Decorating titanate nanotubes with protonated 1,2,4-triazole moieties for anhydrous proton conduction

Wei Li; Xinmiao Liang; Huifang Niu; Zhengkai Tu; Jiwen Feng; Mu Pan; Haining Zhang

doi:10.1016/j.jcis.2014.07.010

Decorating titanate nanotubes with protonated 1,2,4-triazole moieties for anhydrous proton conduction

J Colloid Interface Sci. 2014 Oct 15:432:26-30. doi: 10.1016/j.jcis.2014.07.010. Epub 2014 Jul 11.

Authors

Wei Li¹, Xinmiao Liang², Huifang Niu¹, Zhengkai Tu³, Jiwen Feng², Mu Pan⁴, Haining Zhang⁵

Affiliations

¹ State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China.
² Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, Wuhan 430071, China.
³ State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China. Electronic address: [email protected].
⁴ State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China; Hubei Key Laboratory of Fuel Cells, Wuhan University of Technology, Wuhan 430070, China.
⁵ State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China; Hubei Key Laboratory of Fuel Cells, Wuhan University of Technology, Wuhan 430070, China. Electronic address: [email protected].

PMID: 25080383
DOI: 10.1016/j.jcis.2014.07.010

Abstract

Anhydrous proton conducting materials based on surface attachment of protonated 1,2,4-triazole moieties on titanate nanotubes are prepared through self-assembly technique. (1)H MAS NMR spectra have revealed that the triazole moieties located at the outer surface of nanotubes. The distance between two ionic groups at the surface is observed to be shorter than 1nm, which may facilitate the formation of continuous proton conducting domains, leading to easy proton transport through segmental motion and structural re-organization in the absence of water. The maximum proton conductivity of the synthesized materials reaches about 2.4×10(-3)Scm(-1) at 160°C under anhydrous conditions.

Keywords: Nuclear magnetic resonance; Proton conductivity; Surface attachment; Titanate nanotubes; Triazole.