▎ 摘　　要

NOVELTY - Preparation of titanium dioxide involves subjecting industrial titanium dioxide to two-stage iron removal process, then reacting with an alkali under high pressure and temperature, obtaining titanium dioxide nanotubes, sequentially loading the titanium dioxide nanotubes with silver and amino group-modified graphene oxide, obtaining graphene oxide-coated titanium dioxide nanotubes modified with amino group, and performing surface organic treatment. USE - Preparation of titanium dioxide used in paint for marine application. ADVANTAGE - The method provides titanium dioxide having excellent dispersion performance in paint. Since the titanium dioxide is subjected to two-stage iron removal process, the corrosion resistance and mechanical property of the paint are improved. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for titanium dioxide-preparing device.