Congyue Zhao,Chunling Li,Minghui Chen,Tianqi Niu,Qian Zhao,Tianjun Ni,Dong Yan,Weidong Wu,Dong Liu
The exploitation of an efficient way to treat antineoplastic doxorubicin hydrochloride (DOX) is critical due to its harmful effects on the ecological system and human health. Recently, photocatalysis has emerged as one of the most feasible strategies to resolve this crisis. However, the development of novel catalysts with highly efficient photocatalytic activity still remains a great challenge. Herein, a novel 0D/3D Nb 2 O 5 QDs/C-doped g-C 3 N 4 type-II heterojunction with outstanding adsorption and photocatalytic degradation capacities for DOX was developed based on combining elemental doping, morphological design and heterojunction fabrication. The C-doping significantly promotes the visible light response and charge migration of g-C 3 N 4 , thus benefiting to the removal of DOX. Meanwhile, the 0D/3D heterogeneous morphology endows the catalysts with abundant active sites, high adsorptive capacity, favourable structural stability, high surface area and enhanced charge migration, which all contribute to the excellent adsorption and photocatalytic performance. The superoxide radicals shown a prominent role in the photocatalytic reaction. In addition, the Toxicity Estimation Software Tool, liquid chromatography-mass spectrometry and density functional theory calculations were also employed to investigate the DOX degradation mechanism, possible pathways and corresponding toxicity of intermediates. This work provides a promising way to develop highly efficient catalysts for the degradation of DOX.
Hybrid supercapacitors (HSCs), which are expected to possess the good characteristics of both lithium batteries and supercapacitors, have become a hot research topic in recent years for catering to the growing market for electric vehicles (EVs) and hybrid electric vehicles (HEVs). Herein, we demonstrate an advanced hybrid material construction by the orthorhombic Nb2O5 quantum dots embedded in nitrogen-doped porous carbon derived from ZIF-8 dodecahedrons, referred to as NQD–NC. Then the applications of this material in LIBs and HSCs are studied in-depth. The LIB test reveals that the novel Nb2O5-based material shows excellent high-rate capability and long-term cyclic stability. Importantly, by assembling a HSC device using a NQD–NC anode and a commercial activated carbon cathode with an organic electrolyte, the HSC shows superior electrochemical performance including ultra-high energy and power density (76.9 W h kg−1 and 11 250 W kg−1, respectively) and superior cyclic stability (capacity retention of ∼85% at 5 A g−1 after 4500 cycles in a voltage range of 0.5–3.0 V). The excellent electrochemical performance of the HSCs indicates combining the advantages of lithium-ion batteries and supercapacitors, which is promising for the next generation of energy storage systems.
危险品化学品经营许可证（带存储）