Photochemical modification of tea waste by tungsten oxide nanoparticle as a novel, low-cost and green photocatalyst for degradation of dye pollutant

Hemmatzadeh, Ehsan; Bahram, Morteza; Dadashi, Reza

doi:10.1016/j.saa.2024.124104

Cited by 3 publications

(2 citation statements)

References 53 publications

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“…After completely washing the shells, they were dried in the open air at room temperature for 24 h. After that, the dried eggshells were crushed in a grinder for 15 min. Finally, the crushed EGSs are passed through the mesh to obtain the same size and uniform surface area of the EGS and modified by WO 3 according to previous literature 39 .…”

Section: Methodsmentioning

confidence: 99%

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Photodecoration of tungsten oxide nanoparticles onto eggshell as an ultra-fast adsorbent for removal of MB dye pollutant

Dadashi,

Bahram,

Farhadi

et al. 2024

Sci Rep

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Nowadays, the use of natural wastes and adsorbents along with their modification by simple and new methods based on metal oxides to remove dye pollutants has been the focus of many researchers. In this study, for the first time, simple and low-cost modification of eggshell (EGS) with tungsten oxide (WO3) based on the photochemical modification method as a green, ultra-fast, cost-effective, and biodegradable adsorbent is reported to remove of methylene blue (MB) dye pollutant. The EGS modified by WO3 was investigated by EDX, EDX mapping, XRD, FE-SEM, and UV–Vis Diffuse Reflectance (DRS) analyses. The obtained results show that the modified EGS by WO3 has more than ten times (78.5%) the ability to remove MB dye pollutant within 3 min compared to bare EGS (11%). Various parameters including dye pollutant pH, dye concentration, adsorbent dosage, and reusability of the WO3/EGS adsorbent for removal of MB dye pollutant were investigated and the result show that the adsorbent capacity of WO3/EGS is 1.64 mg g−1. EGS adsorbent The synthesis of WO3/EGS adsorbent with a novel photochemical method as a fast and very cheap adsorbent with excellent efficiency can be a promising alternative adsorbent for various purposes in removing dye pollutants from water environments.

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Section: Methodsmentioning

confidence: 99%

“…The removal percentage of MB by WO 3 /EGS at different conditions was calculated using Eq. ( 3 ) at a wavelength of 668 nm, that in this equation R is the removal percentage, C i and C f are the initial and final concentrations of MB 39 , 40 . …”

Section: Methodsmentioning

confidence: 99%

Photodecoration of tungsten oxide nanoparticles onto eggshell as an ultra-fast adsorbent for removal of MB dye pollutant

Dadashi,

Bahram,

Farhadi

et al. 2024

Sci Rep

Self Cite

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Biosynthesis of Zr-doped WO3 nanoparticles: Evaluation of antibacterial, antioxidant, and enzymatic activities

Tahir,

Iqbal,

Shad

et al. 2025

Microbial Pathogenesis

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Advancing Sustainable Approaches for the Removal and Recycling of Toxic Dyes from the Aquatic Environment

Chang Chien,

Joshiba Ganesan

2024

Dye Chemistry - Exploring Colour From Nature to Lab

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The widespread usage of synthetic dyes and chemicals across industries leads to the production of a considerable amount of wastewater. Textile industries, in particular, frequently release harmful dyes directly into the environment, presenting significant threats to human health. Discharging untreated sewage from numerous textile industries contributes to severe environmental consequences. To address these concerns, there is growing emphasis on developing efficient and cost-effective nano-adsorbents, leveraging their distinctive properties to mitigate the ecological impact of dyes. In light of these challenges, significant efforts have been focused on developing efficient adsorbents to remove unwanted substances from wastewater. Effectively and selectively eliminating dyes is increasingly acknowledged as essential for addressing environmental concerns. A comprehensive approach involves comparing the degradation efficiency of different catalysts, considering the search for a suitable adsorbent. This chapter comprehensively examines numerous advanced adsorbents in the literature for dye degradation. In addition to outlining the physicochemical characteristics of various adsorbents, the chapter delves into the mechanisms and effectiveness of the adsorption process. It is crucial to tackle the challenges inherent in dye degradation to alleviate the adverse environmental effects of dyes. A critical evaluation of next-generation adsorbents can advance the adoption of clean and cost-effective water purification practices.

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Photochemical modification of tea waste by tungsten oxide nanoparticle as a novel, low-cost and green photocatalyst for degradation of dye pollutant

Cited by 3 publications

References 53 publications

Photodecoration of tungsten oxide nanoparticles onto eggshell as an ultra-fast adsorbent for removal of MB dye pollutant

Photodecoration of tungsten oxide nanoparticles onto eggshell as an ultra-fast adsorbent for removal of MB dye pollutant

Biosynthesis of Zr-doped WO3 nanoparticles: Evaluation of antibacterial, antioxidant, and enzymatic activities

Advancing Sustainable Approaches for the Removal and Recycling of Toxic Dyes from the Aquatic Environment

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