Figure S1 Schematic illustration of the fabrication process for the NTP/C-P and NTP/C-F. Figure S2 (a) FESEM image and (b, c) TEM images of NTP/C-F precursor. Figure S3 FESEM images of NTP precursors prepared with different solvothermal reaction time: (a, b) 2 h, (c, d) 3 h, (e, f) 4 h, (g, h) 8 h. Figure S4 (a) SEM image, (b) TEM image, (c) EDS elemental mappings, and (d) EDS spectrum of the residual carbon skeleton after etching the NTP from NTP/C-F. Figure S5 The XRD pattern of NTP/C-P. Figure S6 (a) TEM image, (b) HRTEM image, and (c) EDS elemental mappings of NTP/C-P. Figure S7 (a) spectra and (b) TGA curves of NTP/C-F and NTP/C-P. Figure S8 XPS spectra of the Ti 2p3/2 core level region of NTP/C-F.
Figure S1 Schematic illustration of the fabrication process for the NTP/C-P and NTP/C-F. Figure S2 (a) FESEM image and (b, c) TEM images of NTP/C-F precursor. Figure S3 FESEM images of NTP precursors prepared with different solvothermal reaction time: (a, b) 2 h, (c, d) 3 h, (e, f) 4 h, (g, h) 8 h. Figure S4 (a) SEM image, (b) TEM image, (c) EDS elemental mappings, and (d) EDS spectrum of the residual carbon skeleton after etching the NTP from NTP/C-F. Figure S5 The XRD pattern of NTP/C-P. Figure S6 (a) TEM image, (b) HRTEM image, and (c) EDS elemental mappings of NTP/C-P. Figure S7 (a) spectra and (b) TGA curves of NTP/C-F and NTP/C-P. Figure S8 XPS spectra of the Ti 2p3/2 core level region of NTP/C-F.
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