(510e) Electrochemical Ozone Generation Using Partially Reduced Tin Oxide | AIChE

(510e) Electrochemical Ozone Generation Using Partially Reduced Tin Oxide

Authors 

Tang, M., Drexel University
Within the realm of electrochemical water treatment methods, the 6-e- electrochemical ozone production (EOP) reaction holds significant promise. EOP facilitates the on-site generation of ozone (O₃), a potent oxidant with minimal environmental impact compared to traditional disinfectants such as chlorine. While nickel and antimony-doped tin oxide (Ni/Sb-SnO2) has been established as a highly selective catalyst for EOP under standard operating conditions, prior research suggests that the primary function of antimony (Sb) is to enhance electrical conductivity, not directly contribute to the catalytic activity. Intriguingly, the incorporation of n-type dopants, such as Sb, can lead to catalyst instability.

This study explores a promising alternative strategy to n-type doping: partial reduction of tin oxide itself. Through this approach, we aim to achieve the desired conductivity enhancement without incurring the drawbacks associated with destabilization often observed with traditional n-type doping methods. By employing a combination of electroanalysis and spectroscopic techniques for O3 detection, we validate the selectivity of partially reduced tin oxide catalysts towards EOP. Furthermore, rigorous stability assessments are implemented to thoroughly evaluate the performance of this novel catalyst. The findings presented herein establish a robust framework for the development of improved EOP catalysts with superior performance characteristics. This advancement has the potential to pave the way for significant progress in the field of electrochemical water treatment technology.