Photocatalytic activity of 3D flower-like MoS2 hemispheres
- National Key Laboratory of Photoelectric Technology and Functional Materials Culture Base in Shaanxi Province, National Photoelectric Technology and Functional Materials & Application of Science and Technology International Cooperation Base, Institute of Photonics & Photon-Technology and School of Physics, Northwest University, Xi’an, 710069 (China)
Highlights: • The ultrathin MoS{sub 2} nano-sheet assembled 3D flower-like MoS{sub 2} hemispheres were prepared via hydrothermal method. • The bandgap of as-synthesized MoS{sub 2} is about 2.05 eV, resulting in a broad absorption in the visible range. • The photocatalyst of MoS{sub 2} present the optimal catalytic property under mild acidity. - Abstract: The novel 3D flower-like MoS{sub 2} hemispheres assembled by ultrathin MoS{sub 2} nano-sheet petals have been successfully prepared via a facile hydrothermal method using CTAB as surfactant. The crystal structure and morphology of the as-synthesized MoS{sub 2} samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectra (FTIR), Raman spectra and scanning electron microscopy (SEM). Moreover the microstructure and the optical properties of MoS{sub 2} samples were also measured by transmission electron microscopy (TEM) and the UV–vis diffuse reflectance spectra (DRS). The photocatalytic performance of the flower-like MoS{sub 2} hemispheres were evaluated through the degradation of Rhodamine (RhB) and methylene blue (MB) solutions, and the stabilities of photo-catalysts were also studied through the three cycles of experiments. The effects on photo-catalytic performance from the initial pH values (3–9) of RhB and MB solutions were also investigated, indicating the samples present the optimal catalytic property at pH = 5.
- OSTI ID:
- 22803927
- Journal Information:
- Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 100; ISSN MRBUAC; ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CRYSTAL STRUCTURE
FOURIER TRANSFORM SPECTROMETERS
HYDROTHERMAL SYNTHESIS
METHYLENE BLUE
MICROSTRUCTURE
MOLYBDENUM SULFIDES
MORPHOLOGY
NANOSTRUCTURES
OPTICAL PROPERTIES
PH VALUE
PHOTOCATALYSIS
RAMAN SPECTRA
RHODAMINES
SCANNING ELECTRON MICROSCOPY
SHEETS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION