A near-infrared-activatable polyvinyl alcohol/chitosan composite hydrogel for efficient synergistic bacteria-killing

IF 4.1 3区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-01-28 DOI:10.1016/j.jphotochem.2025.116310

Jinzhao Shu , Zhiguo Hou , Yuqi Zhang , Xueyi Dong , Yue Zhang , Qiangwei Liu , Shijun Kang , Mingliang Liu , Sen Wang , Bin Yang , Jiasheng Qian

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Abstract

In this paper, PVA/CS/CuS-based antibacterial hydrogel was prepared by a simple method. The CuS-based particles were characterized using zeta potentiometers, X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, and scanning electron microscopy. These analyses verified the successful synthesis of CuS@PDA and CuS@PDA@Ag particles. The composite hydrogel exhibited good photothermal effect and antibacterial activity, with silver doping significantly improving its photocatalytic performance. Under 808 nm near-infrared light irradiation, the hydrogel exhibited excellent photothermal conversion ability, with the maximum temperatures of the three hydrogels being 59.2 °C, 61.5 °C, and 64.8 °C, respectively. After 10-minute irradiation, the composite hydrogel exhibited obvious antibacterial activity due to the synergistic effect of hyperthermia and reactive oxygen species, resulting in a bactericidal efficiency of 96.2 % against E. coli and 98.4 % against S. aureus.

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来源期刊

Journal of Photochemistry and Photobiology A-chemistry 化学-物理化学

CiteScore

7.90

自引率

7.00%

发文量

580

审稿时长

48 days

期刊介绍： JPPA publishes the results of fundamental studies on all aspects of chemical phenomena induced by interactions between light and molecules/matter of all kinds. All systems capable of being described at the molecular or integrated multimolecular level are appropriate for the journal. This includes all molecular chemical species as well as biomolecular, supramolecular, polymer and other macromolecular systems, as well as solid state photochemistry. In addition, the journal publishes studies of semiconductor and other photoactive organic and inorganic materials, photocatalysis (organic, inorganic, supramolecular and superconductor). The scope includes condensed and gas phase photochemistry, as well as synchrotron radiation chemistry. A broad range of processes and techniques in photochemistry are covered such as light induced energy, electron and proton transfer; nonlinear photochemical behavior; mechanistic investigation of photochemical reactions and identification of the products of photochemical reactions; quantum yield determinations and measurements of rate constants for primary and secondary photochemical processes; steady-state and time-resolved emission, ultrafast spectroscopic methods, single molecule spectroscopy, time resolved X-ray diffraction, luminescence microscopy, and scattering spectroscopy applied to photochemistry. Papers in emerging and applied areas such as luminescent sensors, electroluminescence, solar energy conversion, atmospheric photochemistry, environmental remediation, and related photocatalytic chemistry are also welcome.

文献相关原料

公司名称

产品信息

阿拉丁

Copper sulfate pentahydrate (CuSO4·5H2O)

阿拉丁

sodium sulfide nonahydrate (Na2S·9H2O)

阿拉丁

polyvinyl alcohol (PVA, 1799)

阿拉丁

chitosan (CS, deacetylation degree > 95 %, Mw = 35kDa)

阿拉丁