Themed collection Hydrogen production

As the active component for MSR, the atomically dispersed Ni–CeO_x interfacial sites connect the MD and WGS, in which the Ni sites and O_v in CeO_x contribute to the activation of methanol and water, respectively, resulting in excellent MSR activity.

A surface reactivity diversity strategy is proposed for reducing the pH dependence of HER kinetics in medium-entropy alloys, in which favorable adsorption of intermediates at different pH levels can be achieved by diverse surface sites.

A single frequency impedance method is introduced, based on an optimum high frequency of minimum phase and faradaic processes, to monitor gas bubble evolution during water electrolysis in operando.

A promising strategy to estabilize earth-abundant transition metal oxides during water electrolysis in acidic media to compete with noble metal water oxidation catalysts.

The high-valence Fe ions are stabilized on a CeO₂ support and achieved a record low overpotential of 219 mV to reach the current density of 50 mA cm⁻².

Modification of the manganese–antimony oxide nanocomposites with lead produces an active and highly robust electrocatalyst for anodes of hydrogen-generating water electrolysers with proton conducting electrolytes.

Based on the hydrogen spillover effect, the binary ‘metal–support’ Ni₃S₂/Pt₅Ru₁ is in situ constructed on Ni foam for electrocatalytic hydrogen evolution.

With electron-rich pyrimidine rings introduced, the obtained crystalline PCN is favored with rationally modulated band and electronic structures, resulting in efficient photocatalytic hydrogen evolution and benzyl alcohol selective oxidation.

Single-atomic Re on 1T-2H MoS₂ heterostructure demonstrates HER performance on par with Pt/C electrocatalyst. This good performance is attributed to the introduction of Re single atoms that promote phase transition and serve as active sites for water dissociation.

In a Rh/CrO_x core–shell cocatalyst for water-splitting photocatalysts, CrO_x serves as an electron pathway, transfers the photoexcited electrons from photocatalysts to Rh (reduction site), and improves the H₂ evolution activity.

The CrO_x modification of PdAg nanoparticles promotes the dehydrogenation of formic acid, which is attributed to the interplay of unique ensemble sites, at which electron-deficient Ag^δ+ and electron-rich Pd^δ− atoms were adjacent.

The defect-copper chalcopyrite CuGa₃Se₅ is a promising photocathode material for solar hydrogen generation. Here we assess its performance with photoelectrochemical measurements and vibrating Kelvin probe surface photovoltage spectroscopy.

Detailed investigation of photocatalysts, cocatalysts and redox mediators provides a Z-scheme overall water splitting system operating under long-wavelength visible light.