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The high‐current‐density Zn–air battery shows big prospects in next‐generation energy technologies, while sluggish O2 reaction and diffusion kinetics barricade the applications. Herein, the sequential assembly is innovatively demonstrated for hierarchically mesoporous molybdenum carbides/carbon microspheres with a tunable thickness of mesoporous carbon layers (Meso‐Mo2C/C‐x, where x represents the...
The adjustment of the valence state of metal ions is crucial for various applications because peculiar activity originates from metal ions with specific valence. Cu+ can interact with molecules possessing unsaturated bonds like CO via π‐complexation, while Cu2+ doesn't have such ability. Meanwhile, Cu+ sites are easily oxidized to Cu2+, leading to the loss of activity. Despite great efforts, the development...
A general method for the direct synthesis of highly homogeneous and dense polymerized carbon nitride (PCN) nanosheet films on F: SnO2 (FTO) is developed. Detailed photoelectrochemical (PEC) water‐splitting studies reveal that the as‐synthesized PCN films exhibit outstanding performance as photoanode for PEC water‐splitting. The optimal PCN photoanode exhibits excellent photocurrent density of 650 µA...
Hepatic Ischemia‐Reperfusion Injury Management
Selenium‐doped carbon quantum dots (Se‐CQDs) with excellent anti‐oxidation capability protect hepatocytes from apoptosis by limiting damage from oxidative stress. Se‐CQDs‐lecithin nanoparticles are developed through a supramolecular self‐assembly mainly driven by noncovalent interactions, which effectively scavenge reactive oxygen species and inhibit...
Hepatic ischemia‐reperfusion injury (HIRI) is a critical complication after liver surgery that negatively affects surgical outcomes of patients with the end‐stage liver‐related disease. Reactive oxygen species (ROS) are responsible for the development of ischemia‐reperfusion injury and eventually lead to hepatic dysfunction. Selenium‐doped carbon quantum dots (Se‐CQDs) with an excellent redox‐responsive...
Developing bifunctional catalysts for oxygen electrochemical reactions is essential for high‐performance electrochemical energy devices. Here, a Mott–Schottky heterojunction composed of porous cobalt–nitrogen–carbon (Co‐N‐C) polyhedra containing abundant metal‐phosphides for reversible oxygen electrocatalysis is reported. As a demonstration, this catalyst shows excellent activity in the oxygen electrocatalysis...
Designing cost‐effective and high‐efficiency bifunctional electrocatalysts for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) occurred at air electrodes is vitally significant yet challenging for Zn–air batteries (ZABs). In this work, a zinc substrate induced fabrication is reported of free‐standing nanocarbon hybrid film which shows good bifunctional activity and can be...
Exploiting platinum‐group‐metal (PGM)‐free electrocatalysts with remarkable activity and stability toward oxygen reduction reaction (ORR) is of significant importance to the large‐scale commercialization of proton exchange membrane fuel cells (PEMFCs). Here, a high‐performance and anti‐Fenton reaction cobalt–nitrogen–carbon (Co–N–C) catalyst is reported via employing double crosslinking (DC) hydrogel...
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