Fluorescent Si QD decoration onto a flexible polymeric electrospun nanofibrous mat for the colorimetric sensing of TNT

Plasmonic enhancement for electron-hole separation efficiency and visible light photocatalysis was achieved by Pd nanocube decoration on a ZnO nanolayer coated onto electrospun polymeric (polyacrylonitrile (PAN)) nanofibers. Since exciton formation and sustainable electron-hole separation have a vital importance for realizing better solar energy in photovoltaic and photocatalytic devices, we achieved visible light photocatalysis by Pd nanocube decoration onto well designed core-shell nanofibers of ZnO@PAN-NF. By controlling the cubic Pd nanoparticle size and the thickness of the crystalline ZnO nanolayer deposited onto electrospun PAN nanofibers via atomic layer deposition (ALD), defect mediated visible light photocatalysis efficiency can be increased. By utilizing nanofabrication techniques such as thermal decomposition, electrospinning and ALD, this fabricated template became an efficient, defect mediated, Pd nanocube plasmon enhanced photocatalytic system. Due to the enhanced contact features of the Pd nanocubes, an increase was observed for the visible light photocatalytic activity of the flexible and nanofibrous mat of Pd@ZnO@PAN-NF.

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“…Electrospinning is a very promising technique for the fabrication of diverse functional nanofibers [30][31][32] as portrayed in Fig. 1a.…”

Section: Resultsmentioning

confidence: 99%

Pd nanocube decoration onto flexible nanofibrous mats of core–shell polymer–ZnO nanofibers for visible light photocatalysis

et al. 2017

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“…Figure 1 Summary of electrospun nanofibrous membranes with different fluorescence materials for application in trace explosive detection [41][42][43][44][45][46][47] (color online).…”

Section: 电子转移(Electron Transfer)mentioning

confidence: 99%

Electrospun fluorescent nanofibrous membranes for trace explosive detection

Ke¹,

Zhu²,

Ren³

et al. 2019

Sci. Sin.-Chim

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“…Hence, our previous work, which investigated the formation of Si QD and decoration of Nylon 6,6-nanofiber (Nylon 6,6-NF), simply demonstrated that the mild and lightcontrolled reduction of the alkoxysilane precursor is possible for large-scale fabrication of Si QD. 1 From this perspective, high temperatures and pressure, extreme conditions, protec-tive gas environments and tedious procedures were eliminated for the surface-modified and controlled synthesis of the Si QD. [1][2][3] Interestingly, when the (3-aminopropyl)triethoxysilane (APTES) precursor is used, extremely abundant functional groups (e.g., alkoxides, hydroxides, and amine groups) in the aqueous atmosphere seem very suitable environments for progressive chemical organizations such as metal (Pd, Au).…”

Section: Introductionmentioning

confidence: 99%

“…NP attachment via -NH 2 groups or metal oxide (TiO 2 , ZnO) decoration via -OH or alkoxides because the final nanostructure behaves as a nanocoating with a thickness of only a few nanometera. 1 As one of the most studied nanomaterial fabrication techniques in recent years, electrospinning has been extensively investigated. It is possible to utilize polymeric or nanocomposite formulations with different mixtures and chemical structures.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional electrospun polymeric nanofibrous mats for catalytic reduction, photocatalysis and sensing

Arslan

Uyar

2017

Nanoscale

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Fabrication and decoration of flexible Nylon 6,6 polymeric nanofibrous mats for production of multifunctional electrospun material was accomplished via visible light-emitting surface-protected silicon quantum dots (Si QD), ZnO nanoparticles (ZnO NP) and Pd nanocubes (Pd NC). UV-range light was utilized for Si QD production and, after hydrolysis/condensation together with nucleation and growth reactions, amine-modified, fluorescent Si QD were obtained. Additionally, available molecular groups on the Si QD coated onto the polymeric nanofibrous mats provided further attachment of metal oxide and metal NP for various catalytic purposes. Analytical investigations showed that visible-light emission could be maintained on the Nylon 6,6 mats for trinitrotoluene (TNT) sensing. Also, due to consecutive NP decoration, multifunctional, polymeric, flexible nanofibrous mats were obtained. Experiments revealed that fabricated multifunctional mats could reduce molecules such as paranitrophenol effectively or decompose waste dyes such as methylene blue via photocatalytic experiments, and sense the pollutant TNT in aqueous solutions as an all-in-one concept.

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Fluorescent Si QD decoration onto a flexible polymeric electrospun nanofibrous mat for the colorimetric sensing of TNT

Abstract: UV range light was used for the facile synthesis of visible light emitting, surface-protected silicon quantum dots (Si QDs) and electrospun Nylon 6,6 nanofibrous mats were decorated with these Si QD's for selective TNT sensing application.

Cited by 14 publications

References 56 publications

Pd nanocube decoration onto flexible nanofibrous mats of core–shell polymer–ZnO nanofibers for visible light photocatalysis

Pd nanocube decoration onto flexible nanofibrous mats of core–shell polymer–ZnO nanofibers for visible light photocatalysis

Electrospun fluorescent nanofibrous membranes for trace explosive detection

Multifunctional electrospun polymeric nanofibrous mats for catalytic reduction, photocatalysis and sensing

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