Mechanism of growth of colloidal silver nanoparticles stabilized by polyvinyl pyrrolidone in γ-irradiated silver nitrate solution

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

“…A similar result was also observed by Temgire and Joshi using PVA as stabiliser [26]. Our result on the effect of PVP molecular weight on the particles size was controversial in the light of the results reported by Shin et al [19]. The reason was still unknown.…”

“…In addition, they explained that the reason larger particles size resulted using PVP with high molecular weight was due to interaction with more silver ions per polymer molecule. During irradiation, there were more silver ions in close proximity within a PVP and this resulted in final silver nanoparticles of larger size [19]. According to our results, such an explanation was inadequate due to the fact that PVP with higher molecular weight can effectively prevent agglomeration of clusters or primary nanoparticles to form larger size.…”

“…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.…”

“…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.…”

“…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. Li et al [21] prepared silver nanoparticles by -irradiation and chemical reduction with citrate in order to compare both methods.…”