Abstract
High-speed migration of charge carriers and their efficient separation are effective ways to improve photocatalytic purification of environmental pollutants. Herein, CeO2/Bi5O7I porous nanoflower heterostructures were systematically designed and synthesized for Hg0 removal from coal-fired flue gas. In addition, during the photocatalytic reaction, the Ce3+/Ce4+ redox center acts as an electron capture center, which facilitates the activation of molecular oxygen and promotes the separation of charge carriers. Meanwhile, in the Z-scheme system, the internal electric field drives the accelerated transport of charge carriers, which further enhances the separation efficiency of charge carriers. Based on the above optimization, the CeO2/Bi5O7I porous nanoflower heterostructures have the best reaction rates, which are 3.02 and 2.55 times better than single-component CeO2 and Bi5O7I, respectively. This research supplies a sustainable solution for the purification of coal-fired flue gas pollutants.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
