Effectiveness of photodecomposition of rhodamine B and malachite green upon coupled tricomponent TiO2(Anatase-Rutile)/ZnO nanocomposite

Zhang, Dongfang

doi:10.2478/acs-2013-0038

Cited by 12 publications

(4 citation statements)

References 72 publications

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“…1: FTIR spectrum of the dried 50TiO 2 :50ZnO, 2: UV-Vis transition spectra of 90TiO 2 :10ZnO and 50TiO 2 :50ZnO, 3: SEM image of the 50TiO 2 :50ZnO and 4: SEM image of the 50TiO 2 :50ZnOAll peaks below the 700𝑐𝑐𝑐𝑐 −1 related to 𝑇𝑇𝑇𝑇𝑂𝑂 2 and ZnO such as 560𝑐𝑐𝑐𝑐 −1 that attributed to the frequency of Ti¬-O-Ti bonds. The vibration peak at about 1200 𝑐𝑐𝑐𝑐 −1 also is registered by Hamza et al 2013 in FTIR spectra of pure𝑇𝑇𝑇𝑇𝑂𝑂 2 [22][23][24]. The peaks in 2932𝑐𝑐𝑐𝑐 −1 and 2850𝑐𝑐𝑐𝑐 −1 correspond to the stretching vibrations of hydrocarbon impurities bond.…”

mentioning

confidence: 51%

Synthesis Photocatalytic TiO2/ZnO Nanocomposite and Investigation through Anatase, Wurtzite and ZnTiO3 Phases Antibacterial Behaviors

Mohammadi

Ghorbani

2018

JNanoR

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Titanium dioxide is prepared by sol gel method from titanium tetraisopropoxide (TTIP) as precursor and likewise zinc oxide is prepared by sol gel method from zinc acetate dehydrate (ZAD) as precursor. The composite sols are prepared in three different molar ratios 90TiO2:10ZnO, 70TiO2:30ZnO and 50TiO2:50ZnO. Thin film deposition is carried out by dip coating technique. Crystal structure, surface morphology and photocatalytic activity of the prepared nanocomposite thin films are investigated. The antibacterial activity of the prepared nanocomposite thin film against E-coli ATCC 25922 bacteria is examined by placing the thin film in standard aqueous E-coli medium under UV light for 1, 2, 3 and 4 hours and then counting the bacteria with Standard Plate Count Agar (SPC) technique. The prepared thin films have shown strong antibacterial activity in the presence of UV light and by increasing the ZnO molar ratio from 10 to 50, antibacterial activity of the thin films decreases because of decreases in the anatase phase of the TiO2. In the dark conditions by increasing the molar ratio of ZnO, the antibacterial activity of the thin films increases and this phenomenon is related to increasing the zinc ions in the thin films.

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confidence: 51%

Synthesis Photocatalytic TiO2/ZnO Nanocomposite and Investigation through Anatase, Wurtzite and ZnTiO3 Phases Antibacterial Behaviors

Mohammadi

Ghorbani

2018

JNanoR

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“…A comparative account of the catalytic performance of ZnO based materials using similar organic pollutants reported in the literature has been shown in Table 3. 11,31,[36][37][38][39][40][41][42][43][44][45][46][47][48] Photocatalytic reaction mechanism 11,32 But in the case of the ternary composite, the excited photoelectrons achieve extended delocalization from CB TiO 2 to the AuNPs. AuNPs act as a reservoir of the photoelectrons on account of lower Fermi energy of the nobel metal.…”

Section: Photocatalytic Activitymentioning

confidence: 99%

Design and application of Au decorated ZnO/TiO₂as a stable photocatalyst for wide spectral coverage

Mukhopadhyay

Maiti

Chatterjee

et al. 2016

Phys. Chem. Chem. Phys.

