Synergistic oxidation and reduction of complex pollutants in wastewater using a self-cycling piezo-photocatalytic fenton system.

Simultaneous organic pollutant oxidation and heavy metal ion reduction may enhance ocean and medical wastewater treatment. Here a self-cycling piezo-photocatalytic Fenton (SPF) system was developed using an Na-Sm bimetal-doped layered ferroelectric perovskite SrBiNbO (NS-SBNO) and Fe ions. The experimental results and density functional theory calculations demonstrated that bimetal doping induced an enhanced internal electric field, improving electron-hole pair separation and transmission.

An Electron Transfer Mediated Mechanism for Efficient Photoreforming of Waste Plastics Using a NiS/ZnCdS Heterojunction.

The oxidative degradation of plastics in conjunction with the production of clean hydrogen (H) represents a significant challenge. Herein, a NiS/ZnCdS heterojunction is rationally synthesized and employed for the efficient production of H and high-selectivity value-added chemicals from waste plastic. By integrating spectroscopic analysis techniques with density functional theory (DFT) calculations, a solely electron transfer-mediated reaction mechanism is confirmed, wherein NiS extracts electrons from ZnCdS (ZCS) to promote the spatial segregation of photogenerated electrons and holes, which not only facilitates H production but also maintains the high oxidation potential of holes on the ZCS surface, favoring hole-dominated plastic oxidation.

An Nrf2-NF-κB Crosstalk Controls Hepatocyte Proliferation in the Normal and Injured Liver.

Background & Aims: The liver has remarkable regenerative and detoxification capacities, which require the Nrf2 and NF-κB transcription factors. Although their individual functions in hepatocytes are well characterized, knowledge about their crosstalk in the adult liver is limited.

Methods: We performed AAV8-Cre inducible, hepatocyte-specific knockout of Nrf2, the NF-κB subunit p65, or both genes to determine the individual and combined roles of these transcription factors in the intact liver of male adult mice and after acute CCl injury.

Defect Passivating Hole Transporting Material for Large-Area and Stable Perovskite Quantum-Dot Light-Emitting Diodes.

Organic hole-transporting materials (HTMs) with high hole mobility and a defect passivating ability are critical for improving the performance and stability of perovskite optoelectronics, including perovskite quantum dot light-emitting diodes (Pe-QLEDs) and perovskite solar cells. In this study, we designed two small-molecule HTMs, termed and , incorporating the methylthio group (SMe) as defect-passivating sites to enhance the interaction between HTMs and the perovskite layer for Pe-QLED applications. Our study highlights that , featuring SMe groups at the para-position of the carbazole unit, demonstrates a strong interaction and superior passivation effects with perovskite quantum dots.

The Dps Protein Protects DNA in the Form of the Trimer.

The Dps protein is the major DNA-binding protein of prokaryotes, which protects DNA during starvation by forming a crystalline complex. The structure of such an intracellular DNA-Dps complex is still unknown. However, the phenomenon of a decrease in the size of the Dps protein from 90 Å to 69-75 Å during the formation of a complex with DNA has been repeatedly observed, and no explanation has been given.