A novel Z-type BiOCl/Ni-MOF-74 heterojunction with coral reef-like structure for photodegradation of tetracycline and rhodamine B and degradation pathway analysis

Xu, Mingchen; Hu, Hao; Jin, Jiacheng; Yang, Yanzhi; Jin, Wenlou; Dong, Fan; Zhang, Zhipeng; Shao, Min; Wan, Yushan

doi:10.1016/j.mssp.2023.107832

Cited by 13 publications

(2 citation statements)

References 61 publications

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“…The flat-band potentials of the AQs were determined by graphing the reciprocal of the square of the capacitance (1/C 2 ) against the applied voltage (E) and finding the point where the graph intersects the x-axis. [59] As shown in Figure 5a and b, AQs showed the positive slope, which indicated they were n-type semiconductors. The flat band potential (E FB ) of the photocatalyst is typically derived from the Mott-Schottky curves.…”

Section: Characterization Of Aqsmentioning

confidence: 86%

“…To gain further insight into the charge-transfer process and the impact of the substituents on the AQ skeleton on the electronic structures, the Mott-Schottky measurement was conducted to ascertain the energy band structure of the AQs. The at-band potentials of the AQs were determined by graphing the reciprocal of the square of the capacitance (1/C 2 ) against the applied voltage (E) and nding the point where the graph intersects the x-axis [59]. As shown in Fig.…”

Section: Mott-schottky Measurementmentioning

confidence: 99%

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Anthraquinone and its Derivatives as a Recyclable Photocatalyst for Efficient Photocatalytic Degradation of Rhodamine B in Water under Visible Light

Su,

Zhang,

Meng

et al. 2024

ChemistrySelect

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This study presents findings that suggest it is possible to fine‐tune and enhance the optical properties of anthraquinone (AQ) and its photocatalytic performance in the degradation of rhodamine B (RhB) at the molecular level through varying its keleton substituents. Specifically, the electron‐withdrawing substituent demonstrates a more pronounced improvement effect compared to the electron‐donating substituent. Out of the several compounds, 2‐carboxyanthraquinone (AQ−COOH) exhibits the highest photocatalytic activity. This is due to its ionization in water, generating H+ ions that enhance the destruction of RhB through photodegradation. After 30 min of exposure to visible light, the degradation rate of RhB reaches an impressive 99.9 %. It is noteworthy that a hydrochloric acid solution with a concentration of 0.5 mmol ⋅ L−1 has a considerable promoting impact on the photodegradation of RhB catalyzed by AQ−COOH, and that the total degradation of RhB can be accomplished in 15 min. In addition, AQ−COOH also has good applicability for the degradation of tetracycline, methylene blue, and methyl orange. As a recyclable solid catalyst, the catalytic activity of AQ−COOH remained mostly unchanged after being used five times. Additionally, AQ−COOH did not undergo degradation when exposed to visible light, indicating its excellent stability in the process of catalyzing RhB degradation. According to quenching experiments and EPR spectrum characterizations, the photo‐generated active species oxygen vacancies (h+), photogenerated electrons (e−), superoxide free radicals (O2⋅−), singlet oxygen (1O2) and hydroxyl radical (•OH) are involved in the hypothesized photo‐catalytic degradation mechanism.

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Section: Characterization Of Aqsmentioning

confidence: 86%

Section: Mott-schottky Measurementmentioning

confidence: 99%