The invention discloses a production method of
boron doped carbon quantum dots. The production method sequentially comprises the following steps: adding
hydrotalcite which is sieved by a 20-50 mesh
sieve to a
sodium tetramethylborate solution with the
mass percentage concentration of 0.1-1% according to a ratio of
sodium tetramethylborate to
hydrotalcite of 1-1.5 mol:1 g, stirring
hydrotalcite and the
sodium tetramethylborate solution in 60-70 DEG
C constant temperature water bath for 5-6 h,
ageing the obtained solution for 12-24 h, carrying out
solid-liquid separation, washing the above obtained precipitate with deionized water 2-3 times, and
drying the washed precipitate to obtain sodium tetramethylborate modified hydrotalcite; putting the sodium tetramethylborate modified hydrotalcite in a vacuum tubular furnace, heating the sodium tetramethylborate modified hydrotalcite under a vacuum condition to 400-600 DEG C, carrying out vacuum calcining for 2-4 h, and cooling the obtained calcined
powder to
room temperature; and adding the calcined
powder to a
hydrochloric acid solution with the
mass percentage concentration of 20-40% according to ratio of 10-15 mL:1 g, stirring the calcined
powder and the
hydrochloric acid solution for 3-4 h until hydrotalcite sheets are completely dissolved, and carrying out high speed
centrifuge in order to obtain the
boron doped carbon quantum dots. The method has the advantages of simple materials and mild conditions.