JACS: FeO6 Octahedral Distortion Activates Lattice Oxygen in Perovskite Ferrite

Modulating lattice oxygen in metal oxides that conducts partial oxidation of methane in balancing C-H activation and syngas selectivity remains challenging. This paper describes the discovery of distorting FeO6 octahedra in La1-xCexFeO3 (x=0, 0.25 0.5, 0.75, 1) orthorhombic perovskites for the promotion of lattice oxygen activation. By combined electrical conductivity relaxation (ECR) measurements and density […]

JACS: Grain-Boundary-Rich Copper for ECR

The grain boundary in copper-based electrocatalysts has been demonstrated to improve the selectivity of solar-driven electrochemical CO2 reduction towards multi-carbon products. However, the approach to form grain boundaries in copper is still limited. This paper describes a controllable grain growth of copper electrodeposition via poly (vinylpyrrolidone) used as an additive. A grain-boundary-rich metallic copper could […]

Angew:Enriched Surface Oxygen Vacancies of Photoanodes via Photoetching with Enhanced Charge Separation

Foreign element doping could improve the charge transport of photoelectrodes, however, new recombination centers may be introduced. This paper describes a facile photoetching approach that alleviates the negative effects from bulk defects by confining the oxygen vacancy (O vac) at the surface of BiVO4 photoanode, via a 10‐minute photoetching. This strategy could induce enriched O […]

EES:Bifacial Passivation of n-silicon Metal-insulator-semiconductor Photoelectrodes for Efficient OER and HER

Silicon-based (Si-based) junctions have been widely investigated in recent years as photoelectrochemical (PEC) water splitting photoelectrodes, including buried junctions and metal-insulator-semiconductor (MIS) Schottky junctions. However, Si-based MIS photoelectrodes suffer from low performance for PEC oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) because of the dilemma that a thin insulator cannot provide enough interfacial […]

Nat Rev Mat: Theory-guided design of catalytic materials using scaling relationships and reactivity descriptors

The active sites of heterogeneous catalysts can be difficult to identify and understand, and, hence, the introduction of active sites into catalysts to tailor their function is challenging. During the past two decades, scaling relationships have been established for important, heterogeneous catalytic reactions. More specifically, a physical or chemical property of the reaction system, termed […]

JACS:Modulating Lattice Oxygen in Dual-functional Mo-V-O Mixed Oxides for CLOD

Oxygen chemistry plays a pivotal role in numerous chemical, energy and environmental systems. Particularly, selective cleavage of C–H bonds by metal oxo species is highly desirable in the catalytic dehydrogenation of light alkanes. However, high selectivity of alkene is usually hampered through consecutive oxygenation reactions in conventional oxidative dehydrogenation (ODH) scheme. Herein, we show that […]

JACS: Single-atom Mn-N4 Sites Catalyzed Peroxone Reaction for Efficient Production of Hydroxyl Radicals under Acidic Solution

The peroxone reaction between O3 and H2O2 has been deemed a promising technology to resolve the increasingly serious water pollution problem by virtue of the generation of superactive hydroxyl radicals (•OH), but it suffers greatly from an extremely limited reaction rate constant under acidic conditions (ca. less than 0.1 M–1 s–1 at pH 3). This […]

Angew Chem: The Interplay between Structure and Product Selectivity of CO2 Hydrogenation

Identification of the active structure under reaction condition is of great importance for rational design of heterogeneous catalysts, but which is often hampered due to their structural complexity. This paper describes the interplay between the surface structure of Co3O4 and the CO2 hydrogenation reaction. Experimental results combined with theoretical calculations show that the Co3O4 with […]

ACS Catal: Adsorption Preference Determines Segregation Direction: A Shortcut to More Realistic Surface Models of Alloy Catalysts

A correct description of active sites is the precondition towards reaction mechanism study and catalyst screening. In many cases, high-symmetry and ideally ordered crystalline surfaces are used to represent the reactive sites. However, reaction-induced surface segregation and restructuring weaken the rationality of simply employing the suggested most stable surfaces. This paper describes an establishment of […]

JACS: Ultrathin PdAu Shells with Controllable Alloying Degree on Pd Nanocubes towards ECRR

Electrocatalytic reduction of carbon dioxide (CO2ER) to reusable carbon resources is a significant step to balance the carbon cycle. This Communication describes a seed-mediated growth method to synthesize ultrathin Pd–Au alloy nanoshells with controllable alloying degree on Pd nanocubes. Specifically, Pd@Pd3Au7 nanocrystals (NCs) show superior CO2ER performance, with a 94% CO faraday efficiency (FE) at […]