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Liao G, Qing X, Lai X, Liang Z, Jiang S, Xie Z, Fang J, Lan B, Chen W, Wang J, Li L. Efficient treatment of surfactant containing wastewater by photocatalytic ozonation with BiPO 4 nanorods. CHEMOSPHERE 2024; 346:140594. [PMID: 37914050 DOI: 10.1016/j.chemosphere.2023.140594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 09/09/2023] [Accepted: 10/29/2023] [Indexed: 11/03/2023]
Abstract
In this study, monoclinic BiPO4 nanorods were fabricated by one-pot solvothermal method. Its catalytic capability in photocatalytic ozonation process was tested by degradation and mineralization of sodium dodecyl benzene sulfonate (SDBS) solution. The results demonstrated that the TOC removal rate was dramatically improved to 90.0% at 75 min for UV/O3/BiPO4 process, which was 4.9 and 3.8 times more than that of UV/BiPO4 and O3. Moreover, the pseudo-first-order kinetic constant (0.337 min-1) and mineralization rate (90.0%) for SDBS degradation using BiPO4 in UV/O3 process were 1.6 and 1.3 times as great as that of conventional TiO2 photocatalyst (0.206 min-1, 67.3%). The influence of BiPO4 dosage, O3 concentration initial pH and coexisted ions on SDBS degradation in UV/O3/BiPO4 process were also investigated. The outcome of quenching studies illustrated both ·OH and h+ contributed prominently to SDBS degradation in UV/O3/BiPO4 process, implying that high valence band position of BiPO4 could promote the synergism between photocatalysis and ozonation. The degradation pathway of SBDS was proposed by combination of intermediates analysis and DFT calculation. Real carwash wastewater was chosen as typical surfactant containing wastewater to explore the practical application of UV/O3/BiPO4 technology. During 30 min, COD and LAS removal efficiency reached 59.7% and 70.6%, respectively. The quality indices of effluent could meet the requirements for reuse of carwash water in Water Quality Standard for Urban Miscellaneous Use in China. Energy consumption in the process was calculated as 13.9 kW h m-3, which was about 3.6 and 2.2 times less than that of UV/BiPO4 and O3 process, respectively. The results suggest that UV/O3/BiPO4 system has an application potential for surfactant containing wastewater treatment or recycle.
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Affiliation(s)
- Gaozu Liao
- School of Environment, South China Normal University, Guangdong Provincial Engineering Technology Research Center for Drinking Water Safety, Guangdong Provincial Key Lab of Functional Materials for Environmental Protection, Guangzhou, 510006, China.
| | - Xiaojiao Qing
- School of Environment, South China Normal University, Guangdong Provincial Engineering Technology Research Center for Drinking Water Safety, Guangdong Provincial Key Lab of Functional Materials for Environmental Protection, Guangzhou, 510006, China
| | - Xin Lai
- School of Environment, South China Normal University, Guangdong Provincial Engineering Technology Research Center for Drinking Water Safety, Guangdong Provincial Key Lab of Functional Materials for Environmental Protection, Guangzhou, 510006, China
| | - Ziyi Liang
- School of Environment, South China Normal University, Guangdong Provincial Engineering Technology Research Center for Drinking Water Safety, Guangdong Provincial Key Lab of Functional Materials for Environmental Protection, Guangzhou, 510006, China
| | - Shiqi Jiang
- School of Environment, South China Normal University, Guangdong Provincial Engineering Technology Research Center for Drinking Water Safety, Guangdong Provincial Key Lab of Functional Materials for Environmental Protection, Guangzhou, 510006, China
| | - Zhuomin Xie
- School of Environment, South China Normal University, Guangdong Provincial Engineering Technology Research Center for Drinking Water Safety, Guangdong Provincial Key Lab of Functional Materials for Environmental Protection, Guangzhou, 510006, China
| | - Jinhai Fang
