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Photodegradation of MB using photocatalytic paper with ZnO nanorods of different dimensions (samples 1 and 2). Sample 1 with thicker and longer nanorods showed higher photoreactivity (93% degradation after 120 min) than sample 2 (89% degradation after 120 min). The control sample of paper without ZnO nanorods showed 30% degradation in 120 min. Light intensity at the sample: 963 Wm–2, error bar: 5%.
