Energy Environ. Sci.:Photoelectrochemical CO2 Reduction to Adjustable Syngas on Grain-boundary-mediated a-Si/TiO2/Au Photocathodes with Low Onset Potentials

Photoelectrochemical (PEC) CO2 reduction reaction (CRR) in aqueous medium is among the most promising methods to produce renewable fuel with solar and water as the energy and electron source. But the high negative bias remains a prerequisite to achieve an appreciable conversion at present due to the large overpotential of CO2 reduction. This communication describes […]

Nat Commun: Breaking the Scaling Relationship via Thermally Stable Pt/Cu Single Atom Alloys for Catalytic Dehydrogenation

Due to the existence of scaling properties of adsorption energies on transition metal surfaces, the enhancement of the catalytic activity is frequently accompanied by side reactions leading to a reduction in selectivity for the target product. Herein, by systematically screening Pt alloy materials using density functional theory calculations, we developed an approach to breaking the […]

Nanostructured NiFe (Oxy)hydroxide with Easily Oxidized Ni Towards Efficient Oxygen Evolution Reaction

Water splits into hydrogen and oxygen electrochemically is one of the most promising strategies for the utilization and storage of solar energy. However, oxygen evolution reaction (OER) with sluggish kinetics hinders its larger-scale application. NiFe-based catalysts are one of the most efficient oxygen evolution catalysts (OECs). High-valence Ni is considered as active site or conductive […]

Low-Coordinated Edge Sites on Ultrathin Palladium Nanosheets Boost CO2 Electroreduction Performance

Electrochemical conversion of carbon dioxide (CO2) to value-added products is a promising way to solve CO2 emission problems. Thanks to the eminent conductivity and proper adsorption to intermediates, palladium has become a promising candidate for CO2 electroreduction (CO2ER). However, Pd-based nanocatalysts generally need a large overpotential to overcome energy barriers in generating highly selective products […]

Subsurface Catalysis-mediated Selectivity of Dehydrogenation Reaction

Progress in heterogeneous catalysis is often hampered by the difficulties of constructing active architecture and understanding reaction mechanism at molecular level due to the structural complexity of practical catalysts, in particular for multicomponent catalysts. Although surface science experiment and theoretical simulation help understand the detailed reaction mechanisms over model systems, the direct study of the […]

Highlighted by Chemistry World: Carbon dioxide recycling on the ball

Cocatalysts on the outside and inside of hollow spheres trigger photocatalytic carbon dioxide reduction to syngas ‘Unlike previous ones, our cocatalyst structure is completely separated by a TiO2 shell, enabling electrons and holes generated by TiO2 to flow in opposite directions, which greatly supresses charge carrier recombination,’ Gong tells Chemistry World. Irradiation by solar light […]

Tunable Syngas Production from Photocatalytic CO2 Reduction with Mitigated Charge Recombination Driven by Spatially Separated Cocatalysts

Photocatalytic CO2 reduction represents a sustainable route to generate syngas (the mixture of CO and H2 ), which is a key feedstock to produce liquid fuels in industry. Yet this reaction typically suffers from two limitations: unsuitable CO/H2 ratio and serious charge recombination. This paper describes the production of syngas from photocatalytic CO2 reduction with […]

The nature of loading-dependent reaction barrier over mixed RuO2/TiO2 catalysts

Mixed-metal oxides are one of the most frequently used catalysts in chemical industry, because the superior catalytic reactivity can be achieved by taking advantage of the synergetic effects of their parent oxides. However, the interfacial electronic interactions between metal oxides remain unclear, because of their structural complexity. This paper describes the modulation of catalytic performance […]

Highly Efficient Photoelectrochemical H2O2 Production Reaction with Co3O4as Co-catalysts

The mixed-metal oxides are one of the most frequently used catalysts in chemical industry, because the superior catalytic reactivity can be achieved by taking advantage of the synergetic effects of their parent oxides. However, the interfacial electronic interactions between metal oxides remains unclear due to their structural complexity. This paper describes the modulation of catalytic […]