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  ______     ___                _____             
 /_   _//   / _ \\      ___    |  ___||   ____    
   | ||    | / \ ||    /   ||  | ||__    |    \\  
  _| ||    | \_/ ||   | [] ||  | ||__    | [] ||  
 /__//      \___//     \__ ||  |_____||  |  __//  
 `--`       `---`       -|_||  `-----`   |_|`-`   
                         `-`             `-`

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Text this: Photocatalytic degradation of methylene blue by Zn<inf>2</inf>SnO<inf>4</inf>-SnO<inf>2</inf>system under UV visible radiation