▎ 摘　　要

NOVELTY - A corrosion inhibitor comprises solvent comprising deionized water, and solute comprising 5-15 mg/mL graphene oxide, 0-5 mg/mL benzimidazole, and 0-5 mg/mL cerium nitrate. The concentrations of benzimidazole and cerium nitrate are not 0 at the same time. USE - Corrosion inhibitor. ADVANTAGE - The corrosion inhibitor has high effectiveness and durability and is released at a preset pH value. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of corrosion inhibitor.