Surface functionalization of bamboo leave mediated synthesized SiO2 nanoparticles: Study of adsorption mechanism, isotherms and enhanced adsorption capacity for removal of Cr (VI) from aqueous solution.Green synthesis of nanoparticles (NPs) provides economic and environmental benefits as an alternative to chemical or physical methods.  Furthermore, the surface properties of such NPs can be modulated by means of the functionalization with different groups making them suitable for various advanced functional applications including water pollutants removal using adsorption technique.  The adsorption mechanism has been studied using Langmuir, Freundlich and Temkin adsorption isotherms. 
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