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An important strategy to improve performance of the catalyst is loading nanoparticle co-catalyst of better dispersion and conductivity. In this work, the ZIF-67-derived CoP quantum dots (QDs) anchored graphitized carbon...

2D MXene-based catalysts, such as Ti 3 C 2 T x have unique, excellent properties and show extraordinary advantages in many catalytic reactions. However, as cocatalysts for photocatalytic hydrogen evolution reaction (HER), MXene has insufficient catalytic activity because the active metal sites of H þ binding are hidden by passivation ÀF/ÀO termination, which hinders postreaction desorption of H 2 . A simple ultrasonic treatment method is used to expose more active sites and adjust the surface work function of Ti 3 C 2 T x , and additionally inactive ÀF/ÀO terminal groups are replaced with diaminoethanethiol, denoted as Ti 3 C 2 -A x , as the surface terminal group through covalent bonds (TiÀS). The optimized photocatalyst (Cd 0.4 Zn 0.6 S/Ti 3 C 2 -A 40 ) demonstrates excellent catalytic activity (HER: 13.44 mmol h À1 g À1 ), which is about 5.8 and 1.9 times higher than that of pristine Cd 0.4 Zn 0.6 S and Cd 0.4 Zn 0.6 S/Ti 3 C 2 with stability (24 h of cycle experiments), outperforming most of the reported MXene-based photocatalysts. The results of relevant experiments and density functional theory calculations reveal that the excellent conductivity of Ti 3 C 2 -A 40 , well-structured Cd 0.4 Zn 0.6 S/ Ti 3 C 2 -A 40 Schottky junction, and the efficient interfacial charge transfer are major factors that contribute to the improved photocatalytic mechanism. This promotes application of surface-modified MXene as an efficient cocatalyst and provides a new idea for design and synthesis of heterojunction materials.

The oxygen evolution reaction (OER) is an important half-reaction in the field of energy production. However, how effectively, simply, and greenly to prepare low-cost OER electrocatalysts remains a problem. Herein,...

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Oxygen deficiency modified Z-scheme CdS/WO3−x nanomaterials with MoS2 as the cocatalyst showed excellent photocatalytic behavior and photostability.

Developing earth-abundant and highly efficient electrocatalysts is critical for further development of system. The metal (M) doping strategy and inorganic / organic composite are two common strategies to improve the...