▎ 摘　　要

NOVELTY - A ferric oxide-reduced graphene oxide-silver composite material is obtained by loading active components ferric oxide and silver on a graphene oxide. USE - Ferric oxide-reduced graphene oxide-silver composite material used as adsorbent for removal of zero-valent mercury in industrial flue gas or exhaust gas (claimed). ADVANTAGE - The ferric oxide-reduced graphene oxide-silver composite material is economical, and has large specific surface area, excellent precious metal silver and magnetic material iron adsorption performance, and zero-value mercury removal efficiency of more than 90%. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for production of ferric oxide-reduced graphene oxide-silver composite material, which involves (i) mixing carrier graphene oxide and iron precursor in ethylene glycol, adding polyethylene glycol, reacting, centrifuging the solution, washing with ethanol to obtain crude product (A), washing crude product (A), and drying to obtain ferric oxide-reduced graphene oxide composite material, where the ratio of graphene oxide, iron precursor, ethylene glycol, and polyethylene glycol is 1 g:(2-0) g:(200-800) ml:(5-20) g, (ii) immersing ferric oxide-reduced graphene oxide composite material in silver-containing precursor solution, heating, cooling, and magnetically separating to obtain crude product (B), washing crude product (B), and drying, where the ratio of silver precursor and ferric oxide-reduced graphene oxide composite material is (0.015-0.17):1.