Rapid microwave-assisted synthesis of silver decorated-reduced graphene oxide nanoparticles with enhanced photocatalytic activity under visible light

2014 ◽  
Vol 22 ◽  
pp. 16-20 ◽  
Author(s):  
Qiang Li ◽  
Ping Hai
RSC Advances ◽  
2020 ◽  
Vol 10 (71) ◽  
pp. 43447-43458
Author(s):  
Zilun Ma ◽  
Liyan Shi ◽  
Wenwen Qu ◽  
Qiong Hu ◽  
Ruifang Chen ◽  
...  

The photocatalytic enhancement of RGO/CdS/TiO2 is due to the high-energy {001} surface of TiO2 and CdS forming a stepped heterojunction, which is dispersed on the surface of reduced graphene oxide.


2015 ◽  
Vol 44 (1) ◽  
pp. 193-201 ◽  
Author(s):  
Soumen Dutta ◽  
Ramakrishna Sahoo ◽  
Chaiti Ray ◽  
Sougata Sarkar ◽  
Jayasmita Jana ◽  
...  

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


2018 ◽  
Vol 5 (8) ◽  
pp. 180613 ◽  
Author(s):  
Haijin Liu ◽  
Peiyao Li ◽  
Haokun Bai ◽  
Cuiwei Du ◽  
Dandan Wei ◽  
...  

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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