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

Mayin Zhang,

Wenyi Meng

и другие.

ChemistrySelect, Год журнала: 2024, Номер 9(25)

Опубликована: Июнь 27, 2024

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

Язык: Английский

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

Mayin Zhang,

Wenyi Meng

и другие.

ChemistrySelect, Год журнала: 2024, Номер 9(25)

Опубликована: Июнь 27, 2024

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

Язык: Английский

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