Defect and interface control on graphitic carbon nitrides/upconversion nanocrystals for enhanced solar hydrogen production

Special Topic: Chemistry Boosts Carbon Neutrality

Open Access

Figure 2

(A) Core-level XPS spectrum of S 2p for DCN. (B) EPR spectra of BCN and DCN. (C) DOSs of DCN (insert: proposed structure of DCN; the Fermi level is defined as 0 eV). (D) UV-vis diffusion reflectance absorption spectra of BCN, DCN, NYF, and NYF-35@DCN (selected area: defect states and NIR absorption). (E) Upconversion photoluminescence spectra of NYF and NYF-35@DCN.

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