Structures, morphological control, and antibacterial performance of tungsten oxide thin films

Tan, Guang-Lei; Tang, Dan; Dastan, Davoud; Jafari, Azadeh; Shi, Zhicheng; Chu, Qian-Qian; Silva, José; Yin, Xi-Tao

doi:10.1016/j.ceramint.2021.03.025

Cited by 73 publications

(17 citation statements)

References 63 publications

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“…7(b). The results of measurements only show 0.4% adsorption that is slightly increased in modified cloisite 30B due to the generation of a radical on ethoxy group of VTES while in prepared composites the adsorption was nearly 65% that provide potential application of PAN/ cloisite 30B nanocomposites as sorbent for the removal of metals from industrial wastewater that generally possesses low pH value [49,50].…”

Section: Atomic Absorption Spectrometrymentioning

confidence: 99%

In situ chemical synthesis and characterization of PAN/clay nanocomposite for potential removal of Pb+2 ions from aqueous media

et al. 2021

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A green synthesis of polymer clay nanocomposites (PCNs) was carried out by in situ polymerization for their potential in order to remove the heavy metal from aqueous solution. At first stage, cloisite was functionalized using Vinyl Triethoxy Silane (VTES) to generate radicals on its surface. After functionalization, the monomer was grafted at these functional sites. The grafting was induced by varying initiator ratio (1.0 2.0 and 3. 0wt %). The maximum grafting of 78% was obtained with 2.0%wt initiator. To enhance number of active sorption sites the PNCs were further modified using hydroxylamine hydrochloride (NH 2 OH.HCl). The characterizations of prepared samples were carried out via Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Diffraction (XRD), Brunauer-Emmett-Teller (BET), Thermogravimetric Analysis (TGA) and Scanning Electron Microscopy (SEM). The adsorption potential of prepared sorbents was checked for lead metal ions via Atomic Absorption Spectroscopy (AAS). The prepared PCNs showed 92% adsorption potential of Pb(II) ion at 5.0 pH with 240 min contact time. KeywordsPolymer clay nanocomposites (PCNs) • Polyacylonitrile (PAN) • Hydroxylamine hydrochloride (NH 2 OH.HCl) • Atomic Absorption Spectroscopy (AAS)

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Section: Atomic Absorption Spectrometrymentioning

confidence: 99%

In situ chemical synthesis and characterization of PAN/clay nanocomposite for potential removal of Pb+2 ions from aqueous media

et al. 2021

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“…Figure 4a exhibits FTIR spectroscopy, depicting a broad transmittance edge near~746 cm −1 , which refers to O-W-O bending modes of vibrations. The occurrence of IR band at~820 cm −1 corresponds to W-O stretching mode of hexagonal WO confirms the hexagonal structure [27]. The structural and molecular information of prepared WO 3 thin film is again checked by Raman spectroscopy (Raman microscope, Renishaw, Wotton-under-Edge, UK), as shown in Figure 4b.…”

Section: Resultsmentioning

confidence: 60%

Controlled Growth of WO3 Pyramidal Thin Film via Hot-Filament Chemical Vapor Deposition: Electrochemical Detection of Ethylenediamine

et al. 2021

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In this work, the structural, optical, morphological, and sensing features of tungsten oxide (WO3) thin film deposited on a silicon substrate via hot-filament chemical vapor deposition (HFCVD) are described. The experimental characterization tools, such as X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), ultraviolet-visible (UV-Vis), and Fourier transform infra-red (FTIR) spectroscopies, etc., were used to determine the properties of WO3 NPys thin films. The grown WO3 thin film illustrated closely packed porous pyramidal nanostructures (NPys) of improved grain size properties. The diffraction analysis revealed (100) and (200) of WO3 phases, suggesting the classic monoclinic crystal WO3 structure. HFCVD grown WO3 NPys thin film was employed as electro-active electrode for detecting ethylenediamine in 10 mL of 0.1 M phosphate buffer solution (PBS) by varying the ethylenediamine concentrations from 10 μM to 200 μM at room temperature. With a detection of limit (LOD) of ~9.56 μM, and a quick reaction time (10 s), the constructed chemical sensor achieved a high sensitivity of ~161.33 μA μM−1 cm−2. The durability test displayed an excellent stability of electrochemical sensor by maintaining over 90% sensitivity after 4 weeks of operation. This work provides a strategy for a facile preparation of WO3 NPys thin film electrode for sensor applications.

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“…An X-ray diffractometer (XRD, l ¼ 0.1542 nm, D/Max-2550V, Rigaku, Japan) was used to analyze the sample structure. [28][29][30] The grain morphologies were characterized via scanning electron microscope/SEM (FEI Magellan 400, Oregon, USA). Transmission electron microscope/TEM (JEOL JEM-2100F) with a working voltage of 200 kV was used to reveal the ceramic microstructures.…”

Section: Methodsmentioning

confidence: 99%

Time dependence of domain structures in potassium sodium niobate-based piezoelectric ceramics

et al. 2021

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Structures, morphological control, and antibacterial performance of tungsten oxide thin films

Cited by 73 publications

References 63 publications

In situ chemical synthesis and characterization of PAN/clay nanocomposite for potential removal of Pb+2 ions from aqueous media

In situ chemical synthesis and characterization of PAN/clay nanocomposite for potential removal of Pb+2 ions from aqueous media

Controlled Growth of WO3 Pyramidal Thin Film via Hot-Filament Chemical Vapor Deposition: Electrochemical Detection of Ethylenediamine

Time dependence of domain structures in potassium sodium niobate-based piezoelectric ceramics

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