Synthesis of mesoporous Bi2O3/CeO2 microsphere for photocatalytic degradation of Orange II dye
Source abstract
Abstract
We report on the visible-light responsive porous assembly of Bi2O3/CeO2 microspheres, which were synthesized via a simple hydrothermal reaction between Bi(NO3)3·5H2O and Ce(NO3)3·6H2O in the presence of ethylene glycol and ethanol. Systematic structural (X-ray diffraction (XRD)), morphological (field emission scanning electron microscopy (FE-SEM) and transmission electron microscopic (TEM)), BET surface area and diffuse reflectance spectral (DRS) analyses were carried out to characterize the formed product. The effects of experimental parameters on the microstructural and morphological behavior of Bi2O3/CeO2 composites were discussed. The semiconductor material as obtained was evaluated as a heterogeneous photocatalyst for the photolytic degradation of an azo dye in water and the degradation was found to follow pseudo-first-order rate kinetics. The study compares the rate constants of the new hybrid catalyst to a pristine Bi2O3 and CeO2, which has excellent catalytic properties under visible light irradiation for the degradation of Orange II dye.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Catalytic Processes in Materials Science · Catalysis and Oxidation Reactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (27)
Show source-provided references
1. Environmental applications of semiconductor photocatalysis10.1021/cr00033a004 ↗
2. Photocatalysis on TiO2 surfaces – principles, mechanisms, and selected results10.1021/cr00035a013 ↗
3. Facile fabrication of hierarchical porous TiO2 hollow microspheres with high photocatalytic activity for water purification10.1016/j.apcatb.2011.03.027 ↗
4. Photocatalytic activity of zinc modified Bi2O310.1016/j.cplett.2009.10.087 ↗
5. Study on highly visible light active Bi2O3 loaded ordered mesoporous titania10.1016/j.apcatb.2009.12.001 ↗
6. Synthesis characterization, and activities of visible light-driven Bi2O3–TiO2 composite photo catalysts10.1016/j.jallcom.2010.03.151 ↗
7. Photocatalytic activity of Cu2O/TiO2, Bi2O3/TiO2 and ZnMn2O4/TiO2 heterojunctions10.1016/j.cattod.2005.03.038 ↗
8. CeO2–Bi2O3 nanocomposite: two step synthesis microstructure and photocatalytic activity10.1016/j.jnoncrysol.2009.04.003 ↗
9. Effective degradation of acid orange 10 by catalytic ozonation in the presence of Au-Bi2O3 nanoparticles10.1016/j.cej.2011.02.020 ↗
10. Enhanced photocatalytic activity of Ce3+-TiO2 for 2-mercaptobenzothiazole degradation in aqueous suspension for odor control10.1016/j.apcata.2005.02.025 ↗
11. Preparation of Cu2O/CeO2 heterojunction photocatalyst for the degradation of Acid Orange 7 under visible light irradiation10.1016/j.catcom.2011.01.027 ↗
12. Exploration of CeO2 nanoparticles as a chemi-sensor and photo-catalyst for environmental applications10.1016/j.scitotenv.2011.04.019 ↗
13. Synthesis and characterization of mesoporous TiO2 prepared via three different procedures in ethanol medium10.1016/j.materresbull.2012.11.108 ↗
14. Preparation of porous nitrogen-doped titanium dioxide microspheres and a study of their photocatalytic, antibacterial and electrochemical activities10.1016/j.materresbull.2012.09.031 ↗
15. Electronic structure of layered ferroelectric high-k titanate Pr2Ti2O710.1016/j.jssc.2012.02.033 ↗
16. Structure and micromorphology of titanium dioxide nanoporous microspheres formed in water solution10.1016/j.phpro.2012.01.017 ↗
17. Facile fabrication of Bi2O3/TiO2−xNx nanocomposites for excellent visible light driven photocatalytic hydrogen evolution10.1016/j.ijhydene.2010.11.104 ↗
18. Highly active and durable Bi2O3/TiO2 visible photocatalyst in flower-like spheres with surface-enriched Bi2O3 quantum dots10.1016/j.apcatb.2010.11.032 ↗
19. Preparation and growth mechanism of α-Bi2O3 crystal whiskers10.1016/j.proeng.2011.12.606 ↗
20. Microwave assisted rapid synthesis of Bi2O3 short nanorods10.1016/j.matlet.2009.08.022 ↗
21. Morphology-controllable synthesis and characterization of CeO2 nanocrystals10.1016/j.partic.2010.07.023 ↗
22. Eco-friendly and morphologically-controlled synthesis of porous CeO2 microstructure and its application in water purification10.1016/j.jcis.2010.04.076 ↗
23. Hydrothermal synthesis of CeO2 nano-particles10.1016/j.jmatprotec.2007.02.042 ↗
24. Surfactant-assisted preparation of hollow microspheres of mesoporous TiO210.1016/S0009-2614(03)00722-X ↗
25. Characterization of structural and surface properties of nanocrystalline TiO2–CeO2 mixed oxides by XRD, XPS, TPR, and TPD10.1021/jp8110309 ↗
26. Peroxomonosulphate, an efficient oxidant for the photocatalyzed degradation of a textile dye, acid red 8810.1016/j.solmat.2005.12.001 ↗
27. Photocatalytic degradation of Acid Red 88 using Au-TiO2 nanoparticles in aqueous solutions10.1016/j.watres.2008.09.027 ↗