Synthesis of beta carbon nitride nanosized crystal through mechanochemical reaction

被引:24
作者
Yin, LW
Li, MS
Liu, YX
Sui, JL
Wang, JM
机构
[1] Shandong Univ, Coll Mat Sci & Engn, Jinan 250031, Peoples R China
[2] Shadong Univ Sci & Technol, Sch Powder & Control Engn, Jinan 250031, Peoples R China
关键词
D O I
10.1088/0953-8984/15/2/330
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
Nanosized beta carbon nitride (beta-C3N4), of grain size several tens of nanometres, has been synthesized by mechanochemical reaction processing. The low-cost synthetic method developed facilitates the novel and effective synthesis of nanosized crystalline beta-C3N4 (a = 6.36 Angstrom, c = 4.648 Angstrom) powders. The graphite powders were first milled to a nanoscale state, then the nanosized graphite powders were milled in an atmosphere of NH3 gas. It was found that nanosized beta-C3N4 was formed after high-energy ball milling under an NH3 atmosphere. After thermal annealing, the shape of the P-C3N4 changes from flake-like to sphere-like. The nanosized beta-C3N4 formed was characterized by x-ray diffraction, Fourier transformation infrared spectroscopy, and transmission electron microscopy. A solid-gas reaction mechanism was proposed for the formation of nanosized beta-C3N4 at room temperature induced by mechanochemical activation.
引用
收藏
页码:309 / 314
页数:6
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