Photocatalytic degradation of alizarin red dye in aqueous medium using carbon nanotubes/Cu–Ti oxide composites

Saeed, Khalid; Zada, Noor; Khan, Idrees

doi:10.1080/01496395.2018.1552296

Cited by 12 publications

(12 citation statements)

References 19 publications

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“…Most of the photocatalysts work best in fresh form but their efficiency falls after the first use. Saeed et al [1] reported that the recovered MWNTs/CuÀ Ti degraded only 58.18% dye under the same experimental conditions. Likewise, the fresh CuÀ Ti NPs degraded 90.08% dye within 180 min, while the regenerated CuÀ Ti NPs degraded only 51.82% under the same irradiation time and reaction conditions.…”

Section: Recycling and Reuse Of The Tms-cm Catalystmentioning

confidence: 80%

“…Likewise, the fresh CuÀ Ti NPs degraded 90.08% dye within 180 min, while the regenerated CuÀ Ti NPs degraded only 51.82% under the same irradiation time and reaction conditions. [1] Interestingly, the TMS-CM were recycled and reused for six consecutive batches at the optimal conditions that maintained excellent photocatalytic activity up to 86.7% (Figure 7(F)). For this investigation, after the first batch of photocatalysis process, once used TMS-CM was washed thoroughly with distilled water and dried, thus getting almost the same quantity of TMS-CM, which were then utilized, for further photocatalysis of ARS in aqueous medium and percentage degradation was determined.…”

Section: Recycling and Reuse Of The Tms-cm Catalystmentioning

confidence: 99%

“…Waste effluents from the textile, pharmaceutical, and food industries contain poisonous synthetic dyes, pharmaceutical drugs, and other organic micro-contaminants. [1] Approximately, over 100,000 commercial dyes and dyestuffs are utilized in the coloring of leather, cosmetic and textile products. About 10-15% of these dying stuff is fed into wastewater without any prior treatment.…”

Section: Introductionmentioning

confidence: 99%

“…Water, a vital and indispensable need for life is being polluted day by day due to indiscriminate waste disposal to water bodies by various industries. Waste effluents from the textile, pharmaceutical, and food industries contain poisonous synthetic dyes, pharmaceutical drugs, and other organic micro‐contaminants . Approximately, over 100,000 commercial dyes and dyestuffs are utilized in the coloring of leather, cosmetic and textile products.…”

Section: Introductionmentioning

confidence: 99%

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Selenide‐chitosan as High‐performance Nanophotocatalyst for Accelerated Degradation of Pollutants

Ali

Ahmad

Khan

et al. 2020

Chemistry An Asian Journal

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Water pollution is one of the major global challenges today. Water bodies are contaminated by the heavy release of waste effluents of textile industries, which includes intensively colored dye pollutants. Herein, a ternary nanocomposite of bismuth copper selenide with small particle size and ternary metal selenide (TMS)‐chitosan microspheres (TMS‐CM) of the spherical porous surface were successfully synthesized. SEM, XRD, EDX, FTIR, and UV/Vis spectrophotometry analysis revealed the structural and morphological characteristics of the newly synthesized nanocomposites. SEM imaging showed the average diameter of TMS nanoparticle to be 33 nm. The crystal size was calculated as 6.33 nm and crystalline structure as orthorhombic using XRD findings. EDX confirmed the presence of Bi, Cu, and Se in the ternary nanocomposite. The bandgap of 1.8 eV was calculated from Tauc's plot for the TMS nanocomposite. SEM confirmed the successful synthesis of spherical TMS‐CM microspheres of porous surface morphology with an average size of 885.6 μm. The presence of chitosan microspheres in the synthesis of TMS nanocomposite was identified by FTIR spectral analysis. Furthermore, highly efficient photocatalytic degradation (up to 95.4%) of ARS was achieved within 180 min at pH 4.0 using 0.5 g of TMS‐CM in sunlight. The first‐order kinetic model fitted well to the photocatalytic decontamination of ARS using TMS‐CM with a rate constant of 6.1x10−2 min−1. The TMS‐CM gave attractive results and high efficiency in photocatalytic degradation of ARS dye after reusing and regeneration of up to seven successive cycles. The newly synthesized nanophotocatalyst could be efficiently used for the decontamination of dye polluted water from textile industries.

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Section: Recycling and Reuse Of The Tms-cm Catalystmentioning

confidence: 80%

Section: Recycling and Reuse Of The Tms-cm Catalystmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Selenide‐chitosan as High‐performance Nanophotocatalyst for Accelerated Degradation of Pollutants

Ali

Ahmad

Khan

et al. 2020

Chemistry An Asian Journal

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“…The XRD spectrum also gives peaks at about 35 • and 54 • , which shows that the copper oxide NPs are also formed successfully. The particle size of Cu-Ti NPs calculated from SEM and XRD were 22.7 nm and 23.5 nm (Table 1, entry 5) while the surface area of Cu-Ti NPs and Cu-Ti/FMWCNTs were 31.8 m 2 /g and 230.1 m 2 /g ( Table 1, entries 5 and 6), respectively [30].…”

Section: Introductionmentioning

confidence: 99%

Extending the Hierarchy of Heterogeneous Catalysis to Substituted Derivatives of Benzimidazole Synthesis: Transition Metals Decorated CNTs

Iqbal

Sadiq

et al. 2019

Catalysts

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A simple and practical procedure has been adopted for one pot synthesis of benzimidazole derivatives under mild reaction conditions, starting from cinnamyl alcohol (COH) with bimetallic nanoparticles (BNPs) and supported bimetallic nanoparticles of Cu, Ti, Zn, Mn, Ag, and Co. All the catalysts were characterized by Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDX), X-Ray Diffractometry (XRD), Brunauer Emmett-Teller (BET) surface area, and pore size analyzer. The products were identified/quantified with 1HNMR, FT-IR, and MS. 98% yield of substituted derivatives of benzimidazole was obtained with Cu–Ti supported on FMWCNTs in ethanol with excellent selectivity. Quantum chemical calculations of molecular reactivity of substituted cinnamaldehyde (CHO) and ortho phenylenediamine (OPD) have good consistency with experimental results. The returns of this work were the use of readily available catalysts, high yield, short reaction time, and simplicity of the process.

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Solar Light Assisted Metal Selenide-Chitosan Nanoparticles from Structure Tailoring to Photocatalytic Mineralization of Selected Industrial Dyes

Azam,

Farhan,

Khan

et al. 2024

Water Air Soil Pollut

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Photocatalytic degradation of alizarin red dye in aqueous medium using carbon nanotubes/Cu–Ti oxide composites

Cited by 12 publications

References 19 publications

Selenide‐chitosan as High‐performance Nanophotocatalyst for Accelerated Degradation of Pollutants

Selenide‐chitosan as High‐performance Nanophotocatalyst for Accelerated Degradation of Pollutants

Extending the Hierarchy of Heterogeneous Catalysis to Substituted Derivatives of Benzimidazole Synthesis: Transition Metals Decorated CNTs

Solar Light Assisted Metal Selenide-Chitosan Nanoparticles from Structure Tailoring to Photocatalytic Mineralization of Selected Industrial Dyes

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