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Fu L.,CAS Institute of Botany | Fu L.,Golden Yuanta Construction Engineering Co. | Zheng Y.,CAS Institute of Botany | Ren Q.,CAS Institute of Botany | And 2 more authors.
Journal of Ovonic Research | Year: 2015

In this paper, we report the first time preparation of SnO2 nanoparticles (NPs) using a green chemistry method. The leaf extract of Plectranthus amboinicus was used as reducing and stabilization agent for synthesizing SnO2 NPs. The synthesized SnO2 NPs were characterized by SEM, EDX, XRD and UV-vis spectroscopy. Results showed that the biosynthesized SnO2 NPs owing a high purity. The photocatalytic property of the biosynthesized SnO2 NPs was investigated by photodegradation of rhodamine B (Rh B) under visible light illumination. Results indicated that the photocatalytic performance of the biosynthesized SnO2 NPs is much higher than that of commercial SnO2. Moreover, the biosynthesized SnO2 also exhibited an excellent reusability. © 2015 Journal of Ovonic Research All rights received. Source


Fu L.,CAS Institute of Botany | Fu L.,Golden Yuanta Construction Engineering Co. | Xia T.,Huazhong University of Science and Technology | Zheng Y.,CAS Institute of Botany | And 3 more authors.
Ceramics International | Year: 2015

In this work, WO3-reduced graphene oxide (RGO) nanocomposite was synthesized via a simple one-pot hydrothermal method. The synthesized nanocomposite was characterized by SEM, XRD, EDX, UV-vis spectroscopy, N2 adsorption/desorption, photocurrent response, electrochemical impedance spectroscopy and Raman spectroscopy. The superior contact between WO3 and RGO sheets in the nanocomposite facilitates the photocatalytic degradation of methylene blue and evolution of oxygen. The cause of the enhanced photocatalytic performance could ascribe to the highly facilitated electron transport by the synergistic effect between WO3 and RGO sheets, as well as suppressing the electron hole pair recombination in the nanocomposite. © 2015 Elsevier Ltd and Techna Group S.r.l. Source


Fu L.,CAS Institute of Botany | Fu L.,Golden Yuanta Construction Engineering Co. | Cai W.,City University of Hong Kong | Wang A.,City University of Hong Kong | Zheng Y.,CAS Institute of Botany
Materials Letters | Year: 2015

We have developed a new synthesis method to prepare WO3-Ag hybrid nanowires (WO3-Ag NWs) for photocatalytic hydrogenation of nitrobenzene (NB) to aniline. The catalyst was characterized by SEM, XRD, N2 adsorption/desorption and Raman spectroscopy. Results showed that the WO3-Ag hybrid nanowires displays a porous network structure with high specific surface area. The synergy of Ag NWs and WO3 NWs plays the most vital role in this enhanced photocatalytic performance. Moreover, the synthesized WO3-Ag NWs also exhibited excellent reusability. © 2014 Elsevier B.V. All rights reserved. Source


Fu L.,CAS Institute of Botany | Fu L.,Golden Yuanta Construction Engineering Co. | Zheng Y.,CAS Institute of Botany | Fu Z.,Golden Yuanta Construction Engineering Co. | And 2 more authors.
Functional Materials Letters | Year: 2015

Reduced graphene oxide (RGO) wrapped TiO2/Ag ternary nanocomposite was synthesized via a wet chemical method. The synthesized nanocomposite was characterized using UV-Vis spectroscopy, Raman spectroscopy, photoluminescence spectroscopy, Scanning electron microscope (SEM), Energy-dispersive X-ray spectroscopy (EDX) and X-ray Diffraction (XRD). The average size of RGO wrapped TiO2 and deposited Ag nanoparticles were 3.2 μm and 48 nm, respectively. Due to the highly facilitated electron transport by the synergistic effect between RGO sheets and Ag nanoparticles, the TiO2/RGO/Ag nanocomposite exhibited a significant enhancement of photocatalytic activity towards degradation of methylene blue under UV light. © 2015 World Scientific Publishing Company. Source


Fu L.,CAS Institute of Botany | Fu L.,Golden Yuanta Construction Engineering Co. | Cai W.,City University of Hong Kong | Wang A.W.,City University of Hong Kong | And 3 more authors.
Materials Technology | Year: 2015

In this paper, TiO2 -WO3 hybrid film was fabricated by a simple dip coating method. The synthesised hybrid thin film was characterised by SEM, XRD, UV-vis diffuse reflectance spectrophotometer, Raman spectroscopy, photocurrent measurement and N2 adsorption/desorption. The TiO2 -WO3 hybrid film exhibited a significant enhancement of photocatalytic activity towards degradation of 4-chlorophenol under visible light. The enhanced photocatalytic performance could ascribe to the formation of heterojunction, benefiting for effective utilisation of solar energy and suppressing the recombination of photogenerated electron-hole pairs. © 2015 W. S. Maney & Son Ltd. Source

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