Direct Z-scheme In2O3/AgI heterojunction with oxygen vacancies for efficient molecular oxygen activation and enhanced photocatalytic degradation of tetracycline

Liu, Jue; Meng, Can; Zhang, Xinyu; Wang, Senyu; Duan, Kuan; Li, Xian; Hu, Yuanan; Cheng, Hefa

doi:10.1016/j.cej.2023.143319

Cited by 51 publications

(5 citation statements)

References 77 publications

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“…In addition, ESR measurements (Figure g) suggest the formation of oxygen vacancies in both pure BOB and BOBZ-1, and the concentration increases with increasing Zn doping . Such defects played a critical role in enhancing the photocatalytic performance toward CIP degradation, as manifested below. , …”

Section: Resultsmentioning

confidence: 88%

Zinc-Doped BiOBr Hollow Microspheres for Enhanced Visible Light Photocatalytic Degradation of Antibiotic Residues

Tang,

Tai,

Song

et al. 2024

Langmuir

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Photocatalysis represents an effective technology for environmental remediation. Herein, a series of Zn-doped BiOBr hollow microspheres are synthesized via one-pot solvothermal treatment of bismuth nitrate and dodecyl ammonium bromide in ethylene glycol along with a calculated amount of zinc acetate. Whereas the materials morphology and crystal structure remain virtually unchanged upon Zndoping, the photocatalytic performance toward the degradation of ciprofloxacin is significantly improved under visible light irradiation. This is due to the formation of a unique band structure that facilitates the separation of photogenerated electron−hole pairs, reduced electrontransfer resistance, and enhanced electron mobility and carrier concentration. The best sample consists of a Zn doping amount of 1%, which leads to a 99.2% degradation rate of ciprofloxacin under visible photoirradiation for 30 min. The resulting photocatalysts also exhibit good stability and reusability, and the degradation intermediates exhibit reduced cytotoxicity compared to ciprofloxacin. These results highlight the unique potential of BiOBr-based photocatalysts for environmental remediation.

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Section: Resultsmentioning

confidence: 88%

Zinc-Doped BiOBr Hollow Microspheres for Enhanced Visible Light Photocatalytic Degradation of Antibiotic Residues

Tang,

Tai,

Song

et al. 2024

Langmuir

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“…In order to elucidate the most important roles of various substances in photocatalytic reactions and to show the MO photocatalytic mechanism, we evaluated several free radical trapping experiments (Figure a). We selected five capture scavengers, namely, potassium iodide (KI, a scavenger of h + ), L -histidine (a scavenger of 1 O 2 ), trichloromethane (CHCl 3 , a scavenger of •O 2 – ), silver nitrate (AgNO 3 , a scavenger of e – ), and tert-butanol (TBA, •OH scavengers). − As shown in Figure a, the degradation rate of MO over the BiO[ClBrI(CO 3 ) 0.5 ] catalyst was close to 100% without any capture agent. When KI, L -histamine, and CHCl 3 were added, the photodegradation activities were significantly inhibited, and the degradation rate of MO decreased sharply to 27.2, 40.0, and 59.8%, which confirmed that h + and 1 O 2 played a major role in the photocatalytic degradation of MO and •O 2 – played a secondary role in the photocatalytic degradation of MO.…”

Section: Resultsmentioning

confidence: 97%

Preparation of Novel Layered High Entropy Bismuth-Based Materials and their Photocatalytic Degradation Mechanism

Wen,

Mu,

Zhu

et al. 2024

Langmuir

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We prepared BiOCl, BiO(ClBr), BiO(ClBrI), and BiO[ClBrI(CO3)0.5] materials using a simple coprecipitation method. It was found that adjusting the number of anions in the anion layer was conducive to adjusting the band structure of BiOX and could effectively promote the migration and separation of photogenerated carriers, thus improving the photocatalytic activity. We first selected methyl orange (MO) as the study pollutant and compared it with BiOCl, BiO(ClBr), and BiO(ClBrI). The first-order kinetic constants of MO degradation by BiO[ClBrI(CO3)0.5] increased by 90.3, 33.9, and 3.1 times, respectively. The photocatalytic degradation rate of methylene blue by BiO[ClBrI(CO3)0.5] was 89.5%, indicating the excellent photocatalytic performance of BiO[ClBrI(CO3)0.5]. The stability of BiO[ClBrI(CO3)0.5] was demonstrated through cyclic experiments and XRD analysis before and after the reaction. The photocatalytic degradation of MO by BiO[ClBrI(CO3)0.5] showed that h+ and 1O2 were the main active oxidizing species and •O2 – was the secondary active substance. Overall, our work provides new ideas for the synthesis and degradation of organic pollutants by using two-dimensional anionic high-entropy materials.

