▎ 摘　　要

NOVELTY - Preparing a graphene oxide modified photo-catalyzed silica aerogel fiber product comprises e.g. (i) mixing silicon source, alcohol, water and acid catalyst to control the pH of mixed solution to obtain silica sol; (ii) adding deionized water and a base catalyst into the silica sol prepared, controlling the pH of the mixed solution and stirring to obtain a modified sol A; (iii) adding a mixed sol of titanium dioxide and graphene oxide into the modified sol A to obtain a modified sol B; (iv) soaking fiber product completely in modified sol B, and allowing to stand for a while to obtain gel; (v) aging the gel using a mixed solution of a silicon source/alcohol, and performing solvent replacement on the gel to obtain a graphene oxide-modified photo catalytic silica aerogel fiber semi-finished product; and (vi) modifying graphene oxide modified photo catalytic silica aerogel fiber product semi-finished product hydrophobically and drying. USE - The method is useful for preparing a graphene oxide modified photo-catalyzed silica aerogel fiber product. ADVANTAGE - The method conveniently adjusts hydrophobic properties of the finished product; and produces product with both hydrophilic and hydrophobic properties. DETAILED DESCRIPTION - Preparing a graphene oxide modified photo-catalyzed silica aerogel fiber product comprises (i) mixing silicon source, alcohol, water and acid catalyst to control the pH of mixed solution between 2-6 and stirring to obtain silica sol; (ii) adding deionized water and a base catalyst into the silica sol prepared, controlling the pH of the mixed solution to between 7-11 and stirring to obtain a modified sol A; (iii) adding a mixed sol of titanium dioxide and graphene oxide into the modified sol A to obtain a modified sol B; (iv) soaking fiber product completely in modified sol B, and allowing to stand for a while to obtain gel; (v) aging the gel using a mixed solution of a silicon source/alcohol, and performing solvent replacement on the gel using a displacement solvent to obtain a graphene oxide-modified photo catalytic silica aerogel fiber semi-finished product; and (vi) modifying graphene oxide modified photo catalytic silica aerogel fiber product semi-finished product hydrophobically and drying.