Multi material exploitation in manufacturing photocatalytic semiconductor glass fibers for pollution suppression

• Grant number: 17/16826-6
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: January 01, 2018
• End date: December 31, 2020
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Inorganic Chemistry
• Principal Investigator: Younes Messaddeq
• Grantee: Joy Sankar Roy
• Host Institution: Instituto de Química (IQ). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil
• Associated research grant: 15/22828-6 - Pushing the boundaries of optical fibers: from photonics to optogenetics and environmental monitoring, AP.SPEC
• Associated scholarship(s): 19/12212-9 - Fabrication of an optical fiber monolithic reactor for photocatalytic wastewater treatment, BE.EP.PD

Abstract

During this project, significant research efforts will be devoted to the development and characterization of novel semiconducting metal-oxide glasses with bandgap energies in the range of 2.8 to 3.4 eV, and to the process development of multi-material glass fiber composites. This development will be achieved through new materials, particularly WO3-containing, Sb2O3-containing, and ZnO containing glass compounds, and careful design to impart fiber UV-guiding and electrical-bias functionalities. The key to achieving the multi-material approach in making semiconducting photocatalytic glass fibers is to select glass compounds exhibiting the same viscosity, thermal expansion and surface energy to form intimate and durable interfaces during fiber drawing process. With these guidelines, UV-guiding, electrical-bias, and catalytic functionalities could be integrated into a same fiber by combining at least three different, but thermodynamically compatible, material compounds into the same fiber. For instance, the catalytic functionalities of the fibers can be enabled with a semiconducting WO3-Sb2O3-ZnO -containing glass compound exhibiting an electronic bandgap energy of Eg > 2.8 eV matching the oxidation potential of HO*. Fiber photocatalytic testing will be implemented using a wide variety of UV light sources, including 355 nm tripled Nd:YAG lasers, UV LEDs, and concentrated solar light, through the utilization of facilities and equipment available at UNESP. The UV-guiding semiconducting glass fibers will be immersed into tainted waste waters (such as solvent containing waters) and the efficiency of photocatalytic effect will be tested against classical Fenton photocatalysis process benchmarks.

Scientific publications

(9)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

ROY, JOY SANKAR; MESSADDEQ, YOUNES. Photoluminescence study of Eu3+ doped zinc-tungsten-antimonite glasses for red LED applications. Journal of Luminescence, v. 228, p. 4-pg., 2020-12-01. (19/12212-9, 15/22828-6, 17/16826-6)

ROY, JOY SANKAR. Comment on the paper "The optical properties of quantum dots in anisotropic media" by Singh et al., J. Mol. Liq. 241 (2017) 1009-1012. JOURNAL OF MOLECULAR LIQUIDS, v. 262, p. 1-pg., 2018-07-15. (17/16826-6)

ROY, JOY SANKAR. Comment to the article "Analysis of photoluminescence, UV absorbance, optical band gap and threshold voltage of TiO2 nanoparticles dispersed in high birefringence nematic liquid crystal towards its application in display and photovoltaic devices" [J. Lumin. 192 (2017) 33-39]. Journal of Luminescence, v. 203, p. 1-pg., 2018-11-01. (17/16826-6)

ROY, JOY SANKAR; MESSADDEQ, YOUNES; RIBEIRO, SIDNEY J. L.. Formation and optical properties of new glasses within Sb2O3-WO3-ZnO ternary system. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, v. 30, n. 18, SI, p. 16798-16805, SEP 2019. (15/22828-6, 17/16826-6)

ROY, JOY SANKAR; DUGAS, GABRIEL; MORENCY, STEEVE; MESSADDEQ, YOUNES. Rapid degradation of Rhodamine B using enhanced photocatalytic activity of MoS2 nanoflowers under concentrated sunlight irradiation. PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, v. 120, JUN 2020. (15/22828-6, 17/16826-6)

ROY, JOY SANKAR; DUGAS, GABRIEL; MORENCY, STEEVE; RIBEIRO, SIDNEY J. L.; MESSADDEQ, YOUNES. Enhanced photocatalytic activity of silver vanadate nanobelts in concentrated sunlight delivered through optical fiber bundle coupled with solar concentrator. SN APPLIED SCIENCES, v. 2, n. 2, FEB 2020. (15/22828-6, 17/16826-6)

ROY, JOY SANKAR; MORENCY, STEEVE; DUGAS, GABRIEL; MESSADDEQ, YOUNES. Development of an extremely concentrated solar energy delivery system using silica optical fiber bundle for deployment of solar energy: Daylighting to photocatalytic wastewater treatment. Solar Energy, v. 214, p. 93-100, JAN 15 2021. (19/12212-9, 17/16826-6, 15/22828-6)

ROY, JOY SANKAR. Comment on "Preparation, molecular structure, vibrational and photoluminescence study of a novel compound based chlorocadmate (II) material" by Lassoued et al. J. Mol. Struct. 1165 (2018) 42-50. Journal of Molecular Structure, v. 1177, p. 1-pg., 2019-02-05. (17/16826-6)

ROY, JOY SANKAR; MESSADDEQ, YOUNES; RIBEIRO, SIDNEY J. L.. Formation and optical properties of new glasses within Sb2O3-WO3-ZnO ternary system. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, v. 30, n. 18, p. 8-pg., 2019-09-01. (15/22828-6, 17/16826-6)