Research Article
Preparation of Polyimide/Zinc Oxide Nanocomposite Films via an Ion-Exchange Technique and Their Photoluminescence Properties
Table 1
Potassium and zinc ions loadings in the PI films after KOH hydrolysis and ion exchange in aqueous Zn(NO3)2 solution.
| | Sample number | KOH treatment
time (min) | Zn(NO3)2 concentration
(mol/l) | Ion-exchange
time (min) | K+ loadings
(nmol/cm2) | Zn2+ loadings
(nmol/cm2 ) |
| | 1 | 5 | — | — | 1961 | 0 | | 2 | 5 | 0.01 | 5 | 951 | 465 | | 3 | 5 | 0.05 | 5 | 567 | 611 | | 4 | 5 | 0.20 | 5 | 479 | 702 | | 5 | 5 | 0.40 | 5 | 351 | 803 | | 6 | 30 | — | — | 10067 | 0 | | 7 | 30 | 0.40 | 60 | 585 | 3960 |
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