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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