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A Facile Synthesis Method of Flaw-free h-MoO₃ Nanorods
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흠집 없는 h-MoO₃ 나노막대의 용이한 합성법

논문 기본 정보

Type
Academic journal
Author
So-Hyun Park (가천대학교) Ki-Chul Kim (목원대학교)
Journal
Korea Academy Industrial Cooperation Society Journal of the Korea Academia-Industrial cooperation Society Vol.23 No.5 KCI Accredited Journals
Published
2022.5
Pages
315 - 320 (6page)
DOI
10.5762/KAIS.2022.23.5.315

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A Facile Synthesis Method of Flaw-free h-MoO₃ Nanorods
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Molybdenum trioxide (MoO₃) is an n-type semiconductor material having a wide bandgap energy of 2.5 ~ 3.2 eV. It finds application in various fields, such as photocatalysts, lithium-ion batteries, supercapacitors, and gas sensors. Among these, photocatalysts have received a lot of attention for their ability to remove organic pollutants in the air as well as in wastewater. In this study, flaw-free hexagonal molybdenum trioxide (h-MoO₃) nanorods (NRs) were synthesized using the hydrothermal process. To synthesize h-MoO₃ NRs, the precursor of ammonium heptamolybdate tetrahydrate (AHM) was dissolved in deionized water using two different dispersion methods. Nitric acid was then added to this reaction solution with stirring. Hydrothermal synthesis proceeded at 85℃ for 60 minutes. The precipitate was filtered using a micro-membrane and dried in a vacuum oven. The morphology of the MoO₃ NRs was analyzed using a field emission scanning electron microscope. The crystallographic properties of MoO₃ NRs were characterized by Raman spectroscopy and X-ray diffraction. The results showed that flaw-free h-MoO₃ NRs were synthesized uniformly by the ultrasonic dispersion method. On the other hand, the stirring dispersion method produced irregular-sized NRs with flaws. The uniform flaw-free h-MoO₃ NRs produced by the ultrasonic dispersion method are expected to be used in high-efficiency visible light photocatalyst applications due to their uniform size and fine structure.

Contents

요약
Abstract
1. 서론
2. 실험방법
3. 실험결과 및 고찰
4. 결론
References

References (13)

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C. Chen, T. Cheng, L. Wang, Y. Tian, Q. Deng, Y. Shi, "Application of MoO3 as an efficient catalyst for wet air oxidation treatment of pharmaceutical wastewater (Experimental and DFT study)", Archives of Environmental Protection, Vol. 47, No. 2 pp. 47–60, 2021. DOI: https://doi.org/10.24425/aep.2021.137277 Crossref J. A. Mendoza, D. H. Lee, J.-H. Kang, "Photocatalytic removal of gaseous nitrogen oxides using WO3/TiO₂ particles under visible light irradiation: Effect of surface modification", Chemosphere, Vol. 182, pp. 539-546, 2017. DOI: https://doi.org/10.1016/j.chemosphere.2017.05.069 Crossref A. Singh, S. Kumar, B. Ahmed, R. K. Singh, A. K. Ojha, "Temperature induced modifications in shapes and crystal phases of MoO3 for enhanced photocatalytic degradation of dye waste water pollutants under UV irradiation", Journal of Alloys and Compounds, Vol. 806, pp. 1368-1376, 2019. DOI: https://doi.org/10.1016/j.jallcom.2019.07.272 Crossref J. Zhang, Z. Huang, Y. Du, X. Wu, H. Shen, G. Jing, "Alkali-poisoning-resistant Fe₂O3/MoO3/TiO₂ catalyst for the selective reduction of NO by NH3: The role of the MoO3 safety buffer in protecting surface active sites" Environmental science & technology, Vol. 54, pp. 595-603, 2019. DOI: https://pubs.acs.org/doi/10.1021/acs.est.9b06318 R. B. Anjaneyulu, B. S. Mohan, G. P. Naidu, R. Muralikrishna, "Visible light enhanced photocatalytic degradation of methylene blue by ternary nanocomposite, MoO3/Fe₂O3/rGO" Journal of Asian Ceramic Societies, Vol. 6, No. 3, pp. 183-195, 2018. DOI: https://doi.org/10.1080/21870764.2018.1479011 Crossref

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