fig2
![Photo-coupled electrocatalytic oxygen reduction to hydrogen peroxide using metal-free CNT-threaded oxidized g-C<sub>3</sub>N<sub>4</sub>](https://image.oaes.cc/1a5e196d-ac48-4d66-9ef9-36fb95bf412c/5062.fig.2.jpg)
Figure 2. A-B: SEM images of OCN/CNTs (inset: corresponding size distribution histogram of OCN-NPs). C-D: TEM images of OCN/CNTs (inset: SAED image for OCN/CNTs). E: HRTEM image of OCN/CNTs. F-G: Lattice spacing for g-C3N4 and CNTs. H: HAADF image of OCN/CNTs and corresponding EDS mapping images for C, N and O elements.