Mesoporous In2O3 structures: Hydrothermal synthesis and enhanced Cl2 sensing performance

Pei Li, Huiqing Fan, Yu Cai

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

A facile hydrothermal route was employed to synthesize the mesoporous In2O3 structures including nanorod, nanocube, and microcube with Span-40 as surfactant. The morphologies feature of the mesoporous In2O3 structures consisted of rectangular-like and irregular-shaped cubes with porous surfaces, and the amount of Span-40-added significantly affected the overall morphology. The BET results verified the porous architectures and large BET surface area of the mesoporous In2O3 structures (sample S5), which contributed to an improvement in gas sensing characteristics. Furthermore, the gas sensing characteristics of the obtained products were studied. The results demonstrated that the sensors based on Span-40-added In2O3 structures exhibited a much higher response to Cl2 than those without span-40, and the 1.5mmol Span-40-added structures (S5) showed the highest response of 28.7±4.1 for 5ppm Cl2. The quick response-recovery behavior and excellent stability imply good potential for practical applications. Finally, the gas sensing mechanism was studied.

Original languageEnglish
Pages (from-to)109-116
Number of pages8
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume453
Issue number1
DOIs
StatePublished - 5 Jul 2014

Keywords

  • BET surface area
  • Hydrothermal synthesis
  • Mesoporous structures

Fingerprint

Dive into the research topics of 'Mesoporous In2O3 structures: Hydrothermal synthesis and enhanced Cl2 sensing performance'. Together they form a unique fingerprint.

Cite this