Degradation of aqueous ketoprofen by heterogeneous photocatalysis using Bi2S3/TiO2–Montmorillonite nanocomposites under simulated solar irradiation
Source abstract
Abstract
[Abstract] The photocatalytic degradation of Ketoprofen (KP), 2-(3-benzoylphenyl)-propionic acid was studied under near UV–Vis irradiation (NUV-Vis) using supported photocatalysts. Bi2S3/TiO2-montmorillonite (Bi2S3/TiO2-Mt) photocatalysts were synthesized using a two- step ion exchange and impregnation method, and characterized using different techniques: Fourier transform infrared spectra (FTIR), X-ray fluorescence (XRF), X-ray diffraction (XRD), UV–Vis diffuse reflectance spectroscopy (UV–Vis DRS) and photo-electrochemistry. Successful intercalation of TiO2 and Bi2S3 in the montmorillonite (Mt) was carried out, and the corresponding energy diagram for the Bi2S3/TiO2 heterojunction has been proposed. The resulting Bi2S3/TiO2-Mt nanocomposites were able to degrade KP under NUV–Vis irradiation. KP photodegradation was monitored by HPLC. The kinetics of photocatalytic transformation followed the Langmuir-Hinshelwood kinetic model. Pseudo-first-order kinetics adequately fitted the experimental data (t½ca. 17 min at pH 11, t½ca. 44 min at pH 3. 0.5 g·L−1 Bi2S3/TiO2 (25/75)-Mt nanocomposite). Factors affecting the kinetics of the process, such as the different Bi2S3/TiO2 ratio and initial pH solution have been discussed. KP photoproducts were identified using HPLC-MS, and the corresponding reaction mechanism has been proposed. Photodegradation of KP over Bi2S3/TiO2-Mt nanocomposites under NUV-Vis irradiation starts with the decarboxylation of KP and subsequent hydroxylation by HO• and oxidation by HO• and other reactive oxygen species (ROS) leads to the formation of photoproducts. TiO2 and Bi2S3 intercalated in the montmorillonite are cheap and efficient nanocomposites for the abatement of persistent organic pollutants (POP), such as KP, using NUV-Vis light.
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Research context
OpenAlex topics: Advanced Photocatalysis Techniques · TiO2 Photocatalysis and Solar Cells · Pharmaceutical and Antibiotic Environmental Impacts
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (56)
Show source-provided references
1. Determination of diclofenac sodium, flufenamic acid, indomethacin and ketoprofen by LC-APCI-MS10.1016/S0731-7085(00)00444-1 ↗
2. Photostability testing using online reactor HPLC hyphenation and mass spectrometric compound identification illustrated by ketoprofen as model compound10.1016/j.jpba.2017.07.006 ↗
3. Enhanced activity of clinoptilolite-supported hybridized PbS–CdS semiconductors for the photocatalytic degradation of a mixture of tetracycline and cephalexin aqueous solution10.1016/j.molcata.2015.07.017 ↗
4. Photosensitivity to ketoprofen, mechanisms and pharmacoepidemiological data10.2165/00002018-200022050-00002 ↗
5. Bi2S3/TiO2 and CdS/TiO2 heterojunctions as an available configuration for photocatalytic degradation of organic pollutant10.1016/j.jphotochem.2004.02.006 ↗
6. Effect of alkaline-doped TiO2 on photocatalytic efficiency10.1016/j.jphotochem.2003.12.001 ↗
7. Photocatalytic activity of Cu2O/TiO2, Bi2O3/TiO2 and ZnMn2O4/TiO2 heterojunctions10.1016/j.cattod.2005.03.038 ↗
8. UV–vis versus visible degradation of Acid Orange II in a coupled CdS/TiO2 semiconductors suspension10.1016/j.jphotochem.2006.03.025 ↗
9. Cu2S/TiO2 heterojunction applied to visible light Orange II degradation10.1016/j.jphotochem.2012.08.013 ↗
10. Photosensitizing drugs containing the benzophenone chromophore10.1016/S1011-1344(98)00062-1 ↗
11. Synthesis, characterization and photocatalytic activity of CdS–montmorillonite nanocomposites10.1016/j.clay.2013.01.011 ↗
12. CuAlO2/TiO2 heterojunction applied to visible light H2 production10.1016/j.jphotochem.2006.08.013 ↗
13. Improvement of eosin visible light degradation using PbS-sensititized TiO210.1016/j.jphotochem.2007.08.008 ↗
14. Visible light CrO42− reduction using the new CuAlO2/CdS hetero-system10.1016/j.jhazmat.2012.03.011 ↗
15. Reaction pathways and mechanisms of photodegradation of pesticides10.1016/S1011-1344(02)00277-4 ↗
16. Photocatalyzed degradation/abatement of endocrine disruptors10.1016/j.cogsc.2017.06.008 ↗
17. Preparation of TiO2-pillared montmorillonite as photocatalyst part I. Microwave calcination, characterisation, and adsorption of a textile azo dye10.1016/j.clay.2008.12.010 ↗
18. Preparation of TiO2-pillared montmorillonite as photocatalyst Part II Photocatalytic degradation of a textile azo dye10.1016/j.clay.2009.04.002 ↗
19. Simultaneous HPLC determination of ketoprofen and its degradation products in the presence of preservatives in pharmaceuticals10.1016/j.jpba.2004.07.018 ↗
