J Colloid Interface Sci
June 2025
Seawater electrolysis, benefiting from the closeness to coastal areas, is recognized as a promising alternative for hydrogen (H) production to replace conventional technologies. However, the effectiveness of this method is limited by anode catalysts that exhibit high energy consumption and short lifespans due to chloride-induced chemical corrosion. Herein, we propose a hierarchical Ni phosphate@NiFe layered double hydroxide on Ni foam (NiPO@NiFe LDH/NF) towards alkaline seawater oxidation (ASO).
View Article and Find Full Text PDFLate-stage diagnosis is a major contributor to cancer mortality and thus leads to increased fatality, making early detection crucial for improving survival rates. Circulating tumor cells (CTC), detectable before primary tumors become clinically apparent, have emerged as vital biomarkers for the early identification of aggressive cancers. Here, develop a single-atom nanozyme integrated nanoarray as a 3D nano-biointerface for ultrasensitive electrochemical screening of CTCs from hepatocellular carcinoma.
View Article and Find Full Text PDFSeawater electrolysis powered by renewable energy is a promising technique for green hydrogen production. However, the high concentration of chloride ions (Cl) and their derivatives in seawater can severely corrode the anode catalyst, significantly challenging the lifespan of electrolyzers. Herein, we present a poly(acid yellow 17) (PAY) layer-modified CoFe-layered double hydroxide nanoarrays on nickel foam (CoFe LDH@PAY/NF), which serves as an efficient and stable electrocatalyst for alkaline seawater oxidation (ASO).
View Article and Find Full Text PDFSeawater electrolysis has emerged as a promising approach for the generation of hydrogen energy, but the production of deleterious chlorine derivatives (e.g., chloride and hypochlorite) presents a significant challenge due to the severe corrosion at the anode.
View Article and Find Full Text PDFNitric oxide (NO) is an essential molecule in biomedicine, recognized for its antibacterial properties, neuronal modulation, and use in inhalation therapies. The effectiveness of NO-based treatments relies on precise control of NO concentrations tailored to specific therapeutic needs. Electrochemical generation of NO (E-NOgen) via nitrite (NO ) reduction offers a scalable and efficient route for controlled NO production, while also addressing environmental concerns by reducing NO pollution and maintaining nitrogen cycle balance.
View Article and Find Full Text PDFRenewable energy-powered seawater electrolysis is a green and attractive technique for producing high-purity hydrogen. However, severe chlorideions (Cl) and their derivatives tend to corrode anodic catalysts at ampere-level current densities and hinder the application of seawater-to-H systems. Herein, a polycalmagite (PCM)-coated NiFe layered double hydroxide is presented on Ni foam (NiFe LDH@PCM/NF) that exhibits exceptional stability in alkaline seawater.
View Article and Find Full Text PDFSeawater splitting is increasingly recognized as a promising technique for hydrogen production, while the lack of good electrocatalysts and detrimental chlorine chemistry may hinder further development of this technology. Here, the interfacial engineering of manganese dioxide nanoparticles decorated on NiFe layered double hydroxide supported on nickel foam (MnO@NiFe LDH/NF) is reported, which works as a robust catalyst for alkaline seawater oxidation. Density functional theory calculations and experiment findings reveal that MnO@NiFe LDH/NF can selectively enrich OH and repel Cl in oxygen evolution reaction (OER).
View Article and Find Full Text PDFCoastal/offshore renewable energy sources combined with seawater splitting offer an attractive means for large-scale H electrosynthesis in the future. However, designing anodes proves rather challenging, as surface chlorine chemistry must be blocked, particularly at high current densities (). Additionally, waste seawater with increased salinity produced after long-term electrolysis would impair the whole process sustainability.
View Article and Find Full Text PDFNatural enzymes are crucial in biological systems and widely used in biomedicine, but their disadvantages, such as insufficient stability and high cost, have limited their widespread application. Since discovering the enzyme-like activity of FeO nanoparticles, extensive research progress in diverse nanozymes has been made with their in-depth investigation, resulting in rapid development of related nanotechnologies. Nanozymes can compensate for the defects of natural enzymes and show higher stability with lower costs.
View Article and Find Full Text PDFHydrogen is an essential energy resource, playing a pivotal role in advancing a sustainable future. Electrolysis of seawater shows great potential for large-scale hydrogen production but encounters challenges such as electrode corrosion caused by chlorine evolution. Herein, a durable CoCO/CoFe layered double hydroxide (LDH) electrocatalyst is presented for alkaline seawater oxidation, showcasing resistance to corrosion and stable operation exceeding 1,000 h at a high current density of 1 A cm.
View Article and Find Full Text PDFNebulized inhalation administration refers to the dispersion of drugs into small droplets suspended in the gas through a nebulized device, which are deposited in the respiratory tract by inhalation, to achieve the local therapeutic effect of the respiratory tract. Compared with other drug delivery methods, nebulized inhalation has the advantages of fast effect, high local drug concentration, less dosage, convenient application and less systemic adverse reactions, and has become one of the main drug delivery methods for the treatment of respiratory diseases. In this review, we first discuss the characteristics of nebulized inhalation, including its principles and influencing factors.
