Photocatalytic BiVO4-Cement Composites for Dye Degradation

Kumar, M. Krishna; Elqahtani, Zainab Mufarreh; Alrowaili, Z. A.; Al-Buriahi, M.S.; Kebaïli, Imen; Boukhris, Imed; Vaish, Rahul

doi:10.1007/s11664-023-10408-8

Cited by 3 publications

(1 citation statement)

References 92 publications

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“…Cement-based materials are not only commonly used as building materials, but also can be doped with photocatalysts for photodegrading organic pollutants in water. Kumar et al mixed BiVO 4 photocatalyst into Portland cement paste and coated it on the prepared concrete spheres for oxidative degradation of methylene blue with the degradation efficiency of 58% in 240 min under visible light 33 . He et al introduced a self-made photocatalyst into Portland cement for photocatalytic oxidation of methyl orange, and the degradation efficiency of methyl orange was approximately 50-65% under ultraviolet irradiation 34 .…”

Section: Introductionmentioning

confidence: 99%

Basic magnesium sulfate@TiO2 composite for efficient adsorption and photocatalytic degradation of 4-dodecylmorpholine in brine

Song,

Zhang,

et al. 2024

Sci Rep

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More than 70% of the potash fertilizer globally is produced by the froth flotation process, in which 4-dodecylmorpholine (DMP) serves as a reverse flotation agent. As the potash fertilizer production rapidly rises, the increased DMP levels in discharged brine pose a threat to the production of high-value chemicals. In this paper, composite particles of basic magnesium sulfate@TiO2 (BMS@TiO2) were prepared using a simple and mild loading method. These particles were utilized for the adsorption and photocatalytic degradation of DMP in brine. Compared with normal powdered materials, the granular BMS@TiO2 in this study can be easily separated from liquid, and the degradation intermediates will not enter the brine without causing secondary pollution. BMS@TiO2 consists of 5·1·7 phase (5Mg(OH)2·MgSO4·7H2O) whisker clusters embedding 2.3% TiO2. The adsorption equilibrium of DMP on BMS@TiO2 particles was achieved through hydrogen bonding and pore interception with the adsorption capacity of approximately 5 mg g−1 after 6 h. The photodegradation efficiency of DMP adsorbed on BMS@TiO2 reached about 92% within 16 h, which is compared with that of pure TiO2 nanoparticles. Additionally, excellent stability and recyclability of BMS@TiO2 were also observed in five cycle tests of adsorption and photocatalytic degradation of DMP, and the possible photocatalytic degradation pathways and mechanism of DMP are proposed following molecular electrostatic potential analysis. This work provides a sustainable and environmentally friendly approach for eliminating organic micropollutants from water environments.

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Section: Introductionmentioning

confidence: 99%

Basic magnesium sulfate@TiO2 composite for efficient adsorption and photocatalytic degradation of 4-dodecylmorpholine in brine

Song,

Zhang,

et al. 2024

Sci Rep

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Preparation and effects of calcining temperature and pH on the photocatalytic activity of BiVO4 microcrystal for degrading methylene blue

Cai,

Yang,

et al. 2024

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Basic magnesium sulfate@TiO2 composite for efficient adsorption and photocatalytic degradation of 4-dodecylmorpholine in brine

Song,

Zhang,

et al. 2024

Preprint

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More than 70% of the potash fertilizer globally is produced by the froth flotation process, in which 4-dodecylmorpholine (DMP) serves as a reverse flotation agent. As the potash fertilizer production rapidly rises, the increased DMP levels in discharged brine pose a threat to the production of high-value chemicals. In this paper, composite particles of basic magnesium sulfate@TiO2 (BMS@TiO2) were prepared using a simple and mild loading method. These particles were utilized for the adsorption and photocatalytic degradation of DMP in brine. Compared with normal powdered materials, the granular BMS@TiO2 in this study can be easily separated from liquid, and the degradation intermediates will not enter the brine without causing secondary pollution. BMS@TiO2 consists of 5·1·7 phase (5Mg(OH)2·MgSO4·7H2O) whisker clusters embedding 2.3% TiO2. The adsorption equilibrium of DMP on BMS@TiO2 particles was achieved through electrostatic attraction and pore interception with the adsorption capacity of approximately 5 mg·g-1 after 6 hours. The photodegradation efficiency of DMP adsorbed on BMS@TiO2 reached about 92% within 16 hours, which is compared with that of pure TiO2 nanoparticles. Additionally, excellent stability and recyclability of BMS@TiO2 were also observed in five cycle tests of adsorption and photocatalytic degradation of DMP, and the possible photocatalytic degradation pathways and mechanism of DMP are proposed following molecular electrostatic potential analysis. This work provides a sustainable and environmentally friendly approach for eliminating organic micropollutants from water environments.

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Photocatalytic BiVO4-Cement Composites for Dye Degradation

Cited by 3 publications

References 92 publications

Basic magnesium sulfate@TiO2 composite for efficient adsorption and photocatalytic degradation of 4-dodecylmorpholine in brine

Basic magnesium sulfate@TiO2 composite for efficient adsorption and photocatalytic degradation of 4-dodecylmorpholine in brine

Preparation and effects of calcining temperature and pH on the photocatalytic activity of BiVO4 microcrystal for degrading methylene blue

Basic magnesium sulfate@TiO2 composite for efficient adsorption and photocatalytic degradation of 4-dodecylmorpholine in brine

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