Controllable structure of fibrous SiO2–ZSM-5 support decorated with TiO2 catalysts for enhanced photodegradation of paracetamol

•Desilication and dealumination increased proportionally with the amount of TEAP.•Increased TEAP formed more micro- and mesopores but lowered the degradation.•Isomorphously substituted Ti4+ maintained the charge neutrality in FSZ framework.•Decreasing the number of OV and TSD also proved the charge neutrality.•The highest number of SiOTi bond gave the highest degradation activity (96%).