- School of Environment, South China Normal University, Guangdong Provincial Engineering Technology Research Center for Drinking Water Safety, Guangdong Provincial Key Lab of Functional Materials for Environmental Protection, Guangzhou, 510006, China
| | - Bingyan Lan
- School of Environment, South China Normal University, Guangdong Provincial Engineering Technology Research Center for Drinking Water Safety, Guangdong Provincial Key Lab of Functional Materials for Environmental Protection, Guangzhou, 510006, China
| | - Weirui Chen
- School of Environment, South China Normal University, Guangdong Provincial Engineering Technology Research Center for Drinking Water Safety, Guangdong Provincial Key Lab of Functional Materials for Environmental Protection, Guangzhou, 510006, China
| | - Jing Wang
- School of Environment, South China Normal University, Guangdong Provincial Engineering Technology Research Center for Drinking Water Safety, Guangdong Provincial Key Lab of Functional Materials for Environmental Protection, Guangzhou, 510006, China
| | - Laisheng Li
- School of Environment, South China Normal University, Guangdong Provincial Engineering Technology Research Center for Drinking Water Safety, Guangdong Provincial Key Lab of Functional Materials for Environmental Protection, Guangzhou, 510006, China
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Balseviciute A, Martí-Calatayud MC, Pérez-Herranz V, Mestre S, García-Gabaldón M. Novel Sb-doped SnO 2 ceramic anode coated with a photoactive BiPO 4 layer for the photoelectrochemical degradation of an emerging pollutant. CHEMOSPHERE 2023; 335:139173. [PMID: 37301515 DOI: 10.1016/j.chemosphere.2023.139173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 06/06/2023] [Accepted: 06/07/2023] [Indexed: 06/12/2023]
Abstract
In the present work, a study about the electrochemical and photoelectrochemical degradation of an emerging pollutant using an Sb-doped SnO2 anode coated with a photocatalytic layer of BiPO4 has been performed. The electrochemical characterization of the material was carried out by means of linear sweep voltammetry, light-pulsed chronoamperometry and electrochemical impedance spectroscopy. These studies confirmed that the material is photoactive at intermediate potential values (around 2.5 V), and that the charge transfer resistance decreases in the presence of light. A positive effect of the illuminated area on the degradation degree of norfloxacin was observed: at 15.50 mA cm-2, the degradation rate was 83.37% in the absence of light, 92.24% with an illuminated area of 5.7 cm2, and it increased up to 98.82% with an illuminated area of 11.4 cm2. The kinetics of the process were evaluated, and the by-products of the degradation were identified by ion chromatography and HPLC. In the case of the mineralization degree, the effect of light is less significant, especially at higher current densities. The specific energy consumption of the process was lower in the photoelectrochemical experiments as compared to the experiments in dark conditions. At intermediate current densities (15.50 mA cm-2) a decrease in energy consumption of 53% was achieved by illuminating the electrode.
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Affiliation(s)
- A Balseviciute
- IEC Group, Instituto de Seguridad Industrial, Radiofísica y Medioambiental, Universitat Politècnica de València, Camí de Vera, S/n, 46022, València, Spain
| | - M C Martí-Calatayud
- IEC Group, Instituto de Seguridad Industrial, Radiofísica y Medioambiental, Universitat Politècnica de València, Camí de Vera, S/n, 46022, València, Spain
| | - V Pérez-Herranz
- IEC Group, Instituto de Seguridad Industrial, Radiofísica y Medioambiental, Universitat Politècnica de València, Camí de Vera, S/n, 46022, València, Spain
| | - S Mestre
- University Institute of Ceramic Technology, Chemical Engineering Department, Universitat Jaume I, Castellón, Spain
| | - M García-Gabaldón
- IEC Group, Instituto de Seguridad Industrial, Radiofísica y Medioambiental, Universitat Politècnica de València, Camí de Vera, S/n, 46022, València, Spain.
