Photocatalytic Degradation of p-Nitrophenol (PNP) in Aqueous Suspension of TiO&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;

Islam, Shafiqul; Bormon, Sumon Kumar; Nadim, Md; Hossain, Kamrul; Habib, Ahsan; Islam, Towhidul

doi:10.4236/ajac.2014.58057

Cited by 11 publications

(5 citation statements)

References 20 publications

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“…The highest efficiency was observed at a pH value of about 7.5 (Fig. As Islam et al 23 expressed the effect of pH on the degradation of 4-NP against TiO 2 at neutral conditions, the following reaction is possible for the generation of • OH: It is clear that the change in the solution pH has a critical effect on the 4-NP photoreduction, directly affecting the surface charge properties of the photocatalyst and the adsorption of pollutants.…”

Section: Effect Of Phmentioning

confidence: 99%

“…6,23 To evaluate the photocatalytic activity at different pH values, the S2 sample was used. 6,23 To evaluate the photocatalytic activity at different pH values, the S2 sample was used.…”

Section: Effect Of Phmentioning

confidence: 99%

“…The pH value of the reaction medium during the photoreduction reaction plays a very significant role in the process design and control of photocatalysts. 6,23 To evaluate the photocatalytic activity at different pH values, the S2 sample was used. The highest efficiency was observed at a pH value of about 7.5 (Fig.…”

Section: Effect Of Phmentioning

confidence: 99%

“…Therefore, we suggest that a pH of 7.5 is the optimum for the reduction of 4-NP with the S2 sample nanocomposite. As Islam et al 23 expressed the effect of pH on the degradation of 4-NP against TiO 2 at neutral conditions, the following reaction is possible for the generation of • OH:…”

Section: Effect Of Phmentioning

confidence: 99%

See 3 more Smart Citations

Applications of a new type of poly(methyl methacrylate)/TiO2 nanocomposite as an antibacterial agent and a reducing photocatalyst

Salabat

Mirhoseini

2015

Photochem Photobiol Sci

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A new type of poly(methyl methacrylate) (PMMA)/TiO2 nanocomposite film sensitized by ionic liquids with a low dosage of TiO2 nanoparticles was prepared based on a microemulsion method. The photocatalytic activity, via the photoreduction of 4-nitrophenole (4-NP) to 4-aminophenole (4-AP) by NaBH4, and the photocatalytic-based antibacterial activity, for the destruction of Escherichia coli and Staphylococcus aureus, of the prepared nanocomposite film were investigated. The conditions for the maximum efficiency in the presence of visible light irradiation have been evaluated. The rate constant of the photoreduction of 4-NP to 4-AP was calculated and the maximum rate constant was found with the 0.01 wt% of TiO2 dosage in the photocatalyst and a solution pH of 7.5. The photocatalytic antibacterial maximum activity against Gram-negative bacteria was also obtained for the 0.01 wt% of TiO2 concentration of the photocatalyst. A notable result of this work is that PMMA/TiO2 nanocomposite films show efficient photocatalytic activity at very low loadings of TiO2, in contrast to other previous reports.

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Section: Effect Of Phmentioning

confidence: 99%

“…6,23 To evaluate the photocatalytic activity at different pH values, the S2 sample was used. 6,23 To evaluate the photocatalytic activity at different pH values, the S2 sample was used.…”

Section: Effect Of Phmentioning

confidence: 99%

Section: Effect Of Phmentioning

confidence: 99%

Section: Effect Of Phmentioning

confidence: 99%

See 2 more Smart Citations

Applications of a new type of poly(methyl methacrylate)/TiO2 nanocomposite as an antibacterial agent and a reducing photocatalyst

Salabat

Mirhoseini

2015

Photochem Photobiol Sci

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“…Hence, the reduction of NiP using various catalyst systems is the only way to reduce the pollution caused by the NiP. Currently, various catalyst systems such as iron niobate [6], hydroxyapatite [7], Au nanoparticles (NP) [8], Au-SiO 2 [9], layered double hydroxides (LDH) [10], TiO 2 [11], Al 2 O 3 [12], Pd-Ag [13], AC-Ag [14], Au-CeO 2 [15], aminoclay-Fe NP [16], Clay-Pt [17], Fe 3 O 4 [18], Ni-Se [19] and Ni-P [20] are used for the reduction of NiP. Through study of the literature, any report based on the Cu and Al nanoparticles as a catalyst for the reduction of NiP in the presence of NaBH 4 is not found.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and application of superhydrophobic low-cost Cu and Al nanoparticles

Anbarasan

Palanikumar²,

Devi³

et al. 2018

Int Nano Lett

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Cu and Al nanoparticles were prepared using a simple chemical etching method followed by a chemical reduction method. The synthesized metal nanoparticles were characterized by Fourier transform infrared (FTIR) spectroscopy, UV-visible spectroscopy, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), high-resolution transmission electron microscopy (HRTEM), electron-dispersive (EDX) spectrum and water contact angle (WCA) measurements. The application of Cu and Al nanoparticles was tested towards the catalytic reduction of 4-nitrophenol (NiP), hexavalent chromium {Cr(VI)} and rhodamine 6G (R6G) dye in the presence sodiumborohydride (NaBH 4) as a reducing agent. From the UV-visible spectrum, the reduction rate constant (k app) and the induction time (T i) were determined and compared critically. The HRTEM analysis confirmed the nanosize of Cu and Al prepared by a simple chemical etching process followed by the chemical reduction method.

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Photo-decontamination of p-nitrophenol using reusable lanthanum doped ZnO electrospun nanofiber catalyst

Lakshmi

Kadirvelu

Mohan

2018

J Mater Sci: Mater Electron

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Photocatalytic Degradation of p-Nitrophenol (PNP) in Aqueous Suspension of TiO<sub>2</sub>

Abstract: Cl− is found to be detrimental to the photodegradation of PNP. Hydrogen ion concentration of reaction mixture was found to increase continuously during photodegradation suggesting mineralization of PNP.

Cited by 11 publications

References 20 publications

Applications of a new type of poly(methyl methacrylate)/TiO2 nanocomposite as an antibacterial agent and a reducing photocatalyst

Applications of a new type of poly(methyl methacrylate)/TiO2 nanocomposite as an antibacterial agent and a reducing photocatalyst

Synthesis, characterization and application of superhydrophobic low-cost Cu and Al nanoparticles

Photo-decontamination of p-nitrophenol using reusable lanthanum doped ZnO electrospun nanofiber catalyst

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