Inactivation of harmful cyanobacteria by Ag/AgCl@ZIF-8 coating under visible light: Efficiency and its mechanisms

Fan, Gongduan; You, Yifan; Wang, Bo; Wu, Shimin; Zhi, Zhang; Zheng, Xiaomei; Bao, Minchen; Zhan, Jiajun

doi:10.1016/j.apcatb.2019.117866

Cited by 71 publications

(16 citation statements)

References 52 publications

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“…In this case, Ag was replaced by Ag-AgCl. Many Ag-AgCl assisted photocatalysts such as Ag-AgCl@LaFeO 3 , Ag-AgCl@ZIF-8, and Ag-AgCl/CeO 2 have been proven to exhibit high stability and enhanced photocatalytic activity because of the positive synergistic effect between Ag and Ag-halides semiconductor. It was found that Ag-AgCl combined with α-Fe 2 O 3 could show enhanced photocatalytic activities. , On the basis of the synergistic effect of Ag and good structural controllability of α-Fe 2 O 3 , Ag-AgCl/α-Fe 2 O 3 might be a suitable composite for the prevention and control A. flavus spores in air.…”

Section: Introductionmentioning

confidence: 99%

“…27 In this case, Ag was replaced by Ag-AgCl. Many Ag-AgCl assisted photocatalysts such as Ag-AgCl@LaFeO 3 , 28 Ag-AgCl@ZIF-8, 29 and Ag-AgCl/CeO 2 30 have been proven to exhibit high stability and enhanced photocatalytic activity because of the positive synergistic effect between Ag and Ag-halides semiconductor. It was found that Ag-AgCl combined with α-Fe 2 O 3 could show enhanced photocatalytic activities.…”

Section: Introductionmentioning

confidence: 99%

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Efficient Prevention of Aspergillus flavus Spores Spread in Air Using Plasmonic Ag-AgCl/α-Fe₂O₃ under Visible Light Irradiation

Mao

Wei

et al. 2022

ACS Appl. Mater. Interfaces

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Aspergillus flavus is a kind of widespread fungi that can produce carcinogenic, teratogenic, and mutagenic secondary metabolites known as aflatoxins. Aspergillus flavus mainly spread through the means of fungal spores in air, thus preventing the spores spread is an effective strategy to control aflatoxins contamination from source. Herein, a rapid and efficient control way to prevent the spread of Aspergillus flavus spores in air was demonstrated. Ag-AgCl nanoparticles were combined with tetrahedral α-Fe2O3 to form plasmonic composites that presented 93.65 ± 1.53% prevention rate of Aspergillus flavus spores under 50 min visible light irradiation. The efficient activity was attributed to the synergy effect of Ag including intrinsic disinfection, electron sink, and localized surface plasmon resonance effect, which were proven by photoelectric characterization, density functional theory, and finite difference time domain methods. The calculated work functions of α-Fe2O3, Ag, and AgCl were 3.71, 4.52, and 5.38 eV, respectively, which could accelerate photoinduced carrier transfer through Ag during photoreaction. Moreover, it was found that the intrinsic disinfection of Ag and hydroxyl radical from photocatalytic reaction were the main factors to the prevention of Aspergillus flavus spores, which resulted in the destruction of spore structure and the leakage of intracellular protein with 62.15 ± 2.63 μg mL–1. Most important, it was proven that the composites also showed high activity (90.52 ± 1.26%) to prevent Aspergillus flavus spore spread in the storage process of peanuts. These findings not only provided useful information for an efficient and potential strategy to prevent Aspergillus flavus contamination but also could be as a reference in toxic fungi control.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Efficient Prevention of Aspergillus flavus Spores Spread in Air Using Plasmonic Ag-AgCl/α-Fe₂O₃ under Visible Light Irradiation

Mao

Wei

et al. 2022

ACS Appl. Mater. Interfaces

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“…To determine the presence of a photocatalytic–photothermal synergetic effect, photocatalyst coating without photothermal conversion abilities (AWC/silica–sol/MS and AWC/SDS/MS) was synthesized based on our previous studies. , The results in Figure S7b,c show that the AWC/PDA/MS with photocatalytic–photothermal performance achieved the best removal of TMP. In the dark at 318 K condition, most of the removal efficiency was attributed to adsorption.…”

Section: Resultsmentioning

confidence: 99%

Mussel-Inspired Immobilization of Photocatalysts with Synergistic Photocatalytic–Photothermal Performance for Water Remediation

