高分辨率透射电子显微镜
八面体
溶剂
甲醛
X射线光电子能谱
分子筛
催化氧化
化学
材料科学
催化作用
化学工程
无机化学
纳米技术
有机化学
晶体结构
透射电子显微镜
工程类
作者
Ling Zhang,Shichao Han,Yali Wu,Yuan Xie,Liang Wang,Xiangju Meng,Feng‐Shou Xiao
标识
DOI:10.1016/j.apcatb.2021.120875
摘要
Removal of formaldehyde (HCHO) has recently been attracted much attention, and completely catalytic oxidation at room temperature has been identified as one of the efficient routes for solving this problem. In this research, we show a successful preparation of Ag-loaded octahedral molecular sieve from solvent-free route (Ag/OMS-2-S), which was characterized by XRD, SEM, HRTEM, BET, XPS, ICP-OES, H2-TPR, and HCHO-TPD techniques to investigate the factors influencing the catalytic activity. Very interestingly, HCHO is completely converted into CO2 at room temperature over the Ag/OMS-2-S catalyst. To the best of our knowledge, this is the first time for complete oxidation of HCHO at room temperature over all the Ag-based catalysts. Relating to the characterizations, it is suggested that the active oxygen species play a key factor that contributes to the excellent performance of the Ag/OMS-2-S. In addition, the Ag/OMS-2-S catalyst is also very stable and selective. Combination of extraordinary activity and excellent stability of the Ag/OMS-2-S catalysts might offer an alternative way to develop new efficient catalysts for the removal of air pollutants.
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