Low viscosity, stable TiO2 nano-fluid for oxidative photo-degradation of methylene blue

¹Nano-chemistry Laboratory, Department of Applied Chemistry, Defence Institute of Advanced Technology (DIAT-DU), DRDO, Govt. of India, Pune 411025, India

²High Energy Materials Research Laboratory (HEMRL), Pune, India

Adv. Mater. Lett., 2017, 8 (4), pp 506-517

DOI: 10.5185/amlett.2017.6960

Publication Date (Web): Mar 15, 2017

Copyright © IAAM-VBRI Press

E-mail: pawankhanna2002@yahoo.co.in

Abstract

The present article highlights a simple and effective method for preparation of nano-fluid (NF) by employing long carbon chain fatty acid, PVP and ethylene glycol stabilized anatase phase TiO₂. The so-prepared nano-fluid (0.5 wt. %) was employed for advanced oxidative photo-degradation of MB with different concentrations (1-5 mL) under short (254 nm) and long UV (365 nm) irradiation against various concentrations (5, 15, 25 ppm).  The maximum degradation efficiency observed was 88% and 71% under short and long UV irradiation respectively. The photocatalytic degradation of the MB was also studied by reaction kinetics.  Initially, titania nanoparticles (NPs) were synthesized and characterized using various advanced tools such as UV-Visible, FTIR, Raman spectroscopy, BET, XRD, SEM/EDAX, TEM etc. for its size, surface area and morphological understanding.

Keywords

Anatase TiO₂ nanoparticles, TiO₂ nano-fluid, photo-catalysis, reaction kinetics, UV irradiation.