Tailored Palladium–Platinum Nanoconcave Cubes as High Performance Catalysts for the Direct Synthesis of Hydrogen Peroxide

Abstract

To obtain high catalytic properties, finely modulating the electronic structure and active sites of catalysts is important. Herein, we report the design and economical synthesis of Pd@Pt core–shell nanoparticles for high productivity in the direct synthesis of hydrogen peroxide. Pd@Pt core–shell nanoparticles with a partially covered Pt shell on a Pd cube were synthesized using a simple direct seed-mediated growth method. The synthesized Pd@Pt core–shell nanoparticles were composed of high index faceted Pt on the corners and edges, while the Pd–Pt alloy was located on the terrace area of the Pd cubes. Because of the high-indexed Pt and Pd–Pt alloy sites, the synthesized concave Pd@Pt7 nanoparticles exhibited both high H2 conversion and H2O2 selectivity compared with Pd cubes.

The Direct Synthesis of Hydrogen Peroxide over AuPd Nanoparticles: An Investigation into Metal Loading

“…While Pd-based catalysts have been well reported to offer high activity towards H 2 O 2 production via the direct route [1,3,[10][11][12][13][14], there has been extensive investigation into the alloying of Pd with secondary metals to improve catalytic performance [15][16][17][18][19][20][21][22][23][24]. Indeed, the introduction of Au into supported Pd catalysts has been widely demonstrated to improve catalytic efficacy, with electronic, structural and isolation effects all potential causes for the enhanced performance typically observed in AuPd bi-metallic systems [25][26][27][28].…”

Advanced Development Strategy of Nano Catalyst and DFT Calculations for Direct Synthesis of Hydrogen Peroxide

“…[ 6 ] In this regard, hydrogen peroxide has been assessed as a superior oxidant compared to other commercially available oxidants, such as chlorine‐containing (e.g., NaClO), halogen‐based gases (e.g., F 2 and Cl 2 ), or heavy‐metal‐containing oxidants (e.g., CrO 3 , MnO 4 2– , RuO 4 , and OsO 4 ). [ 3,7 ]…”

Comparing Catalysts of the Direct Synthesis of Hydrogen Peroxide in Organic Solvent: is the Measure of the Product an Issue?

“…For this paper we have reviewed 79 papers dealing with the DS and published since 2000 to date [8–80] (Figure 1). Out of them three regrettably did not report how the amount of H 2 O 2 was measured [81–83] .…”