Laser-induced plasma irradiation driven rapid photocatalytic degradation of methylene blue with TiO2 nanoparticles

A light source from a neodymium-doped yttrium aluminium garnet laser (1064 nm) was used to excite the A3 iron plate to produce plasma and release UV light for the rapid photo -catalytic degradation of methylene blue (MB) dye. The 30 nm anatase TiO2 nanoparticles were used as the photocatalysts. Plasma effectively degrades organic matter under optimal conditions: (10 mg/L MB, 2 g/L TiO2, 50 ml/L H2O2, pH = 10, and P = 70 mW); the degradation efficiency is related to the UV light source (200 nm -400 nm) produced by plasma sonoluminescence. The effect of the initial dye concentration, catalyst dosage, laser energy, and pH value, on the degradation of dyes was studied using UV-vis spectrophotometry. Ion chromatography confirmed the mineralisation of methylene blue (MB). The results showed that laser-induced plasma (LIP) photocatalysis effectively degrades MB. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

Automated summary

This study investigates the use of laser-induced plasma photocatalysis for the degradation of methylene blue dye. A neodymium-doped yttrium aluminium garnet laser is used to excite an iron plate and produce plasma, which releases UV light for the degradation process. The results show that the efficiency of degradation is influenced by the UV light source generated by plasma sonoluminescence.