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Photocatalytic activity of N-TiO2/O-doped N vacancy g-C3N4 and the intermediates toxicity evaluation under tetracycline hydrochloride and Cr(VI) coexistence environment
Abstract
Abstract In this study, N-TiO2/O-doped N vacancy g-C3N4 was synthesized by the solvothermal method. The optimized photocatalyst N-TiO2/CNONV-2 has excellent photocatalytic activity, and it can reach about 3 times of tetracycline hydrochloride (TC−HCl) degradation rate and 41 times of Cr(VI) reduction rate comparing with N vacancy g-C3N4. Meanwhile, N-TiO2/CNONV-2 exhibited excellent photocatalytic activity and chemical stability under TC−HCl and Cr(VI) coexistence environment. The enhancement photocatalytic activity mechanism of N-TiO2/CNONV-2 is that Z-scheme heterojunctions accelerate the separation of electrons and holes, while mainly O2– and h+ attack TC−HCl and e– reduces Cr(VI) under TC−HCl and Cr(VI) coexistence environment. The influence of environmental factors (pH, organic matter, and inorganic salt) on the photocatalytic activity of N-TiO2/CNONV-2 under TC−HCl and Cr(VI) coexistence environment was studied. Furthermore, the toxicity of the intermediates was evaluated by quantitative structure-activity relationship (QSAR) prediction. The results demonstrated that the toxicity of TC intermediates can be degraded into low level over N-TiO2/CNONV-2.
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Cites
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
Metal-free efficient photocatalyst for stable visible water splitting via a two-electron pathway
Liu, J., Liu, Y., Liu, N., Han, Y., Zhang, X., Huang, H., Lifshitz, Y., Lee, S.-T., Zhong, J., & Kang, Z. (2015) · Science · doi:10.1126/science.aaa3145 · Cited by 4,468
Photoinduced charge transfer processes in solar photocatalysis based on modified TiO 2
Park, H., Kim, H.-I., Moon, G.-H., & Choi, W. (2016) · Energy & Environmental Science · doi:10.1039/c5ee02575c · Cited by 582
Zhang, G., He, X., Nadagouda, M. N., E. O'Shea, K., & Dionysiou, D. D. (2015) · Water Research · doi:10.1016/j.watres.2015.01.011 · Cited by 128
Cited by
He, S., Yan, C., Chen, X.-Z., Wang, Z., Ouyang, T., Guo, M.-L., & Liu, Z.-Q. (2020) · Applied Catalysis B: Environmental · doi:10.1016/j.apcatb.2020.119138 · Cited by 281
Metadata
- Authors
- Wang, Y., Rao, L., Wang, P., Shi, Z., & Zhang, L.
- Venue
- Applied Catalysis B: Environmental
- Publisher
- Elsevier BV
- Published
- 2020-03
- Volume
- 262
- Pages
- 118308
- ISSN
- 0926-3373 (ISSN-L)
- OpenAlex
- W2980664311
- Cited by
- 560
- References
- 4
- FWCI
- 14.38
- Type
- journal article
- Language
- en
- Open access
- closed
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- Wang, Y., Rao, L., Wang, P., Shi, Z., & Zhang, L. (2020). Photocatalytic activity of N-TiO2/O-doped N vacancy g-C3N4 and the intermediates toxicity evaluation under tetracycline hydrochloride and Cr(VI) coexistence environment. Applied Catalysis B: Environmental. https://doi.org/10.1016/j.apcatb.2019.118308
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