Preparation of Ti4O7/h‐BN self‐supported ceramic photoelectrode and its photoelectrocatalytic performance for water purification DOI
Shanshan Li, Yanan Gong,

Md Azharul Hossain

et al.

Asia-Pacific Journal of Chemical Engineering, Journal Year: 2024, Volume and Issue: 19(4)

Published: April 2, 2024

Abstract The construction of high‐efficiency self‐supported ceramic photoelectrode based on ideal semiconductor materials is essential for achieving effective degradation pollutants by photoelectrocatalysis (PEC) technology. Herein, a Ti 4 O 7 /h‐BN composite with unique microstructure was fabricated step‐by‐step calcination process and used in PEC water pollution remediation. activity could be enhanced introducing hexagonal boron nitride (h‐BN) nanoparticles the surface. most optimized exhibited decolorization rate active brilliant blue KN‐R at about 97.79% 30 min. activities remain stable during five cycles. excellent photoelectrocatalytic performance attributed to low Tafel slope, charge transfer resistance, large electrochemical area, photo‐generated carrier separation efficiency. A type‐II heterojunction formed between h‐BN, which caused more generation dominant species •O 2− h + . This work provided mature synthesis strategy photoelectrodes practical application prospects achieve superior purification.

Language: Английский

Zinc oxide@citric acid-modified graphitic carbon nitride nanocomposites for adsorption and photocatalytic degradation of perfluorooctanoic acid DOI Creative Commons
Amir Hossein Navidpour, Javad Safaei, Md Abu Hasan Johir

et al.

Advanced Composites and Hybrid Materials, Journal Year: 2024, Volume and Issue: 7(2)

Published: March 8, 2024

Abstract Perfluorooctanoic acid (PFOA) is a highly persistent organic pollutant of global concern. A novel nanocomposite composed ZnO nanoparticles and citric acid-modified g-C 3 N 4 was synthesized by ball milling process. The more efficient than pure ball-milled for PFOA elimination under visible light irradiation. optimal hybrid photocatalyst, produced the addition 5 wt% , demonstrated significantly better performance removal UV irradiation, with apparent rate constants 0.468 h −1 0.097 respectively. peroxymonosulfate (0.53 g L ) increased removal, clarifying crucial effect sulfate radicals on photodegradation. In comparison, not effective even peroxymonosulfate. Further experiments dark conditions identified surface adsorption photocatalyst as key process in total removal. summary, ZnO@citric graphitic carbon nitride nanocomposites due to combined action from photodegradation, dominating mechanism.

Language: Английский

Citations

20
Photocatalytic Degradation of Pharmaceutical Residues from Water and Sewage Effluent Using Different TiO2 Nanomaterials DOI Creative Commons
Amir Hossein Navidpour, Mohammad Boshir Ahmed, John L. Zhou

et al.

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(2), P. 135 - 135

Published: Jan. 6, 2024

Pharmaceuticals are widely used and often discharged without metabolism into the aquatic systems. The photocatalytic degradation of pharmaceutical compounds propranolol, mebeverine, carbamazepine was studied using different titanium dioxide nanostructures suspended in water under UV UV-visible irradiation. Among three photocatalysts, most effective by Degussa P25 TiO

Language: Английский

Citations

10
Immobilization of TiO2 and ZnO by facile surface engineering methods to improve semiconductor performance in photocatalytic wastewater treatment: A review DOI Creative Commons
Amir Hossein Navidpour, Bentuo Xu, Mohammad Boshir Ahmed

et al.

Materials Science in Semiconductor Processing, Journal Year: 2024, Volume and Issue: 179, P. 108518 - 108518

Published: May 15, 2024

Photocatalysis is widely researched in water and wastewater treatment processes owing to its unique capacity the potential mineralization of organic pollutants. Suspended nanoparticles provide high specific surface area, but their practical application has been very limited due drawbacks such as catalyst agglomeration during difficulty reuse after treatment. It therefore paramount importance immobilize catalysts realize continuous photocatalysis operations towards commercial scale, engineering provides an ideal strategy overcome problems associated with using suspended nanoparticles. Of different semiconductors used for photocatalytic degradation pollutants, TiO2 considered a benchmark photocatalyst ZnO alternative. Hence, scope this research review several methods including physical vapor deposition, dip coating, spin spray electrophoretic deposition immobilization ZnO. Overall, promising successful photocatalysts, sintering particularly recommended improve adhesion strength as-deposited films, expediting applications through deposition.

