Metal-Organic Framework-Derived Hollow CoMn2O4 Nanocube Catalysts for Deep Toluene Oxidation
ACS APPLIED NANO MATERIALS(2022)
摘要
Designing unique nanostructures and components for catalysts can promote the deep catalytic degradation of volatile organic compounds into CO2. Herein, a pyrolysis strategy for MOF-based oxides (Mn-3[Co(CN)(6)](2)center dot nH(2)O) was employed to successfully synthesize oxygen vacancy-enriched Mn-Co spinel oxides with hollow nanocube structures (denoted as MOF-CMO/400). Compared with CoMn2O4 nanoparticles prepared by the traditional precipitation method, MOF-CMO/400 presented a T-90 of 209 degrees C for toluene catalytic oxidation, which was 38 degrees C lower than that of CoMn2O4 nanoparticles (247 degrees C). Especially in a high-temperature region, MOF-CMO/400 nanocubes possessed a narrower temperature range to achieve 100% toluene conversion than CoMn2O4 nanoparticles. The excellent catalytic activity of MOF-CMO/400 is mainly attributed to the three-dimensional hollow structure, more oxygen vacancy defects, longer Mn-O bonds, and abundant active oxygen species. Furthermore, MOF-CMO/400 nanocubes displayed good humidity resistance (above 5-10 vol % H2O). Therefore, the nanocatalyst with a distinctive structure and defects has great potential in industrial application for deep toluene oxidation.
更多查看译文
关键词
Mn-Co spinel oxides, MOFs, hollow structure, oxygen vacancy, toluene oxidation
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要