摘要
重点分析不同pH环境条件下的水热产物形貌特征,从成核机理、界面模型以及生长法则三方面,解释了其在水热过程中发生定向生长的原因。并结合颗粒生长规律,用最小自由能原则揭示了不同pH介质环境体系下导致AlOOH发生异型形貌的根本原因。结合AlOOH晶体结构特点,构建了AlOOH的界面模型。阐明了环境体系影响晶体的化学键链,从而改变了外在形貌的本质,因此得出了pH介质不同、生长界面模型不同、其成长机制也就不同的结论。
This paper focuses on the analysis of topographical characteristics of hydrothermal products under different pH environments and explains the reason for its oriented growth in the hydrothermal process in terms of nucleation mechanism, interface model and growth principle. Furthermore, combining with partical growth regulation, this paper adopts the minimal free energy principle to disclose the fundamental reasons that heterogenic topography occurs to AIOOH under different pH medium environmental systems. This paper also adopts the structural characteristics of AIOOH crystal to establish an AIOOH interface model and illustrates that the environmental system influences the chemical bond chain of the crystal, thereby changes the nature of external topography. Thus, the paper obtains the conclusion that as pH medium changing, the growth interface model is different and further the growth mechanism is different as well.
出处
《矿冶》
CAS
2011年第3期53-56,共4页
Mining And Metallurgy
