Scholarlink

<p>Wood is a naturally porous material that is highly susceptible to fungal degradation, which significantly limits its practical applications. In this study, carbon quantum dots (CQDs) were in-situ synthesized in wood substrates through a urea pretreatment with concentrations of 4, 8, 12, 16, 20% and microwave-assisted synthesis method, utilizing wood and urea as carbon/nitrogen sources respectively. The resulting CQDs-wood exhibited significant antifungal effects against <i>Gloeophyllum trabeum</i> by decreasing the mass loss of wood samples from 48.0% (untreated control) to 2.89% (16% urea pretreated) during the standard decay test. The CQDs extracted from CQDs-wood showed complete inhibition of fungal hyphal growth at 16% urea concentration, while urea itself exhibited negligible antifungal effects. This indicates that the enhanced decay resistance of CQDs-wood primarily originates from in-situ synthesized CQDs. Lignin in wood was found to be the primary carbon source for the formation of CQDs. The antifungal mechanism was further discussed. These findings highlight the potential of using the in-situ synthesis of CQDs as an efficient wood preservation strategy, which can significantly prolong the service life of wood.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

In-situ synthesis of carbon quantum dots in wood for enhanced decay resistance

  • 期刊论文

  • 发表日期：

    2026年5月21日

查看全文
  • Xinyi Chen,
  • Yanan Dong,
  • Lei Yu,
  • Xiaoqi Zhao,
  • Meng Zhou,
  • Jinzhen Cao

摘要

Wood is a naturally porous material that is highly susceptible to fungal degradation, which significantly limits its practical applications. In this study, carbon quantum dots (CQDs) were in-situ synthesized in wood substrates through a urea pretreatment with concentrations of 4, 8, 12, 16, 20% and microwave-assisted synthesis method, utilizing wood and urea as carbon/nitrogen sources respectively. The resulting CQDs-wood exhibited significant antifungal effects against Gloeophyllum trabeum by decreasing the mass loss of wood samples from 48.0% (untreated control) to 2.89% (16% urea pretreated) during the standard decay test. The CQDs extracted from CQDs-wood showed complete inhibition of fungal hyphal growth at 16% urea concentration, while urea itself exhibited negligible antifungal effects. This indicates that the enhanced decay resistance of CQDs-wood primarily originates from in-situ synthesized CQDs. Lignin in wood was found to be the primary carbon source for the formation of CQDs. The antifungal mechanism was further discussed. These findings highlight the potential of using the in-situ synthesis of CQDs as an efficient wood preservation strategy, which can significantly prolong the service life of wood.