Nanostructured Sheets of TiO Nanobelts for Gas Sensing and Antibacterial Applications

Yanmin Wang, Guojun Du, Hong Liu, Duo Liu, Shubin Qin, Na Wang, Chenguo Hu, Xutang Tao, Jun Jiao, Jiyang Wang,

Advanced Functional Materials · 2008 · 262 citations · 33 references

Concepts

Abstract

Abstract Three types of TiO‐compound‐based nanobelts (Na 2 Ti 3 O 7 , H 2 Ti 3 O 7 , TiO 2 ) are prepared from commercial TiO 2 powders via an alkaline hydrothermal process. Nanostructured sheets based on the as‐synthesized nanobelts are prepared using a paper‐making process. The nanobelts are connected with hydrogen bonds or/and bridge oxygen atoms and packed together, forming a paperlike porous network structure, with an average pore size of ∼500 nm. The electrical properties and gas sensing of the nanostructured sheets are demonstrated to display sensitivity down to sub‐ppb levels. H 2 Ti 3 O 7 nanobelts decorated with Ag nanoparticles have also been applied as an antibacterial agent.

References

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