Photocatalytic and photoelectrocatalytic degradation of perfluorooctanoic acid by immobilised ZnO nanoparticles using electrophoretic deposition

Navidpour, Amir Hossein; Safaei, Javad; Zhang, Guojin; Mojiri, Amin; Ni, Bing‐Jie; Huang, Zhenguo; Zhou, John L.

doi:10.1039/d3en00241a

Cited by 4 publications

(1 citation statement)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among the different AOPs, photocatalysis using semiconductors such as TiO 2 represents a clean technology which has been studied and is becoming popular for the degradation of pharmaceuticals [ 8 , 11 ]. Various metal oxides such as Ga 2 O 3 [ 12 ], ZnO [ 13 , 14 ], TiO 2 [ 15 , 16 , 17 ], and In 2 O 3 [ 18 ], polymeric materials such as g-C 3 N 4 [ 19 , 20 , 21 , 22 ], and spinel structures such as CuFe 2 O 4 [ 23 ] and ZnFe 2 O 4 [ 24 ] have been used in photocatalysis technology. Notably, TiO 2 is generally regarded as the benchmark photocatalyst [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Pharmaceutical Residues from Water and Sewage Effluent Using Different TiO2 Nanomaterials

Navidpour,

Ahmed,

Zhou

2024

Nanomaterials

Self Cite

View full text Add to dashboard Cite

Pharmaceuticals are widely used and often discharged without metabolism into the aquatic systems. The photocatalytic degradation of pharmaceutical compounds propranolol, mebeverine, and carbamazepine was studied using different titanium dioxide nanostructures suspended in water under UV and UV-visible irradiation. Among three different photocatalysts, the degradation was most effective by using Degussa P25 TiO2, followed by Hombikat UV100 and Aldrich TiO2. The photocatalytic performance was dependent on photocatalyst dosage, with an optimum concentration of 150 mg L−1. The natural aquatic colloids were shown to enhance the extent of photocatalysis, and the effect was correlated with their aromatic carbon content. In addition, the photocatalysis of pharmaceuticals was enhanced by the presence of nitrate, but inhibited by the presence of 2-propanol, indicating the importance of hydroxyl radicals. Under optimum conditions, the pharmaceuticals were rapidly degraded, with a half-life of 1.9 min, 2.1 min, and 3.2 min for propranolol, mebeverine, and carbamazepine, respectively. In treating sewage effluent samples, the photocatalytic rate constants for propranolol (0.28 min−1), mebeverine (0.21 min−1), and carbamazepine (0.15 min−1) were similar to those in water samples, demonstrating the potential of photocatalysis as a clean technology for the effective removal of pharmaceuticals from sewage effluent.

show abstract

Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Pharmaceutical Residues from Water and Sewage Effluent Using Different TiO2 Nanomaterials

Navidpour,

Ahmed,

Zhou

2024

Nanomaterials

Self Cite

View full text Add to dashboard Cite

show abstract

Preparation of Ti₄O₇/h‐BN self‐supported ceramic photoelectrode and its photoelectrocatalytic performance for water purification

Li,

Gong,

Hossain

et al. 2024

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

The construction of high‐efficiency self‐supported ceramic photoelectrode based on ideal semiconductor materials is essential for achieving effective degradation of pollutants by photoelectrocatalysis (PEC) technology. Herein, a Ti4O7/h‐BN composite ceramic photoelectrode with a unique microstructure was fabricated by a step‐by‐step calcination process and used in PEC water pollution remediation. The PEC activity of Ti4O7 ceramic photoelectrode could be enhanced by introducing hexagonal boron nitride (h‐BN) nanoparticles on the surface. The most optimized Ti4O7/h‐BN photoelectrode exhibited the decolorization rate of active brilliant blue KN‐R at about 97.79% in 30 min. The PEC activities could remain stable during five degradation cycles. The excellent photoelectrocatalytic performance of Ti4O7/h‐BN ceramic photoelectrode could be attributed to the low Tafel slope, low charge transfer resistance, large electrochemical active area, and excellent photo‐generated carrier separation efficiency. A type‐II heterojunction was formed between the Ti4O7 and h‐BN, which caused more effective carrier separation and enhanced the generation of dominant active species •O2− and h+. This work provided a mature synthesis strategy of Ti4O7/h‐BN self‐supported ceramic photoelectrodes with excellent practical application prospects to achieve superior PEC performance for water purification.

