School of Chemistry and Chemical Engineering;
South China University of Technology;
Guangzhou 510641;
China;
School of Environment and Energy;
South China University of Technology;
Guangzhou 510006;
China;
Hainan Tropical Ocean University;
School of Ecology and Environment;
Sanya 572000;
China;
Photocatalyst; Cr(VI); Graphene aerogel; Adsorption; Photocatalysis;