Thermal Activation of CuBTC MOF for CO Oxidation: The Effect of Activation Atmosphere

Abstract

High performance catalysts for carbon monoxide (CO) oxidation were obtained through thermal activation of a CuBTC (BTC: 1,3,5-benzenetricarboxylic acid) metal-organic framework (MOF) in various atmospheres. X-ray diffraction (XRD), X-ray photonelectron spectroscopy (XPS), N 2 adsorption-desorption measurement, and field emission scanning electron microscopy (FESEM) were adopted to characterize the catalysts. The results show that thermal activation by reductive H 2 may greatly destroy the structure of CuBTC. Inert Ar gas has a weak influence on the structure of CuBTC. Therefore, these two catalysts exhibit low CO oxidation activity. Activating with O 2 is effective for CuBTC catalysts, since active CuO species may be obtained due to the slight collapse of CuBTC structure. The highest activity is obtained when activating with CO reaction gas, since many pores and more effective Cu 2 O is formed during the thermal activation process. These results show that the structure and chemical state of coordinated metallic ions in MOFs are adjustable by controlling the activation conditions. This work provides an effective method for designing and fabricating high performance catalysts for CO oxidation based on MOFs.

An Insight on the Electrocatalytic Mechanistic Study of Pristine Ni MOF (BTC) in Alkaline Medium for Enhanced OER and UOR

“…[61] The other peaks identified in the lower regions (below 300 cm À1 ) are unpredictable as per our knowledge and the literature. [47,63,64] Figure 2 shows the optical photographs of NiO WCP and Ni MOF and SEM images of Ni MOF. [35,61] Figure S2 in ESI and Figure 1d-f shows the survey and deconvoluted XPS spectra of Ni MOF.…”

Voltammetric Sensing of Caffeine in Food Sample Using Cu‐MOF and Graphene

“…In order to bring the MOFs materials for electrochemical sensor application with good analytical performance, MOFs are blended with some conducting materials like carbon, conducting polymers and etc. [24][25][26][27][28]. It is well-known that graphene is 2D materials, which attracted several potential applications due to their high electrical conductivity and surface area [29].…”

Preparation of Cationic MOFs with Mobile Anions by Anion Stripping to Remove 2,4-D from Water

“…Metal-organic frameworks (MOFs), which are formed by using a pre-formed organic linker with a metal ion or cluster, are a class of supramolecular material. Owing to their unique structure and properties such as coordination with unsaturated metal sites, good thermal stability, high surface area, and adjustable pore size, as well as their ability to modify their pore surfaces, MOFs have been widely used in gas storage [ 9 ] and separation [ 10 ], catalysis [ 11 ], drug delivery [ 12 ], molecular sensing [ 13 ], and photoelectron chemistry and electro-chemistry [ 14 ]. MOFs have also been used for removing various hazardous substances from the environment.…”