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Facile Preparation of Nano-Bi2MoO6/Diatomite Composite for Enhancing Photocatalytic Performance under Visible Light Irradiation

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College of Environmental and Science Technology, Donghua University, Shanghai 201620, China
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College of Petrochemical and Energy Engineering, Zhejiang Ocean University, Zhoushan 316022, China
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Institute of Innovation & Application, Zhejiang Ocean University, Zhoushan 316022, China
*
Authors to whom correspondence should be addressed.
Materials 2018, 11(2), 267; https://doi.org/10.3390/ma11020267
Received: 7 December 2017 / Revised: 3 February 2018 / Accepted: 6 February 2018 / Published: 9 February 2018
In this work, a new nano-Bi2MoO6/diatomite composite photocatalyst was successfully synthesized by a facile solvothermal method. Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and UV-vis diffuse reflection spectroscopy (DRS) were employed to investigate the morphology, crystal structure, and optical properties. It was shown that nanometer-scaled Bi2MoO6 crystals were well-deposited on the surface of Bi2MoO6/diatomite. The photocatalytic activity of the obtained samples was evaluated by the degradation of rhodamine B (RhB) under the visible light (λ > 420 nm) irradiation. Moreover, trapping experiments were performed to investigate the possible photocatalytic reaction mechanism. The results showed that the nano-Bi2MoO6/diatomite composite with the mass ratio of Bi2MoO6 to diatomaceous earth of 70% exhibited the highest activity, and the RhB degradation efficiency reached 97.6% within 60 min. The main active species were revealed to be h+ and•O2−. As a photocatalytic reactor, its recycling performance showed a good stability and reusability. This new composite photocatalyst material holds great promise in the engineering field for the environmental remediation. View Full-Text
Keywords: composite; photocatalyst; Bi2MoO6; diatomite/diatomaceous earth composite; photocatalyst; Bi2MoO6; diatomite/diatomaceous earth
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MDPI and ACS Style

Cai, L.; Gong, J.; Liu, J.; Zhang, H.; Song, W.; Ji, L. Facile Preparation of Nano-Bi2MoO6/Diatomite Composite for Enhancing Photocatalytic Performance under Visible Light Irradiation. Materials 2018, 11, 267.

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