Hydrothermal Synthesis of Graphene and Titanium Dioxide Nanotubes by a One-Step Method for the Photocatalytic Degradation of Amoxicillin
To improve the photocatalytic efficiency of titanium nanotubes (TNTs) for amoxicillin removal, we synthesized a composite catalyst, graphene (GN)-TNTs through an easy one-step hydrothermal method. Photocatalytic activity for amoxicillin (AMX) degradation was studied researched under near-ultraviolet light (365 nm). The effects of GN loading, catalyst concentration, AMX concentration, and pH on photocatalytic activity were explored. Results showed that the photocatalytic activity of GN-TNT was closely related to GN loading. The degradation efficiency of AMX can reach up to 95% within 3 h with 0.1 g/L 10% GN-TNT at pH 9. Furthermore, kinetic-study results showed that degradation can be expressed by a first-order-reaction kinetic model. This study also discussed the degradation mechanism of photocatalytic activity. By adding different capture agents, the electron– hole acted as the main active substance during photocatalytic degradation activity.
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Document Type: Short Communication
Publication date: February 1, 2016
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- Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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