sp3-like defect structure of hetero graphene-carbon nanotubes for promoting carrier transfer and stability

Titanium Vacancies in TiO2 Nanofibers Enable Highly Efficient Photodriven Seawater Splitting

“…In addition, the electrochemical impedance spectroscopy (EIS) is further studied (Figure S21) to evaluate the charge transfer process at the interface. [46] Before irradiation, the EIS Nyquist plot of V Ti -TiO 2 displays a similar semicircle with crystalline TiO 2 , thus indicating that the resistance (R ct ) of the charge transfer to the solution is almost the same. The R ct of V Ti -TiO 2 is significantly decreased after illumination compared with crystalline TiO 2 .…”

Efficient Water Dissociation on Confined Ultrafine Pt via Pyridinic N-Enhanced Heavy d−π Interaction

“…Raman spectra were employed to investigate the π site in Pt–N@NPC-800. As illustrated in Figure S3, the D peak at 1334 cm –1 corresponds to the disordered carbon or defects and edges of sp 3 carbon, whereas the G peak at 1586 cm –1 is assigned to the ordered sp 2 carbon . The intensity ratio of the D band and the G band ( I D : I G ) of Pt–N@NPC-800 is 0.95, which is lower than that of Zn@NPC-800 (1.08), indicating the enhanced π sites in Pt–N@NPC-800.…”

Design and synthesis of TiO2/C nanosheets with a directional cascade carrier transfer

“…13 C cross-polarization/magic-angle spinning NMR is an effective method to investigate carbon species comprehensively and quantitatively. 22–24 For comparison, TiO 2 mainly with surface carbon (named TiO 2 /C Surf , by calcination from Ti-G at 350 °C in an Ar atmosphere) is also characterized. Ti-G shows three well resolved peaks between 69 and 90 ppm (Fig.…”