Text this: Graphene-based membranes for H2 separation : recent progress and future perspective

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