-C3N4 obtained by heating melamine at 550 °C was only 7.7 m2 g−1, which was too small for it to be utilized as a catalyst for air purification. By the hydrothermal treatment with NaOH solution at 90–150 °C, the surface area was increased up to 65 m2 g−1, and the oxidation rate of nitrogen oxide (NO) under visible light (380 < λ < 480 nm) was increased by 8.6 times. XRD, ESR, elemental analysis and electron microscopy showed that unstable domains of not-well-ordered carbon nitride were removed by hydrolysis to form a mesoporous structure with a higher surface area. Deactivation of g-C3N4 was not observed during the experimental period, although a small part of carbon nitride was decomposed by self-oxidation.
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Cites
Environmental applications of semiconductor photocatalysis
Hoffmann, M. R., Martin, S. T., Choi, W., & Bahnemann, D. W. (1995) · Chemical Reviews · doi:10.1021/cr00033a004 · Cited by 18,495
Cui, Y., Ding, Z., Liu, P., Antonietti, M., Fu, X., & Wang, X. (2012) · Phys. Chem. Chem. Phys. · doi:10.1039/c1cp22820j · Cited by 585
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Ong, W.-J., Tan, L.-L., Ng, Y. H., Yong, S.-T., & Chai, S.-P. (2016) · Chemical Reviews · doi:10.1021/acs.chemrev.6b00075 · Cited by 7,147
Tong, Z., Yang, D., Shi, J., Nan, Y., Sun, Y., & Jiang, Z. (2015) · ACS Applied Materials & Interfaces · doi:10.1021/acsami.5b09503 · Cited by 431
Zheng, Q., Durkin, D. P., Elenewski, J. E., Sun, Y., Banek, N. A., Hua, L., Chen, H., Wagner, M. J., Zhang, W., & Shuai, D. (2016) · Environmental Science & Technology · doi:10.1021/acs.est.6b02579 · Cited by 328
Metadata
- Authors
- Sano, T., Tsutsui, S., Koike, K., Hirakawa, T., Teramoto, Y., Negishi, N., & Takeuchi, K.
- Venue
- Journal of Materials Chemistry A
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2013
- Volume
- 1
- Issue
- 21
- Pages
- 6489
- ISSN
- 2050-7488 (ISSN-L)
- 2050-7496
- OpenAlex
- W2070739327
- Cited by
- 391
- References
- 2
- FWCI
- 11.06
- Type
- journal article
- Language
- en
- Open access
- closed
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- Sano, T., Tsutsui, S., Koike, K., Hirakawa, T., Teramoto, Y., Negishi, N., & Takeuchi, K. (2013). Activation of graphitic carbon nitride (g-C3N4) by alkaline hydrothermal treatment for photocatalytic NO oxidation in gas phase. Journal of Materials Chemistry A. https://doi.org/10.1039/c3ta10472a
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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