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“…The authors have cited additional references within the Supporting Information. [37][38][39][40][41][42][43][44][45][46][47] Foundation (2023T160592, 2020M682331), and the Certificate of Postdoctoral Research Grant in Henan Province (202001007).…”

Section: Methodsmentioning

confidence: 99%

Cd/Cd(OH)₂ Nanosheets Enhancing the Electrocatalytic Activity of CO₂ Reduction to CO

Jia,

Qi,

Yang

et al. 2023

Chemistry A European J

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Electric‐driven conversion of carbon dioxide (CO2) to carbon monoxide (CO) under mild reaction conditions offers a promising approach to mitigate the greenhouse effect and the energy crisis. The surface engineering is believed to be one of the prospective methods for enhancing the electrocatalytic activity of CO2 reduction. Herein, the hydroxyl (OH) groups were successfully introduced to cadmium nanosheets to form cadmium and cadmium hydroxide nanocomposites (i.e. Cd/Cd(OH)2 nanosheets) via a facile two‐step method. The as‐prepared Cd/Cd(OH)2/CP (CP indicates carbon paper) electrode displays excellent electrocatalytic activity for CO2 reduction to produce CO. The Faradaic efficiency of CO reaches 98.3% and the current density achieves 23.8 mA cm‐2 at ‐2.0 V vs. Ag/Ag+ in a CO2‐saturated 30 wt% 1‐butyl‐3‐methylimidazole hexafluorophosphate ([Bmim]PF6)‐65 wt% acetonitrile (CH3CN)‐5 wt% water (H2O) electrolyte. And the CO partial current density can reach up to 71.6 mA cm‐2 with the CO Faradaic efficiency of more than 85% at ‐2.3 V vs. Ag/Ag+, which stands out against Cd/CP, Cd(OH)2/CP, and Cd/CdO/CP electrodes. The excellent electrocatalytic performance of the Cd/Cd(OH)2/CP electrode can be attributed to its unique structural properties, suitable OH groups, perfect interaction with electrolyte, abundant active sites and fast electron transfer rate.

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Direct Z-scheme In2O3/AgI heterojunction with oxygen vacancies for efficient molecular oxygen activation and enhanced photocatalytic degradation of tetracycline

Cited by 51 publications

References 77 publications

Zinc-Doped BiOBr Hollow Microspheres for Enhanced Visible Light Photocatalytic Degradation of Antibiotic Residues

Zinc-Doped BiOBr Hollow Microspheres for Enhanced Visible Light Photocatalytic Degradation of Antibiotic Residues

Preparation of Novel Layered High Entropy Bismuth-Based Materials and their Photocatalytic Degradation Mechanism

Cd/Cd(OH)₂ Nanosheets Enhancing the Electrocatalytic Activity of CO₂ Reduction to CO

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Direct Z-scheme In2O3/AgI heterojunction with oxygen vacancies for efficient molecular oxygen activation and enhanced photocatalytic degradation of tetracycline

Cited by 51 publications

References 77 publications

Zinc-Doped BiOBr Hollow Microspheres for Enhanced Visible Light Photocatalytic Degradation of Antibiotic Residues

Zinc-Doped BiOBr Hollow Microspheres for Enhanced Visible Light Photocatalytic Degradation of Antibiotic Residues

Preparation of Novel Layered High Entropy Bismuth-Based Materials and their Photocatalytic Degradation Mechanism

Cd/Cd(OH)2 Nanosheets Enhancing the Electrocatalytic Activity of CO2 Reduction to CO

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Product

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Cd/Cd(OH)₂ Nanosheets Enhancing the Electrocatalytic Activity of CO₂ Reduction to CO