Hollow zeolite-based V-Cu bimetallic oxide catalyst for remarkable catalytic oxidation of chlorobenzene

•The Hol ZSM-5–49 with hollow nanostructure was prepared by selective etching to change the number of acid sites.•VOx and CuOx nanoparticles were encapsulated in (Cu, V)x@Hol ZSM-5-y to more oxygen vacancies and redox capacity.•The (Cu, V)x@Hol ZSM-5–49 with confinement had good catalytic degradation activity with 90% elimination of chlorobenzene at 187℃ and excellent stability.