Table 1.

Designed Conditions for the Synthesis of Different-Sized Silver Nanoparticles^a [60]

Particle size	Silver nitrate (mol dm− 3)	Sodium borohydride (mol dm− 3)	Trisodium citrate (mol dm− 3)	Volume of reactants (ml)	pH	Temp. (Ta-Tb) (°C)	Yield (%)	Particle conc.(particles per ml)
5	1.00 × 10−03	2.00 × 10− 03	4.28 × 10− 03	x48y2	10.5	60–90	78.2	1.03 × 1015
7	1.00 × 10−03	2.00 × 10− 03	3.55 × 10− 03	x48y2	10.5	60–90	67.4	3.31 × 1014
10	1.17 × 10−03	2.00 × 10− 03	2.00 × 10− 03	x48y2	10.5	60–90	82.3	1.53 × 1014
15	1.00 × 10−03	1.00 × 10− 03	1.06 × 10− 03	x48y2	10.5	60–90	77.9	3.49 × 1013
20	1.00 × 10−03	1.00 × 10− 03	3.55 × 10− 03	x48y2	10.5	60–90	~ 84	1.57 × 1013
30	4.00 × 10−03	1.00 × 10− 03	3.55 × 10− 03	x45y5	10.5	60–90	70.5	1.71 × 1013
50	1.22 × 10−03	5.00 × 10− 03	2.00 × 10− 03	x45y5	10.5	60–90	58.4	9.01 × 1011
63	2.00 × 10−03	5.00 × 10−03	3.54 × 10− 03	x40y10	10.5	60–90	~ 61	7.25 × 1011
85	2.00 × 10−03	5.00 × 10− 03	1.77 × 10− 03	x45y5	10.5	60–90	68.3	3.43 × 1011
100	2.00 × 10−03	5.00 × 10− 03	1.77 × 10− 03	x40y10	10.5	60–90	64.6	1.99 × 1011

^ax-total volume of NaBH₄ and TSC, y-volume of AgNO₃ added drop wise to x, T^a-first stage temperature, T^b-second stage temperature(°C)