Ultrahigh-efficiency antibacterial and adsorption performance induced by copper-substituted polyoxomolybdate-decorated graphene oxide nanocomposites

Xing, Cuili; Chang, Jiangnan; Ma, Min; Ma, Pengtao; Sun, Lin; Li, Mingxue

doi:10.1016/j.jcis.2021.12.175

Cited by 34 publications

(13 citation statements)

References 69 publications

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“…[2,3] Among all kinds of pollutants, especially dyes, antibiotics, and bacteria are remarkably harmful. [4] Dyes and antibiotics are anthropogenic chemical pollutants contained in industrial, municipal, and hospital wastewater: [5][6][7][8] while most of the dyes are genotoxic, cytotoxic, or carcinogenic, [9][10][11] antibiotics are conducive to antibiotic-resistant bacteria. [12] On the other hand, bacteria are common pollutants in wastewater treatment plants [13][14][15] and can cause several diseases, including diarrhea and gastrointestinal infections.…”

Section: Introductionmentioning

confidence: 99%

Reusable and Antibacterial Polymer‐Based Nanocomposites for the Adsorption of Dyes and the Visible‐Light‐Driven Photocatalytic Degradation of Antibiotics

et al. 2022

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Adsorption and advanced oxidation processes, especially photocatalysis, are amongst the most common water treatment methodologies. Unfortunately, using each of these techniques independently does not fully eliminate the pollutants of diverse nature, which are present in wastewater. Here, an avenue for multifunctional materials for water treatment is opened by reporting for the first time the preparation, characterization, and study of the properties of a novel multifunctional nanocomposite with both adsorption and visible‐light‐driven photocatalysis abilities. These multifunctional nanocomposites, namely iron (II, III) oxide/poly(N‐isopropylacrylamide‐co‐methacrylic acid)/silver‐titanium dioxide (Fe3O4/P(NIPAM‐co‐MAA)/Ag‐TiO2), are prepared by combining magnetic polymeric microspheres (Fe3O4/P(NIPAM‐co‐MAA)) with silver‐decorated titanium dioxide nanoparticles (Ag‐TiO2 NPs). Cationic dyes, such as basic fuchsin (BF), can be adsorbed by the nanocomposites thanks to the carboxylic groups of Fe3O4/P(NIPAM‐co‐MAA) microspheres. Concomitantly, the presence of Ag‐TiO2 NPs endows the system with the visible‐light‐driven photocatalytic degradation ability toward antibiotics such as ciprofloxacin (CIP) and norfloxacin (NFX). Furthermore, the proposed nanocomposites show antibacterial activity toward Escherichia coli (E. coli), thanks to the presence of silver nanoparticles (Ag NPs). Due to the superparamagnetic properties of iron (II, III) oxide nanoparticles (Fe3O4 NPs), the nanocomposites can be also recycled and reused, after the cleaning process, by using an external magnetic field.

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Section: Introductionmentioning

confidence: 99%

Reusable and Antibacterial Polymer‐Based Nanocomposites for the Adsorption of Dyes and the Visible‐Light‐Driven Photocatalytic Degradation of Antibiotics

et al. 2022

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“…Therefore, the index of the reactive oxygen species (ROS) content was determined by the production of blue-violet formaldehyde [ 50 , 51 , 52 ]. According to the previous literature, a high ROS content can lead to oxidative stress in bacteria cells [ 6 , 43 ], resulting in disruption of the bacterial cell membrane, intracellular substances, and so on. 1 induced an obviously higher level of ROS production than the control group ( Figure 9 B).…”

Section: Resultsmentioning

confidence: 99%

“…Meanwhile, the widespread use of antibiotics not only leads to an increase in bacterial resistance but may also result in the emergence of super bacteria, thereby posing a threat to global public safety and the ecological environment [ 4 , 5 ]. For the last few years, a tremendous amount of effort has been devoted to the design of antimicrobial materials [ 6 , 7 , 8 , 9 ]. At the same time, significant amounts of co-products such as various organic dyes have been released into water due to the rapid development of the dyeing and printing industry, causing serious industrial wastewater contamination globally.…”

Section: Introductionmentioning

confidence: 99%

A Nickel-Containing Polyoxomolybdate as an Efficient Antibacterial Agent for Water Treatment

Chang

et al. 2022

IJMS

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In view of the water pollution issues caused by pathogenic microorganisms and harmful organic contaminants, nontoxic, environmentally friendly, and efficient antimicrobial agents are urgently required. Herein, a nickel-based Keggin polyoxomolybdate [Ni(L)(HL)]2H[PMo12O40] 4H2O (1, HL = 2-acetylpyrazine thiosemicarbazone) was prepared via a facile hydrothermal method and successfully characterized. Compound 1 exhibited high stability in a wide range of pH values from 4 to 10. 1 demonstrated significant antibacterial activity, with minimum inhibitory concentration (MIC) values in the range of 0.0019–0.2400 µg/mL against four types of bacteria, including Staphylococcus aureus (S. aureus), Bacillus subtilis (B. subtilis), Escherichia coli (E. coli), and Agrobacterium tumefaciens (A. tumefaciens). Further time-kill studies indicated that 1 killed almost all (99.9%) of E. coli and S. aureus. Meanwhile, the possible antibacterial mechanism was explored, and the results indicate that the antibacterial properties of 1 originate from the synergistic effect between [Ni(L)(HL)]+ and [PMo12O40]3−. In addition, 1 presented effective adsorption of basic fuchsin (BF) dyes. The kinetic data fitted a pseudo-second-order kinetic model well, and the maximum adsorption efficiency for the BF dyes (29.81 mg/g) was determined by the data fit of the Freundlich isotherm model. The results show that BF adsorption was dominated by both chemical adsorption and multilayer adsorption. This work provides evidence that 1 has potential to effectively remove dyes and pathogenic bacteria from wastewater.

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“…16 Chemical reduction, biological reduction, electrochemical reduction, and photocatalytic reduction are the most common reduction methods available to overcome this challenge. 10,17,18 Numerous materials, including semiconductors (TiO 2 , ZnO, Fe 2 O 3 , etc. ) and metal–organic frameworks (MOF-808, UiO-66, MIL-125, etc. )…”

Section: Introductionmentioning

confidence: 99%

Exploring novel heterojunctions based on the cerium metal–organic framework family and CAU-1, as dissimilar structures, for the sake of photocatalytic activity enhancement

Goudarzi

Safarifard

2022

RSC Adv.

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Ultrahigh-efficiency antibacterial and adsorption performance induced by copper-substituted polyoxomolybdate-decorated graphene oxide nanocomposites

Cited by 34 publications

References 69 publications

Reusable and Antibacterial Polymer‐Based Nanocomposites for the Adsorption of Dyes and the Visible‐Light‐Driven Photocatalytic Degradation of Antibiotics

Reusable and Antibacterial Polymer‐Based Nanocomposites for the Adsorption of Dyes and the Visible‐Light‐Driven Photocatalytic Degradation of Antibiotics

A Nickel-Containing Polyoxomolybdate as an Efficient Antibacterial Agent for Water Treatment

Exploring novel heterojunctions based on the cerium metal–organic framework family and CAU-1, as dissimilar structures, for the sake of photocatalytic activity enhancement

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