This work releases research progress carried out on carbon quantum dots (CQDs) obtained from agave bagasse with the aim of applying their UV-blue luminescence properties, as a novel way to improve plant growth and protecting them from the solar UV harmful effects. This results in an increasing exposure to blue irradiation, which is avidly absorbed by chlorophyll, thus strengthening plant photosynthesis. The developed green route process is based on the pyrolysis of agave bagasse fibers, a cheap carbon precursor from the tequila’s industries waste. After drying and grinding the fibers, three samples of powdered agave were burned in the open air at 500 °C for 0.5 h, 1.0 h and 2.0 h seeking to synthesize CQDs samples of different sizes. The optical absorption and photoluminescence (PL) response of all samples were similar, that is, a strong UV absorption and a PL peak on the blue region. Furthermore, their highest PL quantum yield of 15.74% was obtained for the 2 h pyrolysis time sample that was applied on acrylic sheets in a greenhouse experiment. The groups of plants with this cover had faster germination rates and better plant growth rates than two control groups without CQDs.

这项工作发布了从龙舌兰甘蔗渣中提取的碳量子点（CQD）的研究进展，旨在利用其紫外蓝色发光特性，作为改善植物生长并保护其免受太阳紫外线有害影响的新方法。这导致更多地暴露在蓝色照射下，而蓝色照射被叶绿素大量吸收，从而加强植物的光合作用。开发的绿色路线工艺基于龙舌兰甘蔗渣纤维的热解，龙舌兰甘蔗渣纤维是龙舌兰酒工业废料中的廉价碳前体。干燥和研磨纤维后，将三个龙舌兰粉末样品在 500 °C 下露天燃烧 0.5 小时、1.0 小时和 2.0 小时，以合成不同尺寸的 CQD 样品。所有样品的光吸收和光致发光（PL）响应相似，即 强烈的紫外线吸收和蓝色区域的 PL 峰。此外，在温室实验中应用于亚克力板上的 2 小时热解时间样品获得了 15.74% 的最高 PL 量子产率。与没有 CQD 的两个对照组相比，具有这种覆盖物的植物组具有更快的发芽率和更好的植物生长率。