Modified MIL-100(Fe) for enhanced photocatalytic degradation of tetracycline under visible-light irradiation

He, Yonghong; Dong, Wenbo; Li, Xiaopei; Wang, Dongbo; Yang, Qi; Deng, Pin; Huang, Jin

doi:10.1016/j.jcis.2020.04.075

Cited by 120 publications

(35 citation statements)

References 68 publications

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“…Similarly, Fe 4+ ions are also reduced to Fe 3+ ions by releasing electrons, while the hydroxyl groups on the surface of Fe–BiOI-In can translate into hydroxyl radicals ( • OH). Thus, the active species (h*, OH, and O 2 ) can join in the oxidation of TC and finally produce CO 2 , H 2 O, and so forth. − Therefore, the synthesized Fe–BiOI-In has been the potential ability for the photocatalytic degradation of TC.…”

Section: Resultsmentioning

confidence: 99%

Strategic Doping Approach of the Fe–BiOI Microstructure: An Improved Photodegradation Efficiency of Tetracycline

et al. 2021

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The present study describes the strategic doping of Fe metal ions into a BiOI microstructure using ex situ and in situ processes to synthesize a Fe−BiOI microstructure and their effect on photocatalytic degradation of tetracycline (TC). The data suggested that in situ Fe−BiOI (Fe−BiOI-In) has superior performance compared to ex situ Fe−BiOI (Fe−BiOI-Ex) due to the uniform dispersion of Fe within the Fe−BiOI material. Calculated bandgaps ∼1.8, ∼1.5, and 2.4 eV were observed for BiOI (without Fe), Fe−BiOI-In, and Fe−BiOI-Ex, respectively. Interestingly, Fe incorporation within BiOI might decrease the bandgap in Fe−BiOI-In due to the uniform distribution of metal ions, whereas increasing the bandgap in Fe−BiOI-Ex attributed to nonuniform distribution or agglomeration of metal ions. The uniform dispersion of Fe within Fe−BiOI modulates electronic properties as well as increases the exposure of Fe ions with TC, thereby higher degradation efficiency of TC. The in situ Fe−BiOI material shows 67 and 100% degradation of TC at 10 and 1 mg/L, respectively. The TC degradation was also found to be pH-dependent; when increasing the pH value up to 10, 94% degradation was achieved at 10 mg/L within 60 min of solar irradiation. The analysis was also performed over BiOI, which proves that Fe has a profound effect on TC degradation as Fe(II) tends to trigger oxidation−reduction by utilizing the chelate formation tendency of TC. Therefore, the prepared Fe−BiOI-In has the potential ability to degrade pharmaceutical compounds, especially, TC from wastewater.

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Section: Resultsmentioning

confidence: 99%

Strategic Doping Approach of the Fe–BiOI Microstructure: An Improved Photodegradation Efficiency of Tetracycline

et al. 2021

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“…Co 3+ /Co 2+ played a vital role in mediating the separation and transfer of charges via metal-to-metal charge transfer with Zr 4+ /Zr 3+ . Many studies have reported that • O 2 – and h + play a dominant role in the degradation of TC, − while other studies showed that • OH could be more dominant. , Indium sulfide (In 2 S 3 ) as a promising n-type semiconductor with a narrow bandgap (2.0–2.4 eV) has also been integrated into MOFs to achieve more efficient charge separation and degradation of TC. , …”

Section: Mof-catalyzed Photocatalytic Degradation Of Antibioticsmentioning

confidence: 99%

“…Besides TC, SMX, and SMT, photocatalytic degradation of many veterinary antibiotics by MOFs has been studied, including amoxicillin (AMX), , ciprofloxacin (CIP), ,− sodium sulfadiazine (SD), trimethoprim, and norfloxacin, in which a variety of materials and strategies have been exploited to achieve higher performance. The photocatalytic degradation efficiencies of veterinary antibiotics by novel MOFs in some recent studies are summarized in Table S2. ,,,,,,,,,− ,,,,,,− ,− As the most studied antibiotic, the degradation efficiencies of TC by recent MOF composites vary significantly from 22.0 to 96.6%, with the reaction time varying from 30 to 180 min. Given the multiple carbon rings in its structure and relatively complicated degradation pathways, the degradation efficiency of TC might depend on multiple factors such as the interaction between metal nodes and ligands of MOFs and generation of reactive species.…”

