Manipulating the Spin State of Spinel Octahedral Sites via a π-π Type Orbital Coupling to Boost Water Oxidation.

Spin state is often regarded as the crucial valve to release the reactivity of energy-related catalysts, yet it is also challenging to precisely manipulate, especially for the active center ions occupied at the specific geometric sites. Herein, a π-π type orbital coupling of 3d (Co)-2p (O)-4f (Ce) was employed to regulate the spin state of octahedral cobalt sites (Co) in the composite of CoO/CeO. More specifically, the equivalent high-spin ratio of Co can reach to 54.

Single Component Organic Photosensitizer with NIR-I Emission Realizing Type-I Photodynamic and GSH-Depletion Caused Ferroptosis Synergistic Theranostics.

Phototheranostic agents have thrived as prominent tools for tumor luminescence imaging and therapies. Herein, a series of organic photosensitizers (PSs) with donor-acceptors (D-A) are elaborately designed and synthesized. In particular, PPR-2CN exhibits stable near infrared-I (NIR-I) emission, excellent free radicals generation and phototoxicity.

Activating Octahedral Center in Co-Doped NiFe O via Bridging Amorphous MoS for Electrocatalytic Water Oxidation: A Case for e Orbital Regulation in Spinel Oxide.

Moderate e filling for octahedral metal cations (M ) is strongly correlated with the electrocatalytic water oxidation performance in the oxides system. Here, the e fillings of Ni and Fe in NiFe O -based spinel are controllably regulated by introducing an external radical of catalytically inactive MoS as an electron acceptor via a novel ultrasonic anchored pyrolysis strategy. The electron occupied in e orbit of M emigrates with the amount of MoS hanging on the apical of octahedral sites, and results in a salutary transition from high to medium e occupancy state, as confirmed by the X-ray absorption spectroscopy and X-ray photoelectron spectroscopy.

Modulating Ti t Orbital Occupancy in a Cu/TiO Composite for Selective Photocatalytic CO Reduction to CO.

The electronic structure of composites plays a critical role in photocatalytic conversion, whereas it is challenging to modulate the orbital for an efficient catalyst. Herein, we regulated the t orbital occupancy state of Ti to realize efficient CO conversion by adjusting the amount of photo-deposited Cu in the Cu/TiO composite. For the optimal sample, considerable electrons transfer from the Cu d orbital to the Ti t orbital, as proven by X-ray absorption spectroscopy.

Tuning WO/CuO{111} Interfaces for the Highly Selective CO Photocatalytic Conversion to CH.

As a multiple proton-coupled electron transfer process, photocatalytic conversion of CO usually produces a wide variety of products. Improving the yield and selectivity of CO to the single product is still a significant challenge. In this work, we describe that the rationally constructed WO/CuO{111} interfaces achieve highly selective CO photocatalytic conversion to CH.