scholarly journals Synthesis and excellent visible light photocatalysis performance of magnetic reduced graphene oxide/ZnO/ZnFe2O4 composites

RSC Advances ◽  
2017 ◽  
Vol 7 (38) ◽  
pp. 23246-23254 ◽  
Author(s):  
Juhua Luo ◽  
Zhu Yan ◽  
Rongqi Liu ◽  
Jianguang Xu ◽  
Xu Wang
Keyword(s):  
Photocatalytic Activity ◽  
Graphene Oxide ◽  
Visible Light ◽  
Conduction Band ◽  
High Photocatalytic Activity ◽  
Visible Light Photocatalysis ◽  
Ternary Composite ◽  
Photogenerated Electrons ◽  
Reduced Graphene ◽  
Magnetic Reduced Graphene Oxide

The partial photogenerated electrons from conduction band of ZnFe2O4 are transferred to the conduction band of ZnO, oppositely, the photogenerated holes lefted in the valance band of ZnFe2O4. The ternary composite has high photocatalytic activity.

A facile solvothermal approach for the synthesis of novel W-doped TiO2 nanoparticles/reduced graphene oxide composites with enhanced photodegradation performance under visible light irradiation

2017 ◽  
Vol 41 (22) ◽  
pp. 13382-13390 ◽  
Author(s):  
Xiang Liu ◽  
Yidan Shi ◽  
Yuming Dong ◽  
Hexing Li ◽  
Yongmei Xia ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Graphene Oxide ◽  
Visible Light ◽  
Tio2 Nanoparticles ◽  
Reduced Graphene Oxide ◽  
Visible Light Irradiation ◽  
High Photocatalytic Activity ◽  
Reduced Graphene ◽  
Oxide Composites ◽  
First Time

W-Doped TiO2 nanoparticles/reduced graphene oxide composites have been synthesized for the first time. The mechanism of their high photocatalytic activity for MB has been identified and discussed.

Biomolecule-mediated CdS-TiO2-reduced graphene oxide ternary nanocomposites for efficient visible light-driven photocatalysis

2015 ◽  
Vol 44 (1) ◽  
pp. 193-201 ◽  
Author(s):  
Soumen Dutta ◽  
Ramakrishna Sahoo ◽  
Chaiti Ray ◽  
Sougata Sarkar ◽  
Jayasmita Jana ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Graphene Oxide ◽  
Visible Light ◽  
Reduced Graphene Oxide ◽  
Charge Recombination ◽  
Reduced Graphene ◽  
Visible Light Driven

Charge recombination in yellow CdS has been overcome by rGO and interfacial TiO2 to show maximum visible-light-driven photocatalytic activity.

scholarly journals Incorporation of reduced graphene oxide into faceted flower-like {001} TiO 2 for enhanced photocatalytic activity

2018 ◽  
Vol 5 (8) ◽  
pp. 180613 ◽  
Author(s):  
Haijin Liu ◽  
Peiyao Li ◽  
Haokun Bai ◽  
Cuiwei Du ◽  
Dandan Wei ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Photocatalytic Activity ◽  
Graphene Oxide ◽  
Visible Light ◽  
Reduced Graphene Oxide ◽  
Theoretical Calculations ◽  
X Ray ◽  
Transmission Electron ◽  
Reduced Graphene ◽  
Photocatalytic Activities

Anatase TiO 2 with {001} facets is much more active than that with {101} facets, which has been verified via experiments and theoretical calculations. Graphene has garnered much attention since it was initially synthesized, due to its unique properties. In this study, reduced graphene oxide (RGO)/{001} faceted TiO 2 composites were fabricated via a solvothermal method. The composites were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectrophotometry, photoluminescence and Raman analysis. The results revealed that the graphene oxide was reduced during the preparation process of the {001} faceted TiO 2 , and combined with the surface of {001} TiO 2 . The photocatalytic activities of the composites were evaluated through the degradation of basic violet, under both white light ( λ > 390 nm) and visible light ( λ = 420 nm) irradiation. The results indicated that the photocatalytic activities of the {001} faceted TiO 2 were significantly improved following the incorporation of RGO, particularly under visible light irradiation. Theoretical calculations showed that the band structure of the {001} faceted TiO 2 was modified via graphene hybridization, where the separation of photoinduced electron–hole pairs was promoted; thus, the photocatalytic activity was enhanced.

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