View Article and Find Full Text PDFMonitoring acetylcholinesterase (AChE) activity and its inhibitor is crucial yet challenging for the early diagnosis and treatment of neurological diseases. In this study, we present Au nanoparticle decorated CoAl layered double hydroxide monolayer (Au@CoAl-LDH-m) as a peroxidase-like (POD) nanozyme for the sensitive colorimetric detection of AChE and its inhibitor, thiamine pyrophosphate (TPP). Remarkably, the Au@CoAl-LDH-m nanozyme can catalyze the oxidation of chromogenic substrates through its POD-like activity, which is effectively inhibited by thiocholine (TCh, a catalytic product of AChE), thereby enabling detection of AChE and TPP through a visible colorimetric readout.
View Article and Find Full Text PDFSodium-storage performance of pyrite FeS is greatly improved by constructing various FeS-based nanostructures to optimize its ion-transport kinetics and structural stability. However, less attention has been paid to rapid capacity degradation and electrode failure caused by the irreversible phase-transition of intermediate NaFeS to FeS and polysulfides dissolution upon cycling. Under the guidance of theoretical calculations, coupling FeS nanoparticles with honeycomb-like nitrogen-doped carbon (NC) nanosheet supported single-atom manganese (SAs Mn) catalyst (FeS/SAs Mn@NC) via atomic-interface engineering is proposed to address above challenge.
View Article and Find Full Text PDFJ Colloid Interface Sci
February 2025
Seawater electrolysis taking advantage of coastal/offshore areas is acknowledged as a potential way of large-scale producing H to substitute traditional technology. However, anodic catalysts with high overpotentials and limited lifespans (caused by chloride-induced competitive chemical reactions) hinder the system of seawater electrolysis for H production. Herein, we present a citrate anion (CA) modified NiFe layered double hydroxide nanosheet array on nickel foam (NiFe LDH@NiFe-CA/NF), which serves as an efficient and stable electrocatalyst towards long-term alkaline seawater oxidation.
View Article and Find Full Text PDFExploring high-performance and low-platinum-based electrocatalysts to accelerate the oxygen reduction reaction (ORR) at the air cathode of zinc-air batteries remains crucial. Herein, by combining electroless deposition and carbothermal reduction, a nitrogen-doped carbon-supported highly dispersed PtSn alloy nanocatalyst (PtSn/NC) was prepared for a high-efficiency ORR process. Electrochemical measurements show that PtSn/NC exhibits excellent electrocatalytic ORR activity with a half-wave potential of 0.
View Article and Find Full Text PDFExploring excellent non-noble bifunctional electrocatalysts for freshwater/seawater splitting at high current densities has attracted extensive interest owing to strong anodic oxidation and severe chloride corrosion challenges. Herein, hierarchical bimetal Ni-Co metaphosphate/molybdenum oxide heterostructure nanowires (NiCoMoPO) are rationally designed and fabricated to efficiently boost oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in alkaline freshwater/seawater, where the favorable electronic structure from heterostructures, signified by X-ray absorption spectra, endows NiCoMoPO with the enhanced intrinsic activity, while its hierarchical nanowire structure and heterostructures provide abundant active sites. Additionally, the PO improves the chloride-corrosion resistance and efficiently facilitates the OER kinetics verified by theoretical and experimental studies.
View Article and Find Full Text PDFThe versatile element composition and multifunctional properties of biodegradable silicates have attracted significant attention in cancer therapeutics. However, their application as nanozymes is often limited by suboptimal catalytic efficiency and insufficient intratumoral retention. In this study, the hydrothermal synthesis of iron silicate (FeSi) nanosheets are reported exhibiting exceptional peroxidase (POD)-like activity (136.
View Article and Find Full Text PDFThe exploration of noble metal-free nanoarrays as high-activity catalytic electrodes for glucose biosensing holds great significance. Herein, we propose a Ni nanoparticle-decorated TiO nanoribbon array on a titanium plate (Ni@TiO/TP) as an effective non-enzymatic glucose biosensing electrode. The as-prepared Ni@TiO/TP electrode demonstrates rapid glucose response, a wide linear response range (1 μM to 1 mM), a low detection limit (0.
View Article and Find Full Text PDFElectrocatalytic H production from seawater, recognized as a promising technology utilizing offshore renewables, faces challenges from chloride-induced reactions and corrosion. Here, We introduce a catalytic surface where OH dominates over Cl in adsorption and activation, which is crucial for O production. Our NiFe-based anode, enhanced by nearby Cr sites, achieves low overpotentials and selective alkaline seawater oxidation.
View Article and Find Full Text PDFIt is vital to explore effective ways for prolonging electrode lifespans under harsh electrolysis conditions, such as high current densities, acid environment, and impure water source. Here we report alternating electrolysis approaches that realize promptly and regularly repair/maintenance and concurrent bubble evolution. Electrode lifespans are improved by co-action of Fe group elemental ions and alkali metal cations, especially a unique Co-Na combo.
View Article and Find Full Text PDFHydrogen therapy, leveraging its selective attenuation of hydroxyl radicals (˙OH) and ONOO, has emerged as a pivotal pathophysiological modulator with antioxidant, anti-inflammatory, and antiapoptotic attributes. Hydrogen therapy has been extensively studied both preclinically and clinically, especially in diseases with an inflammatory nature. Despite the substantial progress, challenges persist in achieving high hydrogen concentrations in target lesions, especially in cancer treatment.
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