A comprehensive investigation on the formation mechanism of gold nanoparticles (AuNPs) in colloidal mixture obtained from the reduction of chloroauric acid (HAuCl4) solution using a single reducing agent (sodium citrate; process-I), (tannic acid; process-II), and a combination of two reducing agents (sodium citrate plus tannic acid; process-III) is reported. The growth steps at different time i...

Abstract Surface functional groups have a strong influence on the deposition and final state of nanoparticles adsorbed to surface, role discussed by Professor Spencer in his work. This tribute explores formation hydroxyls, thiosulfates, sulfites sulfur atoms carbon (HOPG) surfaces their effect gold palladium from aqueous solutions. Hydroxyls formed ammonium hydroxide treatment identical behavio...

Abstract Background In the present study, medicinal plants were exclusively selected based on their significant anti-HIV and anticancer activities. The green synthesis of gold nanoparticles was carried out using 15 plant extracts reduction with chloroauric acid. study also focused a novel pharmacognostic approach over usage source. nanoparticle synthesized through possessed potential therapeuti...

We report an enhancement in the efficiency of organic solar cells via the incorporation of gold (Au) or silver (Ag) nanoparticles (NPs) in the hole-transporting buffer layer of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), which was formed on an indium tin oxide (ITO) surface by the spin-coating of PEDOT:PSS-Au or Ag NPs composite solution. The composite solution was synt...

A simple, sensitive and cost-effective method for the analysis of the mycotoxin aflatoxin B1 (AFB1) has been established based on controlled growth of immunogold. AFB1-BSA conjugate modified magnetic beads were employed as capture probe and anti-AFB1 antibody-coated gold colloids were used as detection probe for the immunological recognition of AFB1, as well as for signal transduction. The immu...

EXPERIMENTAL SECTION Materials and reagents Tetrabutyl titanate (TBOT), sodium dodecyl sulfate (SDS), sodium dodecyl benzene sulfonate (SDBS) and phosphoric acid (H3PO4) were from Nanjing Chemical Reagent Co., Ltd. (Nanjing, China). Human IgG (HIgG) (Ag), rabbit anti-human IgG (Ab1), and goat anti-human IgG (Ab2) were purchased from Beijing Biosynthesis Biotechnology Co., Ltd. (Beijing, China)....

The utility of carbon materials in applications as diverse as drug delivery and photocatalysis is often undermined by the complexity of their surface chemistry; different sources of carbon give rise to a varied mixture of functional groups and hence different properties. Considerable efforts have been made to identify specific groups at these surfaces and elucidate the complex interactions that...

Because of their unique stacked, cup-shaped, hollow compartments, nitrogen-doped carbon nanotube cups (NCNCs) have promising potential as nanoscale containers. Individual NCNCs are isolated from their stacked structure through acid oxidation and subsequent probe-tip sonication. The NCNCs are then effectively corked with gold nanoparticles (GNPs) by sodium citrate reduction with chloroauric acid...

There is a growing commercial attraction for nanoparticles because of their widespread feasibility in various fields instance electronics, textiles, chemistry, medicine, energy and catalysis. This investigation describes an environmentally benign, cheap, simple technique biosynthesis CCS-AuNPs utilizing the CCSL aqueous concentrate as covering reducing material. Various parameters influencing r...