Industrial effluents consist of various toxic dyes and nitro-aromatic compounds that are harmful to environment and cause water pollution at large level. Therefore, removal/degradation of these toxic pollutants from the wastewater sources is need of time. Here, silver nanoparticles fabricated polystyrene-poly(N-isopropyl methacrylamide-acrylic acid) core shell particles were prepared via precipitation polymerization method and used as catalyst to degrade toxic dyes such as Congo red (CR), Rhodamine B (RhB) and Methylene blue (Mb) in the presence of sodium borohydride (NaBH4) as reducing agent. Controlled reactions were also performed to prove high activity of core shell nano-catalyst. Pseudo first order kinetic model was applied to investigate the degradation reactions of toxic dyes. It was concluded that prepared composite nano-catalyst increased the rate of reduction reactions and made the reaction kinetically feasible. Nano-catalyst maintained it activity even in case of simultaneous degradation of toxic dyes.
Dyes reduction reactions were evaluated on the basis of Langmuir Hinshelwood (L-H) mechanism. Pollutants degradation was also performed under different reaction conditions such as catalyst dose, NaBH4 and amount of toxic dye. Percentage activity of hybrid catalyst was maintained up to fourth reusability cycle for reduction of toxic dyes.
- They learn the methodology to prepared polymers microgels with different morphologies.
- They will learn to fabricated different metal nanoparticles in polymer micorgels to prolong their life span.
- They will learn to use their composite particles as catalyst for the treatment of wastewater.