Spin‐state Conversion by Asymmetrical Orbital Hybridization in Ni‐doped Co₃O₄ to Boost Singlet Oxygen Generation for Microbial Disinfection

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(12)

Published: Jan. 25, 2024

Singlet oxygen (1 O2 ) plays a significant role in environmental and biomedical disinfection fields. Electrocatalytic processes hold great potential for 1 generation, but remain challenging. Herein, facile Ni doping converted spin-state transition approach is reported boosting production. Magnetic analysis theoretical calculations reveal that occupied at the octahedral site of Co3 O4 can effectively induce low-to-high transition. The high-spin Ni-Co3 generate appropriate binding strength enhance electron transfer between Co centers with intermediates, thereby improving catalytic activity effective generating . In neutral conditions, 1×106 CFU mL-1 Gram-negative ESBL-producing Escherichia coli (E. coli) could be inactivated by system within 5 min. Further antibacterial mechanisms indicate lead to cell membrane damage DNA degradation so as irreversible death. Additionally, developed inactivate bacteria from wastewater bioaerosols. This work provides an strategy designing electrocatalysis boost generation process.

Language: Английский

---

Enhanced Oxygen Evolution and Zinc‐Air Battery Performance via Electronic Spin Modulation in Heterostructured Catalysts

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(31)

Published: May 25, 2024

Beyond optimizing electronic energy levels, the modulation of spin configuration is an effective strategy, often overlooked, to boost activity and selectivity in a range catalytic reactions, including oxygen evolution reaction (OER). This frequently accomplished using external magnetic fields, which makes it impractical for real applications. Herein, achieved by engineering Ni/MnFe

Language: Английский

---

Nanozyme-induced deep learning-assisted smartphone integrated colorimetric and fluorometric dual-mode for detection of tetracycline analogs

Analytica Chimica Acta, Journal Year: 2024, Volume and Issue: 1297, P. 342373 - 342373

Published: Feb. 14, 2024

Language: Английский

---

Trichromatic ratiometric fluorescent sensor based on machine learning and smartphone for visual and portable monitoring of tetracycline antibiotics

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 454, P. 140492 - 140492

Published: Nov. 21, 2022

Language: Английский

---

Insights into the antibacterial mechanism of MoS2/CoS2 heterostructure nanozymes with double enzyme-like activities for MRSA-infected wound therapy

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 461, P. 141959 - 141959

Published: Feb. 20, 2023

Language: Английский

---

Bimetallic Fe-Co Nanoalloy Confined in Porous Carbon Skeleton with Enhanced Peroxidase Mimetic Activity for Multiple Biomarkers Monitoring

Journal of Analysis and Testing, Journal Year: 2023, Volume and Issue: 7(1), P. 53 - 68

Published: Jan. 2, 2023

Language: Английский

---

Reactive oxygen nanobiocatalysts: activity-mechanism disclosures, catalytic center evolutions, and changing states

Chemical Society Reviews, Journal Year: 2023, Volume and Issue: 52(19), P. 6838 - 6881

Published: Jan. 1, 2023

This review offers a comprehensive and timely summarization of the most recent breakthroughs future trends in creating reactive oxygen nanobiocatalysts, which guides their broad applications diverse biomedical biological fields.

Language: Английский

---

Machine Learning System To Monitor Hg²⁺ and Sulfide Using a Polychromatic Fluorescence-Colorimetric Paper Sensor

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(7), P. 9800 - 9812

Published: Feb. 7, 2023

An optical monitoring device combining a smartphone with polychromatic ratiometric fluorescence-colorimetric paper sensor was developed to detect Hg2+ and S2– in water seafood. This included the detection of food deterioration made possible by processing sensing data machine learning algorithm. The fluorescence composed blue fluorescent carbon quantum dots (CDs) (BU-CDs) green red CdZnTe (QDs) (named GN-QDs RD-QDs, respectively). experimental results density functional theory (DFT) prove that incorporation Zn can improve stability yield QDs. According dynamic static quenching mechanisms, RD-QDs were quenched sulfide, respectively, but BU-CDs not sensitive them. system colors change from as concentration two detectors rises, limits (LOD) 0.002 1.488 μM, respectively. Meanwhile, probe combined hydrogel construct visual intelligent test strip, which realized freshness. In addition, assisted multiple methods used text sulfide real samples. It be concluded fabulous stability, sensitivity, practicality exhibited this mechanism give it unlimited potential for assessing contents toxic hazardous substances sulfide.

Language: Английский

---

NiMo/CoMoO₄ Heterostructure with Confined Oxygen Vacancy for Active and Durable Alkaline Hydrogen Evolution Reaction

ACS Applied Energy Materials, Journal Year: 2023, Volume and Issue: 6(14), P. 7658 - 7671

Published: July 10, 2023

The sluggish kinetics of electrocatalysts in the alkaline hydrogen evolution reaction (HER) is a critical challenge to attain efficient progress water electrolysis for carbon-neutral production. Here, we present high-performance and durable heterostructure NiMo/CoMoO4 HER constructed via two-pot situ growth strategy on nickel foam (NF). density active sites surface area hybrid catalyst augmented almost three-fold compared those pristine CoMoO4. composed metallic NiMo oxygen vacancy (Ov)-confined CoMoO4 facilitated H adsorption side OH oxide side. hierarchical NF featured low overpotential 102 mV at 10 mA cm–2, approaching that platinum carbon (83 mV) 1.0 M KOH. turnover frequency 0.012 s–1 100 six times higher than CoMoO4, 0.002 s–1. In addition, fabricated highly 30 cm–2 h. Faradaic efficiency recorded by gas chromatograph revealed nearly 86–95% production efficiency, respectively.

Language: Английский

---

Engineering Platelet Membrane‐Coated Bimetallic MOFs as Biodegradable Nanozymes for Efficient Antibacterial Therapy

Small, Journal Year: 2023, Volume and Issue: 20(23)

Published: Dec. 27, 2023

Abstract Nanocatalytic‐based wound therapeutics present a promising strategy for generating reactive oxygen species (ROS) to antipathogen promote healing. However, the full clinical potential of these nanocatalysts is limited by their low reactivity, targeting ability, and poor biodegradability in microenvironment. Herein, bio‐organic nanozyme developed encapsulating FeZn‐based bimetallic organic framework (MOF) (MIL‐88B‐Fe/Zn) platelet membranes (PM@MIL‐88B‐Fe/Zn) antimicrobial activity during The introduction Zn MIL‐88B‐Fe/Zn modulates electronic structure Fe thus accelerating catalytic kinetics its peroxidase‐like catalytically generate powerful ROS. membrane coating MOF innovatively enhanced interaction between nanoparticles biological environment, further developing bacterial‐targeted therapy with excellent antibacterial against both gram‐positive gram‐negative bacteria. Furthermore, this markedly suppressed levels inflammatory cytokines promoted angiogenesis vivo effectively treat skin surface wounds accelerate PM@MIL‐88B‐Fe/Zn exhibited superior biodegradability, favourable metabolism non‐toxic accumulation, eliminating concerns regarding side effects from long‐term exposure. high features, nanoenzymes study provide useful insights into design synthesis nanocatalysts/nanozymes practical biomedical applications.

Language: Английский

---