CuS Nanoparticles/MIL-125(Ti) Heterojunction as Photocatalyst for the Photodegradation of Tetracycline
Source abstract
Abstract
MIL-125(Ti) is an attractive material in photocatalysis due to its notable characteristics, including its expansive specific surface area, porous structure, high thermal stability, and chemical resistance. Unfortunately, the high electron–hole recombination rate and weak utilization of visible light restrict its practical application. Here, a CuS nanoparticle/MIL-125(Ti) heterojunction with a compact interface contact was prepared by a facile hydrothermal method for photocatalytic tetracycline degradation. The aligned internal electric field and interface structure of the CuS nanoparticles/MIL-125(Ti) heterojunction show promise in effectively addressing the aforementioned challenges. Detailed characterization showed that CuS nanoparticles/MIL-125(Ti) generated a redshift in light absorption, and the photogenerated electron–hole recombination rate was reduced by about 67.5% compared with MIL-125(Ti), greatly improving the photocatalytic performance. Photogenerated electrons between the conductive band of CuS nanoparticles and MIL-125(Ti) with Ti 4+ to Ti 3+ reduction contributed to the enhanced photocatalytic performance, and the generated active species ( h +, ·OH, ·O 2 – ) degraded tetracycline rapidly. The kinetic parameters of tetracycline degradation by the CuS/MIL-125(Ti) composite with an optimal doping amount are 12.7 and 7.9 times higher than those of a single component.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Copper-based nanomaterials and applications · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
National & Local United Engineering Laboratory for New Petrochemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
College of Environmental Science and Engineering, Hunan University, Changsha 410082, P.R. China
Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, P.R. China
Funding
Natural Science Foundation of Hunan Province · Education Department of Hunan Province · Hunan province college students research learning and innovative experiment project
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