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Title: Studies on the performance of TiO{sub 2} thin films as protective layer to chlorophyll in Ocimum tenuiflorum L from UV radiation

Thin films of TiO{sub 2} were prepared on glass substrates using sol-gel dip coating technique. The films with 10 coatings were prepared and annealed at temperatures 350°C, 450°C and 550°C for 1 hour in muffle furnace. The annealed films were characterized by X – Ray diffraction (XRD), UV – Visible, AFM, Field Effect Scanning Electron Microscopy (FESEM) and EDAX studies. Chlorophyll has many health benefits due to its structural similarity to human blood and its good chelating ability. It has antimutagenic and anticarcinogenic properties. UV light impairs photosynthesis and reduces size, productivity, and quality in many of the crop plant species. Increased exposure of UV light reduces chlorophyll contents a, b and total content in plants. Titanium Dioxide (TiO{sub 2}) is a wide band gap semiconductor and efficient light harvester. TiO{sub 2} has strong UltraViolet (UV) light absorbing capability. Here, we have studied the performance of TiO{sub 2} thin films as a protective layer to the chlorophyll contents present in medicinal plant, tulsi (Ocimum tenuiflorum L) from UV radiation. The study reveals that crystallite size increases, transmittance decreases and chlorophyll contents increases with increase in annealing temperature. This study showed that TiO{sub 2} thin films are good absorber of UVmore » light and protect the chlorophyll contents a, b and total content in medicinal plants.« less
Authors:
 [1] ;  [2] ; ;  [3] ;  [4]
  1. Department of Physics, V.V.Vanniaperumal College for Women, Virudhunagar – 626001 (India)
  2. Department of Botany, V.V.Vanniaperumal College for Women, Virudhunagar – 626001 (India)
  3. Nanoscience Lab, Department of Physics, VHNSN College, Virudhunagar – 626001 (India)
  4. Department of Physics, The Madura College, Madurai - 625011 (India)
Publication Date:
OSTI Identifier:
22490415
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANNEALING; ATOMIC FORCE MICROSCOPY; BLOOD; CHELATING AGENTS; CHLOROPHYLL; COATINGS; CROPS; DIP COATING; GLASS; MEDICINAL PLANTS; PHOTOSYNTHESIS; SCANNING ELECTRON MICROSCOPY; SEMICONDUCTOR MATERIALS; SOL-GEL PROCESS; SUBSTRATES; THIN FILMS; TITANIUM OXIDES; ULTRAVIOLET RADIATION; VISIBLE RADIATION; X-RAY DIFFRACTION