Atomic-layered tungsten diselenide-based porous 3D architecturing for highly sensitive chemical sensors

Two-dimensional (2D) tungsten diselenide (WSe${}_2$)-based porous three-dimensional (3D) architecture is fabricated utilizing highly porous 3D alumina structures. The architecture is produced by combining a sol–gel process for fabricating porous 3D alumina and chemical vapor deposition (CVD) for the formation of WSe${}_2$. The gas-sensing performance of the porous 3D structure overcomes the limitations displayed by the gas response of a 2D WSe${}_2$-based gas sensor. This 2D nanomaterials-based porous 3D architecture is a promising approach for improving the gas response of sensing devices. (© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)