Spectroscopic characterization and photocatalytic activity of vanadosilicate AM-6 towards the degradation of 2,5-Dichlorophenol

Sophia Streimer, Rumeysa Tekin, Joie Ann Mastandrea, Kayla Kilduff, Juliusz Warzywoda, Albert Sacco, Mariam N. Ismail

Research output: Contribution to journalArticle

Abstract

Vanadosilicate AM-6 crystals were synthesized using two methods – a structure-directing agent (SDA) method (i.e., non-porous), and a non-SDA method (i.e., porous). As a result, two types of AM-6 crystal products were obtained as evidenced by XRD, SEM, BET surface area measurements, and Raman and UV–vis spectroscopic analyses. These porous and non-porous AM-6 crystal products were used to determine the rate of photodegradation of a selected organic compound, 2,5 dichlorophenol (2,5-DCP). Both crystal products showed enhanced photocatalytic activity as compared to photolysis. Furthermore, the rate of degradation was found to be higher for the porous AM-6 products as compared to the non-porous crystals under UV light irradiation. This variance was attributed to differences in crystal quality. Raman and diffuse reflectance UV–vis spectroscopies showed more disorder along the ⋯V–O–V⋯ chains for porous AM-6 products. Thus, the higher photocatalytic degradation rate of 2,5-DCP is likely due to the presence of more accessible V[sbnd]OH sites.

Original languageEnglish
Article number112250
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume389
DOIs
StatePublished - Feb 15 2020

Keywords

  • 2,5-Dichlorophenol
  • AM-6
  • Photocatalysis
  • Vanadosilicate

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