Pharmaceuticals and personal care products (PPCPs) are increasingly being scrutinized by the scientific community due to their environmental persistence. Therefore, the development of novel environmentally compatible and energy-efficient technologies for their removal is highly anticipated. In this work, a novel metal-free photocatalytic nanoreactor was successfully synthesized by anchoring carbon dots to hollow carbon nitride nanospheres (HCNS/CDs). The unique structure of these hollow nanospherical HCNS/CDs hybrids endowed them with a high population of reactive sites, while enhancing optical absorption due to internal light reflection. Simultaneously, the CDs served as “artificial antennas” to absorb and convert photons with low energy, due to their superior up-converting properties. Consequently, the HCNS/CDs demonstrated excellent photodegradation activities for the degradation of PPCPs under broad-spectrum irradiation. Remarkedly, 10 mg/L of naproxen (NPX) was completely degraded following 5 min of natural solar irradiation. It was further revealed that the O₂^•- played a significant role during the photocatalytic process, which could lead to the decomposition of NPX. The effects of natural water matrices and the degradation of trace PPCPs further supported that this photocatalytic system may be efficaciously applied for the remediation of PPCPs contamination in ambient waterways.

由于其环境持久性，药品和个人护理产品（PPCP）越来越受到科学界的审查。因此，人们迫切期望开发出新的与环境兼容且节能的技术来去除它们。在这项工作中，通过将碳点固定在中空的氮化碳纳米球（HCNS / CD）上，成功合成了一种新型的无金属光催化纳米反应器。这些空心纳米球形HCNS / CD杂化物的独特结构使它们具有大量反应位，同时由于内部光反射而增强了光吸收。同时，由于CD具有出色的上变频特性，它们还充当了“人造天线”来吸收和转换低能量的光子。所以，HCNS / CDs在广谱辐照下对PPCPs的降解表现出出色的光降解活性。值得注意的是，自然阳光照射5分钟后，萘普生（NPX）10 mg / L完全降解。进一步发现，O₂ ^•-在光催化过程中起重要作用，这可能导致NPX分解。天然水基质的影响和痕量PPCP的降解进一步支持了这种光催化系统可以有效地用于补救环境水道中PPCP的污染。