Fan

Ning

et al. 2021

ACS Appl. Mater. Interfaces

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The serious problem of pharmaceutical and personal care product pollution places great pressure on aquatic environments and human health. Herein, a novel coating photocatalyst was synthesized by adhering Ag-AgCl/WO3/g-C3N4 (AWC) nanoparticles on a polydopamine (PDA)-modified melamine sponge (MS) through a facile layer-by-layer assembly method to degrade trimethoprim (TMP). The formed PDA coating was used for the anchoring of nanoparticles, photothermal conversion, and hydrophilic modification. TMP (99.9%; 4 mg/L) was removed in 90 min by the photocatalyst coating (AWC/PDA/MS) under visible light via a synergistic photocatalytic–photothermal performance route. The stability and reusability of the AWC/PDA/MS have been proved by cyclic experiments, in which the removal efficiency of TMP was still more than 90% after five consecutive cycles with a very little mass loss. Quantitative structure–activity relationship analysis revealed that the ecotoxicities of the generated intermediates were lower than those of TMP. Furthermore, the solution matrix effects on the photocatalytic removal efficiency were investigated, and the results revealed that the AWC/PDA/MS still maintained excellent photocatalytic degradation efficiency in several actual water and simulated water matrices. This work develops recyclable photocatalysts for the potential application in the field of water remediation.

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“…Firstly, 1 mL of Cu 2 O/SiO 2 stock solution (1000 mg/L) was added to 100 mL of deionized water to obtain a 10 mg/L Cu 2 O/SiO 2 solution. Subsequently, the samples were filtered (0.22 µm membrane filter) and the Cu 2+ concentration was then measured while using an inductively coupled plasma spectrometer (PerkinElmer, Optima 8000, USA) to determine the concentration of Cu 2+ [35]. The relative content of chlorophyll a was calculated by Equation 3.…”

Section: The Effect Of Cu 2+mentioning

confidence: 99%

Inhibitory Effects of Cu2O/SiO2 on the Growth of Microcystis aeruginosa and Its Mechanism

et al. 2019

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In this study, a novel nanomaterial Cu2O/SiO2 was synthesized based on nano-SiO2, and the inhibitory effects of different concentrations of Cu2O/SiO2 on the growth of Microcystis aeruginosa (M. aeruginosa) were studied. At the same time, the mechanism of Cu2O/SiO2 inhibiting the growth of M. aeruginosa was discussed from the aspects of Cu2+ release, chlorophyll a destruction, oxidative damage, total protein, and the phycobiliprotein of algae cells. The results showed that low doses of Cu2O/SiO2 could promote the growth of M. aeruginosa. When the concentration of Cu2O/SiO2 reached 10 mg/L, it exhibited the best inhibitory effect on M. aeruginosa, and the relative inhibition rate reached 294% at 120 h. In terms of the algae inhibition mechanism, Cu2O/SiO2 will release Cu2+ in the solution and induce metal toxicity to algae cells. At the same time, M. aeruginosa might suffer oxidative damage by the free radicals, such as hydroxyl radicals released from Cu2O/SiO2, affecting the physiological characteristics of algae cells. Moreover, after the addition of Cu2O/SiO2, a decrease in the content of chlorophyll a, total soluble protein, and phycobiliprotein was found, which eventually led to the death of M. aeruginosa. Therefore, Cu2O/SiO2 can be used as an algaecide inhibitor for controlling harmful cyanobacteria blooms.

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Inactivation of harmful cyanobacteria by Ag/AgCl@ZIF-8 coating under visible light: Efficiency and its mechanisms

Cited by 71 publications

References 52 publications

Efficient Prevention of Aspergillus flavus Spores Spread in Air Using Plasmonic Ag-AgCl/α-Fe₂O₃ under Visible Light Irradiation

Efficient Prevention of Aspergillus flavus Spores Spread in Air Using Plasmonic Ag-AgCl/α-Fe₂O₃ under Visible Light Irradiation

Mussel-Inspired Immobilization of Photocatalysts with Synergistic Photocatalytic–Photothermal Performance for Water Remediation

Inhibitory Effects of Cu2O/SiO2 on the Growth of Microcystis aeruginosa and Its Mechanism

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Inactivation of harmful cyanobacteria by Ag/AgCl@ZIF-8 coating under visible light: Efficiency and its mechanisms

Cited by 71 publications

References 52 publications

Efficient Prevention of Aspergillus flavus Spores Spread in Air Using Plasmonic Ag-AgCl/α-Fe2O3 under Visible Light Irradiation

Efficient Prevention of Aspergillus flavus Spores Spread in Air Using Plasmonic Ag-AgCl/α-Fe2O3 under Visible Light Irradiation

Mussel-Inspired Immobilization of Photocatalysts with Synergistic Photocatalytic–Photothermal Performance for Water Remediation

Inhibitory Effects of Cu2O/SiO2 on the Growth of Microcystis aeruginosa and Its Mechanism

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Efficient Prevention of Aspergillus flavus Spores Spread in Air Using Plasmonic Ag-AgCl/α-Fe₂O₃ under Visible Light Irradiation

Efficient Prevention of Aspergillus flavus Spores Spread in Air Using Plasmonic Ag-AgCl/α-Fe₂O₃ under Visible Light Irradiation