Copper oxide nanostructures with nanoneedles shape obtained by direct reaction with nitrogen-doped carbon quantum dots: development of an electrochemical sensor to glyphosate

Non-enzymatic biosensor based on F,S-doped carbon dots/copper nanoarchitecture applied in the simultaneous electrochemical determination of NADH, dopamine, and uric acid in plasma

“…The Cu(NO 3 ) 2 precursor spectrum (figure not showed) presented two main bands at 241 and 270 nm, referring to the O 2− (2p) → Cu 2+ (3d) transitions. 17 Fig. 1c shows the XPS spectra obtained, after deconvolution, from the F,S-doped carbon dots/copper nanoarchitecture.…”

“…The Cu(NO 3 ) 2 precursor spectrum (figure not showed) presented two main bands at 241 and 270 nm, referring to the O 2− (2p) → Cu 2+ (3d) transitions. 17…”

“…Copper nanomaterials are used in developing electrochemical sensors due to their excellent conductivity, incomplete d-orbital, electrocatalytic properties due to acid/base properties, and the possibility of forming copper-based nanostructures with different oxidation states. 16,17 Besides that, copper nanomaterials are present in many proteins (metalloproteins), promoting good electron transference, 18 and CuO nanohybrid presented good performance in developing electrochemical sensors. 17 So, this work describes the development of an innovative non-enzymatic biosensor through F,Sdoped carbon dots/CuNP nanostructures.…”

“…16,17 Besides that, copper nanomaterials are present in many proteins (metalloproteins), promoting good electron transference, 18 and CuO nanohybrid presented good performance in developing electrochemical sensors. 17 So, this work describes the development of an innovative non-enzymatic biosensor through F,Sdoped carbon dots/CuNP nanostructures.…”