Language: Английский

Citations

10
Application of machine learning models to improve the prediction of pesticide photodegradation in water by ZnO-based photocatalysts DOI Creative Commons
Amir Dashti, Amir Hossein Navidpour, Farid Amirkhani

et al.

Chemosphere, Journal Year: 2024, Volume and Issue: 362, P. 142792 - 142792

Published: July 5, 2024

Pesticide pollution has been posing a significant risk to human and ecosystems, photocatalysis is widely applied for the degradation of pesticides. Machine learning (ML) emerges as powerful method modeling complex water treatment processes. For first time, this study developed novel ML models that improved estimation photocatalytic various pesticides using ZnO-based photocatalysts. The input parameters encompassed source light, mass proportion dopants Zn, initial pesticide concentration (C0), pH solution, catalyst dosage irradiation time. Additionally, physicochemical properties such molecular weight pesticides, well solubility both were considered. Notably, numerical data extracted from literature via relevant tables (directly) or graphs (indirectly) web-based tool WebPlotDigitizer. Four including multi-layer perceptron artificial neural network (MLP-ANN), particle swarm optimization-adaptive neuro fuzzy inference system (PSO-ANFIS), radial basis function (RBF), coupled simulated annealing-least squares support vector machine (CSA-LSSVM) developed. In comparison, RBF showed best accuracy among all models, with highest determination coefficient (R2) 0.978 average absolute relative deviation (AARD) 4.80%. model was effective in estimating except 2-chlorophenol, triclopyr lambda-cyhalothrin, where CSA-LSSVM demonstrated superior performance. Dichlorvos completely degraded by ZnO photocatalyst under visible light. sensitivity analysis relevancy factor exhibited light time most important influencing positively negatively, respectively. new provide predicting wastewater treatment, which will reduce photochemical experiments promote sustainable development.

Language: Английский

Citations

9
Photoelectrocatalytic Degradation of Ofloxacin by ZnO-rGO:N Composite Material: Kinetics, Mechanism, and Degradation Pathways DOI
Shutong Chen, Xiaosan Song, Xiaosan Song

et al.

Materials Research Bulletin, Journal Year: 2025, Volume and Issue: unknown, P. 113324 - 113324

Published: Jan. 1, 2025

Language: Английский

Citations

0
Exploring Solar Energy Solutions for Per‐ and Polyfluoroalkyl Substances Degradation: Advancements and Future Directions in Photocatalytic Processes DOI Creative Commons
Simone Bertucci, Paola Lova

Solar RRL, Journal Year: 2024, Volume and Issue: 8(9)

Published: March 14, 2024

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

Language: Английский

Citations

2
Preparation of Ti4O7/h‐BN self‐supported ceramic photoelectrode and its photoelectrocatalytic performance for water purification DOI
Shanshan Li, Yanan Gong,

Md Azharul Hossain

et al.

Asia-Pacific Journal of Chemical Engineering, Journal Year: 2024, Volume and Issue: 19(4)

Published: April 2, 2024

Abstract The construction of high‐efficiency self‐supported ceramic photoelectrode based on ideal semiconductor materials is essential for achieving effective degradation pollutants by photoelectrocatalysis (PEC) technology. Herein, a Ti 4 O 7 /h‐BN composite with unique microstructure was fabricated step‐by‐step calcination process and used in PEC water pollution remediation. activity could be enhanced introducing hexagonal boron nitride (h‐BN) nanoparticles the surface. most optimized exhibited decolorization rate active brilliant blue KN‐R at about 97.79% 30 min. activities remain stable during five cycles. excellent photoelectrocatalytic performance attributed to low Tafel slope, charge transfer resistance, large electrochemical area, photo‐generated carrier separation efficiency. A type‐II heterojunction formed between h‐BN, which caused more generation dominant species •O 2− h + . This work provided mature synthesis strategy photoelectrodes practical application prospects achieve superior purification.

Language: Английский

Citations

1