摘要
High-pressure solid-state metathesis(HPSSM)reaction is an effective route to novel metal nitrides.A recent advance in HPSSM reactions is presented for a number of examples,including 3d transition metal nitrides(ε-Fe_(3)N,ε-Fe_(3-x)Co_(x)N,CrN,and Co_(4)N_(x)),4d transition metal nitrides(MoNx),and 5d transition metal nitrides(Re_(3)N,WN_(x)).Thermodynamic investigations based on density functional theory(DFT)calculations on several typical HPSSM reactions between metal oxides and boron nitride indicate that the pressure could reduce the reaction enthalpy △H.High-pressure confining environment thermodynamically favors an ion-exchange process between metal atom and boron atom,and successfully results in the formation of well-crystalized metal nitrides with potential applications.
基金
This work was supported by Research Foundation of Key Laboratory of Neutron Physics(Grant No.2015BB03)
National Natural Science Foundation of China(Grant Nos.11774247 and 21301122)
Science Foundation for Excellent Youth Scholars of Sichuan University(Grant No.2015SCU04A04)
Specialized Research Fund for the Doctoral Program of Higher Education(Grant No.20130181120116)
Premier Research Institution for Ultrahigh-pressure Sciences(PRIUS).
