Graphene Quantum Dots Nanoantibiotic‐Sensitized TiO2−x Heterojunctions for Sonodynamic‐Nanocatalytic Therapy of Multidrug‐Resistant Bacterial Infections

The exploration of sonodynamic therapy (SDT) as a possible replacement for antibiotics by creating reactive oxygen species (ROS) is suggested as a non-drug-resistant theranostic method. However, the low-efficiency ROS generation and complex tumor microenvironment which can deplete ROS and promote tumor growth will cause the compromised antibacterial efficacy of SDT. Herein, through an oxygen vacancy engineering strategy, TiO