Trace Amounts of Co3O4 Nano-Particles Modified TiO2 Nanorod Arrays for Boosted Photoelectrocatalytic Removal of Organic Pollutants in Water

Trace amounts of Co3O4 modified TiO2 nanorod arrays were successfully fabricated through the photochemical deposition method without adding any nocuous reagents. The Co3O4/TiO2 nanorod arrays fabricated in acid solution had the highest photo-electrochemical activity. We elaborated on the mechanism of Co3O4-TiO2 fabricated in different pH value solutions. The Co3O4-TiO2 had a more remarkable photo-electrochemical performance than the pure TiO2 nanorod arrays owing to the heterojunction between Co3O4 and TiO2. The degradation of methylene blue and hydroquinone was selected as the model reactions to evaluate the photo-electrochemical performance of Co3O4-TiO2 nanorod arrays. The Co3O4/TiO2 nanorod arrays had great potential in waste water treatment.

Decoration of titanium dioxide nanotubes by silver nanoparticles using photochemical deposition method and its application as an electrocatalyst to determine tinidazole

In this study, titanium nanotubes electrodes were decorated with silver nanoparticles (AgNPs/TiO2NTs) and used as an electrocatalyst for reduction of tinidazole. AgNPs/TiO2NTs are constructed by anodization of titanium sheet metal...

High selectivity to ethanol gas sensor based on ZnO nanosheets decorated with Ag nanoparticles by aqueous solution and photochemical deposition

We demonstrated the fabrication of Ag NPs decorated ZnO NSs on a glass substrate using the aqueous solution and photochemical deposition method. The synthesis process is room temperature. This two-dimensional ZnO NSs can increase the performance of gas sensors due to increase the surface-to-volume ratio. Through increasing the surface-to-volume ratio of nanostructures, it is possible to increase the absorption potion of the target gas. In addition, noble metal NPs attached to the ZnO nanostructure can also increase the performance of gas sensors because Ag NPs act as strong electron acceptors, it will be induced enhanced electron depletion layer. As a result, the Ag NPs decorated ZnO NSs gas sensor has high selectivity to ethanol, as well as improved gas sensing performance to ethanol as compared to ZnO.