20. Occurrence, fate and effects of pharmaceutical substances in the environment-a review10.1016/S0045-6535(97)00354-8 ↗
21. Heterogeneous photocatalysis: fundamentals and applications to the removal of various types of aqueous pollutants10.1016/S0920-5861(99)00107-8 ↗
22. The removal of 4-chlorophenol and dichloroacetic acid in water using Ti-, Zr-and Ti/Zr-pillared bentonites as photocatalyst10.3844/ajassp.2005.1136.1140 ↗
23. Preparation of CdS nanowires and Bi2S3 nanorods by extraction–solvothermal method10.1016/j.matlet.2005.12.024 ↗
24. Oxidation of pharmaceuticals during ozonation and advanced oxidation processes10.1021/es025896h ↗
25. Removal of 2-chlorophenol from water by adsorption combined with TiO2 photocatalysis10.1016/S0926-3373(02)00101-7 ↗
26. Ketoprofen removal by O3 and O3/UV processes: Kinetics, transformation products and ecotoxicity10.1016/j.scitotenv.2013.10.119 ↗
27. Visible light induced sonophotocatalytic degradation of reactive red dye 198 using dye sensitized10.1016/j.ultsonch.2006.09.015 ↗
28. Synthesis and characterization of Al-pillared and cationic surfactant modified Al-pillared Algerian bentonite10.1016/S0927-6513(96)00079-X ↗
29. Synthesis and characterization of TiO2–Montmorillonite/Polythiophene-SDS nanocomposites: Application in the sonophotocatalytic degradation of rhodamine 6G10.1016/j.clay.2013.06.005 ↗
30. TiO2-assisted photocatalytic degradation of azo dyes in aqueous solution: kinetic and mechanistic investigations: a review10.1016/j.apcatb.2003.11.010 ↗
31. Application of complementary mass spectrometric techniques to the identification of ketoprofen phototransformation products10.1002/jms.1906 ↗
32. Degradation of emerging contaminants from water under natural sunlight: the effect of season, pH, humic acids and nitrate and identification of photodegradation by-products10.1016/j.chemosphere.2015.07.033 ↗
33. Chemical actinometry (IUPAC Technical Report)10.1351/pac200476122105 ↗
34. Structural and Optical Properties of Sintered CdSx Se1−x Films10.1016/S0022-3697(98)00035-3 ↗
35. Photodegradation kinetics, transformation, and toxicity prediction of ketoprofen, carprofen, and diclofenac acid in aqueous solutions10.1002/etc.3915 ↗
36. Photocatalytic degradation of phenol in water on as-prepared and surface modified TiO2 nanoparticles10.1016/j.cattod.2015.03.048 ↗
37. White-rot fungus-mediated degradation of the analgesic ketoprofen and identification of intermediates by HPLC–DAD–MS and NMR10.1016/j.chemosphere.2009.10.009 ↗
38. Transient Intermediates in the Laser Flash Photolysis of Ketoprofen in Aqueous Solutions: Unusual Photochemistry for the Benzophenone Chromophore10.1021/ja970818t ↗
39. Mechanism of degradation of ketoprofen by heterogeneous photocatalysis in aqueous solution10.1016/j.apcatb.2013.05.018 ↗
40. Photodegradation of Carbamazepine, Ibuprofen, Ketoprofen and 17α-Ethinylestradiol in Fresh and Seawater10.1007/s11270-008-9765-1 ↗
41. Mechanism of photoinduced decomposition of ketoprofen10.1021/jm060697k ↗
42. Determination of free radicals generated from light exposed ketoprofen10.1016/j.jphotochem.2005.03.015 ↗
43. Physical Chemistry of Semiconductor − Liquid Interfaces10.1021/jp953720e ↗
44. Analysis and removal of emerging contaminants in wastewater and drinking water10.1016/S0165-9936(03)01105-1 ↗
45. Liquid chromatography–tandem mass spectrometry for the analysis of pharmaceutical residues in environmental samples: a review10.1016/j.chroma.2004.10.110 ↗
46. Ti-montmorillonite as photocatalyst to remove 4-chlorophenol in water and methanol in air10.1007/s10311-004-0090-7 ↗
47. Kinetics of the chemical oxidation of the pharmaceuticals primidone, ketoprofen, and diatrizoate in ultrapure and natural waters10.1021/ie801762p ↗
48. S-, N- and C-doped titanium dioxide nanoparticles: synthesis, characterization and redox charge transfer study
49. Santaballa · 2006
50. Phototransformation of ibuprofen and ketoprofen in aqueous solutions10.1016/j.chemosphere.2011.05.012 ↗
51. Removal of pharmaceuticals during drinking water treatment10.1021/es015757k ↗
52. Valdés · Chem. Phys. Lett. · 2015 · 640 · 1610.1016/j.cplett.2015.10.005 ↗
53. Study of the simulated sunlight photolysis mechanism of ketoprofen: the role of superoxide anion radicals, transformation byproducts, and ecotoxicity assessment10.1039/C7EM00111H ↗
54. Third-order nonlinear optical properties of Bi2S3 nanocrystals doped in sodium borosilicate glass studied with Z-scan technique10.1016/j.materresbull.2010.12.015 ↗
55. Photocatalytic discoloration of Methyl Orange on innovative parylene – TiO2 flexible thin films under simulated sunlight10.1016/j.apcatb.2007.10.006 ↗
56. Facile synthesis and electrochemical application of surface-modified Bi2S3 urchin-like nano-spheres at room temperature10.1016/j.matlet.2008.02.019 ↗