Abstract
Creation of defects in metal–organic frameworks (MOFs) has been demonstrated to be of significance for many potential applications. MOF-808(Zr), as an important member of MOFs, has attracted extensive attention due to its advantages such as high stability, large surface area and pore size. Therefore, the development of defective MOF-808(Zr) is of great interest. In this contribution, we report that MOF-808(Zr) with abundant defects can be fabricated by the fracture of partial ZrO bonds in its structure by the treatment of NH4HCO3 solution. During the treatment, the effect of NH4HCO3 concentration and treatment time on the structural properties of MOF-808(Zr) was investigated. The catalytic performance of obtained materials was evaluated by the oxidative desulfurization reaction of dibenzothiophene. The results revealed that MOF-808(Zr) obtained under the conditions of 0.08 M NH4HCO3 and treatment time of 10 min exhibited superior catalytic activity (124.8 mmol/h/g) at 60 °C due to the formation of rich defect sites in MOF-808(Zr).
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