Enhanced photocatalytic activity of nanostructured titanium dioxide/polyaniline hybrid photocatalysts

Reddy, Kakarla Raghava; Karthik, K.; Prasad, S.; Soni, Sarvesh K.; Jeong, Han Mo; Raghu, Anjanapura V.

doi:10.1016/j.poly.2016.08.029

Cited by 395 publications

(103 citation statements)

References 35 publications

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“…Design and construction of semiconductor photocatalysts have been extensively studied due to the strong demand for pollutants remediation to improve the environment Organic pollutants like dyes have detrimental effect for the whole ecosystem Semiconductors with various nanostructures such as nanoparticles, nanoplates, nanorods, and nanotubes have been used as a photocatalysts for degradation of organic dyes and toxic metal related pollutants and energy applications ,…”

Section: Introductionmentioning

confidence: 99%

Electrospun Mesoporous Composite CuO−Co₃O₄/N‐ TiO₂Nanofibers as Efficient Visible Light Photocatalysts

2017

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One-dimensional mesoporous composite CuO À Co 3 O 4 /N-TiO 2 nanofibers (CuCoNT NFs) have been fabricated by in situ sol À gel electrospinning technique. In our approach, both polyvinylpyrrolidone (PVP) and polyethylene glycol (PEG) are used as dual polymeric carrier matrix for the fabrication of electrospun CuCoNT NFs. PVP chains assist the electrospinning of the uniform composite nanofibers whereas PEG is responsible for mesoporosity which is confirmed by N 2 sorption analyses. Along with CuCoNT NFs, other nanofiber samples (TiO 2 NFs, NTiO 2 NFs, CuO/N-TiO 2 NFs, Co 3 O 4 /N-TiO 2 NFs) have also been fabricated for comparative studies. The morphology and composition of the NFs have been confirmed by the HR-TEM and XPS analyses. The red shifting of band gap energy from anatase TiO 2 NFs to composite CuCoNT NFs (1.57 eV) is suggesting formation of visible light response. Oxygen vacancies in CuCoNT NFs, leads to lowering the e À À h + recombination. The lowering of photoluminescence spectrum and high photocurrent response in CuCoNT NFs makes CuO as low cost cocatalyst. The composite CuCoNT NFs is treated as an efficient photocatalyst for swift degradation of mixed dyes in visible light, an exemplary move. Exactly, 100% mixed dyes (30 mg/L) degradation is achieved at pH 10 in just 60 minutes.

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Section: Introductionmentioning

confidence: 99%

Electrospun Mesoporous Composite CuO−Co₃O₄/N‐ TiO₂Nanofibers as Efficient Visible Light Photocatalysts

2017

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“…Hydrotalcite (HT), integrating the physical and chemical properties of Al 2 O 3 and MgO, was reported as a good support for phenol hydrogenation because the adequate basic sites on HT promote the adsorption of phenol . While TiO 2 , CeO 2 and ZrO 2 are also good candidates as support in phenol hydrogenation due to their tunable hydrophilicity and acid‐base properties ,. In addition, non‐metal oxides SiO 2 , as a stable material with tunable porous structure (especially mesopores) and surface groups, is also frequently applied as catalysts support in the liquid‐phase hydrogenation of phenol.…”

Section: Liquid‐phase Hydrogenation Of Phenolmentioning

confidence: 99%

Selective Hydrogenation of Phenol

et al. 2018

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The selective hydrogenation of phenol to cyclohexanone has attracted a great deal of attention both in industry and academia. In this review, the significance, strategies and mechanisms for the production of cyclohexanone are briefly described. Then, the evolution of phenol hydrogenation in gas/liquid phase is summarized according to catalyst type. In situ hydrogenation techniques including catalytic transfer hydrogenation (CTH) and electrocatalytic hydrogenation (ECH) of phenol are also discussed. Although the technology for catalyst design has developed rapidly within the past decades, direct evidence to understand the reaction mechanisms and kinetics is still scarce. Therefore, it is still challengingto explore the function mechanisms and design advanced catalysts with high activity and high selectivity (>95%) for direct hydrogenation of phenol to cyclohexanone. This review may provide guidance for these attempts.

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“…As azo dyes are difficult to degrade into non‐toxic compounds, diverse treatment methods have been developed, such as physical and chemical reduction, adsorption and oxidation. Among all solutions, catalytic reduction has exhibited the highest efficiency.…”

Section: Introductionmentioning

confidence: 99%

Application of palladium nanoparticle‐decorated Artemisia abrotanum extract‐modified graphene oxide for highly active catalytic reduction of methylene blue, methyl orange and rhodamine B

Salehi

Yousefi

Hekmati

et al. 2019

Applied Organom Chemis

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A green palladium‐based catalyst supported on Artemisia abrotanum extract‐modified graphene oxide (Pd NPs/RGO‐A. abrotanum) hybrid material has been used as a recoverable and heterogeneous nanocatalyst for the catalytic reduction of various dyes, including methylene blue, methyl orange and rhodamine B, in the presence of NaBH4 as reducing agent in aqueous medium at room temperature. With the help of UV–visible spectroscopy, the catalytic reactions were investigated. According to the results, these reactions followed the pseudo‐first‐order rate equation.

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Enhanced photocatalytic activity of nanostructured titanium dioxide/polyaniline hybrid photocatalysts

Cited by 395 publications

References 35 publications

Electrospun Mesoporous Composite CuO−Co₃O₄/N‐ TiO₂Nanofibers as Efficient Visible Light Photocatalysts

Electrospun Mesoporous Composite CuO−Co₃O₄/N‐ TiO₂Nanofibers as Efficient Visible Light Photocatalysts

Selective Hydrogenation of Phenol

Application of palladium nanoparticle‐decorated Artemisia abrotanum extract‐modified graphene oxide for highly active catalytic reduction of methylene blue, methyl orange and rhodamine B

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Enhanced photocatalytic activity of nanostructured titanium dioxide/polyaniline hybrid photocatalysts

Cited by 395 publications

References 35 publications

Electrospun Mesoporous Composite CuO−Co3O4/N‐ TiO2 Nanofibers as Efficient Visible Light Photocatalysts

Electrospun Mesoporous Composite CuO−Co3O4/N‐ TiO2 Nanofibers as Efficient Visible Light Photocatalysts

Selective Hydrogenation of Phenol

Application of palladium nanoparticle‐decorated Artemisia abrotanum extract‐modified graphene oxide for highly active catalytic reduction of methylene blue, methyl orange and rhodamine B

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Product

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Electrospun Mesoporous Composite CuO−Co₃O₄/N‐ TiO₂Nanofibers as Efficient Visible Light Photocatalysts

Electrospun Mesoporous Composite CuO−Co₃O₄/N‐ TiO₂Nanofibers as Efficient Visible Light Photocatalysts