Fig. 2.

The morphology of HsGDY thin film. a, b The TEM images of HsGDY, and c the cross-section TEM images of HsGDY. d, e The SEM images of HsGDY and f the cross-section SEM images of HsGDY. g Nitrogen adsorption-desorption isotherm and h, i the corresponding DFT incremental pore size distribution curve for HsGDY. Scale bar, 200 nm, a; 50 nm, b; 500 nm, c, e; 2 μm, d, f