2021年1月15日 · The concentration of CTAB was adjusted to produce site-specifically grown NCs with different types of exposed facets (with the other reaction conditions the same as in the case of the corner/edge-selective growth of NCs). Ten mM CTAB was used to synthesize grown NCs bound by high-energy surfaces, while 100 mM CTAB was used for low-energy surfaces.

2022年11月23日 · We have studied facet selectivity of cetyltrimethyl ammonium bromide (CTAB) surfactants of varying alkyl tail lengths (C 17 TAB and C 10 TAB) during their adsorption on a spherical gold metal nanoparticle (MNP) using umbrella sampling and well-tempered metadynamics techniques in molecular simulations. We show that the surfactants strongly ...

2020年1月29日 · Cetyltrimethylammonium bromide (CTAB) on the surface of ZIF-8 was used as a model system. Infrared spectroscopic analysis and molecular dynamics simulations reveal different coordination environments for Zn nodes on {100} and {110} facets, resulting in different CTAB adsorption.

2023年4月1日 · Section 3 summarizes the achievements of the authors in the synthesis of polyhedral Au NPs using CTAB or CTAC, especially Au NPs with high-index facets and Au-based core-shell (CS) NPs with high-index facets. The performance of polyhedral Au NPs and polyhedral CS Au@Pd NPs for application in electrocatalysis and SERS is also discussed.

2009年9月30日 · In this study, we describe the CTAB-assisted synthesis of variously shaped Au nanocrystals in SDS aqueous solution at relatively low temperature without the use of reducing agents or templates. Then, we clarified the relationship between the CTAB/SDS mixing ratio and the morphological development of Au nanoparticles.

2018年2月1日 · Bi 2 MoO 6 nanosheets with exposed {010} facets were selectively synthesized through hydrothermal method by adjusting the pH value in the presence of cetyltrimethyl ammonium bromide (CTAB) as the templates.

2022年9月19日 · For instance, the use of CTAB or CTAC affects the facet stabilization, thereby impacting the thermodynamics of the system. However, the nature of the halide also impacts the reduction potential of gold ions, as they are in the form of AuX 4 − .

2022年6月15日 · Discovering new methods and principles in the inequivalent growth of equivalent facets is of great significance for going beyond symmetrical nanocrystals and for out-of-box exploration. In this work, we demonstrate that a middle ground exists between the traditional weak ligands and the strong ligands with unusual growth modes.

2017年1月6日 · Abstract: Anisotropic growth of gold nanorods is often attributed to the adsorption of surfactant cetyltrimethyl ammonium bromide (CTAB) bilayer on gold facets. In this work, we performed DFT (density function theory) calculations to investigate possible binding sites of Br ions on Au (100), Au (110), and Au (111) facets.

2012年10月21日 · Here we propose a methodology to measure the 3D atomic structure of free-standing nanoparticles, which we apply to characterize the surface facets of Au nanorods. This methodology is applicable to...