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A ternary nanostructured photocatalyst consisting of ZnO/TiO/Au was designed to achieve an enhanced solar absorption due to the coupling of surface enhanced plasmonic absorption of metal and semiconductor excitons. TiO coated ZnO rods with an aspect ratio of 8-12 were decorated with citrate capped gold nanoparticles for photocatalytic degradation of organic pollutants in simulated waste water under solar irradiation. Simulated waste water was prepared so as to get a mixture exhibiting a wide range of spectral distribution in the UV-visible region by deliberately mixing congo red, methylene blue and malachite green. Photo-oxidation of few phenolic compounds such as phenol, 4-chlorophenol and polycyclic aromatic hydrocarbons viz. anthracene and phenanthrene were also investigated in order to rule out the visible light sensitization of the dye molecules and confirm the photocatalytic efficacy of the ternary composite for a wide range of water pollutants under simulated solar irradiation. The composite exhibited enhanced photocatalytic activity and photoelectrochemical stability upon UV and visible light exposure. This enhanced efficiency was also corroborated with the photocarrier lifetime and chronoamperometric studies. Under simulated solar irradiation, UV light induced well separated charge carriers coupled with the visible light induced local surface plasmon resonance of AuNPs to exert significantly enhanced photocatalytic activity in a broad spectral region. This type of material may evolve as a novel photocatalyst for the efficient removal of organic contaminants in waste water and photoelectrochemical water splitting under the solar spectrum.

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“…For the photocatalytic decomposition of Rhodamine B Dye over TiO 2 nanoparticles, the main products of decomposition are CO 2 and H 2 O [ 41 , 42 ].…”

Section: Resultsmentioning

confidence: 99%

The effect of titanium dioxide synthesis technique and its photocatalytic degradation of organic dye pollutants

Dodoo‐Arhin

Buabeng

Mwabora

et al. 2018

Heliyon

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Nanostructured mesoporous titanium dioxide (TiO2) particles with high specific surface area and average crystallite domain sizes within 2 nm and 30 nm have been prepared via the sol-gel and hydrothermal procedures. The characteristics of produced nanoparticles have been tested using X-Ray Diffraction (XRD), Brunauer–Emmett–Teller (BET) surface area analysis, Scanning Electron Microscopy (SEM), Fourier Transform Infra-Red (FTIR), and Raman Spectroscopy as a function of temperature for their microstructural, porosity, morphological, structural and absorption properties. The as-synthesized TiO2 nanostructures were attempted as catalysts in Rhodamine B and Sudan III dyes' photocatalytic decomposition in a batch reactor with the assistance of Ultra Violet (UV) light. The results show that for catalysts calcined at 300 °C, ∼100 % decomposition of Sudan III dye was observed when Hydrothermal based catalyst was used whiles ∼94 % decomposition of Rhodamine B dye was observed using the sol-gel based catalysts. These synthesized TiO2 nanoparticles have promising potential applications in the light aided decomposition of a wide range of dye pollutants.

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Effectiveness of photodecomposition of rhodamine B and malachite green upon coupled tricomponent TiO2(Anatase-Rutile)/ZnO nanocomposite

Cited by 12 publications

References 72 publications

Synthesis Photocatalytic TiO<sub>2</sub>/ZnO Nanocomposite and Investigation through Anatase, Wurtzite and ZnTiO<sub>3</sub> Phases Antibacterial Behaviors

Synthesis Photocatalytic TiO<sub>2</sub>/ZnO Nanocomposite and Investigation through Anatase, Wurtzite and ZnTiO<sub>3</sub> Phases Antibacterial Behaviors

Design and application of Au decorated ZnO/TiO₂as a stable photocatalyst for wide spectral coverage

The effect of titanium dioxide synthesis technique and its photocatalytic degradation of organic dye pollutants

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Effectiveness of photodecomposition of rhodamine B and malachite green upon coupled tricomponent TiO2(Anatase-Rutile)/ZnO nanocomposite

Cited by 12 publications

References 72 publications

Synthesis Photocatalytic TiO<sub>2</sub>/ZnO Nanocomposite and Investigation through Anatase, Wurtzite and ZnTiO<sub>3</sub> Phases Antibacterial Behaviors

Synthesis Photocatalytic TiO<sub>2</sub>/ZnO Nanocomposite and Investigation through Anatase, Wurtzite and ZnTiO<sub>3</sub> Phases Antibacterial Behaviors

Design and application of Au decorated ZnO/TiO2as a stable photocatalyst for wide spectral coverage

The effect of titanium dioxide synthesis technique and its photocatalytic degradation of organic dye pollutants

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Design and application of Au decorated ZnO/TiO₂as a stable photocatalyst for wide spectral coverage