Effect of Pyrolysis Conditions on the Physicochemical Properties of Graphitic Carbon Nitride for Visible-Light-Driven Photocatalytic Degradation

• Autorzy: Kim Jeong Hyun , Ji Myeongjun , Ryu Cheol-Hui , Lee Young-In

Identyfikatory

DOI

10.24425/amm.2020.133226

• Języki publikacji: EN

Abstrakty

EN

Graphitic carbon nitride (g-C₃ N₄ ) is an attractive photocatalyst, however, its practical photocatalytic applications are still faced with huge challenges. The aim of this research is to identify the correlation between synthetic conditions and properties of the g-C₃ N₄ and derive an optimum synthesis condition for improving photocatalytic activities of the g-C₃ N₄. In this study, novel and versatile g-C₃ N₄ nanosheets were synthesized by the simple thermal pyrolysis of urea. In the synthesis process, the pyrolysis temperature and the heating rate, which can have the most significant influence on the structures and properties of g-C₃ N₄, were set as variables, and the effects were systematically investigated. When synthesized at a relatively high temperature, the amount of material being synthesized is reduced, however it has been found to represent optical properties suitable for highly efficient photo-catalyst by the increase in the thickness and defects formed in the g-C₃ N₄nanosheets. The photocatalytic degradation experiment of MB dyes indicated that the highest degradation of 95.2% after the reaction for 120 min was achieved on the g-C₃ N₄ nanosheets synthesized at 650°C.

Słowa kluczowe

EN

g-C3N4; pyrolysis; polymerization; synthesis condition; photocatalysis

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2020
• Tom: Vol. 65, iss. 3
• Strony: 1111--1116
• Opis fizyczny: Bibliogr. 18 poz., fot., rys., tab.

Twórcy

autor

Kim Jeong Hyun

• Seoul National University of Science and Technology, Dept. of Materials Science and Engineering, Seoul 01811, Republic of Korea

autor

Ji Myeongjun

• Seoul National University of Science and Technology, Dept. of Materials Science and Engineering, Seoul 01811, Republic of Korea

autor

Ryu Cheol-Hui

• Seoul National University of Science and Technology, Dept. of Materials Science and Engineering, Seoul 01811, Republic of Korea

autor

Lee Young-In

• Seoul National University of Science and Technology, Dept. of Materials Science and Engineering, Seoul 01811, Republic of Korea
• Seoul National University of Science and Technology, Institue of Powder Technology, Seoul 01811, Republic of Korea

Bibliografia

• [1] M. N. Chong, B. Jin, C. W. K. Chow, C. Saint, Water Res. 44, 2997 (2010).
• [2] I. K. Konstantinou, T. A. Albanis, Appl. Catal., B: Environ. 49, 1 (2004).
• [3] C. Chen, W. Ma, J. Zhao, Chem. Soc. Rev. 39, 4206 (2010).
• [4] M. A. Henderson, Surf. Sci. Rep. 66, 185 (2011).
• [5] M. Sachs, E. Pastor, A. Kafizas, J. R. Durrant, J. Phys. Chem. Lett. 7, 3742 (2016).
• [6] G. Fazio, L. Ferrighi, C. D. Valentin, Nano Energy 27, 673 (2016).
• [7] C. Chen, W. Ma, J. Zhao, Chem. Soc. Rev. 39, 4206 (2010).
• [8] G.-D. Lim, J.-H. Yoo, M. Ji, Y.-I. Lee, J. Alloys Compd. 806, 1060 (2019).
• [9] A. Malathi, J. Madhavan, M. Ashokkumar, P. Arunachalam, Appl. Catal., A: Gen. 555, 47 (2018).
• [10] Y. Lv, W. Yao, R. Zong, Y. Zhu, Sci. Rep. 6, 19347 (2016).
• [11] W. Xu, S. Zhu, Y. Liang, Z. Li, Z. Cui, X. Yang, A. Inoue, Sci. Rep. 5, 18125 (2015).
• [12] W.-J. Ong, L.-L. Tan, Y. H. Ng, S.-T. Yong, S.-P. Chai, Chem. Rev. 116, 7159 (2016).
• [13] J. Wen, J. Xie, X. Chen, X. Lia, Appl. Surf. Sci. 391, 72 (2017).
• [14] X. L. Wang, H. G. Yang, Appl. Catal., B: Environ. 205, 624 (2004).
• [15] H. Yoneyama, Y. Toyoguchi, H. Tamura, J. Phys. Chem. 76, 3460 (1972).
• [16] S. C. Yan, Z. S. Li, Z. G. Zou, Langmuir 25, 10397 (2009).
• [17] L. Ge, Mater. Lett. 65, 2652 (2011).
• [18] B. D. Cullity, Am. J. Phys. 25, 394 (1957).

Uwagi

EN

1. This research was supported by Basic Science Research Program through the National Research Foundation (NRF) of Korea funded by the Ministry of Education (NRF-2018R1D1A1B07048149).

PL

2. Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).