3D Mxene based gas sensors demonstrated a highly sensitive detection for VOCs in an ultra-wide sensing range at room temperature.

Bio-inspired beehive-like hierarchical nanoporous carbon (BHNC) with a high specific surface area of 1472 m 2 g -1 and a good electronic conductivity of 4.5 S cm -1 is synthesized by carbonizing the industrial waste of bamboo-based byproduct. The BHNC sample exhibits remarkable electrochemical performances as supercapacitor electrode material such as high specific capacitance of 301 F g -1 at 0.1 A g -1 still 10 maintaining that of 192 F g -1 at 100 A g -1 , negligible capacitance loss after 20,000 cycles at 1 A g -1 , and high power density of 26,000 W kg -1 at energy density of 6.1 Wh kg -1 based on active electrode materials in aqueous electrolyte system. Moreover, an enhanced power density of 42,000 W kg -1 at high energy density of 43.3 Wh kg -1 is obtained in ionic liquid electrolyte system, which places the BHNC-based supercapacitors in the Ragone chart among the best energy-power synergetic outputting properties in ever 15 reported for carbon-based supercapacitors.

A facile synthesis is reported of two‐dimensional (2D) bimetallic (Fe/Co=1:2) metal–organic frameworks (MOF, ca. 2.2 nm thick) via simple stirring of the reaction mixture of Fe/Co salts and 1,4‐benzene dicarboxylic acid (1,4‐BDC) in the presence of triethylamine and water at room temperature. The mechanism of the 2D, rather than bulk, MOF was revealed by studying the role of each component in the reaction mixture. It was found that these 2D MOF‐Fe/Co(1:2) exhibited excellent electrocatalytic activity for the oxygen evolution reaction (OER) under basic conditions. The electrocatalytic mechanism was disclosed via both experimental results and density functional theory (DFT) calculation. The 2D morphology and co‐doping of Fe/Co contributed to the superior OER performance of the 2D MOF‐Fe/Co(1:2). The simple and efficient synthetic method is suitable for the mass production and future commercialization of functional 2D MOF with low cost and high yield.

Fine-tuning of interfacial adhesion between fillers and polymer matrices is crucial to the separation performance of mixed matrix membranes (MMMs) and their mechanical properties.Direct incorporation of metal organic framework (MOF) particles in polymers often leads to insufficient adhesion and non-selective interfacial voids. Herein, we present a novel strategy to develop toughened MOF-polymer interface by confining a room temperature ionic liquid (IL)[bmim][Tf 2 N] into ZIF-8 cages. The diffusion of the IL out of the IL-incorporated ZIF-8