Effects of water environmental factors on the photocatalytic degradation of sulfamethoxazole by AgI/UiO-66 composite under visible light irradiation

Wang, Chao; Xue, Yao; Wang, Peifang; Ao, Yanhui

doi:10.1016/j.jallcom.2018.03.129

Cited by 81 publications

(25 citation statements)

References 37 publications

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“…In MLCT, the excited electrons in the CB of Bi 2 O 3 can transfer to the LUMO of the ligands, while in LMCT, the excited electrons in the LUMO of the ligands can migrate to the CB of the Ti-clusters. • OH and • O 2 – were the major reactive species in the photocatalytic degradation of SMX by this Ti-BDC/Bi 2 O 3 composite, similar to what was observed for the AgI/UiO-66 and UiO-66-NH 2 -BT@g-C 3 N 4 composites.…”

Section: Mof-catalyzed Photocatalytic Degradation Of Antibioticssupporting

confidence: 76%

“…For example, halide ions, especially Br – , are among the most important • OH scavengers. Cl – could react with • OH and O 2 to form chlorine radical ( • Cl) and chlorine monoxide radical ( • ClO), which are less reactive than • OH and could compromise the catalytic performance of MOFs. ,, When both Cl – and Br – are present, formation of bromine monochloride radical ( • BrCl – ) and dibromine radical ( • Br 2 – ) could occur, which are more selective than • OH. , When both Cl – and Br – are present, formation of bromine monochloride radical ( • BrCl – ) and dibromine radical ( • Br 2 – ) could hinder the degradation process, due to the more selective nature of • BrCl – and • Br 2 – compared to • OH. , Surprisingly, in the UiO-66/AgI composite, the addition of Cl – and SO 4 2– showed little effects on the degradation of sulfamethoxazole . It was suggested that • Cl and dichlorine radical ( • Cl 2 – ) produced by Cl – could also induce the degradation of sulfamethoxazole and that • O 2 – was the main contributing radical instead of • OH.…”

Section: Generation Of Reactive Radical Species In Mof-induced Photoc...mentioning

confidence: 99%

“…In pathway II, the amine group on the benzene ring is oxidized into a nitro group. In the last pathway, the substitute isoxazole ring undergoes a series of hydroxylation reaction and ends up with ring-opening. , …”

Section: Mof-catalyzed Photocatalytic Degradation Of Antibioticsmentioning

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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Section: Mof-catalyzed Photocatalytic Degradation Of Antibioticssupporting

confidence: 76%

Section: Generation Of Reactive Radical Species In Mof-induced Photoc...mentioning

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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“…The effect of sulfates on the photocatalytic activity of TiO 2 /diatomite indicated that the addition of a small amount of sulfate ions promoted the initial phase and, consequently, the stable sulfate had a strong electron affinity, capturing the photogenerated electrons and making the e − /h + pair recombination difficult. Other anions and/or inorganic species have also been observed in the degradation of different pollutants [67,68].…”

Section: Effect Of the Presence Of So 4 2− Ionsmentioning

confidence: 99%

Oxide-Clay Mineral as Photoactive Material for Dye Discoloration

Miranda

Viana²,

Honorio³

et al. 2020

Minerals

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Titanium and zirconium oxides (TiO2 and ZrO2, respectively) were obtained from alkoxides hydrolyses, and then deposited into palygorskite clay mineral (Pal) to obtain new materials for photocatalytic applications. The obtained materials were characterized by structural, morphological, and textural techniques. X-ray diffraction (XRD) results confirmed the characteristic peaks of oxides and clay transmission electron microscopy (TEM) and scanning electron microscopy (SEM) images of the modified palygorskite with both oxides showed that the clay was successfully modified by the proposed method. The increase in the specific surface area of the clay occurred when TiO2 and ZrO2 were deposited on the surface. The photocatalytic activity of these materials was investigated using the Remazol Blue anion dye under UV light. The evaluated systems presented high photocatalytic activity, reaching approximately 98% of dye discoloration under light. Thus, TiO2–Pal and ZrO2–TiO2–Pal are promising clay mineral-based photocatalysts.

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“…The kinetic behavior of the samples for BPA degradation was investigated. The reaction kinetics could be fitted well by the principle of kinetics pseudo first-order reaction [44,45]. The rate constants for BPA degradation by BiOCl, Bi2WO6, BC-1, BC-2, BC-3, and BC-4 with PMS activation were 0.010, 0.017, 0.024, 0.040, 0.102, and 0.044 min −1 , respectively.…”

Section: Photocatalytic Activity Evaluationmentioning

confidence: 77%

Peroxymonosulfate Activation by Bi2WO6/BiOCl Heterojunction Nanocomposites under Visible Light for Bisphenol A Degradation

et al. 2021

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The combination of peroxymonosulfate (PMS) activation and photocatalysis has proven to be effective for organic contaminants treatment. However, the construction of an efficient catalytic material is an important challenge. Herein, novel Bi2WO6/BiOCl heterojunction nanocomposites were successfully designed and fabricated using a facile and effective strategy for bisphenol A (BPA) photodegradation with PMS activation. The well-designed heterojunction with improvement of the contact area and interface microstructure was obtained through in situ growth of the Bi2WO6 on the surface of BiOCl. The Bi2WO6/BiOCl nanocomposites exhibit excellent catalytic performance in PMS activation for BPA degradation under visible light irradiation. A possible photocatalytic reaction mechanism was systematically revealed. The excellent catalytic performance is mainly attributed to the strong interaction between Bi2WO6 and BiOCl, resulting in an enhanced photoabsorption and a more efficient interfacial charge separation and transfer. This paper provides a novel strategy to design efficient catalytic materials for organic contaminants remediation with PMS activation.

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Effects of water environmental factors on the photocatalytic degradation of sulfamethoxazole by AgI/UiO-66 composite under visible light irradiation

Cited by 81 publications

References 37 publications

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

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

Oxide-Clay Mineral as Photoactive Material for Dye Discoloration

Peroxymonosulfate Activation by Bi2WO6/BiOCl Heterojunction Nanocomposites under Visible Light for Bisphenol A Degradation

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