Figure 3.

The time-dependent UV–vis spectra in a and b are recorded for the methyl orange solution containing PZNF and ZNF, respectively. c The variation of relative concentration of remaining methyl orange molecules with respect to irradiation time. d Degradation changes as a function of irradiation time (80 and 160 min) over 10 cycles. The beginning concentration C0 is taken as that in a

Wang et al. Nanoscale Research Letters 2010 5:1800-1803   doi:10.1007/s11671-010-9715-x