Photocatalytic Co-Reduction of N and CO with CeO Catalyst for Urea Synthesis.

The effective conversion of carbon dioxide (CO ) and nitrogen (N ) into urea by photocatalytic reaction under mild conditions is considered to be a more environmentally friendly and promising alternative strategies. However, the weak adsorption and activation ability of inert gas on photocatalysts has become the main challenge that hinder the advancement of this technique. Herein, we have successfully established mesoporous CeO nanorods with adjustable oxygen vacancy concentration by heat treatment in Ar/H (90 % : 10 %) atmosphere, enhancing the targeted adsorption and activation of N and CO by introducing oxygen vacancies.

An electrochemical sensor based on AuPd@FeO nanozymes for a sensitive and quantitative detection of hydrogen peroxide in real samples.

The hydrogen peroxide (HO) levels in living organisms and environment have strong effects on many biological processes inducing cell apoptosis/cell necrosis and wound disinfection. Therefore, it is important to have an accurate and detection of HO. Herein, an AuPd@FeO nanozyme-based electrochemical (EC) sensor (termed as AuPd@FeO NPs/GCE) with good stability and anti-interference ability has been prepared for the detection of HO by differential pulse voltammetry (DPV) and chronoamperometry dual-measurement modes.

Inhibition mechanism of melanin formation based on antioxidant scavenging of reactive oxygen species.

The production of reactive oxygen species (ROS) leads to the generation of oxidative stress, which will result in the excessive production and accumulation of melanin in the body and even the occurrence of some skin diseases. The intervention of antioxidants can slow down the rate of melanin formation to some extent. In order to explore the relationship between ROS, melanin and antioxidants, this work investigated the effects of antioxidants on melanin formation by the scavenging of ROS , where zebrafish were used as the model organism in experiments.

FRET Modulated Signaling: A Versatile Strategy to Construct Photoelectrochemical Microsensors for In Vivo Analysis.

Microelectrode-based electrochemical (EC) and photoelectrochemical (PEC) sensors are promising candidates for in vivo analysis of biologically important chemicals. However, limited selectivity in complicated biological systems and poor adaptability to electrochemically non-active species restrained their applications. Herein, we propose the concept of modulating the PEC output by a fluorescence resonance energy transfer (FRET) process.

Oxidized titanium carbide MXene-enabled photoelectrochemical sensor for quantifying synergistic interaction of ascorbic acid based antioxidants system.

Antioxidants can protect organization from damage by scavenging of free radicals. When two kinds of antioxidants are consumed together, the total antioxidant capacity might be enhanced via synergistic interactions. Herein, we develop a simple, direct, and effective strategy to quantify the synergistic interaction between ascorbic acid (AA) and other different antioxidants by photoelectrochemical (PEC) technology.

MoS/ZnO-Heterostructures-Based Label-Free, Visible-Light-Excited Photoelectrochemical Sensor for Sensitive and Selective Determination of Synthetic Antioxidant Propyl Gallate.

Propyl gallate (PG) as one of the important synthetic antioxidants is widely used in the prevention of oxidative deterioration of oils during processing and storage. Determination of PG has received extensive concern because of its possible toxic effects on human health. Herein, we report a photoelectrochemical (PEC) sensor based on ZnO nanorods and MoS flakes with a vertically constructed p-n heterojunction.