Preparation of catalytically efficient precious metallic colloids by γ-irradiation and characterization

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

“…The synthesis of silver nanoparticles has attracted considerable interest due to their novel physicochemical properties and their potential applications in many fields such as medicine [1] (http://lifesilver.com/safety.html), textiles [2,3], sensors and detectors [4], catalysis [5], nanocomposites [6,7] as well as agriculture [8]. The antibacterial activity of silver-containing materials such as polyurethane foam can be used for water treatment [9].…”

Metal nanoparticles stabilized by cubic silsesquioxanes for catalytic hydrogenations

“…Therefore, various stabilizers used to avoid nanoparticle agglomeration at both the synthetic and catalytic stage have been extensively developed. Many polymers, such as poly (N-vinyl-2-pyrrolidone) [6][7][8][9][10], Carbowax-20 M [11], poly (N-isopropylacrylamide) [12,13], (3-aminopropyl) trimethoxysilane (APS) [14], (poly(acrylic acid) -b-polystyrene) 6 [15], sodium polyacrylate [16], dendrimers [17][18][19][20][21][22][23][24], and cubic silsesquioxane [25] have been applied as the stabilizers of nanoparticles. We have reported the preparation and catalysis of metal nanoparticle-cored dendrimers [23,24].…”

Organic–Inorganic Mesoporous Silica Nanotube Hybrid Anodic Alumina Membranes for Ultrafine Filtration of Noble Metal Nanoparticles

“…In addition, Ag NPs exhibit the surface plasmon resonance effect and strong bacterial resistance to antibiotics, making them ideal for biotechnological applications (Shrivastava et al, 2009). Ag NPs can be synthesized using various methods, such as chemical reduction (Pal et al, 2007), electrochemical (Santos et al, 2002), γ-radiation (Choi et al, 2005), laser ablation (Amendola et al, 2007), solvothermal (Yang et al, 2007), hydrothermal (Shen et al, 2011), photochemical (Henglein, 1998), and sonochemical (Salkar et al, 1999 (Dong et al, 2010). They realized that the formation of the triangular nanoprisms is dependent on the molar ratios of sodium borohydride and trisodium citrate used in the reactions, in which a balance between the precursor contributed to the formation of the small spherical particles.…”