Photocatalytic degradation of methylene blue by the use of titanium-doped Calcined Mussel Shells CMS/TiO2

Echabbi, Fatine; Hamlich, Mohamed; Harkati, Souad; Jouali, A.; Tahiri, S.; Lazar, S.; Lakhmiri, Rajae; Safi, Mohamed

doi:10.1016/j.jece.2019.103293

Cited by 32 publications

(16 citation statements)

References 21 publications

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“…[ 243 ] For this purpose, using metal mesh [ 243 ] and clay [ 244,245 ] structures have been introduced in literature as well as calcined mussel shells as a platform for TiO 2 doping. [ 246 ]…”

Section: Photocatalysis Related Applications In Uv Sensingmentioning

confidence: 99%

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UV Photochromism in Transition Metal Oxides and Hybrid Materials

Kayani

Kuriakose

Monshipouri

et al. 2021

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Limited levels of UV exposure can be beneficial to the human body. However, the UV radiation present in the atmosphere can be damaging if levels of exposure exceed safe limits which depend on the individual the skin color. Hence, UV photochromic materials that respond to UV light by changing their color are powerful tools to sense radiation safety limits. Photochromic materials comprise either organic materials, inorganic transition metal oxides, or a hybrid combination of both. The photochromic behavior largely relies on charge transfer mechanisms and electronic band structures. These factors can be influenced by the structure and morphology, fabrication, composition, hybridization, and preparation of the photochromic materials, among others. Significant challenges are involved in realizing rapid photochromic change, which is repeatable, reversible with low fatigue, and behaving according to the desired application requirements. These challenges also relate to finding the right synergy between the photochromic materials used, the environment it is being used for, and the objectives that need to be achieved. In this review, the principles and applications of photochromic processes for transition metal oxides and hybrid materials, photocatalytic applications, and the outlook in the context of commercialized sensors in this field are presented.

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Section: Photocatalysis Related Applications In Uv Sensingmentioning

confidence: 99%

“…High photocatalytic activity of ZnO and TiO 2 nanostructures have led to applications such as the degradation of water pollutant dyes such as rhodamine B, [ 247,248 ] methyl orange (MO), [ 249–251 ] methylene blue [ 240,246 ] and Congo red [ 242,252 ] and self‐cleaning fabrics. [ 253,254 ]…”

Section: Photocatalysis Related Applications In Uv Sensingmentioning

confidence: 99%

UV Photochromism in Transition Metal Oxides and Hybrid Materials

Kayani

Kuriakose

Monshipouri

et al. 2021

Small

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“…Up to now, mussel shells have been utilized to remove heavy metals in mine soil [30]. Meanwhile, they can be employed to improve the photocatalytic performance of catalysts [31][32][33]. Consequently, constructing Bi 2 WO 6 /calcined mussel shell composites should be an appealing strategy for the promotion of photocatalytic performance towards organic pollutants.…”

Section: Introductionmentioning

confidence: 99%

Facile Preparation of a Novel Bi2WO6/Calcined Mussel Shell Composite Photocatalyst with Enhanced Photocatalytic Performance

Wang

Liu

et al. 2020

Catalysts

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The exploration of cost-effective and highly efficient photocatalysts is still a great challenge. In this work, a cost-effective and highly active Bi2WO6/calcined mussel shell (CMS/BWO) composite photocatalyst was prepared by a facile solvothermal route, in which Bi2WO6 nanosheets were tightly, evenly, and vertically grown on waste calcined mussel shells (CMS). Multiple techniques are adopted to characterize the phases, morphology, and chemical properties of the as-fabricated catalysts. In contrast to the stacked Bi2WO6, CMS/BWO has numerous exposed edges and open transfer pathways, which can create more open space and reactive sites for photocatalytic reactions. Such favorable characteristics enable CMS/BWO to efficiently degrade organic pollutants (e.g., rhodamine B (RhB), methylene blue (MB), tetracycline hydrochloride (TC)) under visible light. Moreover, the generation of reactive species during the photocatalytic process is also examined by trapping experiments, disclosing the pivotal role of photo-generated holes (h+) and hydroxyl radicals (•OH) in the photo-degradation of pollutants. Above all, this study not only provides an efficient photocatalyst for environmental remediation, but it also opens up new possibilities for waste mussel shell reutilization.

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“…However, the photocatalyst itself remains unchanged during the treatment process. Moreover, the process does not require any consumable chemicals, and landfill is not required for sludge disposal because no residue of the original material remains [ 9 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

“…This activity attained a value of 93% for the NCPs prepared using the sol-gel method that is followed by the hydrothermal treatment and a value of 82% for the NCPs prepared using the hydrothermal route only [ 13 ]. Some other Gr-based binary NCPs, such as the GO/TiO 2 hydrogel [ 12 ], TiO 2 -doped calcined mussel shell [ 11 ], Gr/SnO 2 [ 15 ], Gr/ZnO [ 21 ], ZnO-decorated GO [ 22 ], Gr/CeO 2 [ 14 ], and Bi 2 MoO 6 /rGO aerogel NCPs [ 9 ] were evaluated for the photocatalytic degradation of MB under visible light illumination. Moreover, ternary composites, such as rGO/Fe 3 O 4 /TiO 2 [ 3 ], Fe 2 O 3 /Gr/CuO [ 5 ], GO/mesoporous TiO 2 /Au [ 10 ], and MoO 3 /Fe 2 O 3 /rGO NCPs [ 1 ] were investigated.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Properties of Graphene/Gold and Graphene Oxide/Gold Nanocomposites Synthesized by Pulsed Laser Induced Photolysis

et al. 2020

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Graphene (Gr)/gold (Au) and graphene-oxide (GO)/Au nanocomposites (NCPs) were synthesized by performing pulsed-laser-induced photolysis (PLIP) on hydrogen peroxide and chloroauric acid (HAuCl4) that coexisted with Gr or GO in an aqueous solution. A 3-month-long aqueous solution stability was observed in the NCPs synthesized without using surfactants and additional processing. The synthesized NCPs were characterized using absorption spectroscopy, transmission electron microscopy, Raman spectroscopy, energy dispersive spectroscopy, and X-ray diffraction to prove the existence of hybrid Gr/Au or GO/Au NCPs. The synthesized NCPs were further evaluated using the photocatalytic reaction of methylene blue (MB), a synthetic dye, under UV radiation, visible light (central wavelength of 470 nm), and full spectrum of solar light. Both Gr/Au and GO/Au NCPs exhibited photocatalytic degradation of MB under solar light illumination with removal efficiencies of 92.1% and 94.5%, respectively.

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Photocatalytic degradation of methylene blue by the use of titanium-doped Calcined Mussel Shells CMS/TiO2

Cited by 32 publications

References 21 publications

UV Photochromism in Transition Metal Oxides and Hybrid Materials

UV Photochromism in Transition Metal Oxides and Hybrid Materials

Facile Preparation of a Novel Bi2WO6/Calcined Mussel Shell Composite Photocatalyst with Enhanced Photocatalytic Performance

Photocatalytic Properties of Graphene/Gold and Graphene Oxide/Gold Nanocomposites Synthesized by Pulsed Laser Induced Photolysis

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