Enhanced photocatalytic activity of Ag–ZnO hybrid plasmonic nanostructures prepared by a facile wet chemical method

• Sini Kuriakose,
• Vandana Choudhary,
• Biswarup Satpati and
• Satyabrata Mohapatra

Beilstein J. Nanotechnol. 2014, 5, 639–650, doi:10.3762/bjnano.5.75

• ) were used as the starting materials for the synthesis of ZnO nanostructures. Silver nitrate (AgNO3, Spectrochem, India) and trisodium citrate (Na3C6H5O7, CDH, India) were used for the photodeposition of Ag nanoparticles onto ZnO nanostructures. Methylene blue (MB, SRL India) was used as dye for

• continuously stirred overnight. Silver nitrate of concentrations varying from 0.1 to 2 mM was added into these solutions under stirring for 30 min in the dark. The [Ag+]/[citrate] concentration ratios in these solutions were chosen to be 1:1 and 1:10 for different AgNO3 concentrations. Photoreduction of Ag

In vitro toxicity and bioimaging studies of gold nanorods formulations coated with biofunctional thiol-PEG molecules and Pluronic block copolymers

• Tianxun Gong,
• Douglas Goh,
• Malini Olivo and
• Ken-Tye Yong

Beilstein J. Nanotechnol. 2014, 5, 546–553, doi:10.3762/bjnano.5.64

• have minimal cytotoxicity and they can be used for long term in vitro and in vivo imaging study. Experimental Materials: Hydrogen tetrachloroaurate(III) trihyrate (HAuCl4·3H2O), cetylmethylammonium bromide (CTAB), sodium borohydride (NaBH4), silver nitrate (AgNO3), L-ascorbic acid, trisodium citrate

One pot synthesis of silver nanoparticles using a cyclodextrin containing polymer as reductant and stabilizer

• Arkadius Maciollek and
• Helmut Ritter

Beilstein J. Nanotechnol. 2014, 5, 380–385, doi:10.3762/bjnano.5.44

• using silver nitrate and a copolymer 1 from N-isopropylacrylamide (NIPAM) and mono-(1H-triazolylmethyl)-2-methylacryl-β-cyclodextrin acting as reductant and stabilizer without using any additional reducing agent is reported. The reduction was carried out in aqueous solution under pH neutral conditions

• at room temperature. The results of dynamic light scattering analysis and transmission electron microscopy show adjustable particle sizes from 30–100 nm, due to variation of silver nitrate concentration, the polymeric reducing and stabilisation agent concentration or reaction time. The spherical

• -β-cyclodextrin [20] as reduction and steric stabilization agent without any additional reduction agent or energy source. Silver nitrate has been reduced under pH neutral conditions at room temperature. In this green one pot synthesis neither commonly used toxic reduction agent nor additional energy