Synergistic Antibacterial Brilliant Blue/Reduced Graphene Oxide/Quaternary Phosphonium Salt Composite with Excellent Water Solubility and Specific Targeting Capability

Cai, Xiang; Tan, Shaozao; Lin, Minsong; Xie, Anjian; Mai, Wenjie; Zhang, Xiuju; Lin, Zhidan; Wu, Ting; Liu, Yingliang

doi:10.1021/la201499s

Cited by 141 publications

(113 citation statements)

References 41 publications

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“…3a. The formation of this unique structure might be caused by the intermolecular forces including π-π conjugation and hydrophobicity between the rGO sheets [33] . The SEM image in Fig.…”

Section: The 3d Network Gel Structure Of Tio2-graphene Hydrogelmentioning

confidence: 99%

Removal of Cr(VI) by 3D TiO 2 -graphene hydrogel via adsorption enriched with photocatalytic reduction

Cui

Liu

et al. 2016

Applied Catalysis B: Environmental

349

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“…3a. The formation of this unique structure might be caused by the intermolecular forces including π-π conjugation and hydrophobicity between the rGO sheets [33] . The SEM image in Fig.…”

Section: The 3d Network Gel Structure Of Tio2-graphene Hydrogelmentioning

confidence: 99%

Removal of Cr(VI) by 3D TiO 2 -graphene hydrogel via adsorption enriched with photocatalytic reduction

Cui

Liu

et al. 2016

Applied Catalysis B: Environmental

349

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“…Some classes of such materials that have been widely explored include antimicrobial peptides, 16 quaternary ammonium polymers [17][18][19][20] and phosphonium salts. 21 For example, Tiller et al 17 covalently attached poly(4-vinyl-N-alkylpyridinium bromide) to glass slides by copolymerizing acrylated surface with 4-vinylpyridine and N-alkylating with alkyl bromide. The glass surfaces modified with N-hexylated poly(4-vinylpyridine) killed at least 94% of sprayed S. aureus, E. coli and P. aeruginosa upon contact.…”

Section: Introductionmentioning

confidence: 99%

Polyurethane-coated silica particles with broad-spectrum antibacterial properties

Sardón

Chan

et al. 2015

Polym. Chem.

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Antimicrobial polymer-coated silica particles were synthesized using a "grafting to" approach. A number of polyurethanes (PU) and poly(ethylene glycol)-containing polyurethanes (PU-PEG) with and without free isocyanate end groups were synthesized by metal-free organocatalytic polymerization of isophorone diisocyanate and N-methyldiethanolamine in the absence or presence of PEG diol using 1,8-diazabicyclo-[5.4.0]undec-7-ene as the catalyst, followed by covalent grafting onto primary amine, propyl chloride or benzyl chloride-functionalized silica particles via both surface-to-end-group ( primary amine to isocyanate) and surface-to-backbone ( propyl chloride or benzyl chloride to tertiary amine in PU and PU-PEG backbones, which generated quaternary ammoniums) attachment modes, resulting in various structures of the polymer-grafted surface. The free tertiary amine groups in the polymer coatings were quaternized using benzyl bromide or methyl iodide to impart antibacterial function. The samples were characterized by X-ray photoelectron spectroscopy (XPS), while their antibacterial efficacies and killing kinetics against Gram-positive S. aureus and Gram-negative E. coli were investigated. XPS spectra showed that the attachment mode on different types of surface-functionalized silica particles resulted in various degrees of polymer conjugation and subsequently led to varying antibacterial efficacies. The surface-to-end-group attachment mode after post-quaternization, in particular, produced PU-PEG-coated silica particles with excellent antibacterial potency against S. aureus and E. coli at a low particle concentration of 10 and 40 mg mL −1 , respectively. By using the same batch of particles in repeated applications, it was found that the antibacterial effectiveness was maintained, and the surface-grafted polymer was stable. Overall, these polymer-coated silica particles have good potential for practical antibacterial applications.

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“…An example of a new carbonaceous material is graphene, whose atoms are arranged in a 2D honeycomb structure [20]. As literature results show, graphene has a high adsorption capacity for removal of aqueous pollutants [21][22][23][24][25].In the present study, the potential application of graphene for 4-chloro-2-nitrophenol (4C2NP) adsorption Pol. J. Environ.…”

mentioning

confidence: 81%

Decontamination of 4-Chloro-2-Nitrophenol from Aqueous Solution by Graphene Adsorption: Equilibrium, Kinetic, and Thermodynamic Studies

Mehrizad¹,

Gharbani²

2014

Pol. J. Environ. Stud.

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Phenol and its compounds are one of the major materials commonly used in the petrochemical, coking, coal refining, chemical, and pharmaceutical industries [1,2]. The harmful effects due to the presence of phenols in industrial wastewaters have been confirmed [3,4]. Thus, development of suitable methods for the decontamination of phenols is necessary. Research has studied the removal of phenol from aqueous solutions, including advanced oxidation processes [5,6], biological degradation [7,8], ozonation [9,10], adsorption [11][12][13][14] [19] have been tested for adsorption of phenol and its compounds from aqueous solutions. Among them, carbon materials show significant adsorption yields. This may be because of their large surface area and good distribution of pore size. Therefore, using new carbonaceous materials as adsorbents is interesting for scientists. An example of a new carbonaceous material is graphene, whose atoms are arranged in a 2D honeycomb structure [20]. As literature results show, graphene has a high adsorption capacity for removal of aqueous pollutants [21][22][23][24][25].In the present study, the potential application of graphene for 4-chloro-2-nitrophenol (4C2NP) adsorption Pol. J. Environ. Stud. Vol. 23, No. 6 (2014), 2111-2116 Original (4C2NP) is an important chemical widely used in the pharmaceuticals, herbicide, and pesticide industries. The ability of graphene to remove 4C2NP from aqueous solutions was performed as a function of contact time, amounts of adsorbent, pH, initial 4C2NP concentrations, and temperatures using a batch technique. Based on the results, the amount of 4C2NP adsorption increased with increasing initial concentration, whereas the alkaline pH range, higher graphene dosage, and higher temperature were unfavorable. Non-linear regression methods suggest that the isotherm data can be well described by the Freundlich isotherm equation. The adsorption kinetic data were analyzed using the non-linear rate equations of pseudo-first and pseudo-second order. It was found that the pseudo-second-order kinetic model was the most appropriate model, describing the adsorption kinetics. The observed changes in the standard Gibbs free energy (ΔGº), standard enthalpy (ΔHº), and standard entropy (ΔSº) show that the adsorption of 4C2NP by graphene is feasible, spontaneous, and exothermic in the temperature range 298-328 K.

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Synergistic Antibacterial Brilliant Blue/Reduced Graphene Oxide/Quaternary Phosphonium Salt Composite with Excellent Water Solubility and Specific Targeting Capability

Cited by 141 publications

References 41 publications

Removal of Cr(VI) by 3D TiO 2 -graphene hydrogel via adsorption enriched with photocatalytic reduction

Removal of Cr(VI) by 3D TiO 2 -graphene hydrogel via adsorption enriched with photocatalytic reduction

Polyurethane-coated silica particles with broad-spectrum antibacterial properties

Decontamination of 4-Chloro-2-Nitrophenol from Aqueous Solution by Graphene Adsorption: Equilibrium, Kinetic, and Thermodynamic Studies

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