Weishen Yang

TL;DR: The preparation of 1-nanometer-thick sheets with large lateral area and high crystallinity from layered MOFs used as building blocks for ultrathin molecular sieve membranes, which achieve hydrogen gas permeance of up to several thousand gas permeation units (GPUs) with H2/CO2 selectivity greater than 200.

TL;DR: In this article, a combined citrate-EDTA complexing method was used for the preparation of SCFO and Ba0.2O3-delta (BSCFO) oxides, and the results of O-2-TPD and XRD showed that the introduction of barium into SCFO could effectively suppress the oxidation of Co3+ and Fe3+ to higher valence states of Co4 and Fe4+ in the lattice and stabilize the perovskite structure under lower oxygen partial pressures.

TL;DR: In this paper, high quality graphene sheets were prepared from graphite powder through oxidation followed by rapid thermal expansion in nitrogen atmosphere, and the morphology and structure of the prepared graphene sheets are characterized by scanning electron microscope (SEM) and high-resolution transmission electron microscopy (HRTEM).

TL;DR: Microporous membranes with pore apertures below the nanolevel can exhibit size selectivity by serving as a molecular sieve, which is promising for overcoming Robeson s “upperbound” limits in membrane-based gas separation.

TL;DR: In this article, a novel zeolitic imidazolate framework (ZIF-7) membrane was tested for its gas separation performance and showed promising H2 separation abilities.