▎ 摘　　要

NOVELTY - Graphene-based metal oxide composite materials (GNPs) for adsorbing heavy metals in arsenic or lead water are a reaction product of metal salts and graphene by hydrothermal reaction. USE - Graphene-based metal oxide composite materials (GNPs) for adsorbing heavy metals in arsenic or lead water (claimed). ADVANTAGE - The adsorbent material has high surface area of adsorption, so that heavy metal adsorption capacity is high in various pH environments, and rapid adsorption. Furthermore, the adsorbent material can be synthesized using a simple method and can be reused multiple times.