Figure 6.

a UV–vis absorption spectra of salicylic acid solution in the presence of sample 1 at different UV-irradiation times. b, c The degradation percentage of salicylic acid with different as-prepared photocatalysts: b sample 1; c sample 6.

Cao and Zhu Nanoscale Res Lett 2011 6:1   doi:10.1007/s11671-010-9742-7