|
KMID : 0385520080210010058
|
|
Analytical Science & Technology
2008 Volume.21 No. 1 p.58 ~ p.63
|
|
|
Characterization of TMA-A zeolite incorporated by ZnO nanocrystals
|
|
Lee Seok-Ju
Lim Chang-Sung
Kim Ik-Jin
|
|
|
Abstract
|
|
|
|
Nano-sized ZnO crystals were successfully incorporated using ion exchange method in TMA-A zeolite synthesized by the hydrothermal method. The optimal composition for the synthesis of TMA-A zeolite was resulted in a solution of Al (i-pro)₃: 2.2 TEOS : 2.4 TMAOH : 0.3 NaOH : 200 H₂O. 0.3 g of TMA-A zeolite and 5 ㏖ of ZnCl₂solution were employed for the preparation of ZnO incorporated TMA-A zeolite. The crystallization process of ZnO incorporated TMA-A zeolite was analyzed by X-ray diffraction (XRD). The incorporated nano-sized ZnO crystals and the crystallinity of TMA-A zeolite were evaluated by transmission electron microscopy (TEM) and high resolution transmission electron microscopy (HRTEM). The size of the incorporated nano-sized ZnO crystals was 3~5 ㎚, while the TMA-A zeolite was 60~100 ㎚. The bonding structure and absorption of the ZnO incorporated TMA-A zeolite were compared with the ZnO and TMA-A zeolite by the FT-IR analysis. Subsequentlly, the ZnO incorporated TMA-A zeolite showed the photoluminescent characteristics on the wavelengths of 330~260 ㎚ and 260~230 ㎚ by measurement of UV spectrophotometer.
|
|
|
KEYWORD
|
|
|
ZnO, TMA-A zeolite, nanosize, incorporation, photoluminescency
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|