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Lotfi S, El Ouardi M, Ait Ahsaine H, Madigou V, BaQais A, Assani A, Saadi M, Arab M. Low-temperature synthesis, characterization and photocatalytic properties of lanthanum vanadate LaVO 4. Heliyon 2023; 9:e17255. [PMID: 37389049 PMCID: PMC10300335 DOI: 10.1016/j.heliyon.2023.e17255] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 06/12/2023] [Accepted: 06/12/2023] [Indexed: 07/01/2023] Open
Abstract
In this study, we have successfully prepared tetragonal lanthanum vanadate LaVO4 nanoparticles by a facile co-precipitation method at room temperature. The obtained materials were characterized using different structural and micro-structural techniques such as the characterization by X-ray diffraction (XRD), UV-Vis diffuse reflectance spectrum (DRS), transmission electron microscopy (TEM), and Raman spectrometry. The obtained structure is crystallized in single tetragonal phase with pin-like nanostructure. A main optical transition with bandgap energy of 3.26 eV is evidenced, and the average lifetime of charges carriers was found to be 1 ns Furthermore, the photoluminescence occurs in the visible light range. The photocatalytic activity was evaluated by the photocatalytic degradation of methylene blue (MB) with initial concentration of 10 mg L-1. The result indicates that LaVO4 particles showed a best photocatalytic activity of 98.2% degradation for methylene blue solution after irradiation of 90 min under visible light. Furthermore, the photocatalytic mechanism and reusability were studied.
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Affiliation(s)
- S. Lotfi
- Laboratoire de chimie appliquée des matériaux, faculté des sciences, Mohammed V University in Rabat, Morocco
| | - M. El Ouardi
- Laboratoire de chimie appliquée des matériaux, faculté des sciences, Mohammed V University in Rabat, Morocco
- Institut Matériaux Microélectronique et Nanoscience du Provence IM2NP, UMR, CNRS, Université du Sud Toulon-Var, France
| | - H. Ait Ahsaine
- Laboratoire de chimie appliquée des matériaux, faculté des sciences, Mohammed V University in Rabat, Morocco
| | - V. Madigou
- Institut Matériaux Microélectronique et Nanoscience du Provence IM2NP, UMR, CNRS, Université du Sud Toulon-Var, France
| | - A. BaQais
- Department of Chemistry, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - A. Assani
- Laboratoire de chimie appliquée des matériaux, faculté des sciences, Mohammed V University in Rabat, Morocco
| | - M. Saadi
- Laboratoire de chimie appliquée des matériaux, faculté des sciences, Mohammed V University in Rabat, Morocco
| | - M. Arab
- Institut Matériaux Microélectronique et Nanoscience du Provence IM2NP, UMR, CNRS, Université du Sud Toulon-Var, France
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Pulsed-Laser Induced Photolysis of Synthesizing Magnetic Fe3O4 Nanoparticles for Visible-Light Photocatalysis. Catalysts 2022. [DOI: 10.3390/catal12111459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Our report is the first example describing the successful synthesis of magnetic Fe3O4 nanoparticles (NPs), for which we used pulsed-laser induced photolysis (PLIP). Compared with the previous method of using pulsed-laser ablation of a target, or strong energy of pulsed-laser light to decompose precursors in generating a solvated-ion reaction, the PLIP method used here is dependent on hydrogen peroxide (H2O2) to generate a hydrolysis reaction. Energy-dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD) were used to demonstrate the Fe3O4 crystalline structure of the synthesized NPs. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images revealed that the average size of the NPs was about 20–50 nm. Regarding their magnetic characteristics, the synthesized NPs exhibited a saturation magnetization of 5.62 emu/g, remanence of 3.82 emu/g, and coercive force of 49.8 Oe. The photocatalytic experiments confirmed that the synthesized magnetic Fe3O4 NPs have visible light-degradation effects based on their ability to photocatalytically degrade methylene blue (MB). The MB degradation efficiency was 60–80% under white-light exposure for 180 min. This study presents a new route for synthesizing magnetic Fe3O4 NPs for their potential use in photocatalysis.
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