Photocatalysis attracts increasing attention because of the deteriorating environment pollution. Metal organic frameworks (MOFs) is deemed as one kind of promising modifiers to improve the photocatalytic performance of traditional semiconductors by their large BET areas. In this study, reduced graphene oxide (RGO) and Cu-BTC are utilized to decorate TiO 2 to enhance the corresponding photoactivity. Morphology of the as-prepared composite is detected by SEM and XRD curve, while the UV-and visible-light activities are estimated

Graphene aerogel (GA) and N doped GA (N-GA) are prepared by the hydrothermal method with various times, and their adsorption abilities are estimated by using gasoline, ethyl acetate, and phenol. The adopted hydrothermal reaction time inflicts a fundamental influence on the Brunauer-Emmett-Teller (BET) area and porosities of the resulting samples. Moreover, the residual amount of surface functional groups of GA and the doping ratio of the N element are also controlled by the reaction time, which enhances the interaction between the N-GA and various adsorbates as well as the adsorption capacities by the heighten polarity. The presence of the N element further enhances the obtained adsorption performances because of the increased active sites, although the BET area and porosity of the N-GA slightly decrease. The optimized sample displays high adsorption properties and potential application prospects, and the adsorption amounts of gasoline, ethyl acetate, and phenol by using N-GA-5 reach 8.4, 11.3, and 12.2 g g−1, respectively.