Iron rust for efficient photocatalytic hydrogen evolution.

Iron (Fe) corrosion typically results in significant damage to Fe-based devices and structures. However, the corrosion products can be repurposed as active materials in electrocatalytic and photocatalytic reactions. In this study, we have strategically induced oxygen corrosion in Fe foams to synthesize cost-effective Fe rust cocatalysts (Orthorhombic FeOOH) for enhancing the photocatalytic hydrogen evolution reaction (HER), exemplifying the concept of "turning waste into treasure".

Rational Regulation of High-Entropy Perovskite Oxides through Hole Doping for Efficient Oxygen Electrocatalysis.

Due to the high configuration entropy, unique atomic arrangement, and electronic structures, high-entropy materials are being actively pursued as bifunctional catalysts for both the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in rechargeable zinc-air batteries (ZABs). However, a relevant strategy to enhance the catalytic activity of high-entropy materials is still lacking. Herein, a hole doping strategy has been employed to enable the high-entropy perovskite La(CrMnFeCoNi)O to effectively catalyze the ORR and OER.

Tuning the high-entropy perovskite as efficient and reliable electrocatalysts for oxygen evolution reaction.

Due to their unique electronic structure, atomic arrangement and synergistic effect, high-entropy materials are being actively pursued as electrocatalysts for oxygen evolution reaction (OER) in water splitting. However, a relevant strategy to improve high-entropy materials is still lacking. Herein, substitutional doping on the La-site in high-entropy perovskite La Sr (CrMnFeCoNi)O is reported as an efficient OER catalyst.

Engineering Iron-Based Nanomaterials for Breast Cancer Therapy Associated with Ferroptosis.

Ferroptosis has received increasing attention as a novel nonapoptotic programmed death. Recently, iron-based nanomaterials have been extensively exploited for efficient tumor ferroptosis therapy, as they directly release high concentrations of iron and increase intracellular reactive oxygen species levels. Breast cancer is one of the commonest malignant tumors in women; inhibiting breast cancer cell proliferation through activating the ferroptosis pathway could be a potential new target for patient treatment.

Molten salt synthesis of 1T/2H mixed phase MoS for boosting photocatalytic H evolution via Schottky junction under EY-sensitized system.

Clean H fuel obtained from the photocatalytic water splitting to hydrogen reaction could efficiently alleviate current energy crisis and the concomitant environmental pollution problems. Therefore, it is desirable to search for a highly efficient photocatalytic system to decrease the energy barrier of water splitting reaction. Herein, the 1T/2H mixed phase MoS sample with Schottky junction between contact interfaces is developed through molten salt synthesis for photocatalytic hydrogen production under a dye-sensitized system (Eosin Y-TEOA-MoS) driven by the visible light.

P-Incorporation Induced Enhancement of Lattice Oxygen Participation in Double Perovskite Oxides to Boost Water Oxidation.

Activating the lattice oxygen in the catalysts to participate in the oxygen evolution reaction (OER), which can break the scaling relation-induced overpotential limitation (> 0.37 V) of the adsorbate evolution mechanism, has emerged as a new and highly effective guide to accelerate the OER. However, how to increase the lattice oxygen participation of catalysts during OER remains a major challenge.

Acid-triggered aggregation of Janus nanoparticles for enhanced imaging-guided photothermal therapy.

Poor tumor delivery efficiency remains a significant challenge for the integrated nanoplatform for diagnosis and treatment. Nanotherapeutics capable of aggregation in response to the tumor microenvironment has received considerable attention because of its ability to enhance tumor delivery efficiency and accumulation. We prepared smart Au-FeO Janus nanoparticles (GIJ NPs) modified with mixed-charged ligands (3,4-dihydroxyhydrocinnamic acid [DHCA] and trimethylammonium dopamine [TMAD]).

Facilitating the Deprotonation of OH to O through Fe -Induced States in Perovskite LaNiO Enables a Fast Oxygen Evolution Reaction.

Aliovalent doping is widely adopted to tune the electronic structure of transition-metal oxides for design of low-cost, active electrocatalysts. Here, using single-crystalline thin films as model electrocatalysts, the structure-activity relationship of Fe states doping in perovskite LaNiO for oxygen evolution reaction (OER) is studied. Fe state is found to be crucial for enhancing the OER activity of LaNiO , dramatically increasing the activity by six times, while Fe has negligible effect.

A Single-Step Hydrothermal Route to 3D Hierarchical Cu O/CuO/rGO Nanosheets as High-Performance Anode of Lithium-Ion Batteries.

As anodes of Li-ion batteries, copper oxides (CuO) have a high theoretical specific capacity (674 mA h g ) but own poor cyclic stability owing to the large volume expansion and low conductivity in charges/discharges. Incorporating reduced graphene oxide (rGO) into CuO anodes with conventional methods fails to build robust interaction between rGO and CuO to efficiently improve the overall anode performance. Here, Cu O/CuO/reduced graphene oxides (Cu O/CuO/rGO) with a 3D hierarchical nanostructure are synthesized with a facile, single-step hydrothermal method.