Figure 18.

(Color online) ¹H/¹³C cross-polarization MAS NMR spectrum of 1-¹³C-ethanol dosed onto a sample of titania (anatase) nanoparticles, exhibiting two bonding environments for the ethanol molecules reacted with the anatase surface. Data were obtained at a ¹³C resonance frequency of 188.657 MHz, and a ¹H resonance frequency of 750.198 MHz with TPPM ¹H decoupling after a 2 ms cross-polarization contact time, using a ¹H 90° pulse of 6.5 μs and a 5 s recycle delay. A total of 8192 transients were collected, and the data processing included 50 Hz of Lorentzian broadening.