Co3O4 nanoparticles with different morphologies for catalytic removal of ethyl acetate

• Published in: Catalysis communications Vol. 156; p. 106320
• Main Authors: Zhu, Xiaofeng, Bai, Bingyang, Zhou, Bin, Ji, Shengfu
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.08.2021; Elsevier
• Subjects: Catalytic oxidation; Cobalt oxide; Ethyl acetate; Volatile organic compounds; Cobalt oxide; Volatile organic compounds; Ethyl acetate; Catalytic oxidation
• ISSN: 1566-7367; 1873-3905
• DOI: 10.1016/j.catcom.2021.106320

Nanosized Co3O4 with different morphologies (rods-like (NR-), flowers-like (NF-), cages-like (NC-) and single crystal (NP-)) were synthesized by using hydrothermal and co-precipitation methods and applied in catalytic removal of ethyl acetate (EA). Complete EA conversion under a space velocity of 30,000 mL/ (g h) are shown at 210 °C for NP-Co3O4. The results of physicochemical properties reveals that NP-Co3O4 catalyst performs the best catalytic activity for EA oxidation attributed to larger specific surface area, better low-temperature reducibility, abundant Co3+ cationic species exposed on the (220) plane and sufficiently active surface oxygen species. [Display omitted] •Co3O4 with different morphologies were prepared by using different methods.•NP-Co3O4 has the best activity for catalytic removal of ethyl acetate.•The best activity is related to more surface oxygen species and Co3+ active sites.•NP-Co3O4 has excellent reaction stability under the existence of water vapor.