Three-dimensional MoO3 nanoflowers assembled with nanosheets for rhodamine B degradation under visible light

Journal Article · Sat Dec 15 04:00:00 EST 2018 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2018.08.036· OSTI ID:22805343

Huang, Licheng ^[1]; Fang, Wencheng ^[2]; Yang, Ying; Wu, Jie; Yu, Hui; Dong, Xiangting; Wang, Tingting; Liu, Zhelin; Zhao, Bo ^[1]

---

1. Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun 130022 (China)
2. Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun, 130024 (China)

Highlights: • The orthorhombic three-dimensional MoO{sub 3} nanoflowers were synthesized by the modified hydrothermal method. • Using different amount of HCl to transfer from the h-MoO{sub 3} to the α-MoO{sub 3} was well discussed. • Better pore sizes and surface areas of the three-dimensional MoO{sub 3} nanoflowers accelerate the photodegradation process of RhB. • The three-dimensional MoO{sub 3} nanoflowers showed the photocatalytic activity (91.57%). • This methodology should be useful for preparing other nanostructured catalysts. - Abstract: Three-dimensional hierarchical nanoflowers self-assembled with the orthorhombic molybdenum oxide (α-MoO{sub 3}) nanoflowers were synthesized by the modified hydrothermal method. The structure characterizations of the three-dimensional α-MoO{sub 3} nanoflowers were carried out by scanning electron microscope (SEM), Energy Disperse Spectroscopy (EDS), X-ray diffraction (XRD) and nitrogen adsorption-desorption measurement. Moreover, the three-dimensional α-MoO{sub 3} nanoflowers as photocatalyst exhibited enhanced photocatalytic activity towards photodegradation of Rhodamine B (RhB) under xenon (Xe) lamp irradiation. The results of SEM, EDS, XRD and nitrogen adsorption-desorption measurement showed the three-dimensional α-MoO{sub 3} nanoflowers have a better morphology, pore size (7.99 nm) and surface areas (50.788 m{sup 2} g{sup −1}) than hexagonal MoO{sub 3} (h-MoO{sub 3}) nanosheets, photocatalytic activity studies confirmed that the three-dimensional α-MoO{sub 3} nanoflowers photocatalyst exhibits a high visible-light-driven activity for photodegradation of RhB solution of 91.57% within 160 min under Xe lamp irradiation. A mechanism was also proposed for the degradation of RhB by three-dimensional α-MoO{sub 3} nanoflowers.

• OSTI ID: 22805343
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 108; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ADSORPTION
CATALYSTS
DESORPTION
HYDROCHLORIC ACID
HYDROTHERMAL SYNTHESIS
IRRADIATION
LIGHT BULBS
MOLYBDENUM OXIDES
MORPHOLOGY
NANOSTRUCTURES
NITROGEN
ORTHORHOMBIC LATTICES
PHOTOCATALYSIS
RHODAMINES
SCANNING ELECTRON MICROSCOPY
SHEETS
SPECTROSCOPY
SURFACE AREA
X-RAY DIFFRACTION