γ-Irradiation-induced preparation of Ag and Au nanoparticles and their characterizations

Preparation of colloidal silver nanoparticles in poly(N-vinylpyrrolidone) by γ-irradiation

“…chemical [10][11][12][13], electrochemical [14] and photochemical reduction [15], ultrasound [16], microwave [17] gamma and electron irradiation [18][19][20][21][22][23][24]) for the synthesis of silver nanoparticles with different stabilisers have been developed.…”

“…The mechanism of the -ray irradiated method was described in the previous papers [18,21]. Briefly, Ag þ ions were reduced by hydrated electron (e À aq ) and hydrogen atom (H . )…”

“…CHOH) % À1.8 V NHE is not able to reduce free Ag þ ions in solution while they can reduce Ag þ ions in cluster Ag þ nþ1 due to E 0 ðAg þ =Ag 0 n Þ ¼ 0.78 V NHE [25]. Several studies to prepare silver nanoparticles by -irradiation method using polyvinyl pyrrolidone (PVP) as stabiliser were reported [19][20][21]. Shin et al [19] studied the mechanism of growth of colloidal silver nanoparticles stabilised by PVP in -irradiated silver nitrate (AgNO 3 ) solution.…”

“…Shin et al [19] studied the mechanism of growth of colloidal silver nanoparticles stabilised by PVP in -irradiated silver nitrate (AgNO 3 ) solution. Li et al [21] prepared silver nanoparticles by -irradiation and chemical reduction with citrate in order to compare both methods. According to their results, when the same starting AgNO 3 solution 1.0 Â 10 À3 M was used for the both methods, the particles size of silver (13 AE 2 nm) for -irradiation was smaller than that for chemical reduction (23 AE 6 nm).…”

Silver nanoparticle polymer composite based humidity sensor

“…The absorption spectrum of the colloid, shown in Figure 3, indicates the production of the nanoparticles where the presence of a plasmon absorption band at ~ 400 nm is characteristic of silver nanoparticles [30] .…”