show abstract

Exploring Solar Energy Solutions for Per‐ and Polyfluoroalkyl Substances Degradation: Advancements and Future Directions in Photocatalytic Processes

Bertucci,

Lova

2024

Solar RRL

View full text Add to dashboard Cite

Concerns about per‐ and polyfluoroalkyl substances (PFAS) pollution are escalating globally due to the discovery of their widespread environmental distribution, accompanied by their migration, bioaccumulation, and toxic potential for plants, animals, and humans. Several technologies have been developed for their remediation since standard water treatment methods often fail. However, these approaches require large energy consumption and, at times, exacerbate environmental issues. In this context, photocatalytic degradation holds promise as a reliable technological solution for PFAS mineralization. However, to date, it primarily relies on the degradation of perfluorooctanoic acid using high energy gap semiconductor oxides that necessitate high‐power artificial ultraviolet sources for excitation and, at times, the use of strong chemical oxidants. This review examines chemical‐free catalysts and mechanisms recently documented in the literature to outline a roadmap for the realization of solar‐driven mineralization of all PFAS compounds. To this end, we delve into conventional wide bandgap semiconductor oxide and explore strategies to extend their spectral absorbance while enhancing charge separation with a focus on the proposed degradation pathways, that are fundamental to designing technologically relevant photodegradation systems.This article is protected by copyright. All rights reserved.

show abstract

Photocatalytic and photoelectrocatalytic degradation of perfluorooctanoic acid by immobilised ZnO nanoparticles using electrophoretic deposition

Abstract: This research represented the first study of perfluorooctanoic acid (PFOA) decomposition using immobilized ZnO nanoparticles by electrophoretic deposition in photocatalysis and photoelectrocatalysis. Overall, considering process performance, application under visible light...

Cited by 4 publications

References 44 publications

Photocatalytic Degradation of Pharmaceutical Residues from Water and Sewage Effluent Using Different TiO2 Nanomaterials

Photocatalytic Degradation of Pharmaceutical Residues from Water and Sewage Effluent Using Different TiO2 Nanomaterials

Preparation of Ti₄O₇/h‐BN self‐supported ceramic photoelectrode and its photoelectrocatalytic performance for water purification

Exploring Solar Energy Solutions for Per‐ and Polyfluoroalkyl Substances Degradation: Advancements and Future Directions in Photocatalytic Processes

Contact Info

Product

Resources

About

Photocatalytic and photoelectrocatalytic degradation of perfluorooctanoic acid by immobilised ZnO nanoparticles using electrophoretic deposition

Abstract: This research represented the first study of perfluorooctanoic acid (PFOA) decomposition using immobilized ZnO nanoparticles by electrophoretic deposition in photocatalysis and photoelectrocatalysis. Overall, considering process performance, application under visible light...

Cited by 4 publications

References 44 publications

Photocatalytic Degradation of Pharmaceutical Residues from Water and Sewage Effluent Using Different TiO2 Nanomaterials

Photocatalytic Degradation of Pharmaceutical Residues from Water and Sewage Effluent Using Different TiO2 Nanomaterials

Preparation of Ti4O7/h‐BN self‐supported ceramic photoelectrode and its photoelectrocatalytic performance for water purification

Exploring Solar Energy Solutions for Per‐ and Polyfluoroalkyl Substances Degradation: Advancements and Future Directions in Photocatalytic Processes

Contact Info

Product

Resources

About

Preparation of Ti₄O₇/h‐BN self‐supported ceramic photoelectrode and its photoelectrocatalytic performance for water purification