Insight into the Effect of Oxygen Vacancy Prepared by Different Methods on CuO/Anatase Catalyst for CO Catalytic Oxidation

In this study, CuO loaded on anatase TiO2 catalysts (CuO/anatase) with oxygen vacancies was synthesized via reduction treatments by NaHB4 and H2 (CuO/anatase-B, CuO/anatase-H), respectively. The characterizations suggest that different bring concentration of in the CuO/anatase catalysts, which finally affect CO catalytic performance. CuO/anatase-B CuO/anatase-H exhibit conversion 90% at 182 198 °C, respectively, is lower than what occurred for (300 °C). XRD, Raman, EPR results show amount largest, indicating a stronger effect surface. situ DRIFTS Cu sites are adsorption CO, can active O2 molecules into reactive species. According to results, it be concluded oxidation reaction, only catalyst carried out Mvk mechanism, greatly improves its efficiency. This study explained reaction mechanisms various surfaces, offers detailed insights how prepare suitable low-temperature reactions.