Key Laboratory of Wooden Materials Science and Engineering, Beihua University, 3999 East Binjiang Road, Fengman District, Jilin, 132013, China.
School of Chemical Engineering, Northeast Electric Power University, 169 Changchun Road, Shipyard District, Jilin, 132012, China.
Environ Pollut. 2024 Nov 15;361:124715. doi: 10.1016/j.envpol.2024.124715. Epub 2024 Aug 14.
Sulfamethoxazole (SMX) is one of major antibiotic contaminants in current aqueous environment. In this paper, waste loofah and melamine were co-carbonized to prepare biochar-doped g-CN (CCN) by a one-pot method and then combined with CoPMoVO (CoPMoV) using a binder to obtain the novel polyoxometalates (POMs) photocatalytic composites (CCN/CoPMoV). The incorporation of CoPMoV dramatically reduced the photogenerated carrier recombination and led to a small band gap. Under visible light, the synergetic activation from biochar, g-CN and POMs can remove 98.5% of SMX (k = 0.215 min) in the peroxymonosulfate (PMS) system within 20 min and keep its high stability with the degradation of 88.9% after five cycles. Multi-active sites from CCN/CoPMoV are contributed to develop the most active species of SO, ·OH, O, and h. The validity in the degradation of SMX makes CCN/CoPMoV a promising and potential material for the removal of aqueous pollutants in the future.
磺胺甲恶唑（SMX）是当前水环境中主要的抗生素污染物之一。本文采用一步法将废弃丝瓜络和三聚氰胺共碳化制备了负载生物炭的 g-CN（CCN），然后与 CoPMoVO（CoPMoV）结合使用粘结剂得到了新型多金属氧酸盐（POMs）光催化复合材料（CCN/CoPMoV）。CoPMoV 的掺入显著降低了光生载流子的复合，并导致带隙较小。在可见光下，生物炭、g-CN 和 POMs 的协同活化可在过一硫酸盐（PMS）体系中在 20 分钟内去除 98.5%的 SMX（k=0.215 min），并在 5 次循环后保持 88.9%的高稳定性。CCN/CoPMoV 中的多活性位点有助于开发 SO4·−、·OH、O2 和 h+等最活跃的物种。SMX 的降解有效性使 CCN/CoPMoV 成为未来去除水污染物的一种有前途和有潜力的材料。
