Charge-Selective Photocatalytic Degradation of Organic Dyes using Halloysite Nanotubes

This study explores the use of Halloysite NanoTubes (HNTs) as photocatalysts capable ofdecomposing organic dyes under exposure to visible or ultraviolet light. We observe that the extent of RhBphotocatalytic degradation in 100 min in the presence of the HNTs is ~4 times higher compared tothat of bare RhB. Moreover, under optimized conditions, the as-extracted photodegradation rate ofRhB (~0.0022 /min) is comparable to that of the previously reported work on the photodegradationof RhB in the presence of tubular nanostructures. A parallel effect is observed for anionic Coumarinphotodegradation, albeit less efficiently. By leveraging the unique properties of HNTs, a family of naturally occurringnanotube structures, this research offers valuable insights for optimizing photocatalytic systems inthe pursuit of effective and eco-friendly solutions for environmental remediation.