Photoactive metal-organic frameworks, MIL-100(Fe), with controllable thickness are coated on plasmonic Ag/AgCl nanowire, for boosting visible light photodegradation of rhodamine B and tetracycline hydrochloride. The morphology and composition of the obtained nano-heterostructure were investigated in detail by SEM imaging, TEM imaging, XRD patterns, FT-IR spectra, N adsorption-desorption curves and TGA patterns. Photoelectric performance test suggested that a Z-scheme photocatalysis system for efficient transfer of photogenerated charge carriers was established between MIL-100(Fe) and plasmonic Ag/AgCl nanowire.
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http://dx.doi.org/10.1039/d1ra08576j | DOI Listing |
Nat Commun
March 2024
NanoPhotonics Centre, Cavendish Laboratory, Department of Physics, JJ Thompson Avenue, University of Cambridge, Cambridge, CB3 0HE, UK.
Surface-enhanced Raman spectroscopy (SERS) harnesses the confinement of light into metallic nanoscale hotspots to achieve highly sensitive label-free molecular detection that can be applied for a broad range of sensing applications. However, challenges related to irreversible analyte binding, substrate reproducibility, fouling, and degradation hinder its widespread adoption. Here we show how in-situ electrochemical regeneration can rapidly and precisely reform the nanogap hotspots to enable the continuous reuse of gold nanoparticle monolayers for SERS.
View Article and Find Full Text PDFJ Environ Sci (China)
April 2024
College of Environmental Engineering, Henan University of Technology, Zhengzhou 450001, China; Department of Chemistry, Tsinghua University, Beijing 100084, China. Electronic address:
The removal of ammonia (NH) emitted from agricultural and industrial activities is of great significance to protect human health and ecological environment. Photocatalytic NH oxidation to N under mild conditions is a promising strategy. However, developing visible light photocatalysts for NH oxidation is still in its infancy.
View Article and Find Full Text PDFChemosphere
January 2024
Ministry Key Laboratory of Oil and Gas Fine Chemicals, School of Chemical Engineering and Technology, Xinjiang University, Urumqi, 830046, China; College of Physics and Center of Quantum Materials & Devices, Chongqing University, Chongqing, 401331, China. Electronic address:
Integration of multi-functional components into one is urgent for creating a viable platform to improve photocatalytic efficiency for environmental treatment. Here, MIL-88B-NH (Fe) was firstly employed to capture Ag cation for the formation of AgCl@MIL-88B-NH (Fe), and then turned into the strongly coupled Ag/AgCl@FeO with sphere-rod-like structure. As prepared Z-scheme Ag/AgCl@FeO heterojunction exhibited outstanding photocatalytic performance of tetracycline (TC) with a removal efficiency of 94.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
November 2023
School of Pharmacy, Shanxi Medical University, Jinzhong, 030619, Shanxi, China.
Building Z-scheme heterojunctions with an electron bridge is a favored function for increasing photocatalytic activity. A facile approach for preparing g-CN/Ag@AgCl ternary heterojunctions by co-precipitation and photoreduction was established in this work. First, via co-precipitation, AgCl was modified on the surface of g-CN to create a broad contact area between AgCl and g-CN.
View Article and Find Full Text PDFMolecules
August 2023
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China.
Gold nanoparticles (AuNPs) possess remarkable optical properties and electrical conductivity, making them highly relevant in various fields such as medical diagnoses, biological imaging, and electronic sensors. However, the existing methods for modulating the optical properties of AuNPs are often under limitations such as a high cost, the complexity of detection, a narrow range of application settings, and irreversibility. In this study, we propose a novel approach to address these challenges by constructing a reversible electrochemical switch.
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