Synthesis of porous rod-like In2O3 nanomaterials and its selective detection of NO at room temperature

The construction of gas sensors with excellent gas sensitivity and low operating temperature is of great importance while challenging. In this work, using indium nitrate, urea, and sucrose as precursors, In2O3 nanomaterials with the porous rod-like structure were prepared via hydrothermal method combined with high-temperature calcination. FTIR and TGA methods verified the growth process of porous rod-like In2O3 nanomaterials. Significantly, due to the doping of carbon in In2O3, the sensor based on porous rod-like In2O3 nanomaterials showed an enhancement response to NO at room temperature. The porous structure of In2O3 nanomaterials facilitates the diffusion of gas, shortening the response time. The developed materials provide insight into the fabrication of porous nanomaterials and the detection of NO at room temperature. (C) 2022 Elsevier B.V. All rights reserved.

Automated summary

In this work, porous rod-like In2O3 nanomaterials were prepared using hydrothermal method combined with high-temperature calcination, and the sensor based on these materials showed enhanced response to NO at room temperature due to carbon doping. This study provides new insights into the fabrication of porous nanomaterials and the detection of NO at room temperature.