أرسل هذا في رسالة قصيرة: Photocatalytic destruction of methyl orange by titanium dioxide powder synthesized by an oxalate co-precipitation method

 ______      ___      _____      ___      _  __  
|      \\   / _ \\   / ____||   / _ \\   | |/ // 
|  --  //  | / \ || / //---`'  / //\ \\  | ' //  
|  --  \\  | \_/ || \ \\___   |  ___  || | . \\  
|______//   \___//   \_____|| |_||  |_|| |_|\_\\ 
`------`    `---`     `----`  `-`   `-`  `-` --`