A simple method for the synthesis of biochar nanodots using
Grinding: wood chip: 500: Bulk-biochar was ground into powders using a ball grinder, and passing through a 200-mesh sieve. 4: Not provided [9] Grinding: hardwood: 350: Bulk-biochar was added at a ratio of 10% with stainless steel ball, rotated at 500 rpm and 6 h in half cycle of pause time 15 min per 30 min interval. 260: Not provided [19]