Polysaccharide coated nanoparticle compositions comprising ions
A composition including a coated nanoparticle including a nanoparticle and a cross-linked carbohydrate-based coating and an ion selected from the group consisting of Li + , Na + , K + , Rb + , Cs + , Be 2+ , Mg 2+ , Ca 2+ , Sr 2+ , Ba 2+ , and mixtures thereof; methods of making and using the composition; and systems including the composition.
1. A nanoparticle composition for treatment of a subterranean formation, the nanoparticle composition comprising:
a coated nanoparticle comprising an iron oxide nanoparticle and a cross-linked carbohydrate-based coating comprising dextran, pentaerythritol glycidyl ether, and 2-amino-2-hydroxymethyl-propane-1,3-diol, and
an ion comprising Ca2+,
wherein the dextran is cross-linked by pentaerythritol glycidyl ether.