However, with a bias of 0.5 V vs. Ag/AgCl, the decolorization of RhB has been significantly improved, about 52.8% decolorization of RhB solution after 2 h of irradiation. Photoelectrocatalysis is a combination of photocatalysis and electrooxidation using the semiconductor films. By this method, an anodic bias on NP-TiO2 film is used to drive photogenerated electrons and holes moving toward different https://www.selleckchem.com/products/cbl0137-cbl-0137.html direction, so as to suppress the recombination and promote the organic degradation [11, 28]. Moreover, besides the improved optical
absorption, the porous structure also contributes to a short diffusion path for RhB molecules to the active surface area. Therefore the NP-TiO2 film displays efficient photoelectrocatalytic activity for organic degradation. It can be expected that the chemical oxidation method for NP-TiO2 films is scalable for practical SIS3 ic50 applications. With a larger active area, the NP-TiO2 film is potential to be used as an efficient electrode for energy conversion and organic pollutant removal. Figure 4 RhB decolorization as a function of time under various conditions. Conclusions A nanoporous TiO2 film on Ti substrate was synthesized by treating the initially
H2O2-oxidized Ti plate in hot TiCl3 solution and followed by calcinations. The pre-oxidation in H2O2 solution is necessary to form such porous structure, indicating that the formation process Navitoclax in vitro is a combination of the corrosion of Ti substrate and the oxidation hydrolysis of TiCl3. The film possesses exclusively anatase phase and hierarchical porous morphology, with the diameter of the inside pores as small as 20 nm. The porous TiO2 film displays enhanced optical absorption, photocurrent generation, and efficient photoelectrocatalytic activity for RhB decolorization. The generated photocurrent density can reach as high as 1.2 mA/cm2. The chemical oxidation
method for the nanoporous TiO2 film is possible to be scaled up and developed into a strategy to provide efficient TiO2 electrodes for diverse applications. Acknowledgements This work is financially supported by the Natural Science Foundation of China (No. 21377084) and Shanghai Municipal Natural Science Foundation (No. 13ZR1421000). We gratefully acknowledge the support in DRS measurements AMP deaminase and valuable suggestions by Ms. Xiaofang Hu of the School of Environmental Science and Engineering, Shanghai Jiao Tong University. References 1. Fujishima A, Zhang X, Tryk DA: TiO 2 photocatalysis and related surface phenomena. Surf Sci Rep 2008, 63:515–582.CrossRef 2. Tran PD, Wong LH, Barber J, Loo JSC: Recent advances in hybrid photocatalysts for solar fuel production. Energ Environ Sci 2012, 5:5902.CrossRef 3. Kubacka A, Fernandez-Garcia M, Colon G: Advanced nanoarchitectures for solar photocatalytic applications. Chem Rev 2012, 112:1555–1614.CrossRef 4.