Strong electronic coupling of Rh-B and CeO2 regulates the catalytic properties of Rh-B/(CeO2)0.7 for hydrogen generation from hydrous hydrazine

Understanding the metal-support interaction between Rh-B and CeO 2 is essential for enhancing the efficiency of hydrogen generation from hydrous hydrazine. In this study, a series of Rh-B/CeO 2 catalysts were synthesized via a facile wet-chemical reduction method. The Rh-B/(CeO 2 ) 0.7 catalyst exhibits a remarkable 12-fold increase in turnover frequency (TOF) compared to pristine Rh-B catalyst. The strong electronic coupling between Rh-B and CeO 2 was identified as the primary factor driving this significant performance enhancement. This interaction facilitates the formation of oxygen vacancies, promoting hydrazine adsorption and subsequent cleavage of the N-H bond in N 2 H 4 * to form N 2 H 3 *. Our findings emphasize the pivotal role of support engineering in catalyst design for optimizing catalytic performance.