Fabrication of direct Z-scheme MoO3/N–MoS2 photocatalyst for synergistically enhanced H2 production |
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| Affiliation: | 1. Department of Physics, University of Okara, Okara, Pakistan;2. Department of Physics, University of Gujrat, HH Campus, Gujrat, 50700, Pakistan;3. Department of Physics, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, 64200, Pakistan;4. Department of Physics, University of Sahiwal, Sahiwal, Pakistan;5. Department of Physics, Bahauddin Zakariya University, Multan, 60800, Pakistan;6. Department of Humanities and Social Sciences, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, 64200, Pakistan;7. Physics Department, College of Science, Jouf University, P.O. Box: 2014, Sakaka, Saudi Arabia;8. Department of Mechanical Engineering, College of Engineering, Prince Sattam Bin Abdulaziz University, Al Kharj, Saudi Arabia;9. Department of Physics, College of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia |
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| Abstract: | A novel visible-light active MoO3/N–MoS2 heterostructure photocatalyst was fabricated via hydrothermal process. The structure, morphology and optical characteristics were studied using X-ray diffraction (XRD) technique, scanning electron microscopy (SEM), UV–visible and photoluminescence (PL) spectroscopies. The results indicated that loading pf MoO3 and nitrogen doping played main influence role in advancing the morphology and optical characteristics. Upon visible photo-illumination, the MoO3/N–MoS2 sample displayed superior photocatalytic H2-production activity (118 μ mol h?1g?1), which was about four-time higher than that of pure MoS2 (30 μ mol h?1g?1). The enhancement in photocatalytic performance of MoO3/N–MoS2 photocatalyst can be ascribed to the development of direct Z-scheme heterostructure, which promoted the photo-excited electrons/holes transfer and separation. The recycling experiment verified that the MoO3/N–MoS2 photocatalyst had superior cyclic activity and stability, implying promising applications in energy field. |
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| Keywords: | Heterostructure Photocatalysis |
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