Record Details

<strong>Microspheres based on black sand mineral as a photocatalyst for photocatalytic hydrogen production under UV light</strong>

Online Publishing @ NISCAIR

View Archive Info
 
 
Field Value
 
Authentication Code dc
 
Title Statement <strong>Microspheres based on black sand mineral as a photocatalyst for photocatalytic hydrogen production under UV light</strong>
 
Added Entry - Uncontrolled Name López Vásquez, Andrés Felipe ; Universidad Nacional de Colombia sede Manizales
Pataquiva-Mateus, Alis Yovana ; Universidad de Bogotá "Jorge Tadeo Lozano"
Delgado Niño, Pilar ; Universidad Libre sede Principal
 
Uncontrolled Index Term Chemical Engineering, Environmental Engineering
Hydrogen production, Ilmenite-black sand, Microspheres, Mineral-based photocatalyst, Response surface methodology.
 
Summary, etc. <p class="Body"><span>Frequently, black sand from coastal deposits is a magnetic ore with a complex structure that is composed principally by iron, titanium and silica oxides, and metals such as vanadium, chromium, nickel, strontium, etc. This material could be used in oxidation/reduction processes as a photocatalyst that is naturally doped. However, its low surface area and the mass transfer constraints caused by the cluster formation in bulk reaction due to its magnetic character, also limits the photocatalytic performance. Microspheres of black sand as starting material were prepared by a simple associating method with alginate-Na, and then calcined under oxidizing atmosphere at 1100°C. After, they were characterized by XRF spectroscopy, SEM/EDX, XRD diffraction, N<sub>2</sub> adsorption/desorption measurements, FT-IR spectroscopy, differential thermal thermogravimetric analysis, and UV-Visible spectrophotometry. The photocatalytic activity of the microspheres was evaluated for hydrogen production from EDTA solutions under UV light irradiation using the Response Surface Methodology (RSM), in order to determine the optimum conditions of the process. At calcination temperature, rounded microspheres with rough surface were prepared, and had an apparent different density from the raw material. Due to their buoyancy in the suspension, the contact between photons that entered into suspension and the as-prepared microspheres favors hydrogen production. Although the BET specific surface decreased owing to the sintering surface, the chemical composition was similar compared with the starting material. Finally, the RSM can be used to readily determine the optimal conditions for photocatalytic hydrogen production by as-prepared microspheres used as photocatalyst under UV light irradiation, based on black sand mineral. </span></p><br />
 
Publication, Distribution, Etc. Indian Journal of Engineering and Materials Sciences (IJEMS)
2020-08-06 16:02:52
 
Electronic Location and Access application/pdf
http://op.niscair.res.in/index.php/IJEMS/article/view/27578
 
Data Source Entry Indian Journal of Engineering and Materials Sciences (IJEMS); ##issue.vol## 27, ##issue.no## 2 (2020): IJEMS- April 2020
 
Language Note en
 
Terms Governing Use and Reproduction Note Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India © 2015. The Council of Scientific &amp; Industrial Research, New Delhi.