Cauliflower-like tin sulphide nanoparticles: an amazing material for adsorption of methylene blue dye

The removal of MB dye from an aqueous solution onto cauliflower-like SnS nanoparticles was investigated. Adsorption parameters including contact time, solution temperature, amount of adsorbent, pH solution and the concentration of substrate were evaluated. The obtained data revealed that SnS nanoparticles are capable of adsorbing organic dyes during several seconds. The cauliflower-like morphology of the nanoparticles, confirmed by scanning electron microscopy, was an important factor for the rapid adsorption of MB dye on nanoparticles. It was found that each particle has been made of several discs with a thickness of 25 nm. This structural property plays an important role in the adsorption. The nanoparticles were reused 18 times without any significant decrease in their adsorption capability.