Photocatalytic behaviour of Ag3PO4, Fe3O4 and Ag3PO4/Fe3O4 heterojunction towards the removal of organic pollutants and Cr(VI) from water: Efficiency and light-corrosion deactivation

Bortolotto, Veronica; Djellabi, Ridha; Cerrato, G.; Michele, Alessandro Di; Bianchi, C.L.

doi:10.1016/j.inoche.2022.109516

Cited by 25 publications

(4 citation statements)

References 40 publications

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“…It is worth mentioning that, in general, the photocatalytic reduction of heavy metals accompanies the oxidation of organic molecules as hole scavengers (Djellabi et al 2021c ). The presence of hole scavenger molecules promotes the separation of electrons on the conduction band and limits the re-oxidation of produced metallic species (reverse reaction) by ROSs, as discussed in depth previously (Djellabi and Ghorab 2015 ; Djellabi et al 2020a , b , c ; Bortolotto et al 2022 ). Many physical and photonic mechanisms can occur in terms of the photocatalytic reduction of heavy metals by photocatalytic NPs/biomass-based composites.…”

Section: Photocatalytic Removal Of Heavy Metals From Watermentioning

confidence: 78%

“…13 a Ti-O-C bridge formed between TiO 2 nanoparticles and carbonaceous materials, reproduced with permission from Djellabi et al (2019a, b, c, d). FTIR spectra of TiO 2 -biomass samples (OP: olive pit-based biomass), reproduced with permission from Djellabi et al (2019a, b, c, d); copyright 2023 Elsevier discussed in depth previously (Djellabi and Ghorab 2015;Djellabi et al 2020a, b, c;Bortolotto et al 2022). Many physical and photonic mechanisms can occur in terms of the photocatalytic reduction of heavy metals by photocatalytic NPs/biomass-based composites.…”

Section: Photocatalytic Removal Of Heavy Metals From Watermentioning

confidence: 99%

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Valorization of lignocellulosic biomass into sustainable materials for adsorption and photocatalytic applications in water and air remediation

Mergbi,

Galloni,

Aboagye

et al. 2023

Environ Sci Pollut Res

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An exponential rise in global pollution and industrialization has led to significant economic and environmental problems due to the insufficient application of green technology for the chemical industry and energy production. Nowadays, the scientific and environmental/industrial communities push to apply new sustainable ways and/or materials for energy/environmental applications through the so-called circular (bio)economy. One of today’s hottest topics is primarily valorizing available lignocellulosic biomass wastes into valuable materials for energy or environmentally related applications. This review aims to discuss, from both the chemistry and mechanistic points of view, the recent finding reported on the valorization of biomass wastes into valuable carbon materials. The sorption mechanisms using carbon materials prepared from biomass wastes by emphasizing the relationship between the synthesis route or/and surface modification and the retention performance were discussed towards the removal of organic and heavy metal pollutants from water or air (NOx, CO2, VOCs, SO2, and Hg0). Photocatalytic nanoparticle–coated biomass-based carbon materials have proved to be successful composites for water remediation. The review discusses and simplifies the most raised interfacial, photonic, and physical mechanisms that might take place on the surface of these composites under light irradiation. Finally, the review examines the economic benefits and circular bioeconomy and the challenges of transferring this technology to more comprehensive applications.

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Section: Photocatalytic Removal Of Heavy Metals From Watermentioning

confidence: 78%

Section: Photocatalytic Removal Of Heavy Metals From Watermentioning

confidence: 99%

Valorization of lignocellulosic biomass into sustainable materials for adsorption and photocatalytic applications in water and air remediation

Mergbi,

Galloni,

Aboagye

et al. 2023

Environ Sci Pollut Res

View full text Add to dashboard Cite

show abstract

“…Using photocatalysts to degrade dye molecules is currently an effective method for treating such wastewater. From a materials design perspective, materials with photocatalytic properties, such as silver phosphate (Ag 3 PO 4 ), [39][40][41] can be loaded onto the surface of CA. Under light conditions, this setup allows interfacial evaporation to produce steam and catalytic degradation of dye molecules, making it a promising approach for purifying dye wastewater.…”

Section: Resultsmentioning

confidence: 99%

Cellulose‐Based Aerogels with Photocatalytic Function for Solar Steam Generation

Ma,

Jing,

et al. 2024

Energy Tech

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Solar steam generation is considered an efficient, renewable, and environmentally friendly technology for clean freshwater production, offering the potential to alleviate the growing global water scarcity issue. Herein, the commercial cellulose is used as raw material and water transport matrix, and silver phosphate particles are used as difunctional light‐absorbing matters and photocatalyst to prepare cellulose‐based composite material (silver‐plated cellulose aerogel [CAAg]). The resulting CAAg possesses superhydrophilicity, intrinsic network structure, high porosity (89.88%), and low thermal conductivity (0.091 W m−1 K−1). As a result, the CAAg exhibits an evaporation rate of nearly 1.55 kg m−2 h−1 in simulated seawater under a light intensity of 1 kW m−2. Furthermore, due to the excellent photocatalytic properties of silver phosphate particles, the CAAg can simultaneously achieve high degradation rates toward various dye molecules including methylene blue, rhodamine B, and methyl orange in water, making it show tremendous potential applications for clean freshwater production and organic wastewater treatment.

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“…Naturally, the oxidation of water molecules by positive holes or/and the reduction of oxygen by photogenerated electrons partially limit the recombination of charges. Material modification could decrease the recombination charges by building heterojunction systems [19,20], allowing the interfacial transfer of electrons and holes. Even though the separation of charges is maximized, the photocatalytic rate is mainly based on the interaction of the pollutants in water with these separated charges and produced reactive oxygen species (ROS).…”

Section: Introductionmentioning

confidence: 99%

Enhanced Photocatalytic Kinetics Using HDTMA Coated TiO2-Smectite Composite for the Oxidation of Diclofenac under Solar Light

et al. 2022

Self Cite

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Slow kinetics is one of the capital issues of photocatalytic technology because of its heterogeneous nature, which involves multi-step processes. Herein, we show that the simple modification of the sol-gel-based TiO2-smectite composite by hexadecyltrimethylammonium bromide (HDTMA) significantly boosts adsorption and photocatalytic efficient sol-gel-based light towards the removal of diclofenac from water. Three photocatalysts were prepared, including TiO2, TiO2-smectite, and HDTMA-TiO2-smectite. The materials were characterized to understand the surface interaction and crystal characteristics. In terms of photoactivity, it was found that the addition of HDTMA to TiO2-smectite improved the removal rate by twice. HDTMA changes the functional groups to TiO2-smectite composite allowing enhanced adsorption and photoactivity through the so-called Adsorb and Shuttle process. The recycling tests show that HDTMA-TiO2-smectite can be used up to four times with good performance. This modification approach could intensify the removal of pollutants from water instead of using complicated and costly techniques.

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Photocatalytic behaviour of Ag3PO4, Fe3O4 and Ag3PO4/Fe3O4 heterojunction towards the removal of organic pollutants and Cr(VI) from water: Efficiency and light-corrosion deactivation

Cited by 25 publications

References 40 publications

Valorization of lignocellulosic biomass into sustainable materials for adsorption and photocatalytic applications in water and air remediation

Valorization of lignocellulosic biomass into sustainable materials for adsorption and photocatalytic applications in water and air remediation

Cellulose‐Based Aerogels with Photocatalytic Function for Solar Steam Generation

Enhanced Photocatalytic Kinetics Using HDTMA Coated TiO2-Smectite Composite for the Oxidation of Diclofenac under Solar Light

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