Introduction to Pd Nanosheets

What is/are Pd Nanosheets?

Pd Nanosheets - Two-dimensional (2D) metallic Pd nanosheets were synthesized by an ion-exchange method using PdCl42– and magnesium- and aluminum-based metallic (LDH) as intercalation ion and host material, respect. ^[1] The mechanism of Pd nanosheets and nanochains catalysts the enhanced electrocatalytic activity toward ethanol oxidation has been discussed based on the experimental data. ^[2] Furthermore, the bifunctional Rh-S/Pd nanosheets have been synthesized through the surface modification of Pd nanosheets with rhodium and sulfide. ^[3] Here, we present a highly active ethanol oxidation electrocatalyst that was prepared by in situ decorating highly dispersed Mo sites on Pd nanosheets (MoOx/Pd) via a surfactant-free and facile route. ^[4] Additionally, different from 2D Pd nanosheets, the distinctive 3D superstructures are featured with rich approachable sites and proper layer spacing, which are in favor of fast mass transport and electron transfers during the catalytic process. ^[5] Here we report a 2D inverse nanocatalyst, named RuOx-on-Pd nanosheets, by in-situ creating atomically dispersed RuOx/Pd interfaces densely on ultrathin Pd nanosheets via a one-pot synthesis. ^[6] Herein, Pd nanosheets decorated with SnO2 nanoflakes (denoted hereafter as Pd@SnO2-NSs) are designed as a composite catalyst, showing superior performance for formic acid electro-oxidation, as compared to pristine Pd nanosheets (Pd-NSs). ^[7] Owing to more exposed Pd atoms, Pd nanosheets exhibited enhanced catalytic performance towards the electrooxidation of liquid fuels compared with Pd nanoparticles [14]. ^[8] Herein, a heterostructured Ir@Pd electrocatalyst with ultrasmall Ir nanoclusters (NCs) epitaxially confined on Pd nanosheets (NSs) for catalyzing the sluggish alkaline HOR is reported. ^[9] Perforated ultrathin Pd nanosheets with crystalline/amorphous heterostructures are rationally synthesized to offer a large electrochemically active surface area of 172. ^[10] Wrinkled Pt–Pd nanosheets of different compositions, with a size of up to 2 μm and a thickness of only 2 nm, can be obtained via a one-pot solvothermal method. ^[11] Herein we present a novel coordination polymer (CP)-engaged approach to create a class of porous 2D Pd nanosheets for enhancing the electrocatalysis of small molecules through a two-step topotactic conversion reaction. ^[12] Due to the magnetic-photothermal properties of Fe3O4 nanoparticles and plasmonic photothermia effect of Pd nanosheets, the combined Fe3O4–Pd JNPs can achieve synergistic heating effects of 1 + 1 > 2. ^[13] Here, we show that the electrochemical deposition of palladium (Pd) between graphene oxide (GO) sheets result in the self-limiting growth of 5-nm-thick Pd nanosheets. ^[14] Moreover, taking advantage of the fact that MTX can be combined with multiple therapeutic methods, the photothermal therapy (PTT) of Pd nanosheets provided a compensatory effect to enhance the therapeutic efficacy of MTX. ^[15] We report an atomic-scale controllable synthesis of the face-centered cubic (fcc) Ru overlayers on Pd nanosheets (Pd@Ru NSs) by a solution-based epitaxial growth method. ^[16] In this work, we constructed a theranostic nanoplatform (DOX/Pd@ZIF-8) based on metal-organic frameworks encapsulating 2D Pd nanosheets and DOX using an all-in-one strategy, taking the advantages of the smart drug delivery function of MOFs and the excellent optical properties of Pd nanosheets. ^[17] Three-dimensional palladium nanoflowers (Pd NF) composed of ultrathin Pd nanosheets had been synthesized by a solvothermal approach in our previous work. ^[18] Here, we have developed a bioartificial device comprising cancer-derived exosomes that are loaded with Pd catalysts by a method that enables the controlled assembly of Pd nanosheets directly inside the vesicles. ^[19] The as-prepared α-BiPd nanosheets exhibit high performance with a low overpotential of 144 mV at −10 mA cm−2 and a Tafel slope of 104. ^[20] Herein, we report an efficient approach to construct a unique class of core/shell palladium-lead (Pd-Pb)/Pd nanosheets (NSs) and nanocubes (NCs) with homogeneous tensile strain along [001] on both the top-Pd and edge-Pd surfaces for boosting oxygen reduction reaction (ORR). ^[21]

Ultrathin Pd Nanosheets

Here we report a 2D inverse nanocatalyst, named RuOx-on-Pd nanosheets, by in-situ creating atomically dispersed RuOx/Pd interfaces densely on ultrathin Pd nanosheets via a one-pot synthesis. ^[1] Perforated ultrathin Pd nanosheets with crystalline/amorphous heterostructures are rationally synthesized to offer a large electrochemically active surface area of 172. ^[2] Three-dimensional palladium nanoflowers (Pd NF) composed of ultrathin Pd nanosheets had been synthesized by a solvothermal approach in our previous work. ^[3]

2d Pd Nanosheets

Additionally, different from 2D Pd nanosheets, the distinctive 3D superstructures are featured with rich approachable sites and proper layer spacing, which are in favor of fast mass transport and electron transfers during the catalytic process. ^[1] Herein we present a novel coordination polymer (CP)-engaged approach to create a class of porous 2D Pd nanosheets for enhancing the electrocatalysis of small molecules through a two-step topotactic conversion reaction. ^[2] In this work, we constructed a theranostic nanoplatform (DOX/Pd@ZIF-8) based on metal-organic frameworks encapsulating 2D Pd nanosheets and DOX using an all-in-one strategy, taking the advantages of the smart drug delivery function of MOFs and the excellent optical properties of Pd nanosheets. ^[3]