Hyperpolarized 129Xe NMR Study of TiO2 Nanotubes

Bulletin of the Korean chemical society

Vandana Mehrotra¹  Hae Jin Kim¹  Hee Cheon Lee¹  Sang Man Lee¹  Soon Chang Lee¹ 

关键词: NMR;    Hyperpolarization;    Xenon;    TiO2;    Nanotubes;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

A continuous flow hyperpolarized (HP) 129Xe NMR spectroscopy was employed for the first time to investigate TiO2 nanotubes (Ti-NTs) synthesized from commercial nanoparticles with different reaction times. A single peak attributing to channels for Ti-NTs was observed for variable temperature HP 129Xe NMR spectra. It was also noted that there is alteration in value for heat of adsorption, ΔH from 12.6 ± 1.3 to 16.4 ± 0.4 kJ/mol and variation in chemical shift of the xenon adsorbed in channels, δs from 120 ± 2 ~ 135 ± 9 ppm which were closely correlated to channel length and it was shown that P25-24 Ti-NTs with longest channel is most favorite Ti-NTs for Xe adsorption.

【 授权许可】

Unknown