Facile synthesis of size-tunable CuO/graphene composites and their high photocatalytic performance

Nanoengineered Advanced Materials for Enabling Hydrogen Economy: Functionalized Graphene–Incorporated Cupric Oxide Catalyst for Efficient Solar Hydrogen Production

“…It has been reported that –COOH behaves as an electron acceptor group in graphene, which can improve the p‐type conductivity of the hybrid film. It is also shown that the charge separation efficiency increases with the presence of graphene . The average photocurrent for the first excitation of visible light cycle is similar for all three electrodes, the stability of the generated photocurrent shows the importance of the functional groups.…”

“…The remarkable change in stability with the hybrid electrode (CuO:G‐COOH) might be related to the following causes. Graphene incorporation induces faster transportation of photogenerated charge carrier to their respective electrodes resulting in efficient separation of large numbers of long‐lived e − /h + pairs . In addition, because of the electron accepting nature of –COOH functional group in graphene, the photogenerated electrons can be easily captured which results in reducing the availability of free electrons for conversion of CuO into Cu 2 O leading to a more stable photocurrent .…”

Solvothermal fabrication and enhanced visible light photocatalytic activity of Cu2O-reduced graphene oxide composite microspheres for photodegradation of Rhodamine B

“…The rGO sheets have a gauze-like morphology with crumpled structure, which contributes to the high specific surface area. Further observation showed that the spherical Cu 2 O particles were randomly distributed on reduced graphene oxide sheets [47]. And the rGO sheets act as bridges connected with different Cu 2 O microspheres, which is beneficial for the separation of photo-generated carriers to enhance the photocatalytic activity.…”

Improved photocatalytic activity of ZnO coupled CuO nanocomposites synthesized by reflux condensation method

“…Similarly, hybrid CuO-Cu 2 O nanocomposites exhibited enhanced photocatalytic activity for methyl orange dye when compared to pure CuO due to the synergic effects of CuO and Cu 2 O [24]. Also, CuO-graphene nanocomposites showed superior photocatalytic activity for rhodamine-B dye degradation when compared to bare CuO in the presence of H 2 O 2 due to the increased dye adsorption and photoreactivity [25,26]. Apart from photocatalytic degradation, CuO-graphene and CuO-CNTs have also showed high specific capacitance, and remarkably good reversible capacity and cyclability as anodes of Li-ion batteries when compared to pure CuO [27][28][29].…”