Turbostratic carbon nitride enhances the performance and stability of cadmium sulfide nanorod hydrogen evolution photocatalysts

Abstract

The t-CNx layer functions as (1) a protection layer to isolate CdS from the electrolyte and (2) as a tunnel junction to promote charge separation.

Downshifted d‐Band Center of Ru/MWCNTs by Turbostratic Carbon Nitride for Efficient and Robust Hydrogen Evolution in Alkali

“…Initially, the Ru particles were deposited on the surface of purified MWCNTs supports through the chemical reduction of RuCl 3 by glycol. Then, the ultrathin t‐CN x layer was chemically coated on the surface of Ru/MWCNTs‐p via the polymerization between tetrachloromethane (CCl 4 ) and ethylenediamine (C 2 H 8 N 2 ) and subsequent thermal treatment, as reported in previous studies . X‐ray diffraction (XRD) and transmission electron microscopy (TEM) techniques were used to characterize their structural and morphological features.…”

Semiconductor-based photocatalysts for photocatalytic and photoelectrochemical water splitting: will we stop with photocorrosion?

“…2d and e). 54 Comparing the TEM images of the used sample, no obvious etching was found for the used CdS-Pt/CN x and CdS/CN x -Pt, while severe photocorrosion was detected in the used CdS-Pt sample, indicating that the modication with the CN x layer can effectively inhibit the instability of CdS under light irradiation (Fig. 2f and g).…”

Metal Sulfides for Photocatalytic Hydrogen Production: Current Development and Future Challenges

“…We hope that this review can provide some useful information and inspiration in future research for promoting the goal of commercialization application over metal sulfide. Pt-PdS/CdS Dual cocatalysts 300 W Xe-lamp (λ > 420 nm) Na 2 S-Na 2 SO 3 8.77 100% (100 h) [123] CdS@MoS 2 @Co-Pi Dual cocatalysts 405 mW cm À2 (λ > 420 nm) Lactic acid 40.5 90% (20 h) [124] rGO-CdS@MoS 2 Dual cocatalysts 300 W Xe-lamp (420-780 nm) Lactic acid 14.4 96.5% (20 h) [125] CdS@Mo 2 C-C Coating shell 300 W Xe-lamp (λ > 420 nm) Na 2 S-Na 2 SO 3 17.24 100% (24 h) [126] Pt/CdS@Al 2 O 3 Coating shell 300 W Xe-lamp (λ > 420 nm) Pure water 0.0621 100% (30 h) [128] Pt-TiO 2 /CdS Coating shell 300 W Xe-lamp (λ > 420 nm) Pure water 0.003 100% (10 h) [129] CdS/CNx-Pt Coating shell 300 W Xe-lamp (λ > 400 nm) Na 2 S-Na 2 SO 3 4.14 100% (60 h) [130]…”

“…[ 30 ] Frequently, the stable shell simultaneously improves the photogenerated holes transfer and alleviates the photocorrosion. [ 30,31 ] The relatively stable materials such as carbon, [ 126,127 ] metal oxides, [ 128,129 ] and polymer [ 130 ] are usually used to improve the stability of metal sulfides. For instance, the hybrid Mo 2 C–C was uniformly coated on the surface of CdS nanorods using a sequential solvothermal–hydrothermal–carbonization process ( Figure a).…”

“…Copyright 2019, Elsevier. c) and f ) reproduced with permission [130]. Copyright 2017, Royal Society of Chemistry.…”