A new synthesis approach of hierarchical MoS₂ nanoflakes toward hydrogen evolution in both acidic and alkaline media

Abstract

Herein, ultrathin MoS2 flakes using synergistic liquid phase precipitation method by applying ultrasound and microwave simultaneously were prepared. At 10 mA/cm2 of electric current density, the MoS2 electrocatalysts’ passing points...

Carbon-Dots-Modified Hierarchical ZnIn2S4/Ni–Al LDH Heterojunction with Boosted Charge Transfer for Visible-Light-Driven Photocatalytic H2 Evolution

“…The electronic conductivity and charge transfer of CDsZNA were obtained by electrochemical impedance spectroscopy (EIS) (Figure b). 3-CDsZNA exhibits the smallest arc radius, demonstrating that the CDs in the ZNA catalyst are beneficial to electron transfer, which is in agreement with the photocurrent results . Furthermore, the Mott–Schottky (M-S) plots for ZnIn 2 S 4 and Ni–Al LDHs were used to determine the flat band potential ( E fb ) at different frequencies, as illustrated in Figure c,d.…”

“…3-CDsZNA exhibits the smallest arc radius, demonstrating that the CDs in the ZNA catalyst are beneficial to electron transfer, which is in agreement with the photocurrent results. 58 Furthermore, the Mott−Schottky (M-S) plots for ZnIn 2 S 4 and Ni−Al LDHs were used to determine the flat band potential (E fb ) at different frequencies, as illustrated in Figure 10c,d. The linear sections of M−S plots display positive slopes, revealing that ZnIn 2 S 4 and Ni−Al LDHs present n-type semiconductor properties.…”

Embedding CsPbBr3 Quantum Dots into an In2O3 Nanotube for Selective Photocatalytic CO2 Reduction to Hydrocarbon Fuels

“…In addition, the charge transfer efficiency of the synthesized samples was further evaluated by electrochemical impedance testing. As shown in Figure b, the arc radius of CPB/IO-2 is significantly smaller than that of pure In 2 O 3 and CsPbBr 3 QDs, indicating that the CPB/IO-2 could decrease the charge transfer resistance and suppress the photoinduced charge recombination. − …”

An interface engineering strategy of MoS2/perovskite oxide as a bifunctional catalyst to boost overall water splitting

“…However, their high cost and poor stability pose a grand challenge for large-scale implementation. [7][8][9] Therefore, the development of bifunctional electrocatalysts with abundant reserves, low cost and excellent performance to replace noble metal catalysts plays a crucial role for practical water electrolysis.…”