Ion-exchangeable thin films derived from a layered titanate, Cs0.68Ti1.83□0.17O4 (□:vacancy)
Ion-exchangeable thin films derived from a layered titanate, Cs0.68Ti1.83□0.17O4 (□:vacancy)
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由层状钛酸盐衍生的离子交换薄膜 Cs0.68Ti1.83□0.17O4（□：空位）
DOI：
10.1039/b007150l
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发表时间：
2001
影响因子：
3.3
通讯作者：
M. Yoshimura
中科院分区：
文献类型：
--
作者：
T. Sumida;Yoshiko K. Takahara;R. Abe;M. Hara;J. Kondo;K. Domen;M. Kakihana;M. Yoshimura
Cs0.68Ti1.83□0.17O4制备的质子交换层状钛酸酯在乙胺溶液中剥离
通过 Cs+ 离子交换为乙铵离子 (C2H5NH3+)，然后无限膨胀。层间含有乙铵离子的剥离层状钛酸盐片组成的薄膜表现出离子交换能力；在氯化物水溶液中可以用各种阳离子取代乙铵离子
且不破坏薄膜结构。原来的Cs0.68Ti1.83□0.17O4薄膜被Cs+交换薄膜取代，其热稳定性高达873 K。均匀着色的薄膜
还通过使用烷基铵插层前体插层染料分子来制备。从传输
电子显微镜（TEM）观察发现
剥离的片材不是单层的，而是由大约10层组成。
A proton-exchanged layered titanate prepared from Cs0.68Ti1.83□0.17O4 was exfoliated in ethylamine solution
through an ion-exchange of Cs+ to ethylammonium ion (C2H5NH3+) followed by infinite swelling. Thin films composed of the exfoliated layered titanate sheets with ethylammonium ions in the interlayer space showed ion-exchange capability; it was possible to replace the ethylammonium ions with various cations in aqueous chloride solutions
without destroying the thin film structure. The original Cs0.68Ti1.83□0.17O4 thin film was replaced by a Cs+-exchanged film, which showed thermal stability up to 873 K. Homogeneously colored thin films were
also prepared by intercalation of dye molecules using alkylammonium-intercalated precursors. From transmission
electron microscopy (TEM) observation, it was found that
the exfoliated sheets were not monolayers but consisted of about 10 layers.