4.3.5 One-pot Hydrothermal Synthesis of SnO and SnO2 Nanostructures: Enhanced H2 Sensing Attributed to in-situ p-n Junctions

S. Arunkumar, Pratyay Basak, L. Satyanarayana & Sunkara V. Manorama
Herein, we present a novel hydrothermal synthetic approach for the formation of SnO/SnO2 nanorods and their assembly into micro cubes as an effective gas sensing material. The synthesized materials were characterized by powder x-ray diffraction, Micro-Raman, FT-IR, XPS, and thermogravimetry. Morphological evaluations by SEM revealed the rods of about 10 nm and cube about 6 um. Electrical characterization results attribute the enhanced hydrogen gas sensing response to the formation of SnO2/SnO local p-n junctions. Significantly...