Photocatalytic Activities of g-C3N4 (CN) Treated with Nitric Acid Vapor for the Degradation of Pollutants in Wastewater
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Synthesis of the Photocatalysts
2.3. Characterization
2.4. Photocatalytic Performance Tests
2.4.1. Photocatalytic Experiments
2.4.2. Determination of Active Species during Photocatalytic Degradation
3. Results and Discussion
3.1. Characterization of the As-Prepared Photocatalysts
3.1.1. Structure and Morphology Characterizations
3.1.2. Optical Properties of the As-Prepared Photocatalysts
3.2. Photocatalytic Activity and Stability
3.3. Discussion of Underlying Photocatalyst Mechanisms
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
- Singh, K.; Nowotny, J.; Thangadurai, V. Amphoteric oxide semiconductors for energy conversion devices: A tutorial review. Chem. Soc. Rev. 2013, 42, 1961–1972. [Google Scholar] [CrossRef] [PubMed]
- Tong, H.; Ouyang, S.X.; Bi, Y.P.; Umezawa, N.; Oshikiri, M.; Ye, J.H. Nano-photocatalytic materials: Possibilities and challenges. Adv. Mater. 2012, 24, 229–251. [Google Scholar] [CrossRef]
- Kudo, A.; Miseki, Y. Heterogeneous photocatalyst materials for water splitting. Chem. Soc. Rev. 2009, 38, 253–278. [Google Scholar] [CrossRef] [PubMed]
- Zhang, J.; Chen, Y.; Wang, X. Two-dimensional covalent carbon nitride nanosheets: Synthesis, functionalization, and applications. Energy Environ. Sci. 2015, 8, 3092–3108. [Google Scholar] [CrossRef]
- Reddy, P.A.K.; Reddy, P.V.L.; Kwon, E.; Kim, K.-H.; Akter, T.; Kalagara, S. Recent advances in photocatalytic treatment of pollutants in aqueous media. Environ. Int. 2016, 91, 94–103. [Google Scholar] [CrossRef] [PubMed]
- Xiao, J.; Xie, Y.; Cao, H.; Wang, Y.; Zhao, Z. g-C3N4–triggered super synergy between photocatalysis and ozonation attributed to promoted OH generation. Catal. Commun. 2015, 66, 10–14. [Google Scholar] [CrossRef]
- Weon, S.; Choi, W. TiO2 nanotubes with open channels as deactivation-resistant photocatalyst for the degradation of volatile organic compounds. Environ. Sci. Technol. 2016, 50, 2556–2563. [Google Scholar] [CrossRef]
- Fei, J.; Li, J. Controlled preparation of porous TiO2-Ag nanostructures through supramolecular assembly for plasmon-enhanced photocatalysis. Adv. Mater. 2015, 27, 314–319. [Google Scholar] [CrossRef]
- Pu, C.C.; Wan, J.; Liu, E.Z.; Yin, Y.C.; Li, J.; Ma, Y.N.; Fan, J.; Hu, X.Y. Two-dimensional porous architecture of protonated GCN and reduced graphene oxide via electrostatic self-assembly strategy for high photocatalytic hydrogen evolution under visible light. Appl. Surf. Sci. 2017, 399, 139–150. [Google Scholar] [CrossRef]
- Zhu, B.; Zhang, J.; Jiang, C.; Cheng, B.; Yu, J. First principle investigation of halogen-doped monolayer g-C3N4 photocatalyst. Appl. Catal. B Environ. 2017, 207, 27–34. [Google Scholar] [CrossRef]
- Wen, J.Q.; Xie, J.; Chen, X.B.; Li, X. A review on g-C3N4-based photocatalysts. Appl. Surf. Sci. 2017, 391, 72–123. [Google Scholar] [CrossRef]
