The porous property of the

2.3. Preparation of gas sensor
3. Results and discussion
Fig. 1. XRD pattern of as-prepared porous Co3O4.Figure optionsDownload full-size imageDownload as PowerPoint slide
Fig. 2. Raman spectrum of as-prepared porous Co3O4.Figure optionsDownload full-size imageDownload as PowerPoint slide
The morphology of as-synthesized material was characterized by SEM and shown in Fig. 3. The as-synthesized powder shows A 784168 coral-like structure at low and high magnification (Fig. 3(a) and (b)). The coral-like structure with a abiogenesis size of tens of micrometers consists of interconnected spherical particles forming a meso- and macroporous structure with typical bimodal porous morphology, in which the walls of the macropores contain smaller mesopores. The Co3O4 nanoparticles were irregular particle with uniform particle size distribution.
Fig. 3. (a) Low-magnification and (b) high-magnification SEM images of 3D meso- and macroporous coral-like Co3O4.Figure optionsDownload full-size imageDownload as PowerPoint slide