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  _  _    _    _      _____   __   __    _  _   
 | \| || | || | ||   / ___//  \ \\/ //  | \| || 
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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