- Zheng, Y.; Zhang, Z.; Li, C.; Proulx, S. Surface hydroxylation of graphitic carbon nitride: Enhanced visible light photocatalytic activity. Mater. Res. Bull. 2016, 84, 46–56. [Google Scholar] [CrossRef]
- Ong, W.J.; Tan, L.L.; Ng, Y.H.; Yong, S.T.; Chai, S.P. Graphitic carbon nitride (g-C3N4)-based photocatalysts for artificial photosynthesis and environmental remediation: Are we a step closer to achieving sustainability? Chem. Rev. 2016, 116, 7159–7329. [Google Scholar] [CrossRef]
- Shi, L.; Chang, K.; Zhang, H.B.; Hai, X.; Yang, L.Q.; Wang, T.; Ye, J.H. Drastic enhancement of photocatalytic activities over phosphoric acid protonated porous g-C3N4 nanosheets under visible light. Small 2016, 12, 4431–4439. [Google Scholar] [CrossRef]
- Yu, X.; Ng, S.F.; Putri, L.K.; Tan, L.L.; Mohamed, A.R.; Ong, W.J. Point-defect engineering: Leveraging imperfections in graphitic carbon nitride (g-C3N4) photocatalysts toward artificial photosynthesis. Small 2021, 17, 2006851. [Google Scholar] [CrossRef]
- Hu, J.S.; Zhang, P.F.; An, W.J.; Liu, L.; Liang, Y.H.; Cui, W.Q. In-situ Fe-doped g-C3N4 heterogeneous catalyst via photocatalysis-Fenton reaction with enriched photocatalytic performance for removal of complex wastewater. Appl. Catal. B Environ. 2019, 245, 130–142. [Google Scholar] [CrossRef]
- Jiang, L.B.; Yuan, X.Z.; Pan, Y.; Liang, J.; Zeng, G.M.; Wu, Z.B.; Wang, H. Doping of graphitic carbon nitride for photocatalysis: A review. Appl. Catal. B Environ. 2017, 217, 388–406. [Google Scholar] [CrossRef]
- Guo, S.E.; Tang, Y.Q.; Xie, Y.; Tian, C.G.; Feng, Q.M.; Zhou, W.; Jiang, B.J. P-doped tubular g-C3N4 with surface carbon defects: Universal synthesis and enhanced visible-light photocatalytic hydrogen production. Appl. Catal. B Environ. 2017, 218, 664–671. [Google Scholar] [CrossRef]
- Bao, Y.; Chen, K. Novel Z-scheme BiOBr/reduced graphene oxide/protonated g-C3N4 photocatalyst: Synthesis, characterization, visible light photocatalytic activity and mechanism. Appl. Surf. Sci. 2018, 437, 51–61. [Google Scholar] [CrossRef]
- Tan, Y.; Shu, Z.; Zhou, J.; Li, T.; Wang, W.; Zhao, Z. One-step synthesis of nanostructured g-C3N4/TiO2 composite for highly enhanced visible-light photocatalytic H2 evolution. Appl. Catal. B Environ. 2018, 230, 260–268. [Google Scholar] [CrossRef]
- Zhu, W.; Gao, X.; Li, Q.; Li, H.; Chao, Y.; Li, M.; Mahurin, S.M.; Li, H.; Zhu, H.; Dai, S. Controlled gas exfoliation of boron nitride into few-layered nanosheets. Angew. Chem. Int. Ed. 2016, 55, 10766–10770. [Google Scholar] [CrossRef] [PubMed]
- Zhang, J.; Chen, X.; Takanabe, K.; Maeda, K.; Domen, K.; Epping, J.D.; Fu, X.; Antonietti, M.; Wang, X. Synthesis of a carbon nitride structure for visible-light catalysis by copolymerization. Angew. Chem. Int. Ed. 2010, 49, 441–444. [Google Scholar] [CrossRef] [PubMed]
