Abstract
This study investigated the inhibition effect of nanoscale silver–copper particle (20 nm) against Coriolus versicolor and Gloeophyllum trabeum. Poplar wood samples (Populus L.) were vacuum-impregnated using aqueous nano-AgCu solutions at concentrations of 0.01 %, 0.02 %, 0.03 %, 0.05 %, 0.075 %, and 0.1 %. Alkaline copper quaternary (ACQ, 0.1 %), boric acid (0.2 %) and untreated control group (CK) were employed for comparisons. Decay resistance and leachability were studied. The anti-fungi effects were compared between nano-AgCu, nano-Ag, Ag+ (silver nitrate), Cu2+ (copper nitrate), and a composite of Ag+–Cu2+. Nano-AgCu particle exhibited effective resistance to fungi after 12 weeks of exposure. The threshold retention of the nano-AgCu against C. versicolor and G. trabeum on poplar wood was 0.19 kg m−3 and 0.62 kg m−3, respectively. The silver–copper nanoparticles demonstrated excellent leach resistance, and the inhibition effect was retained after leaching. The nano-AgCu particle provided better antifungal effects than single ions or metal nanoparticles. This study illustrates the potential of using nano-AgCu particle as an efficient wood preservative compared to commercial water-soluble preservatives.
Funding source: Natural Science Foundation of Shandong Province
Award Identifier / Grant number: No. ZR2021MC095
Acknowledgments
The authors would like to acknowledge Ruizhi Gong, Jiajia Luo, Xiaojie Hu, Jianyu Gao and Ziyi Jiao from Shandong Agricultural University for their help in writing and drawing.
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Research ethics: Not applicable.
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Author contributions: Xiwei Wang: methodology, investigation, formal analysis, writing – original draft, writing – review & editing. Tengfei Yi: methodology, writing – review & editing, formal analysis. Hongxue Luo: methodology, investigation, formal analysis, writing – review & editing. Yanran Qi: investigation, writing – review & editing. Fengbiao Yao: formal analysis, writing – review & editing. Yiliang Liu: investigation, writing – review & editing. Yongfeng Li: conceptualization, methodology, resources, funding acquisition, project administration, writing – review & editing. All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Competing interests: The authors state no conflict of interest.
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Research funding: This study was supported by the Project of Shandong Provincial Natural Science Foundation (Funder: Natural Science Foundation of Shandong Province; Grant no. ZR2021MC095).
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Data availability: The raw data can be obtained on request from the corresponding author.
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Supplementary Material
This article contains supplementary material (https://doi.org/10.1515/hf-2023-0128).
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