Plasmon photothermal-promoted solar photocatalytic hydrogen production over a CoCr₂O₄/g-C₃N₄heterojunction

Abstract

It is an effective method to promote the activity of photocatalysts by using its own photothermal effect to increase the temperature of the reaction center and thus accelerate the kinetic...

Triptycene-Based Polymer-Incorporated CdxZn1–xS Nanorod with Enhanced Interfacial Charge Transfer for Stable Photocatalytic Hydrogen Production in Seawater

“…As seen in Figure c, a strong emission peak of Cd 0.6 Zn 0.4 S occurs at around 571 nm with an excitation wavelength of 480 nm, which is consistent with the UV–vis results . The peak position of the composite catalyst is nearly identical to that of Cd 0.6 Zn 0.4 S, but the peak intensity is significantly lower than that of Cd 0.6 Zn 0.4 S, indicating that the formed heterostructure could facilitate charge separation and promote the electron migration in the interface between two catalysts. − To study further the effect of average decay lifetime on photocatalytic performance, the TRPL spectra of Cd 0.6 Zn 0.4 S and TCP@CZS catalysts were examined to evaluate the exciton dynamics . The decay curves of Cd 0.6 Zn 0.4 S and TCP@CZS catalysts are fitted by the double exponential function, as shown in Figure d, and the average fluorescence lifetime of Cd 0.6 Zn 0.4 S is 1.99 ns, which is longer than that of TCP@CZS (1.18 ns), indicating that the reduced lifetime of TCP@CZS is related to the effective charge-transfer process in the composite …”

Anchored Cu single atoms on porous g-C3N4 for superior photocatalytic H2 evolution from water splitting

“…[6][7][8] However, the photocatalytic activity of pristine bulk g-C 3 N 4 (BCN) is quite low owing to the fast charge recombination and low specic surface area (SSA), 9 which greatly hinders its industrial application. To improve the photocatalytic activity, numerous research on the modication of BCN has been carried out, including ion doping, 10 morphology controlling, 11,12 hydrogenated, 13 heterostructure constructing, [14][15][16][17] magnetic-eld-promoted photocatalytic, 18 precious metal loading, 19 etc. Recently, single-atom catalysts (SACs) for photocatalytic H 2 evolution have drawn tremendous attention for the maximum utilization of atoms and high efficiency of photo-generated charge separation.…”

The 2D van der Waals heterojunction MoC@NG@CN for enhanced photocatalytic hydrogen production

“…8 The dynamics of photogenerated exciton dissociation were determined by photoluminescence (PL) spectroscopy and the time-resolved photoluminescence (TRPL) decay spectrum. 56,57 As shown in Fig. 4e, CN displays an intense PL intensity, manifesting serious radiative recombination of charge carriers.…”