- Novoselov, K.S.; Geim, A.K.; Morozov, S.V.; Jiang, D.; Zhang, Y.; Dubonos, S.V.; Grigorieva, I.V.; Firsov, A.A. Electric field effect in atomically thin carbon films. Science 2004, 306, 666–669. [Google Scholar] [CrossRef] [PubMed] [Green Version]
- Luo, J.; Chen, Q.; Dong, X. Prominently photocatalytic performance of restacked titanate nanosheets associated with H2O2 under visible light irradiation. Powder Technol. 2015, 275, 284–289. [Google Scholar] [CrossRef]
- Chen, Q.; Luo, J.; Tao, Y.; Dong, X. Free-standing films of titanate nanosheets as efficient visible-light-driven photocatalysts for environmental application. Mater. Lett. 2015, 145, 111–114. [Google Scholar] [CrossRef]
- Dong, X.; Cheng, F. Recent development in exfoliated two-dimensional g-C3N4 nanosheets for photocatalytic applications. J. Mater. Chem. A 2015, 3, 23642–23652. [Google Scholar] [CrossRef]
- Niu, P.; Zhang, L.; Liu, G.; Cheng, H. Graphene-like carbon nitride nanosheets for improved photocatalytic activities. Adv. Funct. Mater. 2012, 22, 4763–4770. [Google Scholar] [CrossRef]
- Yan, J.; Han, X.X.; Qian, J.J.; Liu, J.Y.; Dong, X.P.; Xi, F.N. Preparation of 2D graphitic carbon nitride nanosheets by a green exfoliation approach and the enhanced photocatalytic performance. J. Mater. Sci. 2017, 52, 13091–13102. [Google Scholar] [CrossRef]
- Miao, H.; Zhang, G.W.; Hu, X.Y.; Mu, J.L.; Han, T.X.; Fan, J.; Zhu, C.; Song, L.; Bai, J.; Hou, X. A novel strategy to prepare 2D g-C3N4 nanosheets and their photoelectrochemical properties. J. Alloys Compd. 2017, 690, 669–676. [Google Scholar] [CrossRef]
- Xu, J.; Zhang, L.; Shi, R.; Zhu, Y. Chemical exfoliation of graphitic carbon nitride for efficient heterogeneous photocatalysis. J. Mater. Chem. A 2013, 1, 14766–14772. [Google Scholar] [CrossRef]
- Liu, J.; Zhang, T.; Wang, Z.; Dawson, G.; Chen, W. Simple pyrolysis of urea into graphitic carbon nitride with recyclable adsorption and photocatalytic activity. J. Mater. Chem. 2011, 38, 14398–14401. [Google Scholar] [CrossRef]
- Kang, S.F.; Zhang, L.; Yin, C.C.; Li, Y.G.; Cui, L.F.; Wang, Y.G. Fast flash frozen synthesis of holey few-layer g-C3N4 with high enhancement of photocatalytic reactive oxygen species evolution under visible light irradiation. Appl. Catal. B Environ. 2017, 211, 266–274. [Google Scholar] [CrossRef]
- Yang, Y.; Geng, L.; Guo, Y.; Meng, J.; Guo, Y. Easy dispersion and excellent visible-light photocatalytic activity of the ultrathin urea-derived g-C3N4 nanosheets. Appl. Surf. Sci. 2017, 425, 535–546. [Google Scholar] [CrossRef]
- Zhang, Y.; Zhou, Z.; Shen, Y.; Zhou, Q.; Wang, J.; Liu, A.; Liu, S.; Zhang, Y. Reversible assembly of graphitic carbon nitride 3D network for highly selective dyes absorption and regeneration. ACS Nano 2016, 10, 9036–9043. [Google Scholar] [CrossRef]
- Wang, F.L.; Chen, P.; Feng, Y.P.; Xie, Z.J.; Liu, Y.; Su, Y.H.; Zhang, Q.X.; Wang, Y.F.; Yao, K.; Lv, W.Y.; et al. Facile synthesis of N-doped carbon dots/g-C3N4 photocatalyst with enhanced visible-light photocatalytic activity for the degradation of indomethacin. Appl. Catal. B Environ. 2017, 207, 103–113. [Google Scholar] [CrossRef]
- Wang, Y.; Wang, H.; Chen, F.; Cao, F.; Zhao, X.; Meng, S.; Cui, Y. Facile synthesis of oxygen doped carbon nitride hollow microsphere for photocatalysis. Appl. Catal. B Environ. 2017, 206, 417–425. [Google Scholar] [CrossRef]
- Xiao, J.; Xie, Y.; Nawaz, F.; Jin, S.; Duan, F.; Li, M.; Cao, H. Super synergy between photocatalysis and ozonation using bulk g-C3N4 as catalyst: A potential sunlight/O3/g-C3N4 method for efficient water decontamination. Appl. Catal. B Environ. 2016, 181, 420–428. [Google Scholar] [CrossRef]
- Fan, C.; Feng, Q.; Xu, G.; Lv, J.; Zhang, Y.; Liu, J.; Qin, Y.; Wu, Y. Enhanced photocatalytic performances of ultrafine g-C3N4 nanosheets obtained by gaseous stripping with wet nitrogen. Appl. Surf. Sci. 2018, 427, 730–738. [Google Scholar] [CrossRef]
- Li, H.J.; Sun, B.W.; Sui, L.; Qian, D.J.; Chen, M. Preparation of water-dispersible porous g-C3N4 with improved photocatalytic activity by chemical oxidation. Phys. Chem. Chem. Phys. 2015, 17, 3309–3315. [Google Scholar] [CrossRef]
- Yang, X.; Qian, F.; Zou, G.; Li, M.; Lu, J.; Li, Y.; Bao, M. Facile fabrication of acidified g-C3N4/g-C3N4 hybrids with enhanced photocatalysis performance under visible light irradiation. Appl. Catal. B Environ. 2016, 193, 22–35. [Google Scholar] [CrossRef]
- Cheng, F.; Wang, H.; Dong, X. The amphoteric properties of g-C3N4 nanosheets and fabrication of their relevant heterostructure photocatalysts by an electrostatic re-assembly route. Chem. Commun. 2015, 51, 7176–7179. [Google Scholar] [CrossRef] [PubMed]
- Behera, A.; Kandi, D.; Majhi, S.M.; Martha, S.; Parida, K.M. Facile synthesis of ZnFe2O4 photocatalysts for decolourization of organic dyes under solar irradiation. Beilstein J. Nanotechnol. 2018, 9, 436–446. [Google Scholar] [CrossRef] [PubMed] [Green Version]
- Meng, S.; Ye, X.; Ning, X.; Xie, M.; Fu, X.; Chen, S. Selective oxidation of aromatic alcohols to aromatic aldehydes by BN/metal sulfide with enhanced photocatalytic activity. Appl. Catal. B: Environ. 2016, 182, 356–368. [Google Scholar] [CrossRef]
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Li, R.; Wang, B.; Wang, R. Photocatalytic Activities of g-C3N4 (CN) Treated with Nitric Acid Vapor for the Degradation of Pollutants in Wastewater. Materials 2023, 16, 2177. https://doi.org/10.3390/ma16062177
Li R, Wang B, Wang R. Photocatalytic Activities of g-C3N4 (CN) Treated with Nitric Acid Vapor for the Degradation of Pollutants in Wastewater. Materials. 2023; 16(6):2177. https://doi.org/10.3390/ma16062177
Chicago/Turabian StyleLi, Ruishuo, Bingquan Wang, and Rui Wang. 2023. "Photocatalytic Activities of g-C3N4 (CN) Treated with Nitric Acid Vapor for the Degradation of Pollutants in Wastewater" Materials 16, no. 6: 2177. https://doi.org/10.3390/ma16062177