Co doped MoS2 as cocatalyst considerably improved photocatalytic hydrogen evolution of g-C3N4 in an alkalescent environment

A CdS/MnS p–n heterojunction with a directional carrier diffusion path for efficient photocatalytic H2 production

“…22 Photocatalytic H 2 production activity can also be improved by loading cocatalysts with small overpotentials of the HER or OER to accelerate the oxidation or reduction reaction. Pt, 23,24 MoS 2 , 25,26 VS 2 , 27 NiS, 28 Ni 5 P 4 , 29 CoP, 30 etc. are selected as HER cocatalysts for the reduction reaction, and CoO x , 31 Cr 2 O 3 , 32 NiCoO 2 33 and MnO 2 34 etc.…”

Cobalt doped Mo5N6 as a noble-metal-free novel cocatalyst for promoting photocatalytic hydrogen production of g-C3N4 nanosheets

“…The peaks of Co 2p at 780.1 and 777.5 eV were assigned to Co 2p 3/2 of Co 2+ . 21 The peaks of Co 2p at 800.2 and 792.7 eV were assigned to Co 2p 1/2 of Co 2+ . 21 Compared with Mo 5 N 6 (Fig.…”

“…Simultaneously, the peaks at 13.3° (100) and 27.4° (002) of Mo 5 N 6 /g-C 3 N 4 and Co–Mo 5 N 6 /g-C 3 N 4 hybrids were weaker than those of bare g-C 3 N 4 , indicating that the crystallization of g-C 3 N 4 was weakened by Mo 5 N 6 and Co–Mo 5 N 6 incorporation. 11,21 The XRD pattern of Co–Mo 5 N 6 (curve orange in Fig. S1, ESI†) showed four diffraction peaks at 2 θ of 32.3°, 36.7°, 39.6° and 56.1°, attributed to the (004), (110), (112) and (115) planes of Mo 5 N 6 (JCPDS 51-1326), respectively.…”

“…S1 (ESI†), compared with Mo 5 N 6 (curve purple), the characteristic peaks assigned to Mo 5 N 6 of Co–Mo 5 N 6 (curve orange) became weaker and broader, which confirmed that the doping of Co decreased the crystallinity of Mo 5 N 6 . 21…”

Insights into the Operation of Noble‐Metal‐Free Cocatalyst 1T‐WS2‐Decorated Zn0.5Cd0.5S for Enhanced Photocatalytic Hydrogen Evolution

“…Photocatalytic hydrogen evolution promises to be an ideal way to deal with the increasingly severe energy crisis. [1,2] Metal sulfides (such as CdS, ZnS) have attracted wide attention due to their excellent photocatalytic hydrogen evolution properties. [3,4] Based on CdS, different proportions of Zn atoms are doped to form the solid solution Zn x Cd 1À x S. Taking into consideration the appropriate band structure and optical response range of CdS, the solid solution also retains the optical stability of ZnS.…”