Section: Mof-catalyzed Photocatalytic Degradation Of Antibioticsmentioning

confidence: 99%

“…78,256 Indium sulfide (In 2 S 3 ) as a promising n-type semiconductor with a narrow bandgap (2.0−2.4 eV) has also been integrated into MOFs to achieve more efficient charge separation and degradation of TC. 253,254 Attempts have been made on understanding the influence of pH in the degradation of tetracycline (TC). TC exists as TCH 3 + , TCH 2 , TCH − , and TC 2− with pK a values of 3.3, 7.7, and 9.7.…”

Section: Mof-catalyzed Photocatalyticmentioning

confidence: 99%

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Metal Organic Frameworks (MOFs) as Photocatalysts for the Degradation of Agricultural Pollutants in Water

et al. 2021

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Increasing demand for food due to rapid population growth has exerted unprecedented pressure on the global agricultural industry. Agrochemicals are widely used to ensure productivity, leading to the prevalence of legacy and emerging agricultural chemicals in the environment, most of which are toxic and persistent. Metal−organic frameworks (MOFs) as a group of novel photocatalytic materials with ultrahigh porosity and tunability have demonstrated high potential for efficient removal of these recalcitrant pollutants. This critical review aims to present the potential of MOF-catalyzed photodegradation of pesticides and antibiotics. Initially, the capabilities of different MOF-based composites to harvest visible light are compared. Examples include MOFs combined with bismuth oxyhalides (BiOX) and graphite oxide (GO). Mechanisms involved in MOF-induced photocatalytic processes such as electron−hole (e − /h + ) separation, generation of reactive species, and degradation pathways of representative pollutants as well as impacts of water chemistry are illustrated in detailed. Research on applying MOF-catalyzed processes is largely in progress, and many more studies with greater mechanistic evaluation are needed to fully assess the potential of such processes to depollute water.

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“…In 2 S 3 has a narrow band gap of 2.0-2.2 eV and low toxicity, [14][15][16] and exists in three different crystal forms: defect cube, defect spinel and layered structure. [17] However, the rapid recombination of photoelectron-hole pairs leads to low efficiency, which is still a difficult problem to improve the photocatalytic efficiency of In 2 S 3 [18][19] Existing studies show that the photocatalytic efficiency of In 2 S 3 can be improved by modifying the morphology of In 2 S 3 and combining the doping of metal and carbon materials. [6,[20][21][22][23][24] Among them, the construction of composite materials is a promising strategy to improve the photocatalytic performance of In 2 S 3.…”

Section: Introductionmentioning

confidence: 99%

Construction of Three‐Dimensional In‐Zn‐Cd‐S Composite Materials and Their Visible‐Light Catalytic Performance

Gong

et al. 2022

ChemistrySelect

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In this paper, a simple template‐free one‐step hydrothermal method was used to construct three‐dimensional In−Zn−Cd−S composite materials. By changing the ratio of In3+/(Zn2++Cd2+) and controlling the band gap of semiconductor, a novel efficient and stable photocatalyst was designed. In−Zn−Cd−S composite showed good adsorption capacity and photocatalytic activity. When In3+/(Zn2++Cd2+) was equal to 1/5, the photocatalytic activity of the composite was the highest. The degradation rate of RhB could reach 92.6 % within 5 min, and 97.6 % after 15 min. The results of cyclic experiments show that the IZCS‐4 catalyst has good cyclic performance and structural stability. According to the free radical capture experiment, the main effect of IZCS‐4 on the photodegradation of organic pollutants is H+ and ⋅O2−. The enhanced photocatalytic activity of the alloy semiconductor material is mainly because it can effectively separate the photogenerated carriers and successfully inhibit the photocorrosion of In2S3 monomer.

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Modified MIL-100(Fe) for enhanced photocatalytic degradation of tetracycline under visible-light irradiation

Cited by 120 publications

References 68 publications

Strategic Doping Approach of the Fe–BiOI Microstructure: An Improved Photodegradation Efficiency of Tetracycline

Strategic Doping Approach of the Fe–BiOI Microstructure: An Improved Photodegradation Efficiency of Tetracycline

Metal Organic Frameworks (MOFs) as Photocatalysts for the Degradation of Agricultural Pollutants in Water

Construction of Three‐Dimensional In‐Zn‐Cd‐S Composite Materials and Their Visible‐Light Catalytic Performance

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