Surface Photovoltage: an Efficient Tool of Evaluation of Photocatalytical Activity of Materials
On the principle of surface photovoltage (SPV) and photocatalysis, an approach was proposed and developed to evaluate a photocatalytical activity of catalysts from SPV intensity measurements. By using a model case of TiO2 catalysts, the method was experimentally studied for determination and prediction of the activity by intensity of SPV responses as a parameter. It was found that the photocatalytical activity correlates well with the SPV value of catalysts. The SPV intensity as measuring parameter, with characteristics of quick, easy, non-destructive operation, may be applied efficiently to evaluate photocatalytical activity of solid materials such as mono/multi crystalline, film and particulate powder in various types, sizes and treatments.
Pengcheng Wang, Liqun Ai, Yungang Li, Xiaoming Sang and Jinglong Bu
B. H. Wang et al., "Surface Photovoltage: an Efficient Tool of Evaluation of Photocatalytical Activity of Materials", Advanced Materials Research, Vols. 295-297, pp. 614-617, 2011