Novel-structured mesoporous SiO2 and ZrO2–GO nanocomposite for photocatalytic degradation of toxic phenolic derivatives under the visible light irradiation

Zhao, Jingjing; Otgonbayar, Zambaga; Fatema, Kamrun Nahar; Sagadevan, Suresh; Oh, Won‐Chun

doi:10.1016/j.surfin.2020.100613

Cited by 15 publications

(5 citation statements)

References 26 publications

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“…As shown in Figure a,b, bare ZrO 2 can be coded for tetragonal (JCPDS card 79-1769); its fundamental diffraction patterns at 24.2, 28.2, 31.5, 34.1, 35.3, 40.7, 50.1, and 55.3° can be assigned to (011), (111), (111), (002), (211), (202), (013), and (131) planes, respectively. The firm and spire diffraction peaks of ZrO 2 confirm the high purity and crystallinity of the sample. , The primary peaks of bare g-C 3 N 4 are located at 13.1 and 27.4°, respectively, and correspond to the crystal planes (100) and (002) . It has been observed that there are no distinctive peaks of g-C 3 N 4 and MoS 2 in the ZrO 2 @MoS 2 /g-C 3 N 4 nanocomposite (Figure a,b) even though these peaks can be seen in the transmission electron microscopy (TEM) pictures.…”

Section: Resultsmentioning

confidence: 72%

“…The firm and spire diffraction peaks of ZrO 2 confirm the high purity and crystallinity of the sample. 22,23 The primary peaks of bare g-C 3 N 4 are located at 13.1 and 27.4°, respectively, and correspond to the crystal planes (100) and (002). 24 It has been observed that there are no distinctive peaks of g-C 3 N 4 and MoS 2 in the ZrO 2 @MoS 2 / g-C 3 N 4 nanocomposite (Figure 5a,b) even though these peaks can be seen in the transmission electron microscopy (TEM) pictures.…”

Section: Resultsmentioning

confidence: 99%

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Promoting Spatial Charge Transfer of ZrO₂ Nanoparticles: Embedded on Layered MoS₂/g-C₃N₄ Nanocomposites for Visible-Light-Induced Photocatalytic Removal of Tetracycline

et al. 2022

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Photocatalytic degradation is a sustainable technique for reducing the environmental hazards created by the overuse of antibiotics in the food and pharmaceutical industries. Herein, a layer of MoS2/g-C3N4 nanocomposite is introduced to zirconium oxide (ZrO2) nanoparticles to form a “particle-embedded-layered” structure. Thus, a narrow band gap (2.8 eV) starts developing, deliberated as a core photodegradation component. Under optimization, a high photocatalytic activity of 20 mg/L TC at pH 3 with ZrO2@MoS2/g-C3N4 nanocomposite was achieved with 94.8% photocatalytic degradation in 90 min. A photocatalytic degradation rate constant of 0.0230 min–1 is determined, which is 2.3 times greater than the rate constant for bare ZrO2 NPs. The superior photocatalytic activity of ZrO2@MoS2/g-C3N4 is due to the dual charge-transfer channel between the MoS2/g-C3N4 and ZrO2 nanoparticles, which promotes the formation of photogenerated e–/h+ pairs. Charge recombination produces many free electron–hole pairs, which aid photocatalyst reactions by producing superoxide and hydroxyl radicals via electron–hole pair generation. The possible mechanistic routes for TC were investigated in-depth, as pointed out by the liquid chromatography–mass spectrometry (LC–MS) investigation. Overall, this work shows that photocatalysis is a feasible sorbent approach for environmental antibiotic wastewater treatment.

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Section: Resultsmentioning

confidence: 72%

Section: Resultsmentioning

confidence: 99%

Promoting Spatial Charge Transfer of ZrO₂ Nanoparticles: Embedded on Layered MoS₂/g-C₃N₄ Nanocomposites for Visible-Light-Induced Photocatalytic Removal of Tetracycline

et al. 2022

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“…Moreover, the adsorption efficiency decreases significantly as the amount of adsorbed gas increases with time [14,15]. Silica-based composites have been used in many aspects of photocatalysis [16][17][18]. Therefore, we chose mesoporous silica as the carrier for ethylene adsorption.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic degradation of ethylene by mesoporous nano silica loaded chlorin e6

Jia

Jin

Zhang

et al. 2023

Mater. Res. Express

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Green foods are usually harvested and stored before ripening, but excessive ethylene generated during storage can lead to the loss of vegetables and fruits. Photocatalytic oxidation provides a promising method to remove ethylene and extend the shelf life of green foods. In this study, a mesoporous nanosilica-loaded Ce6 composite nanomaterial (Ce6@SiO2) was designed and synthesized to adsorb ethylene into its pores and then degrade it under visible light illumination. The photosensitizer Ce6 in the mesopore produced large amounts of reactive oxygen species that degraded ethylene. The specific surface area was greatly increased by coating the material on the surface of a sodium alginate (SA) hydrogel membrane. This improved its degradation efficiency and facilitated the adsorption and degradation of ethylene during fruit storage. The ethylene removal capacity was studied by measuring the ethylene concentration and increases in the humidity in Tedlar gas bags. Practical applications were tested by observing color changes and surface decay of tomatoes stored with and without SA/Ce6@SiO2. The results showed the system may be used in practical commercial preservation systems.

