Formation of metal nanoparticles in a polymer nanofiber: a hybrid material for gas-phase catalytic reactions

Abstract

This paper describes the synthesis and characterization of a metal-polymer hybrid material formed by the combination of palladium nanoparticles and poly-o-phenylenediamine (poly-PDA). The preparation technique is based on an in situ, one-pot chemical synthesis route using palladium acetate and o-phenylenediamine as precursors. The composite material was characterized by optical, thermal and micro-analytical techniques. The characterization techniques show the successful synthesis of the hybrid material. This composite material was used as a catalyst for a model gas-phase hydrogenation reaction. The activation and deactivation of the catalyst is discussed in relation to the effect of temperature and the phase transition of the polymer.

Metal-free nitrogen-doped hollow carbon spheres synthesized by thermal treatment of poly(o-phenylenediamine) for oxygen reduction reaction in direct methanol fuel cell applications

“…This weight loss may be ascribed to a series of complex chemical reactions, involving bond scissoring, 32,33 followed immediately by new bond formation and crosslinking. 34,35 The bond scissoring resulted in the rapid destruction of a part of the PoPD main chain and the exclusion of small molecular gases, such as methane, hydrogen, acetylene, ammonia, etc. 32,36,37 In this process, dehydrogenation enlarged the conjugated regions.…”

Nanofibrous Bio‐inorganic Hybrid Structures Formed Through Self‐Assembly and Oriented Mineralization of Genetically Engineered Phage Nanofibers

“…Nanofibrous organic–inorganic hybrid structures, where inorganic nanocomponents are formed or assembled within the aligned organic nanofibrous matrix, are important materials that can find applications in electronics, photonics, catalysis, and tissue engineering 1–11. They not only provide a means for supporting and ordering the functional inorganic materials such as nanoparticles,4–6, 8 but also can serve as building blocks to further self‐assemble into higher‐order structures 5, 11, 12.…”

Properties of Polymers Based on Aromatic Diamines

“…Noble metal compounds, such as palladium acetate [90,91], silver nitrate [87,88], or tetrachloroauric acid [55,68,92,93], represent a separate group of oxidizing agents. In these cases, the resulting oligomers or polymers are accompanied by noble metal nanoparticles resulting from the reduction of the corresponding compounds.…”