▎ 摘　　要

A facile method was employed to prepare stable monolayer and few-layer graphene (ASG) nanosheets by loading on nanosilica substrates. The adsorption capability of ASG was enhanced by a factor of up to 102 for phenanthrene compared with pristine graphene, which was higher than that in previous reports for nanomaterials. Interaction mechanisms of monolayer graphene with organic solutes were discussed.