External MOSFET to SW pin of Boost converter IC
No, you can't do that with this IC. It is current mode - meaning it relies on sensing the current going into the SW terminal to decide when to turn the internal FET switch off. If you use the external FET, that current sensing mechanism will fail.
If you want to use an external FET, you should use a controller IC designed for that purpose.
But generally external FETs are a bad idea, because they lack temperature limiting circuits. Only resort to them if you have to.
Final Note: It is a very bad idea to use ideas you find on google image search. Probably &gt;75% of the circuits on there either fail outright or have extremely poor performance. It's basically useless.