Fig. 2: Fabrication and characterization of the PESM.
From: Polyoxometalate-based plasmonic electron sponge membrane for nanofluidic osmotic energy conversion
A The TEM image of Au@POMs. B, C HRTEM images of Au@POMs. D The HAADF-STEM image of Au@POMs and corresponding energy-dispersive x-ray (EDX) elemental mappings of Au, P and W. (scale bar is 20 nm). E UV-Vis absorption spectra of POMs, Au and Au@POMs. F FT-IR spectra of POMs and Au@POMs. G Raman spectrum of the Au@POMs in aqueous solution. H The schematic illustration of PESM. I The SEM image of the top of PESM. J SEM image of the top of PESM and EDX elemental mappings. K The SEM image of the bottom of PESM. L, M, N SEM image of the cross-section of PESM. O Contact angle of AAO and PESM. Source data are provided as a Source Data file.
