Environmental remediation and superhydrophilicity of ultrafine antibacterial tungsten oxide-based nanofibers under visible light source

Srisitthiratkul, Chutima; Yaipimai, Wittaya; Intasanta, Varol

doi:10.1016/j.apsusc.2012.07.050

Cited by 25 publications

(11 citation statements)

References 27 publications

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“…2b. Furthermore, the TEM analysis also suggested that the metal oxide nanofibers constituted of nanosized grains along their axis as observed previously in literature [13]. However, by highmagnification TEM, a unique structure unseen before was unveiled.…”

Section: Resultsmentioning

confidence: 52%

“…The Bacteria and viruses were among microbes instigating biological pollution in air and water resources worldwide [56,57]. As routes to tackle such problems in broad range of circumstances are being intensively investigated, nanostructured antimicrobial agents are of particularly strong potential due to their small sizes, high active surface area, and unique size-dependent characteristics [13,15,48]. Specifically, nanosilver has emerged as a potent antimicrobial agent capable of killing vast range of microbes [58].…”

Section: Surface Aspect Of Structural Complexity In the Fabrication Omentioning

confidence: 99%

“…Surface of magnetic WO 3 nanofibers was decorated with nanosilver via a facile and cost-effective photochemical reaction [13,15]. The following protocol is given as an example.…”

Section: Nanosilver Depositionmentioning

confidence: 99%

“…Among promising material solutions, solar light-active photocatalytic materials with potent antibacterial property and recoverability would offer one of the most convenient and economical environmental mitigation platforms for both types of pollutions [13][14][15]. In particular, photocatalysts capable of utilizing naturally abundant solar energetic spectrum were of interest for elimination of airborne and water-soluble chemical pollution [16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

“…The photocatalyst which is active toward solar light spectrum is anticipated to be impactful in many potential arena such as self-cleaning [13], environmental remediation [13,17,48], sensing and electrochromic devices [49,50]. In addition, by electrospinning, tungsten oxide precursor solutions could be fabricated into fibers with diameter at nanometer length scale [13,49]. For these reasons, tungsten oxide was chosen to be the base matrix for the photocatalyst nanofibers.…”

Section: Introductionmentioning

confidence: 99%

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Multifunctional metal and metal oxide hybrid nanomaterials for solar light photocatalyst and antibacterial applications

et al. 2015

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While simple mixing of the multiple nanostructural components might not necessarily satisfy the multiple functional requirements, this research work showed that such structural complexity demanded both strategic structural design and deliberate fabrication methods. As such, nanosilver-hybridized WO 3 nanofibers incorporating paramagnetic CoFe 2 O 4 nanoparticles were for the first time fabricated following three aspects of morphological control-bulk crystallinity, fiber chemical compositions, and surface modifications. Experimentally, co-precipitation, eletrospinning, and photodeposition were employed to synthesize CoFe 2 O 4 nanoparticles, generate magnetically recoverable solar light-active photocatalyst nanofibers, and decorate them with nanosilver, respectively. The successful synthetic steps represented a facile and scalable route to multifunctional nanocatalyst against waterborne pollutants with organic and microbial constituents via WO 3 photocatalytic system. The work extended to nanofiber fabrication using the NS LAB 500 Nanospider machine which allowed for the pilot-scale hybrid nanofibrous catalyst effective under natural sunlight towards elimination of a model waterborne pollutant.

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Section: Resultsmentioning

confidence: 52%

Section: Surface Aspect Of Structural Complexity In the Fabrication Omentioning

confidence: 99%

“…Surface of magnetic WO 3 nanofibers was decorated with nanosilver via a facile and cost-effective photochemical reaction [13,15]. The following protocol is given as an example.…”

Section: Nanosilver Depositionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Multifunctional metal and metal oxide hybrid nanomaterials for solar light photocatalyst and antibacterial applications

et al. 2015

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Electrospun Nanofiber-Based Photocatalysts

2014

Nanostructure Science and Technology

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Reversible wettability between superhydrophobicity and superhydrophilicity of Ag surface

et al. 2016

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We present a facile one-step method to fabricate superhydrophobic Ag surface by electrodeposition without using any low surface energy reagent. The water contact angle of the prepared surface is 167.1°and the sliding angle is only 0.5°after heat treatment. It is demonstrated by the field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analyses that the dendrites of rough micro-nanostructure combined with the spontaneously adsorbed hydrocarbon make the surface exhibit superhydrophobicity. However, the superhydrophobic Ag surface becomes superhydrophilic when the surface is irradiated by UV light for several hours. It recovers superhydrophobicity after further heat treatment and can successfully implement the reversible wettability transition between superhydrophobicity and superhydrophilicity for several cycles.

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Environmental remediation and superhydrophilicity of ultrafine antibacterial tungsten oxide-based nanofibers under visible light source

Cited by 25 publications

References 27 publications

Multifunctional metal and metal oxide hybrid nanomaterials for solar light photocatalyst and antibacterial applications

Multifunctional metal and metal oxide hybrid nanomaterials for solar light photocatalyst and antibacterial applications

Electrospun Nanofiber-Based Photocatalysts

Reversible wettability between superhydrophobicity and superhydrophilicity of Ag surface

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