Cellulose Nanocrystal-Templated Tin Dioxide Thin Films for Gas Sensing.

ABSTRACT: Porous tin dioxide is an important low-cost semiconductor applied in electronics, gas sensors, and biosensors. Here, we present a versatile template-assisted synthesis of nanostructured tin dioxide thin films using cellulose nanocrystals (CNCs). We demonstrate that the structural features of CNC-templated tin dioxide films strongly depend on the precursor composition. The precursor properties were studied by using low-temperature nuclear magnetic resonance spectroscopy of tin tetrachloride in solution. We demonstrate that it is possible to optimize the precursor conditions to obtain homogeneous precursor mixtures and therefore highly porous thin films with pore dimensions in the range of 10-20 nm (A_BET = 46-64 m² g^-1, measured on powder). Finally, by

SUBMITTER: Ivanova A 

PROVIDER: S-EPMC7116275 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature