Fig. 2: Oriented regulation of the Zr-MOF membrane.
From: Metallocene-anchor inducing oriented MOF membrane for helium separation
a XRD spectrum of Zr-MOF membrane with different metallocene-anchor (x% represents the Cp2ZrCl2 concentration in precursor solution). b Effect of different ratios of ZrCl4 and Cp2ZrCl2 on the CPO index of Zr-MOF membrane. The Zr, O, and C atoms are represented by blue, red, and brown, respectively. c HRTEM image of {001}-oriented Zr-MOF membranes in along the <001> direction. GI-WAXS of (d) Zr-MOF and (e) {001}-oriented Zr-MOF membranes on silicon wafer. f Effect of the CPO index on the He/CH4 pure-gas separation performance. g He/CH4 pure-gas permeance and ideal selectivity for PI, Zr-MOF, Zr-MOP, and {001}-oriented Zr-MOF membranes.
