High-performance potassium poly(heptazine imide) films for photoelectrochemical water splitting

Abstract

Photoelectrochemical (PEC) water splitting is an appealing approach to convert solar energy into hydrogen fuel. Broad interests have recently received to develop polymeric semiconductor for PEC water splitting. The crystallinity...

Efficient Water Cleaning by Self‐standing Carbon Nitride Films Derived from Supramolecular Hydrogels

“…The Tauc plots (Figure S8) of CBMA500, CBMA550, and CBMA600 reveal optical band gaps of 1.9 eV, 1.7 eV, and 1.6 eV, respectively-substantially narrower than that of conventional carbon nitride (2.7 eV). The flat band potentials shown at Figure S9-10 (Determined by Mott-Schottky electrochemical measurements [57][58] ) indicate that the prepared materials display a conduction band negative enough to drive the hydrogen evolution reaction. The charge separation efficiency of the photogenerated electron-hole pairs of the asobtained samples was studied by measuring the generated photocurrent in a standard water-splitting photoelectrochemical cell.…”

Energy bands matched photocatalysis enhancement based on viologen derivatives electron-transfer-mediator

“…R ct refers to the charge transfer resistance from the surface to solution. 38 It was obvious that R ct decreased after CBV molecules were added into the o-CTF + 1%Pt system under both dark and illumination conditions. All of these results suggested that the CBV molecule had electron transfer ability and could enhance the electron migration rate.…”

Synergetic effect of photocatalysis and peroxymonosulfate activated by MFe2O4 (M = Co, Mn, or Zn) for enhanced photocatalytic activity under visible light irradiation

“…A smaller arc radius of the EIS Nyquist plot represents a faster electron transfer rate and a more efficient electron–hole separation. 41 Fig. 8e shows the EIS response of CoFe 2 O 4 under visible light irradiation ( λ > 420 nm).…”