Preceramic Polymers as Precursors of Advanced Ceramics: The Polymer-Derived Ceramics (PDCs) Route

Green emitting β$\ubeta$‐SiAlON:Eu2+ phosphors derived from chemically modified perhydropolysilazanes

“…3,6 On the other hand, a novel polymer-derived ceramics (PDCs) route has been found as convenient and appropriate for the synthesis of silicon (Si)-based non-oxide ceramic systems. [7][8][9][10] The PDCs route offers several potential advantages, including compositional homogeneity, purity, and structure tailorability, which can be achieved by an in situ formation of polycrystalline ceramics from a novel metastable amorphous compound produced by pyrolysis of a single-source precursor, in which strictly controlled chemical composition can be established at molecular scale. [11][12][13][14] In this route, perhydropolysilazane (PHPS) composed of only Si, N, and H has some advantages in high purity for the synthesis of Si 3 N 4 ceramics.…”

Chemical route for synthesis of β-SiAlON:Eu2+ phosphors combining polymer-derived ceramics route with non-hydrolytic sol-gel chemistry

“…Ceramic processing methods based on the molecular chemistry of organometallic precursors are efficient approaches to synthesizing such high-performance functional ceramics with accurately-controlled chemical composition along with the local structure at the molecular size scale level [7][8][9][10][11][12][13]. Among them, the polymer-derived ceramics (PDCs) route is convenient and appropriate for the synthesis of silicon (Si)-based non-oxide ceramic systems [11][12][13].…”

“…Ceramic processing methods based on the molecular chemistry of organometallic precursors are efficient approaches to synthesizing such high-performance functional ceramics with accurately-controlled chemical composition along with the local structure at the molecular size scale level [7][8][9][10][11][12][13]. Among them, the polymer-derived ceramics (PDCs) route is convenient and appropriate for the synthesis of silicon (Si)-based non-oxide ceramic systems [11][12][13]. In this route, polysilazane derivatives are frequently used as a starting polymer precursor, especially perhydropolysilazane (PHPS) composed of only Si, N, and H elements has some advantages in high purity and high ceramic yield for Si 3 N 4 ceramics synthesis [14][15][16].…”

Mechanistic Investigation of the Formation of Nickel Nanocrystallites Embedded in Amorphous Silicon Nitride Nanocomposites

“…Chemical routes toward ceramics are well-suited approaches for designing and synthesizing such highly active catalysts with the required ceramic robustness, especially in harsh environments. A very convenient precursor route is the polymer derived ceramics (PDCs) route, which allows fine control over the chemical composition of the final ceramic materials as well as their phase distribution and nanostructure [ 5 , 6 , 7 ]. In recent years, TM/Si-based (oxy-)carbide (SiC, SiOC) and carbonitride (SiCN) matrix nanocomposites, such as Ni/SiC, Ni/SiOC, Ni/SiCN(O), and M/SiCN (M = Pd, Ru, Pd 2 Ru, Cu, Ir, Ni, Pt, Co, and Fe) derived from metal-modified polycarbosilanes, polysiloxanes, and polysilazanes have been developed with enhanced catalytic performance and/or higher reusability [ 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ].…”