Efficient H₂ evolution on Co₃S₄/Zn_0.5Cd_0.5S nanocomposites by photocatalytic synergistic reaction

Abstract

To achieve high photocatalytic efficiency of H2 evolution, promoting the utilization rate of photogenerated charge carriers by photocatalytic synergistic reaction is an efficient strategy. In this work, Co3S4/Zn0.5Cd0.5S nanocomposites with...

Boosting photocatalytic H2 evolution through interfacial manipulation on a lotus seedpod shaped Cu2O/g-C3N4 p-n heterojunction

“…[1][2][3][4] Although tremendous progress has been made, photocatalysis technology is still restricted by the unsatisfactory performance of the existing photocatalysts. [5][6][7][8][9][10][11][12] To overcome this dilemma, it is essential to design cost-effective and high-performance photocatalysts to achieve efficient H 2 production for practical applications. 13,14 Among various photocatalysts, graphitic carbon nitride (g-C 3 N 4 ) has shown great potential for water splitting under visible light irradiation owing to its environmental friendliness, good physicochemical stability and distinctive electronic properties.…”

Decorating Zn0.5Cd0.5S with C,N Co-Doped CoP: An Efficient Dual-Functional Photocatalyst for H2 Evolution and 2,5-Diformylfuran Oxidation

“…ZIF-67 was first synthesized by 2-methylimidazole in a typical procedure (Figures S1 and S3a). Then, 0.68 g of ZIF-67 with a purple color was placed in a crucible and annealed at 500 °C (5 °C min –1 ) under N 2 for 2 h. The sample of Co 3 O 4 with polyhedral structure was formed. The obtained Co 3 O 4 precursors and NaH 2 PO 2 were put into a crucible, and NaH 2 PO 2 was placed before Co 3 O 4 from the direction of N 2 flow.…”

“…Zn 0.5 Cd 0.5 S nanoparticles were synthesized by a hydrothermal method. , First, 40 mL of 0.25 mol L –1 Na 2 S·9H 2 O solution (deionized H 2 O as solvent) was slowly added to another 40 mL of water solution, which contained 5 mmol of Zn­(Ac) 2 ·2H 2 O and 5 mmol of Cd­(NO 3 ) 2 ·4H 2 O. Then, the mixture was stirred for 1 h and transferred into a 100 mL Teflon-lined stainless-steel autoclave, and the temperature was held at 160 °C for 12 h. After cooling naturally, the yellow precipitate was washed several times by centrifugation and dried at 60 °C for 12 h in a vacuum atmosphere.…”

“…36 ZIF-67 was first synthesized by 2-methylimidazole in a typical procedure (Figures S1 and S3a). 30 Then, 0.68 g of ZIF-67 with a purple color was placed in a crucible and annealed at 500 °C 4H 2 O. Then, the mixture was stirred for 1 h and transferred into a 100 mL Teflon-lined stainless-steel autoclave, and the temperature was held at 160 °C for 12 h. After cooling naturally, the yellow precipitate was washed several times by centrifugation and dried at 60 °C for 12 h in a vacuum atmosphere.…”

“…As partial Co-based materials have similar properties to zerovalent metals, they can efficiently transfer photogenerated e – while preventing the recombination of photoinduced e – and h + . Some reported works indicated that Co-based materials with special morphology can be synthesized by metal–organic frameworks (MOFs), consisting of metal units and organic ligands. − Especially, CoP as an efficient cocatalyst derived from ZIF-67 can supply abundant active sites and enhance the photocatalytic activity of H 2 production . Furthermore, when it coupled with Zn x Cd 1– x S, the photogenerated e – can efficiently transfer from Zn x Cd 1– x S to CoP, , retarding the recombination of e – and h + .…”