Liquid metal assisted sonocatalytic degradation of organic azo dyes to solid carbon particles

Room temperature liquid metals are an emerging class of materials for a variety of heterogeneous catalytic reactions. In this work we explore the use of Ga based liquid metals as a sonochemical catalyst for the degradation of organic azo dyes such as methyl orange, congo red and eriochrome black T. Rapid degradation to non toxic solid carbon particles was achieved over a large dye concentration range to produce differently sized particles via both bath and probe sonication which could be repeated multiple times with the same catalyst. Room temperature liquid metals based on gallium can be used as a sonochemical catalyst to degrade organic azo dyes into harmless carbon particles with different sizes. The liquid metal is recoverable after each cycle and therefore reuseable.