摘要
<正>针铁矿是表生氧化环境中普遍存在的一种铁氧化物,广泛存在于土壤和沉积物中,对营养元素以及有毒有害元素的迁移、转化、富集具有重要的作用,体现了针铁矿-水界面的活跃性[1,2]。针铁矿较强的表面活性与其矿物学特征密切相关。针铁矿的矿物学特性,包括晶体结构、晶体形态以及表面物理化学特征已有广泛报道[3-5],针铁矿(010)面投影见图1。关于针铁矿的可控制备和表征也有部分报道,笔者进一步探究了温度和pH对合成针铁矿的调控作用。
引文
[1]J.-F.Boily,Water Structure and Hydrogen Bonding at Goethite/Water Interfaces:Implications for Proton Affinities,The Journal of Physical Chemistry C,116(2012)4714.4724.
[2]C.Salazar-Camacho,M.Villalobos,Goethite surface reactivity:III.Unifying arsenate adsorption behavior through a variable crystal face-Site density model,Geochimica et Cosmochimica Acta,74(2010)2257-2280.
[3]阮华达,吉波博,贺纪正,铝代换针铁矿及其加热形成赤铁矿的矿物学特性,华中农业大学学报,16(1997)562.570.
[4]B.Prelot,F.Villieras,M.Pelletier,G.Gerard,F.Gaboriaud,J.-J.Ehrhardt,J.Perrone,M.Fedoroff,J.Jeanjean,G.Lefevre,L.Mazerolles,J.-L.Pastol,J.-C.Rouchaud,C.Lindecker,Morphology and surface heterogeneities in synthetic goethites,Journal of Colloid and Interface Science,261(2003)244-254.
[5]R.M.Cornell,U.Schwertmann,The iron oxides:structure,properties,reactions,occurences and uses,2th edition,WILEY-VCH GmbH&Co.KGaA.,(2003).