Physical Chemistry of Crystalline (K,NH4)H2PO4 in Aqueous Solution: An in Situ Molecule Vibration Spectral Observation of the Early Formation Stage

	Physical Chemistry of Crystalline (K,NH4)H2PO4 in Aqueous Solution: An in Situ Molecule Vibration Spectral Observation of the Early Formation Stage
	Sun,Congting ; Xue,Dongfeng
刊名	journal of physical chemistry c
	2014
卷号	118 期号:29 页码:16043-16050
关键词	GROWTH PHASE K1-X(NH4)(X)H2PO4 NUCLEATION CLUSTERS SYSTEM RAMAN KADP ADP
通讯作者	xue,df
英文摘要	the competing occupancy of cation position by nh4+ and k+ during crystallization produces local distortions in structure, resulting in the difficulties in growing high-quality (k,nh4)h2po4 single crystals with particular mixing concentration. crystal properties such as structure, defect density, and purity always depend on the early formation stage of crystalline (k,nh4)h2po4 molecule. identification of the effect of k+/nh4+ mole ratios in kh2po4-nh4h2po4 aqueous solution on (k,nh4)h2po4 molecule motion at the early stage of crystallization can provide the strategy to growing high-quality (k,nh4)h2po4 crystals with particular mixing concentration. in situ molecule vibration spectroscopy was used to identify the early formation stage of crystalline (k,nh4)h2po4 in kh2po4-nh4h2po4 aqueous solution with various k+/nh4+ mole ratios. (k,nh4)h2po4 molecule motion was imaged via integrating the structural information on ir/raman-active nh4+, h2po4-, and hydrogen bonding infrastructures. k+/nh4+ mole ratio in kh2po4-nh4h2po4 aqueous solution determines the supersaturation in crystallization system as well as the competing incorporation of k+ and nh4+ into the lattice. both lower supersaturation and stronger competition between cations hinder the crystallization of (k,nh4)h2po4, resulting in the remarkable spectral difference before and after the formation of crystalline (k,nh4)h2po4. our results demonstrate the concept of competed incorporation between different cations into the anionic framework from the molecular viewpoint.
收录类别	SCI
语种	英语
公开日期	2015-10-27
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/56195]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Sun,Congting,Xue,Dongfeng. Physical Chemistry of Crystalline (K,NH4)H2PO4 in Aqueous Solution: An in Situ Molecule Vibration Spectral Observation of the Early Formation Stage[J]. journal of physical chemistry c,2014,118(29):16043-16050.
APA	Sun,Congting,&Xue,Dongfeng.(2014).Physical Chemistry of Crystalline (K,NH4)H2PO4 in Aqueous Solution: An in Situ Molecule Vibration Spectral Observation of the Early Formation Stage.journal of physical chemistry c,118(29),16043-16050.
MLA	Sun,Congting,et al."Physical Chemistry of Crystalline (K,NH4)H2PO4 in Aqueous Solution: An in Situ Molecule Vibration Spectral Observation of the Early Formation Stage".journal of physical chemistry c 118.29(2014):16043-16050.