CONTROLLABLE ASYMMETRIC SURFACE FUNCTIONALIZATION OF NANOMATERIALS WITH NATURAL POLYMER TEMPLATE

原文（中国語）

A method of preparing Janus nanomaterials includes dispersing a chitosan template in an aqueous solution, adsorbing a first portion of a surface of a nanomaterial on the chitosan template, functionalizing a second portion of the surface of the nanomaterial so that the second portion includes a hydrophobic surface functionality, and releasing the nanomaterial from the chitosan template, thereby providing the nanomaterial with asymmetric surface functionalities where the first portion includes a hydrophilic surface functionality and the second portion includes the hydrophobic surface functionality. A method also includes introducing an enhanced oil recovery fluid including Janus nanomaterials from a chitosan template so that the Janus nanomaterials include a hydrophilic surface functionality and a hydrophobic surface functionality, displacing hydrocarbons from the hydrocarbon-bearing formation after introducing the enhanced oil recovery fluid with the Janus nanomaterials, and recovering the hydrocarbons.