Themed collection Electrocatalytic hydrogen production – Topic Highlight

2D–2D hybrids have large heterointerfaces and strong interactions between the two components, leading to strong coupling effects that influence the electronic structure of active sites and benefit charge transfer during energy conversion reactions.

Three state-of-the-art defects-tuning strategies have been summarized for regulating the electronic structures, enhancing the conductivities and boosting the OER performances of transition metal (hydr)oxides-based electrocatalysts.

A perspective with an explicit account of the appropriate screening of water splitting electrocatalysts advocating dos and don’ts!

How does bimetallic composition of nickel-rich semiconductors affect their electrochemical water splitting activity?

Transition metal quantum dots composites for an electrocatalytic hydrogen evolution reaction.

Post synthetically-modified UiO-66-NH₂ with a molecular cobaloxime [Co(DMG)₂Cl₂] (DMG = dimethylglyoxime) catalyst displays excellent photo-(404 μmol g⁻¹ h⁻¹) and electrocatalytic H₂ evolution activity in an aqueous solution.

Schematic representation of V₂O₅ synthesis and its OER analysis.

A stable, efficient, and low-cost Ni-doped Bi₃O₄Br electrocatalyst for improved H₂ production in alkaline conditions.

Rotten passion fruits, which are highly available in many countries during some periods of the year, can be used to efficiently produce CoFe₂O₄ material with special structural and electrochemical characteristics for the hydrogen evolution reaction.

WS₂ and UiO-66 hybrid as a highly effective electrocatalyst for water splitting. It shows improved bifunctional catalytic activity for both HER and OER for efficient overall water-splitting.

Efficient coupling of economically favorable electro-oxidation reactions with the hydrogen evolution reaction (HER) has been considered as a promising way to realize synergistic production of hydrogen and value-added chemicals.

N-doped carbon nanosheets derived from triazine-containing polyimide-based covalent organic framework (TP-COF) exhibit outstanding electrocatalytic hydrogen evolution.

The poor intrinsic catalytic activity of g-C₃N₄ towards electrochemical hydrogen evolution reaction (HER) was overcome by sulphur doping and NiV LDH compositing. A comprehensive account of enhanced HER through the Volmer–Heyrovský mechanism is provided.

The BiVO₄/CoV-LDHs/Ag photoanode displays excellent photo-electrochemical glycerol oxidation activity, reaching 7.15 mA cm⁻² at 1.23 V.

Herein, a heterostructure of Ni₃S₂–Ni₃N was prepared by a three-step synthesis procedure that consists of the formation of Ni₃S₂ on NF, the electrodeposition of Ni(OH)₂ over Ni₃S₂ and nitridation in the presence of ammonia.

Synergistic interaction between CoP and Cu₃P enables facile surface reconstruction of CoP–Cu₃P nanocomposites, making them excellent glycerol oxidation and hydrogen evolution catalysts, requiring only 1.21 V to reach 10 mA cm⁻².

The synergistic effect of Pt–ZnO–Bi₂O₃ ternary heterojunction is observed and mechanistic paths are proposed for the photo-electrooxidation of methanol in alkali under visible light irradiation.

A novel metal–organic framework (MOF) with efficient OER electrocatalytic performance (defined as FeCo-L₁L₂) was successfully synthesized.

The in situ developed intermediate MoO₂-layered structures exhibited superior performance towards HER activity. The faceted and stacked MoO₂ structures are potential candidates as electrode materials for pseudocapacitors.