أرسل هذا في رسالة قصيرة: DESIGN AND SYNTHESIS OF SPHERICAL NANOMATERIALS WITH 2D FEATURES FOR ENVIRONMENTAL CATALYSIS

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