Palladium metal nanoparticle size control through ion paired structures of [PdCl4]2− with protonated PDMAEMA

Abstract

The mean diameter of palladium metal particles produced by citrate reduction of the (H(+))(n) PDMAEMA/[PdCl(4)](2-) aqueous system increases from 1.4 nm to 5.0 nm as the pH decreases from 6.3 to 3.3 and the (H(+))(n) PDMAEMA/[PdCl(4)](2-) species undergo conversion from a cross linked polymer network to a single chain structure.

Synthesis and micellization properties of triblock copolymers PDMAEMA-b-PCL-b-PDMAEMA and their applications in the fabrication of amphotericin B-loaded nanocontainers

“…According to Tangeysh et al, the protonation degree is a pH function, thus at pH 5.0 it is higher than 80 %. At pH 6.0, that value is close to 30 % and at pH 7.0 and greater is lower than 10 % [45]. Although the protonation degree notoriously decreases from pH 5.0 to 6.0, the values of CMC present a minor variation.…”

Synthesis of Noble Monometal and Bimetal‐Modified Lignin Nanofibers and Carbon Nanofibers Through Surface‐Grafted Poly(2‐(Dimethylamino)Ethyl Methacrylate) Brushes

“…The titled compound (LFM‐PDMA‐Pd) was fabricated according to the literature . The PDMAEMA brush‐modified lignin nanofiber mat (LFM‐PDMA) (1 × 3 cm 2 ) was submerged in 20 mL of a K 2 PdCl 4 (0.04M) in KCl (0.1M) aqueous solution at room temperature.…”

“…Metallic nanoparticles (MNPs) are a new class of chemical objects that have attracted growing attention due to their unique properties compared to bulk and dissolved metals . MNPs are being utilized in diverse fields including plasmonics, optics, catalysis, and biochemistry .…”

“…It is well known that PDMAEMA can entrap transition metal ions such as AuCl 4 2− , PdCl 4 2− , and PtCl 4 2− in aqueous solution. Moreover, AuCl 4 2− can be directly reduced into pure Au upon exposure to PDMAEMA due to its reducing nature . These lignin‐based fibrous materials are then used to immobilize monometallic (Pd, Pt, and Au) and bimetallic (Pd/Pt, Pd/Au, and Au/Pt) nanoparticles and subsequently carbonized to produced functionalized lignin‐based carbon fiber catalytic supports.…”

“…[16,22,26] Metallic nanoparticles (MNPs) are a new class of chemical objects that have attracted growing attention due to their unique properties compared to bulk and dissolved metals. [27][28][29][30][31] MNPs are being utilized in diverse fields including plasmonics, optics, catalysis, and biochemistry. [32] In particular, bimetallic zero-valent nanoparticles (BZVNPs) are being widely used as they often show superior activity compared with their homologous monometallic zero-valent nanoparticle (MZVNP) counterparts.…”