Interactions of natural organic matter on the surface of PVP-capped silver nanoparticle under different aqueous environment

Wang, Xiangrui; Fan, Wenhong; Dong, Zhaomin; Liang, Dingyuan; Zhou, Tingting

doi:10.1016/j.watres.2018.03.048

Cited by 34 publications

(18 citation statements)

References 65 publications

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“…The reducibility of HA could reduce silver ions to silver monomers. 44 In addition, silver ions might form complexes with HA, 45,46 resulting in a reduction of antibacterial effectiveness; (4) Jeen-Kuan Chen reported that chitosan had potent adsorption capacity to HA. 47 In this experiment, PQAS was obtained by modifying a quaternary ammonium salt with the chitosan polymer as a skeleton.…”

Section: Resultsmentioning

confidence: 99%

Antibacterial performance of polymer quaternary ammonium salt–capped silver nanoparticles onBacillus subtilisin water

Wang

Sui

et al. 2019

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

Antibacterial performance of polymer quaternary ammonium salt–capped silver nanoparticles onBacillus subtilisin water

Wang

Sui

et al. 2019

RSC Adv.

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“…The plates were incubated at 310 K for 24 h. Then the numbers of bacterial colonies (CFU) were counted. The counts were used to calculate the surviving number of bacteria [27]. Growth inhibition rate was calculated according to the following equation: GIR = {(CFU/ml of control medium CFU/ml of silver nanoparticles solution treated medium)/(CFU/Ml of control medium)}·100.…”

Section: Antimicrobial Activity Studiesmentioning

confidence: 99%

The Plasma-Induced Formation of PVP-Coated Silver Nanoparticles and Usage in Water Purification

Скіба¹,

Пивоваров²,

Vorobyova³

2020

ChChT

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1 The contact non-equilibrium low-temperature plasma technique is used to synthesize silver nanoparticles (AgNPs) employing polyvinyl pyrrolidone (PVP) as a capping agent. Influences of PVP concentration on the formation efficiency of silver nanoparticle, their average size and stability have been studied. The synthesized silver nanoparticles had a significant antibacterial activity against two strains of Gram bacteria. Silver nanoparticles (AgNPs)-alginate composite beads with different PVP concentration were synthesized as materials for water purification.Анотація. За допомогою контактної нерівноважної низькотемпературної плазми одержані наночастинки срібла (AgНЧ) із застосуванням полівінілпіролідону ( ПВП) як стабілізуючого агенту. Вивчено вплив концентрації ПВП на ефективність формування наночастинок срібла, їх середній розмір та стабільність. Встановлено, що одержані наночастинки срібла проявляють антибактеріальну активність проти двох штамів грам-бактерій. Одержано композитні гранули (AgНЧальгінат) з різною концентрацією ПВП для очищення води.Ключові слова: наночастинки срібла, плазма, полівінілпіролідон, композитний матеріал, антибактеріальний.

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“…The formation of TEPs from these alginate blocks would definitely affect their filtration behaviors in membrane filtration process. The intermolecular interactions of foulants was essential in understanding fouling mechanism [29,30] and more efforts should be devoted into exploring the complex crosslinking of various foulants in water environments.…”

Section: The Tep Formation From Mg- Mm-and Gg-blocksmentioning

confidence: 99%

Insights into the Fouling Propensities of Natural Derived Alginate Blocks during the Microfiltration Process

et al. 2019

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Membrane technology has been one of the most promising techniques to solve the water problem in future. Unfortunately, it suffers from the fouling problem which is ubiquitous in membrane systems. The origin of the bewilderments of the fouling problem lies in the lack of deep understanding. Recent studies have pointed out that the molecular structure of foulant affects its fouling propensity which has been ignored in the past. In this study, the filtration behaviors of alginate blocks derived from the same source were comprehensively explored. Alginate blocks share the same chemical composition but differ from each other in molecular structure. The alginate was first extracted from natural seaweed using calcium precipitation and ion-exchange methods. Extracted alginate was further fractionized into MG-, MM- and GG-blocks and the characteristics of the three blocks were examined by Fourier transform infrared spectroscopy (FTIR) and field emission scanning electron microscopy (FESEM) observations, and transparent exopolymer particles’ (TEPs) measurements. Results showed that MG-, MM- and GG-blocks had the same functional groups, but they showed different intermolecular interactions. TEP formation from MG-, MM- and GG-blocks revealed that the molecule crosslinking of them decreased in the order of MM-blocks > GG-blocks > MG-blocks. It was further found from microfiltration tests that these alginate blocks had completely different fouling propensities which can be explained by the TEP formation. TEPs would accumulate on membrane surfaces and worked as a pre-filter to avoid serious pore blocking of membrane. That all suggested that the membrane fouling was closely related to the molecular structure of foulant. It is expected that this study can provide useful insights into the fouling propensities of different types of polysaccharides during filtration processes.

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Interactions of natural organic matter on the surface of PVP-capped silver nanoparticle under different aqueous environment

Cited by 34 publications

References 65 publications

Antibacterial performance of polymer quaternary ammonium salt–capped silver nanoparticles onBacillus subtilisin water

Antibacterial performance of polymer quaternary ammonium salt–capped silver nanoparticles onBacillus subtilisin water

The Plasma-Induced Formation of PVP-Coated Silver Nanoparticles and Usage in Water Purification

Insights into the Fouling Propensities of Natural Derived Alginate Blocks during the Microfiltration Process

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