Fig. 1
From: In vivo guiding nitrogen-doped carbon nanozyme for tumor catalytic therapy

Morphology and N doping analysis of N-PCNSs. a HRTEM image of N-PCNSs-3. Scale bar: 100 nm. b Schematic model of nitrogen and oxygen containing surface functionality in N-PCNSs-3. c XPS survey spectra of N-PCNSs-3. d N 1 s core-level XPS spectra of N-PCNSs-3. e O 1 s core-level XPS spectra of N-PCNSs-3