The photocatalytic destruction of cimetidine using microwave-assisted TiO 2 photocatalysts hybrid system.

•The cimetidine was decomposed efficiently by the hybrid TiO2 photocatalytic system.•Increasing the microwave intensity increased the rate of CMT degradation rate.•Increasing the pH increased the rate of CMT degradation rate.•There is an optimal condition for DO concentration in the decomposition reaction of CMT.•CMT was mineralized through three kinds of reaction intermediate products.