| A Preparative Approach of TiO2-ZrO2 Coating Using
Aquo-Based TiO2 Precursor Useful for Light Reflective
Application |
Suparna Bhattacharyya, Samar Kumar Medda* and Milan Kanti Naskar*
Pages : 227-233
DOI : 10.1080/0371750X.2021.2004237 |
| Abstract |
| TiO2-ZrO2 composite coating was prepared onto glass substrate via sol-gel dip-coating
technique using aquo-based titanium(IV) oxysulphate (TOS) and zirconium(IV)
n-propoxide (ZP) as the precursor sources of TiO2 and ZrO2, respectively followed by
calcination at 500oC/1 h. The samples were characterized by FTIR, Raman, UV/visible/
NIR, GIXRD, FESEM, TEM and XPS studies. The thickness and RI of the coating were
measured ellipsometrically. The coated glasses with coating thicknesses of 110±10
nm having refractive index of 1.95±0.05 were found to be uniform with good hardness
(3H) and adhesion properties. The bonding nature of Ti-O and Zr-O was confirmed
by FTIR and XPS analyses while Raman and GIXRD studies revealed the crystalline
nature of TiO2-ZrO2 composite. FESEM and TEM images revealed crack-free and spider
web-like nature of the deposited coating, respectively. The coated TiO2-ZrO2 composite
showed >20% of average reflection within wavelength range of 350-2500 nm. The
above nanocomposite based coated glass could be used as heat reflecting window
for efficient energy saving building components.
[Keywords: Nanocomposite, TiO2-ZrO2, Sol-gel, Reflective coating, Spectroscopy] |
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