Highly efficient Au/Fe2O3 for CO oxidation: The vital role of spongy Fe2O3 toward high catalytic activity and stability

Supported gold catalysts have drawn great attention for many decades due to their outstanding performance in remedying the environment from carbon monoxide (CO) pollution. In this study, due to the large surface area of spongy Fe₂O₃, fabricated by salt-assisted ultrasonic spray pyrolysis, a considerable amount of Au was loaded on spongy Fe₂O₃ compared to low-surface-area non-spongy Fe₂O₃. It is seen that the spongy Fe₂O₃ catalyst loaded with Au has an interface that can be extremely active for CO desorption and O₂ activation. That means it has high catalytic activity in CO oxidation than non-spongy and low surface area Fe₂O₃ loaded with Au. Also, the incorporation of Au in low alkaline condition further enhances the interaction between Au and Fe₂O₃, providing more active sites. This made the catalyst to have better activity, good stability over 60 hrs, and there was no carbonate on its surface. It had full conversion at 30 °C on 120 L g^-1h^-1 with high TOF (2.2 s^-1).

Development of advanced materials for cleaner energy generation through fuel cells

The use of fuel cells in the transportation sector holds promise as a sustainable option for the generation of cleaner energy along with cumulative lesser GHG emissions.

Experimental and computational studies on copper–cerium catalysts supported on nitrogen-doped porous carbon for preferential oxidation of CO

Geometric characteristics improve the synergy between Cu2⁺/Cu⁺ and Ce4⁺/Ce3⁺ couples.

CeO2 supported low-loading Au as an enhanced catalyst for low temperature oxidation of carbon monoxide

A series of low loading and high activity Au/CeO₂ supported catalysts were synthesized using a coprecipitation method. Au/CeO₂ catalysts with a low Au content (0.2 wt%) showed extremely high activity for CO oxidation with 100% conversion of CO around 60 °C.