Active anatase (001)-like surface of hydrothermally synthesized titania nanotubes

作者：Chen Qiang; Mogilevsky Gregory; Wagner George W; Forstater Jacob; Kleinhammes Alfred; Wu Yue^*

来源：Chemical Physics Letters, 2009, 482(1-3): 134-138.

DOI：10.1016/j.cplett.2009.10.003

Using (31)P and (13)C NMR with DFT calculations we demonstrate the exposed surface of titania nanotubes (TiNTs) is a stable, unterminated anatase (0 0 1)-like surface and is catalytically active under ambient conditions. We find that methanol dissociatively adsorbs on the surface of TiNTs agreeing with the predicted activity of surface dissociation of organic molecules on the crystalline (0 0 1)-anatase surface. We further examined the catalytic activity of anatase power, TiNT, and nanosheets in catalytic hydrolysis of S-[2-(diisopropylamino)ethyl]-O-ethyl methylphosphonothioate (VX) via (31)P NMR and demonstrate that titanate-like nanosheets are inactive in the reaction owing to their hydroxylated (0 0 1) surface.

• 出版日期2009-11-6