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“…Several hazardous compounds have been released into the environment as a result of industrial wastes and rising food consumption. Phenolic compounds, such as chlorophenols, are a type of persistent organic pollutants that are predominantly discharged into the environment by pesticides, detergents, dyes, herbicides, and the plastics industry [1–4] . 2,4,5‐trichlorophenol (TCP) is a chlorophenol with a significant killing and inhibiting impact on microorganism development; [3,5–7] and long‐term exposure has been reported to be cytotoxic, mutagenic and carcinogenic in humans.…”

Section: Introductionmentioning

confidence: 99%

“…Single metal semiconductors such as ZnO, WO 3 , TiO 2 , g ‐CN@CuO, SiO 2 , and ZrO 2 −GO are some of the most commonly utilized heterogeneous catalysts for phenol‐containing wastewater treatment [1,2,16,17] . The usage of single‐metal semiconductors has been stated to have varying degrees of success by the authors.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Toxic Phenolic Compound and Bacterial Inactivation by Ternary Li doped Zn_0.5Ni_0.5Fe₂O₄

2022

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Conventional methods are inefficient to treat water contaminated with persistent organic contaminants. To decontaminate bacteria and 2,4,5‐trichlorophenol (TCP) contaminated water, a heterogeneous photocatalysis‐based advanced oxidation process was applied in this study. A Li‐doped ternary Zn0.5Ni0.5Fe2O4 (ZNF) photocatalyst (Li/ZNF) was synthesized via a facile co‐precipitation technique and characterized. The Li/ZNF has a sufficient specific surface area (69.8 m2.g−1), and an appropriate bandgap of 2.89 eV. Under optimal conditions, 10 mg of Li/ZNF photocatalyst degraded 80 % of 50 mg L−1 TCP in 6 h at pH 3 in the presence of 4 mM H2O2. After use, the Li/ZNF photocatalyst was magnetically separated and reused numerous times, with an efficiency of 66 % after the fifth reuse cycle. In the antibacterial time‐kill assay, 15 and 25 mg of Li/ZNF inhibited 1×107 CFU.mL−1 of S. Aureus and E. coli bacteria after 60 min of UV exposure, respectively.

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Novel-structured mesoporous SiO2 and ZrO2–GO nanocomposite for photocatalytic degradation of toxic phenolic derivatives under the visible light irradiation

Cited by 15 publications

References 26 publications

Promoting Spatial Charge Transfer of ZrO₂ Nanoparticles: Embedded on Layered MoS₂/g-C₃N₄ Nanocomposites for Visible-Light-Induced Photocatalytic Removal of Tetracycline

Promoting Spatial Charge Transfer of ZrO₂ Nanoparticles: Embedded on Layered MoS₂/g-C₃N₄ Nanocomposites for Visible-Light-Induced Photocatalytic Removal of Tetracycline

Photocatalytic degradation of ethylene by mesoporous nano silica loaded chlorin e6

Photocatalytic Degradation of Toxic Phenolic Compound and Bacterial Inactivation by Ternary Li doped Zn_0.5Ni_0.5Fe₂O₄

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Novel-structured mesoporous SiO2 and ZrO2–GO nanocomposite for photocatalytic degradation of toxic phenolic derivatives under the visible light irradiation

Cited by 15 publications

References 26 publications

Promoting Spatial Charge Transfer of ZrO2 Nanoparticles: Embedded on Layered MoS2/g-C3N4 Nanocomposites for Visible-Light-Induced Photocatalytic Removal of Tetracycline

Promoting Spatial Charge Transfer of ZrO2 Nanoparticles: Embedded on Layered MoS2/g-C3N4 Nanocomposites for Visible-Light-Induced Photocatalytic Removal of Tetracycline

Photocatalytic degradation of ethylene by mesoporous nano silica loaded chlorin e6

Photocatalytic Degradation of Toxic Phenolic Compound and Bacterial Inactivation by Ternary Li doped Zn0.5Ni0.5Fe2O4

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Promoting Spatial Charge Transfer of ZrO₂ Nanoparticles: Embedded on Layered MoS₂/g-C₃N₄ Nanocomposites for Visible-Light-Induced Photocatalytic Removal of Tetracycline

Promoting Spatial Charge Transfer of ZrO₂ Nanoparticles: Embedded on Layered MoS₂/g-C₃N₄ Nanocomposites for Visible-Light-Induced Photocatalytic Removal of Tetracycline

Photocatalytic Degradation of Toxic Phenolic Compound and Bacterial Inactivation by Ternary Li doped Zn_0.5Ni_0.5Fe₂O₄