Fig. 3: Selective PEC detection of NE. | Nature Communications

Fig. 3: Selective PEC detection of NE.

From: Photoelectrochemical biosensor with single atom sites for norepinephrine sensing and brain region synergy in epilepsy

Fig. 3

Selective PEC response of NE, DA, and EP on a pristine TiO2, b Zn NPs -TiO2, and c Zn1-TiO2 (n = 3 electrodes), data are expressed as mean ± SD; d photocurrent response ratios of NE/DA and NE/EP on TiO2, Zn NPs-TiO2 and Zn1-TiO2 with different Zn single-atom content (n = 3 electrodes), data are expressed as mean ± SD; e FTIR spectra of TiO2, Zn1-TiO2, NE, NE/TiO2, and NE/Zn1-TiO2; f DFT calculations of adsorption energy of NE, DA, and EP on TiO2 and Zn1-TiO2; g PEC oxidization processes of NE on Zn1-TiO2; high-resolution XPS spectra; h Zn 2p3/2 and i Ti 2p3/2 on NE/Zn1-TiO2 before and after light irradiation; j Total density of states of Zn1-TiO2, and NE/Zn1-TiO2; k partial density of states of Zn 3d, Ti 3d, O 2p and N 2p orbitals; l DFT calculations of local charge density difference of NE/Zn1-TiO2, yellow part symbolizes local electron accumulation area and cyan part symbolizes local electron depletion area respectively; m UV-visible absorption spectra of NE before and after PEC oxidation; n LC-MS spectra of NE after PEC oxidation on Zn1-TiO2; o DFT calculations of adsorption energy of NEox on Zn1-TiO2; p MSD diagrams of NE on TiO2, NE on Zn1-TiO2 and NEox on Zn1-TiO2.

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