Harshana,
Usually Alkaline batteries are NOT rechargeable. There are special Alkaline batteries which can be recharged and they have word "rechargeable" written on body of the battery. And these batteries are difficult to find.
Also your camera seems not supporting battery charging from USB or the 3.3V DC power connecter. You can use NiMH rechargeable batteries with your camera but they need to be charged separately from the camera. Samsung recommends to use 2500 mAh NiMH battery. Further if you use Ni-MH battery make sure you set the camera settings correctly (settings->battery type->Ni-MH).
-Sadeepa