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Environmentally friendly terbium, europium, and terbium/europium-loaded garlic peels (Tb@GP, Eu@GP, and Tb/Eu@GP) were successfully synthesized and evaluated as biosorbents for the extraction of enrofloxacin (ENR) from aqueous solutions. Notably, it was found that the adsorption capacity of Tb/Eu@GP (769 mg g −1 ) for enrofloxacin was significantly enhanced compared with unloaded GP (29.8 mg g −1 ) and was superior over Tb@GP (580 mg g −1 ) and Eu@ GP (421 mg g −1 ). The high adsorption capacity of Tb/Eu@ GP reflected the efficiency and cost effectiveness of the adsorption process. In order to gain insight into the modification method and adsorption behaviors, Tb@GP, Eu@GP, and Tb/Eu@GP were fully characterized, and their adsorption kinetics, isotherms, and thermodynamics were investigated. Additionally, Tb/Eu@GP was found to be highly efficient at pH values ranging from 6.0 to 8.0. Besides, ultrapure water containing 5% ammonia could elute 98.1 ± 1.5% of the absorbed ENR from Tb/Eu@GP, and the reusability and regeneration test also revealed the sustainability of Tb/Eu@GP. Moreover, XPS analysis confirmed ligand exchange between the hydroxyl and the fluorine group of enrofloxacin might be the main mechanism in the adsorption process. This work demonstrated loading terbium and europium on agricultural byproduct could be a potential method for developing costeffective and eco-friendly biosorbents for fluoroquinolones.

Boosting the output performance of triboelectric nanogenerators via some unique methods is always a meaningful way to speed up their commercialization. However, the available approach to boost performance is mainly restricted to one physics effect based and the basic research of boosting performance via mutual coupling effects is little research. Herein, a new strategy is creatively proposed based on charge traps from mutual coupling effects, generated from g-C 3 N 4 /MXene-Au composites, to further promote the output performance of triboelectric nanogenerator. It is found that photon-generated carriers coupling surface plasmon effect enables composites filled into tribo-material with visible light is an excellent value in boosting performance. The charge traps from mutual coupling effects for boosting performance are analyzed theoretically and verified by experiments. The output power of boosting-triboelectric nanogenerator (TENG) achieves a sixfold enhancement (20 mW) of normal TENG with polydimethylsiloxane (PDMS) in ambient conditions. This work provides a profound understanding of the working mechanism of mutual coupling effects boosting the performance of TENG and an effective way for promoting TENG output.

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