Sequestration of selenate and selenite onto titanate nanotube: A combined classical batch and advanced EXAFS approach

Materials interacting with inorganic selenium from the perspective of electrochemical sensing

“…Colloidal TiO2 in the form of nanoparticles dispersion was also found to be efficient Se(IV) adsorbent 24 , and it should be noted that titanium dioxide (nano)particles are also commercially available as heavy metal sorbents (Metsorb). It was further developed by adsorption of selenium oxyanions on graphene oxides decorated with TiO2 nanoparticles (TiO2/GO) 21 , on titanate nanotubes 162 or TiO2grafted cellulose fibres applicable for preconcentration and speciation of Se 163 . In all cases, very low retention of Se(VI) on TiO2 at pH higher than 2 was observed while Se(IV) sorption under less acidic conditions was kept very high allowing for very efficient speciation.…”