Porous Tungsten Carbide Nanoplates Derived from Tungsten Trioxide Nanoplates

Abstract

Porous WC nanoplates (PWCPs) were synthesized by a nitridization‐carbonization process using WO3 nanoplates as the precursor for morphological control. The WO3 nanoplates were derived from tungstate‐based inorganic‐organic hybrid belts. The synthesis of PWCPs involved a nitridization reaction of WO3 nanoplates in NH3 at 650°C for 2 h, followed by a carbonization reaction in a CO/CO2 (10:1, v/v) mixture at 750°C for 10 h. The as‐obtained product is a pure hexagonal WC phase with a plate‐like and porous morphology. The aggregates of the PWCPs with dimensions of (100–300) × (10–30) nm form a house‐of‐card structure with open channels and high‐specific surface areas, and can act as potential supports of electrocatalysts for high‐performance fuel cells.

Synthesis and classification of WC and W metals via organic–inorganic complex precursors

“…13), 14) These methods have several advantages for processing nano-crystalline WC materials. Nano-crystalline WC can be available at relatively low temperatures (12731423 K) without requiring any hydrogen gas.…”