Synthesis of ZnO hollow spheres through a bacterial template method and their gas sensing properties

摘要

In this report, ZnO hollow spheres were synthesized by an economic and environment-friendly bacterial template method. The hollow spheres resembled the morphology of the bacterial templates with multilayered porous shells. Their sensing properties were investigated with CO_3O_4 incorporation. The response of the spheres was enhanced from 8-11 to 38-49 to 100 ppm acetone with CO_3O_4 incorporation, and the response and recovery time were shortened from 10-12s and 61-79s to 1.2-1.9s and 27-48 s, respectively.