Flower-Like BiOCl/g-C3N4 Hybrid with Oxygen Vacancies Assembled by Nanosheets: In Situ Pyrolysis Associated with Ultrasonic Process and Photocatalytic Properties
Source abstract
Abstract
Herein, a method is described for pyrolysis associated with in situ ultrasonic synthesis of flower-like p-n-type BiOCl/g-C3N4 assembled with nanosheets for enhancing the visible-light degradation of Rhodamine B (RhB). The formation process, structure, microscopic morphology, and photocatalytic activity of the samples were investigated in detail. In addition, the results of simulated visible light-driven photocatalytic experiments showed that, compared with pure g-C3N4, the BiOCl (20 wt %)/g-C3N4 composite photocatalyst exhibited better degradation ability with a maximum k value of 0.109 min−1, and the most significant total removal rate of RhB was up to 99 %, which is about ninefold in comparison with pure g-C3N4. Finally, the enhanced photocatalytic activities of the products could be attributed to the suitable band structures between the BiOCl/g-C3N4 composite with rich oxygen vacancies for the effective separation of photogenerated electron–hole pairs.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Perovskite Materials and Applications · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (14)
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1. X.J. Wang, Q. Wang, F.T. Li, W.Y. Yang, Y. Zhao, Y.J. Hao, and S.J. Liu, Novel BiOCl-C3N4 heterojunction photocatalysts: in situ preparation via an ionic-liquid-assisted solvent-thermal route and their visible-light photocatalytic activities. Chem. Eng. J. 234, 361 (2013).10.1016/j.cej.2013.08.112 ↗
2. M. Shang, W. Wang, and L. Zhang, Preparation of BiOBr lamellar structure with high photocatalytic activity by CTAB as Br source and template. J. Hazard. Mater. 167, 803 (2009).10.1016/j.jhazmat.2009.01.053 ↗
3. S.Y. Chai, Y.J. Kim, M.H. Jung, A.K. Chakraborty, D. Jung, and W. Lee, Heterojunctioned BiOCl/Bi2O3, a new visible light photocatalyst. J. Catal. 262, 144 (2009).10.1016/j.jcat.2008.12.020 ↗
4. S.W. Zhu, C.Y. Yang, F. Li, T.H. Li, M. Zhang, and W. Cao, Improved photocatalytic Bi2WO6/BiOCl heterojunctions: one-step synthesis via an ionic-liquid assisted ultrasonic method and first-principles calculations. Mol. Catal. 435, 33 (2017).10.1016/j.mcat.2017.03.016 ↗
5. S. Shamaila, A.K.L. Sajjad, F. Chen, and J.L. Zhang, WO3/BiOCl, a novel heterojunction as visible light photocatalyst. J. Colloid Interface Sci. 356, 465 (2011).10.1016/j.jcis.2011.01.015 ↗
6. Y.X. Zhu, Y. Feng, S.L. Chen, M.L. Ding, and J.F. Yao, Carbon nitride nanotube-based materials for energy and environmental applications: a review of recent progresses. J. Mater. Chem. A 8, 25626 (2020).10.1039/D0TA08892G ↗
7. W. Cai, J.Y. Tang, Y.P. Shi, H. Wang, and X.M. Jiang, Improved in situ synthesis of heterostructured 2D/2D BiOCl/g-C3N4 with enhanced dye photodegradation under visible-light illumination. ACS Omega 4, 22187 (2019).10.1021/acsomega.9b03471 ↗
8. Y. Chen, F. Wang, Y.H. Cao, F.Y. Zhang, Y.Z. Zou, Z. Huang, L.Q. Ye, and Y. Zhou, Interfacial oxygen vacancy engineered two-dimensional g-C3N4/ BiOCl heterostructures with boosted photocatalytic conversion of CO2. ACS Appl. Energy Mater. 3, 4610 (2020).10.1021/acsaem.0c00273 ↗
9. F. Wang, Y. Wang, Y. Feng, Y. Zeng, Z. Xie, Q. Zhang, Y. Su, P. Chen, Y. Liu, K. Yao, and W. Lv, Novel ternary photocatalyst of single atom-dispersed silver and carbon quantum dots co-loaded with ultrathin g-C3N4 for broad spectrum photocatalytic degradation of naproxen. Appl. Catal. B: Environ. 220, 290 (2018).10.1016/j.apcatb.2017.08.049 ↗
10. Y.J. Yuan, Z.K. Shen, S.T. Wu, Y.B. Su, L. Pei, Z.G. Ji, M.Y. Ding, W.F. Bai, Y.F. Chen, Z.T. Yu, and Z.G. Zou, Liquid exfoliation of g-C3N4 nanosheets to construct 2D–2D MoS2/g-C3N4 photocatalyst for enhanced photocatalytic H2 production activity. Appl. Catal. B 246, 120 (2019).10.1016/j.apcatb.2019.01.043 ↗
11. S.Q. Liu, Y.Y. Liu, G.P. Dai, X.Q. Bao, N. Huang, R. Peng, and Y. Zhou, Synthesis and characterization of novel Bi2S3/BiOCl/g-C3N4 composite with effificient visible-light photocatalytic activity. Mater. Lett. 241, 190 (2019).10.1016/j.matlet.2019.01.087 ↗
12. A. Kumar, A. Kumar, G. Sharma, A.H. Al-Muhtaseb, M. Naushad, A.A. Ghfar, and F.J. Stadler, Quaternary magnetic BiOCl/g-C3N4/Cu2O/Fe3O4 nano-junction for visible light and solar powered degradation of sulfamethoxazole from aqueous environment. Chem. Eng. J. 334, 462 (2018).10.1016/j.cej.2017.10.049 ↗
13. X.L. Zhang, D. An, D.X. Feng, F.B. Liang, Z. Chen, W.M. Liu, Z.Z. Yang, and M. Xian, In situ surfactant-free synthesis of ultrathin BiOCl/g-C3N4 nanosheets for enhanced visible-light photodegradation of rhodamine B. Appl. Surf. Sci. 476, 706 (2019).10.1016/j.apsusc.2019.01.147 ↗
14. X.N. Hu, Y. Zhang, B.J. Wang, H.J. Li, and W.B. Dong, Novel g-C3N4/BiOClxI1-x nanosheets with rich oxygen vacancies for enhanced photocatalytic degradation of organic contaminants under visible and simulated solar light. Appl. Catal. B 256, 117789 (2019).10.1016/j.apcatb.2019.117789 ↗