H2O activation plays a crucial role in the oxidation process of HCHO, which can create active hydroxyl to attack HCHO molecules and enhance the catalytic activity. Therefore, the construction of highly active sites for H2O activation to accelerate the reaction rate is required. Herein, we constructed and regulated the surface oxygen vacancies over epsilon-MnO2 with the aid of K doping to activate H2O through a simple hydrothermal method. The role of oxygen vacancy produced by K+ doping for H2O activation in HCHO removal was investigated by various technologies, including XPS, TPD, TPSR, and in...
