Preparation method for graphene/nanometer titanium dioxide composite photocatalyst

The invention relates to a preparation method for a graphene/nanometer titanium dioxide composite photocatalyst. The graphene/nanometer titanium dioxide composite photocatalyst is prepared from graphite powder, concentrated sulfuric acid, titanium trichloride, n-hexane, n-amyl alcohol and cetyltrimethylammonium bromide through a hydrothermal reaction. The preparation method provided by the invention has the advantages of simple synthesis, convenient operation, low cost and no pollution; and the prepared graphene/nanometer titanium dioxide composite photocatalyst has excellent photocatalytic performance and strong ability of degrading organic pollutants, can be cyclically used and further has the characteristics of adsorption. 本发明是涉及种石墨烯-纳米二氧化钛复合物光催化剂的制备方法，以石墨粉、浓硫酸、三氯化钛、正己烷、正戊醇、十六烷基三甲基溴化铵为原料，通过水热法反应制得石墨烯-纳米二氧化钛复合物光催化剂。本发明合成简单，操作较方便，成本低，无污染；本发明制备的石墨烯-纳米二氧化钛复合物具有优良的光催化性能，降解有机污染物的能力强，而且可以循坏利用，此外本催化剂还具有吸附的特性。