Novel AgI/MIL-125(Ti) heterojunction for efficient photocatalytic degradation of organic pollutants under visible light: Interfacial electron transfer pathway and degradation mechanism

Liu, Xiao; Jia, Fu; Peng, Xin; Jiang, Longbo; Yang, Jinjuan; Wang, Hou

doi:10.1007/s11270-023-06255-2

Cited by 2 publications

(1 citation statement)

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“…The synthesis of MIL-125(Ti) was referred to the study by Liu et al In a mixture of 36 mL of N, N-dimethylformamide and 4.0 mL of absolute methanol, 2.2 g of 1,4-benzenedicarboxylic acid was dissolved. 2.4 mL of tetrabutyl titanate was quickly added to the mixture and stirred for 30 min.…”

Section: Methodsmentioning

confidence: 99%

CuS Nanoparticles/MIL-125(Ti) Heterojunction as Photocatalyst for the Photodegradation of Tetracycline

Xi,

Liu,

Fei

et al. 2024

ACS Appl. Nano Mater.

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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.

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Section: Methodsmentioning

confidence: 99%