Photocatalytic degradation of atrazine by an N-doped TiO2/polymer composite: catalytic efficiency and toxicity evaluation

Navarra, Wanda; Sacco, Olga; Daniel, Christophe; Venditto, Vincenzo; Vaiano, Vincenzo; Vignati, Davide A.L.; Bojic, Clément; Libralato, Giovanni; Lofrano, Giusy; Carotenuto, Maurizio

doi:10.1016/j.jece.2022.108167

Cited by 14 publications

(4 citation statements)

References 83 publications

(90 reference statements)

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“…For commercial TiO 2 , the SSA was about 50 m 2 /g, the typical value found for commercial P25 [ 29 ]. In contrast, the sPS/P25 aerogel had the typical aerogel values of sPS in δ-form [ 24 , 25 , 26 , 30 ], 250 m 2 /g.…”

Section: Resultsmentioning

confidence: 99%

Selective Photocatalytic Reduction of Nitrobenzene to Aniline Using TiO2 Embedded in sPS Aerogel

et al. 2023

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In recent years, aromatic substances have become the focus of environmental pollution-related concern due to their high stability and mutagenicity. In this regard, researchers have focused their attention on the development of photocatalytic processes to convert nitroaromatic compounds into aniline. In this work, the photocatalytic conversion of nitrobenzene (NB) to aniline (AN) was studied. The photocatalytic reaction was performed using commercial TiO2 (P25) and a photocatalytic aerogel, based on P25 embedded in syndiotactic polystyrene (sPS) aerogel (sPS/P25 aerogel) as photocatalysts. Different alcohols were used as hydrogen sources during the photocatalytic experiments. At the optimized operating conditions (photocatalysts dosage: 0.5 mg/L and 50% (v/v) EtOH%), an AN yield of over 99% was achieved. According to the results, this work could open avenues toward effective production of AN from NB using mild reaction conditions with sPS/P25 aerogel—in view of a possible scale-up of the photocatalytic process.

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Section: Resultsmentioning

confidence: 99%

Selective Photocatalytic Reduction of Nitrobenzene to Aniline Using TiO2 Embedded in sPS Aerogel

et al. 2023

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“…Some elements like N, C, S, B, P, I, and F as dopants are used to narrow the band gap energy and extend the recombination time of electrons and holes to improve the photocatalytic efficiency . Nitrogen, due to its similarity with oxygen in terms of ionic radius and 2p energy level, is commonly used as a modifying agent and replaces with oxygen in the photocatalytic lattice. − On the other hand, doping with carbon materials is an effective approach to change the optical properties of the photocatalysts and improve photocatalytic activity due to the electron transfer potential, light absorption, and physicochemical durability of carbons as dopants . Sulfur, the same as oxygen, is a VIA group element that has comparable physicochemical properties, but the ionic radius and electronegativity values of sulfur are different.…”

Section: Photocatalystsmentioning

confidence: 99%

A Review of Synthesis Methods, Modifications, and Mechanisms of ZnO/TiO₂-Based Photocatalysts for Photodegradation of Contaminants

Ghamarpoor,

Fallah,

Jamshidi

2024

ACS Omega

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The environment being surrounded by accumulated durable waste organic compounds has become a critical crisis for human societies. Generally, organic effluents of industrial plants released into the water source and air are removed by some physical and chemical processes. Utilizing photocatalysts as cost-effective, accessible, thermally/ mechanically stable, nontoxic, reusable, and powerful UV-absorber compounds creates a new gateway toward the removal of dissolved, suspended, and gaseous pollutants even in trace amounts. TiO 2 and ZnO are two prevalent photocatalysts in the field of removing contaminants from wastewater and air. Structural modification of the photocatalysts with metals, nonmetals, metal ions, and other semiconductors reduces the band gap energy and agglomeration and increases the affinity toward organic compounds in the composite structures to expand their usability on an industrial scale. This increases the extent of light absorbance and improves the photocatalytic efficiency. Selecting a suitable synthesis method is necessary to prepare a target photocatalyst with distinct properties such as high specific surface area, numerous surface functional groups, and an appropriate crystalline phase. In this Review, significant parameters for the synthesis and modification of TiO 2 -and ZnO-based photocatalysts are discussed in detail. Several proposed mechanistic routes according to photocatalytic composite structures are provided. Some electrochemical analyses using charge carrier trapping agents and delayed recombination help to plot mechanistic routes according to the direction of photoexcited species (electron−hole pairs) and design more effective photocatalytic processes in terms of cost-effective photocatalysts, saving time and increasing productivity.

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“…Our research group prepared s‐PS/N‐doped TiO 2 , s‐PS/ZnO and s‐PS/Fe 0 /ZnS monolithic composite aerogels by this method (Scheme 9), and successfully tested them in the photocatalytic degradation of different water pollutants [20c–f,83] …”

Section: Hydrophobic Polymer‐photocatalyst Compositesmentioning

confidence: 99%

Monolithic Porous Organic Polymer‐Photocatalyst Composites for Applications in Catalysis

Venditto,

Vaiano,

Sacco

2023

ChemCatChem

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This Review provides a perspective on porous organic polymer‐photocatalyst composites obtained by coupling semiconductors and hydrophilic/hydrophobic polymers which do not modify the properties of the embedded photocatalysts, but can influence the efficiency of the overall catalytic process. Particular attention has been given to polymer composites in the form of monolithic hydrogel/sponge/aerogels obtained by dissolving the polymer in a solvent, which contains the photocatalyst dispersed, inducing gelation or solidification of the solution and subsequently removing the solvent by a drying process. The photocatalytic applications discussed here cover H2 evolution from water splitting, CO2 reduction, and organic synthesis. Indeed, the main aim of this Review is to outline an alternative perspective to the highly studied environmental photocatalytic applications, highlighting the photoactive properties of these composites thanks to the incorporation of semiconductors in the 3D porous structure of organic polymers. Finally the challenges and potential advances associated with the use of porous organic polymer‐photocatalyst composites for future scientific research are outlined.

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Photocatalytic degradation of atrazine by an N-doped TiO2/polymer composite: catalytic efficiency and toxicity evaluation

Cited by 14 publications

References 83 publications

Selective Photocatalytic Reduction of Nitrobenzene to Aniline Using TiO2 Embedded in sPS Aerogel

Selective Photocatalytic Reduction of Nitrobenzene to Aniline Using TiO2 Embedded in sPS Aerogel

A Review of Synthesis Methods, Modifications, and Mechanisms of ZnO/TiO₂-Based Photocatalysts for Photodegradation of Contaminants

Monolithic Porous Organic Polymer‐Photocatalyst Composites for Applications in Catalysis

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Photocatalytic degradation of atrazine by an N-doped TiO2/polymer composite: catalytic efficiency and toxicity evaluation

Cited by 14 publications

References 83 publications

Selective Photocatalytic Reduction of Nitrobenzene to Aniline Using TiO2 Embedded in sPS Aerogel

Selective Photocatalytic Reduction of Nitrobenzene to Aniline Using TiO2 Embedded in sPS Aerogel

A Review of Synthesis Methods, Modifications, and Mechanisms of ZnO/TiO2-Based Photocatalysts for Photodegradation of Contaminants

Monolithic Porous Organic Polymer‐Photocatalyst Composites for Applications in Catalysis

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Product

Resources

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A Review of Synthesis Methods, Modifications, and Mechanisms of ZnO/TiO₂-Based Photocatalysts for Photodegradation of Contaminants