摘要
      抗生素和抗生素抗性基因（ARGs）是新兴的环境污染物。TiO2光催化降解已被证明是一种重要的去除技术，但其光催化能力仍有待提高。在我们的工作中，从秸秆的水热碳化废液中提取了天然氮掺杂碳量子点（N-SCQDs），并将其附着在TiO2纳米球上，用于修复抗生素[磺胺嘧啶（SA）]和ARGs（sul1、sul2和intl1）。SA的最大降低率接近100%，ARG的降低率分别为52.91–83.52%/lg10（sul1）、32.10–68.23%/lg 10（sul2）和46.29–76.55%/lg 10。秸秆衍生物的温度会影响其光电性能。N-SCQDs@TiO2扩大了一种具有潜力的新型高效降解催化剂的应用范围，为农业废弃物水热碳化废液提供了一种新的途径。
Abstract
Antibiotics and antibiotic resistance genes (ARGs) are emerging environmental contaminants. TiO2 photocatalytic degradation has been proved an important removal technique, but its photocatalytic ability needs be improved. In our work, natural N-doped carbon quantum dots (N-SCQDs) were extracted from hydrothermal carbonization waste liquid of straw and were attached onto TiO2 nanospheres for remediating antibiotics [sulfadiazine (SA)] and ARGs (sul1, sul2, and intl1). The maximum SA reduction rates were close to 100%, and the ARG reduction rates were 52.91–83.52%/lg10 (sul1), 32.10–68.23%/lg10 (sul2), and 46.29–76.55%/lg10 (inlt1). The temperature of the straw derivatives would influence their photoelectric properties. N-SCQDs@TiO2 expands the application range of a novel potential high-efficiency degradation catalyst and offers a new way of hydrothermal carbonization waste liquid of agricultural waste.

https://pubs.acs.org/doi/full/10.1021/acsomega.2c05979