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Porous Tungsten Carbide Nanoplates Derived from Tungsten Trioxide Nanoplates
Author(s) -
Chen Deliang,
Zhai Haitao,
Chen Huimin,
Zhang Yi,
Fan Bingbing,
Wang Hailong,
Lu Hongxia,
Li Zhengxin,
Zhang Rui,
Sun Jing,
Gao Lian
Publication year - 2012
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2012.05449.x
Subject(s) - tungsten trioxide , carbonization , materials science , tungsten carbide , tungsten , tungstate , chemical engineering , porosity , specific surface area , nanotechnology , molybdenum trioxide , catalysis , molybdenum , metallurgy , composite material , scanning electron microscope , chemistry , organic chemistry , engineering
Porous WC nanoplates ( PWCP s) were synthesized by a nitridization‐carbonization process using WO 3 nanoplates as the precursor for morphological control. The WO 3 nanoplates were derived from tungstate‐based inorganic‐organic hybrid belts. The synthesis of PWCP s involved a nitridization reaction of WO 3 nanoplates in NH 3 at 650°C for 2 h, followed by a carbonization reaction in a CO / CO 2 (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 PWCP s 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.