Tio2 subsidized periodic mesoporous organosilicate (Tio2 @pmos) for facile photodegradation of methyl orange dye

Khurram Shahzad, Muhammad Imran Khan, Shabnam Shahida, Abdallah Shanableh, Noureddine Elboughdiri, Shazia Jabeen, Suryyia Manzoor, Shagufta Zafar, Hassan Ali, Abdul Waheed Rabbani, Javier Fernandez-Garcia, Aziz Ur Rehman

Research output: Indexed journal article Articlepeer-review

1 Citation (Scopus)

Abstract

In the present research, we reported TiO2 subsidized periodic mesoporous organosilicates (TiO2 @ PMOS) to reduce organic pollutants by photocatalytic degradation. TiO2 @PMOS was prepared by sim-ply direct adsorbing of TiO2 onto the PMOS and the PMOS organized on polysorbate 80 (C64 H124 O26 ) templates through co-condensation of sodium silicate (Na2 SiO3 ) and 3-methacryloxypropyltrime-thoxysilane (C10 H20 O5 Si). The resultant TiO2 @PMOS were characterized by analytical techniques and showed the successful synthesis of template-assisted PMOS which provided a platform for the preparation of TiO2 @PMOS which exhibited efficient surface area reflected in effective degradation of methyl orange (MO) as an organic azo dye and found 5.36% and 9.02% reduction under visible and UV-lights respectively. Moreover, the addition of H2 O2 with TiO2 @PMOS produced excessive hydroxyl free radicals which improved the degradation abilities up to 14.55% and 64.63% under visible and under UV-conditions. Results showed that PMOS provided well-support to TiO2 for photo-degrada-tion of MO due to the availability of long life-time to photo-generated electron–hole pairs. This profi-cient degradation is recognized to specific incapacitation of metallic nodes into the porous structure of PMOS. Moreover, TiO2 @PMOS were reused several times and showed 53% photocatalytic degradation of MO at optimized conditions. The small decrease in degradation competency of TiO2 @PMOS after several cycles also showed their durability to longtime for the reduction of organic pollutants.

Original languageEnglish
Pages (from-to)403-413
Number of pages11
JournalDesalination and Water Treatment
Volume223
DOIs
Publication statusPublished - May 2021
Externally publishedYes

Keywords

  • Azo dye
  • Methylene bridge
  • Periodic mesoporous silicates
  • Photocatalytic efficiency

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