Tuning metal sites of DABCO MOF for gas purification at ambient conditions

Bimetallic organic frameworks derived CuNi/carbon nanocomposites as efficient electrocatalysts for oxygen reduction reaction

“…3b indicates that the pores in CuNi-DABCO-80 are generally within the micropore range, with diameters smaller than 3 nm. The bimetallic MOF reaches a surface area of 289.4 m 2 g −1 , which is one order smaller than that reported for Cu-DABCO and Ni-DABCO in the reference work [43]. A possible explanation could also be the introduction of the second metal element and, therefore, the distortion of the framework structure.…”

“…All the precursors were synthesized by a solvothermal method based on the reported study [43] with modification. As the molar ratio of Cu/Ni increased, the obtained CuNi/C experienced a gradual color evolution from cyan to light green (Fig.…”

“…The temperature was selected to both completely decompose the MOF framework [43] and avoid further agglomeration or particle size growth [44]. The SEM images of CuNi/C-80 (Fig.…”

“…The synthesis of Cu-DABCO and Ni-DABCO were based on the previous study [43]. The fabrication of bimetallic precursors CuNi-DABCO-n involved certain modification.…”

“…Bearing this in mind, we successfully synthesized a series of bimetallic MOFs based on previous work [43], with different ratios of Cu/Ni (denoted as CuNi-DABCO-n, where n refers to the copper concentration in the metal components). These CuNi-DABCOs served as precursors to bimetallic carbon nanocomposites (CuNi/C-n, where n again refers to Cu content), and a simple pyrolysis helped all the MOF-derived CuNi/C-n inherit porous carbon from the precursor to provide a large surface area and high graphitization degree.…”