Fig. 6From: New Immunosensing-Fluorescence Detection of Tumor Marker Cytokeratin-19 Fragment (CYFRA 21-1) Via Carbon Quantum Dots/Zinc Oxide NanocompositeX-ray photoelectron spectroscopy (XPS) spectra of a CQDs, b ZnO, and c CQDs/ZnO nanocompositeBack to article page