Xu Yi-Qun, Yang Ming, He Cheng-Da, Xiong Hui-Xin
College of Environmental Science Engineering Yangzhou University Yangzhou 225127 China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2013 Dec;33(12):3330-3.
In the present work, based on the stable phase of alpha-FeOOH and beta-FeOOH easily formed in ferric solutions of Fe (NO3)3 and FeCl3 at the appropriate pH values, respectively, the phase and crystallizability, morphologies and sizes for the particles of FeOOH minerals prepared under the conditions of heating at 40 and 70 degreeC, and magnetic stirring at 25 degreeC were identified and examined by X-ray diffraction (XRD), transmission/scanning electron microscopy (TEM/SEM) and laser scattering particle analyzer. Meanwhile the surface chemistry properties were also detected and analyzed by Fourier transform infrared spectrometer (FTIR). Investigation results showed that the prepared minerals Gth-T70 (alpha-FeOOH), Aka-T40 and Aka-T70 (beta-FeOOH) have good properties of nanocrystallity, homogeneous particles and higher specific surface areas, which induced that the above alpha, beta-FeOOH are potentially excellent adsorbent materials for removal of some contaminants in circumstances.
在本研究中，基于分别在适当pH值的Fe(NO3)3和FeCl3铁溶液中容易形成的α-FeOOH和β-FeOOH的稳定相，通过X射线衍射(XRD)、透射/扫描电子显微镜(TEM/SEM)和激光散射颗粒分析仪，对在40和70℃加热以及25℃磁力搅拌条件下制备的FeOOH矿物颗粒的相和结晶性、形态和尺寸进行了鉴定和研究。同时，还通过傅里叶变换红外光谱仪(FTIR)对表面化学性质进行了检测和分析。研究结果表明，制备的矿物Gth-T70(α-FeOOH)、Aka-T40和Aka-T70(β-FeOOH)具有良好的纳米结晶性、颗粒均匀性和较高的比表面积，这表明上述α、β-FeOOH在环境中是潜在的用于去除某些污染物的优良吸附材料。
