Reactive oxygen species (ROS)-mediated photocatalytic antibacterial materials are emerging as promising alternatives for the antibiotic-free therapy of drug-resistant bacterial infections. However, the overall efficiency of photocatalytic sterilization is restricted by the rapid recombination of the charge carriers. Herein, we design an in-plane π-conjugated donor-acceptor (D-A) system (g-CN-Zn-NC), comprising graphitic carbon nitride (g-CN) as the donor and Zn single-atom anchored nitrogen-doped carbon (Zn-NC) as the acceptor. Experimental and theoretical results reveal that the introduction of Zn-NC induces the formation of an intermediate band in g-CN-Zn-NC, extending the spectral absorption range and facilitating charge carrier transfer and separation. Additionally, the synergistic effects of the dual sites, the N═C-N sites of the g-CN "donor" and the atomic Zn-N sites of the Zn-NC "acceptor", boost ROS production. Consequently, the biocompatible g-CN-Zn-NC effectively kills methicillin-resistant (MRSA) under visible-light irradiation and promotes the healing of MRSA-infected wounds on mouse skin.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.nanolett.4c03853 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Unveiling the Proton-Electron Transfer Pathway in Zn-Embedded N-Doped Carbon Catalyst for Enhanced CO Electroreduction.
ACS Appl Mater Interfaces
January 2025
State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, P. R. China.
Proton-electron transfer (PET) processes play a pivotal role in numerous electrochemical reactions; yet, effectively harnessing them remains a formidable challenge. Consequently, unveiling the PET pathway is imperative to elucidate the factors influencing the efficiency and selectivity of small molecule electrochemical conversion. In this study, a Zn-NC model catalyst with N and C vacancies was synthesized using a hydriding method to investigate the universal impact of PET on CO electroreduction.
View Article and Find Full Text PDFPromoting Hydrogen Transfer in Electrochemical CO Reduction via a Hydrogen on Demand Pathway.
Angew Chem Int Ed Engl
December 2024
Guangdong Provincial Key Laboratory of Fuel Cell Technology, School of Chemistry and Chemical Engineering, South China University of Technology, 510640, Guangzhou, China.
The proceeding of electrochemical CO reduction reaction (CORR) requires the formation of active hydrogen species for CO protonation, while traditional catalysts fail to balance the rate of hydrogen supply and CO protonation. Herein, we propose a "hydrogen on demand" mechanism, in which the polarity of the adsorbed CO is enhanced to allow the capture of hydrogen from water without forming free hydrogen species, realizing the matching rate of hydrogen supply and CO protonation. As a proof of concept, we construct Zn-N sites modified by Se atoms, allowing the proceeding of CORR under the "hydrogen on demand" mechanism with superior efficiency.
View Article and Find Full Text PDFSynthesis of Hollow Zn/ZSM-5 Nanosheets via Different Alkali Treatments with ZIF-8 as a Zn Source for Efficient Aromatization of Methanol.
Langmuir
December 2024
State Key Laboratory of Chemical Resources Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
Diffusion limitations and monofunctional acidity of ZSM-5 molecular sieves affect the catalyst stability and aromatic yield in the reaction of methanol to aromatics (MTA). In this study, based on ZSM-5 nanosheets as parent molecular sieves, Zn-modified hollow ZSM-5 nanosheets were obtained after hydrothermal treatment by adding ZIF-8 or zinc nitrate as a source of Zn while treating with different types and concentrations of alkali solutions. The physical and chemical properties of the fabricated samples and their catalytic performance of methanol aromatization were systematically investigated by a combination of XRD, TEM, N adsorption-desorption, NH-TPD, Py-IR, Al MAS NMR, Si MAS NMR, XPS, and TG characterization analyses and MTA experimental evaluation.
View Article and Find Full Text PDFRegulation of the coordination number of Zn single atoms to boost electrochemical sensing of HO.
Nanoscale
January 2025
School of Chemistry and Chemical Engineering, Qufu Normal University, P. R. China.
Compared with transition metals with partially occupied 3d orbitals, Zn has a filled 3d configuration, which severely restricts electron mobility and hence usually renders Zn intrinsically inactive for electrochemical sensing. Metal single-atom catalysts are a new kind of sensing material. Owing to their unique coordination structure and high atomic utilization rate, metal single-atom catalysts show unique properties, which makes them promising for use in the field of electrochemical sensing.
View Article and Find Full Text PDFAtomic Zn-N Site-Regulated Donor-Acceptor Catalyst for Boosting Photocatalytic Bactericidal Activity.
Nano Lett
December 2024
Department of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
Reactive oxygen species (ROS)-mediated photocatalytic antibacterial materials are emerging as promising alternatives for the antibiotic-free therapy of drug-resistant bacterial infections. However, the overall efficiency of photocatalytic sterilization is restricted by the rapid recombination of the charge carriers. Herein, we design an in-plane π-conjugated donor-acceptor (D-A) system (g-CN-Zn-NC), comprising graphitic carbon nitride (g-CN) as the donor and Zn single-atom anchored nitrogen-doped carbon (Zn-NC) as the acceptor.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!