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.

中文翻译：

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用纳米银铜颗粒处理的杨木：真菌降解和浸出分析

本研究调查了纳米级银铜颗粒（20 nm）对云芝和格罗兰属 小梁。杨木样品（胡杨属L.) 使用浓度为 0.01%、0.02%、0.03%、0.05%、0.075% 和 0.1% 的纳米银铜水溶液进行真空浸渍。采用碱性季铜（ACQ，0.1%）、硼酸（0.2%）和未处理的对照组（CK）进行比较。研究了抗腐烂性和浸出性。纳米银铜、纳米银、银的抗真菌效果比较+（硝酸银）、铜2+（硝酸铜）和Ag的复合物+–铜2+。纳米银铜颗粒暴露 12 周后表现出有效的抗真菌能力。纳米银铜的阈值保留杂色念珠菌和横梁G.杨木上为 0.19 kg m−3和 0.62 千克米−3， 分别。银铜纳米粒子表现出优异的抗浸出性，且浸出后仍保留抑制效果。纳米银铜颗粒比单一离子或金属纳米颗粒具有更好的抗真菌效果。这项研究说明了与商业水溶性防腐剂相比，使用纳米银铜颗粒作为有效木材防腐剂的潜力。