One-Step Hydrothermal Synthesis of 1T@2H MoS₂ for Enhanced Photocatalytic Degradation Performance of Methyl Blue

Abstract:

Photocatalytic technology is widely used in water purification because of its environmental protection, high efficiency and energy saving. Therefore, it is extremely important for the selection and preparation of specific semiconductor materials used in the field of photocatalysis. In this work, 1T@2H MoS₂ nanosheets were fabricated by simple hydrothermal method, and the photocatalytic property of as-prepared 1T@2H MoS₂ were investigated by the photo-degradation of methylene blue (MB) water solutions under visible light irradiation via 2H MoS₂.The results indicated that compared to 2H MoS₂, the 1T@2H MoS₂ exhibited more excellent photocatalytic degradation property. After 150 minutes of irradiation under visible light, 1T@2H MoS₂ had a removal rate of 98% for MB, and 2H MoS₂ eventually reached 19%. The enhancement photocatalytic property of 1T@2H MoS₂ could be attributed to the reduced band gap energy of the hybrid-nanosheets and the increased in electron migration speed.

• Periodical: Materials Science Forum (Volume 993)
• Pages: 1496-1501
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.993.1496
• Online since: May 2020
• Authors: Dong Dong Li, Yan Hua Lei*, Ning Tan, Tao Liu, Xue Ting Chang, Run Hua Fan, Guan Hui Gao
• Keywords: 1T@2H MoS₂, Hydrothermal Method, Photocatalytic Property

References

[1] Q.L. Ma, Y.F. Yu, M. Sindoro, A.G. Fane, R. Wang, H. Zhang, Carbon‐Based Functional Materials Derived from Waste for Water Remediation and Energy Storage, Adv. Mater. 29 (2017)1605361–1605379.

DOI: 10.1002/adma.201605361

[2] M.A. Shannon, P.W. Bohn, M. Elimelech, J.G. Georgiadis, B.J. Marinas, A.M. Mayes, Science and technology for water purification in the coming decades, Nature. 452 (2008) 301–310.

DOI: 10.1038/nature06599

[3] J. Tian, Y.H. Leng, Z.H. Zhao, Y. Xia, Y.H. Sang, P. Hao, J. Zhan, M.C. Li, H. Liu, Carbon quantum dots/hydrogenated TiO2 nanobelt heterostructures and their broad spectrum photocatalytic properties under UV, visible, and near-infrared irradiation, Nano Energy. 11 (2015) 419–427.

DOI: 10.1016/j.nanoen.2014.10.025

[4] S.A. Mozaffari, M. Ranjbar, E. Kouhestanian, H.S. Amoli, M.H. Armanmehr, An investigation on the effect of electrodeposited nanostructured ZnO on the electron transfer process efficiency of TiO2based DSSC, Mater. Sci. Semicond. Process. 40 (2015) 285-292.

DOI: 10.1016/j.mssp.2015.06.081

[5] M.Y. Guo, M.K. Fung, F. Fang, X.Y. Chen, A.M.C. Ng, A.B. Djuriˇsi´c, W.K. Chan, ZnO and TiO2 1D nanostructures for photocatalytic applications, J. Alloys Compd. 509 (2011) 1328-1332.

DOI: 10.1016/j.jallcom.2010.10.028

[6] M. J. Torralvo, J. Sanz, I. Sobrados, J. Soria, C. Garlisi, G. Palmisano, S. Cetinkaya, S. yurdakal, V. Augugliaro, Anatase photocatalyst with supported low crystalline TiO2: The influence of amorphous phase on the activity, Appl. Catal. B: Environ. 221(2018) 140-151.

DOI: 10.1016/j.apcatb.2017.08.089

[7] M. Yeganeh, N. Shahtahmasebi, A. Kompany, The magnetic characterization of Fe doped TiO2 semiconducting oxide nanoparticles synthesized by sol–gel method. Phys. B. 511(2017) 89-98.

DOI: 10.1016/j.physb.2017.02.010

[8] K. C. Sung, P. Chang, Fabrication and enhanced photocatalytic property of TiO2-ZnO composite photocatalysts, Mater. Lett. 30(2018) 58-52.

[9] M. Acerce, D. Voiry, M. Chhowalla, Metallic 1T phase MoS2 Nanosheets as Supercapacitor Electrode Materials, Nat. Nano technol. 10(2015)313-318.

DOI: 10.1038/nnano.2015.40

[10] C. L. He, J. Liu, Q. Yao, T. Chen, L. Yan, W. Hu, F. Jiang, Y. Zhao, Y. Hu, T. Sun, Z. Wei, Vacancy-Induced Ferromagnetism of MoS2 Nanosheets, J. Am. Chem. Soc. 137(2015)2622-2627.

DOI: 10.1021/ja5120908

[11] S. S. Chou, Y. K. Huang, J. Kim, B. Kaehr, B. M. Foley, P. Lu, C. Dykstra, P. E. Hopkins, C. J. Brinker, J. Huang, V. P. Dravid, Controlling the Metal to Semiconductor Transition of MoS2 and WS2 in Solution, J. Am. Chem. Soc. 137(2015)1742-1745.

DOI: 10.1021/ja5107145

[12] L. Wang, Z. Xu, W. Wang, X. Bai, Atomic Mechanism of Dynamic Electrochemical Lithiation Processes of MoS2 Nanosheets, J. Am. Chem. Soc. 136(2014)6693-6697.

DOI: 10.1021/ja501686w

[13] D.P. Wu, X.L. Wang, H.J. Wang, F.J. Wang, D.Q. Wang, Z.Y. Gao, X.J. Wang, F. Xu, K. Jiang, Ultrasonic-assisted synthesis of two dimensional BiOCl/MoS2 with tunable band gap and fast charge separation for enhanced photocatalytic performance under visible light, J. Colloid Interface Sci. 533 (2019) 539–547.

DOI: 10.1016/j.jcis.2018.08.084

[14] L. Chen, J. He, Q. Yuan, S.F. Yin, Environmentally benign synthesis of branched Bi2O3–Bi2S3 photocatalysts by an etching and re-growth method, J Mater Chem A. 3(2014) 1096-1102.

[15] Y. Yin, J. Han, Y. Zhang, Z. Zhang, Contributions of Phase, Sulfur Vacancies, and Edges to the Hydrogen Evolution Reaction Catalytic Activity of Porous Molybdenum Disulfide Nanosheets, J Am Chem Soc. 138 (2016) 7965-7972.

DOI: 10.1021/jacs.6b03714