Effectively separating uranium from aqueous solution is pivotal in the sustainable development of the nuclear industry and environmental protection. In this work, non-metal photocatalysts, carbon-doped BN (BCN) nanosheets were used to extract uranium by the photocatalytic reduction technique, and the doping in the form of carbon rings can regulate the bandgap and electronic structure by manipulating carbon amount. Benefiting from the porous structure and strong visible-light absorption, the U(VI) separation ratio of 97.4% could be achieved after 1.5-hour visible irradiation with an apparent rate value of 2.97 h⁻¹ over BCN-80. Additionally, BCN-80 displayed good reusability and stability with the U(VI) separation ratio > 90% even after five cycles, and the enhanced U(VI) photoreduction was attributed to the synergistic effect of photoinduced electrons and formed ketyl radicals. This work demonstrates the great potential of BCN materials in U(VI) enrichment and will lay the foundation for further developing novel semiconductor photocatalysts.

从水溶液中有效分离铀对于核工业的可持续发展和环境保护至关重要。在这项工作中，使用非金属光催化剂，碳掺杂的BN（BCN）纳米片通过光催化还原技术提取铀，并且碳环形式的掺杂可以通过控制碳量来调节带隙和电子结构。得益于其多孔结构和强大的可见光吸收能力，在1.5小时可见光照射后，U（VI）的分离率为97.4％，表观速率值为2.97 h ^-1通过BCN-80。此外，BCN-80甚至在五个循环后，U（VI）的分离率> 90％时仍显示出良好的可重用性和稳定性，并且增强的U（VI）光还原归因于光诱导电子和形成的酮基的协同作用。这项工作证明了BCN材料在U（VI）富集方面的巨大潜力，并将为进一步开发新型半导体光催化剂奠定基础。