锰(氢)氧化物在矿物表面的异相成核生长及其地球化学意义  

Heterogeneous nucleation and growth of manganese(oxyhydr)oxides on mineral surfaces and their geochemical significances

作　　者：曹杰龙 杨奕煊 刘晶 陈情泽[1,2,3] 李鸿博 朱润良 CAO Jielong;YANG Yixuan;LIU Jing;CHEN Qingze;LI Hongbo;ZHU Runliang(CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences(CAS),Guangzhou Guangdong 510640,China;CAS Center for Excellence in Deep Earth Science,Guangzhou Guangdong 510640,China;University of Chinese Academy of Science,Beijing 100049,China;State Key Laboratory of Lunar and Planetary Sciences,Macao University of Science and Technology,Macao 999078,China)

机构地区：[1]中国科学院广州地球化学研究所中国科学院矿物学与成矿学重点实验室/广东省矿物物理与材料研究开发重点实验室,广东广州510640 [2]中国科学院深地科学卓越创新中心,广东广州510640 [3]中国科学院大学,北京100049 [4]澳门科技大学月球与行星科学国家重点实验室,中国澳门999078

出　　处：《矿物学报》2024年第5期715-727,共13页Acta Mineralogica Sinica

基　　金：国家杰出青年科学基金(批准号:42225203);国家自然科学基金(批准号:42272045,42302033);广东省基础与应用基础研究基金(批准号:2023B1515020006,2023A1515110854);广东省科技计划(批准号:2023B1212060048)。

摘　　要：锰(氢)氧化物(MnO_(x))广泛存在于自然环境中,具有比表面积大、反应活性强等特点。MnO_(x)的形成与转化显著影响地表氧化还原循环、环境物质迁移转化等地球化学过程。矿物表面可催化Mn(Ⅱ)氧化结晶、为MnO_(x)的异相成核生长提供基底,是MnO_(x)形成的重要场所。近年来,矿物表面诱导MnO_(x)异相成核生长过程受到广泛关注。本文综述了MnO_(x)在环境典型矿物表面[铁(氢)氧化物、锰(氢)氧化物、黏土矿物、碳酸盐矿物和石英]的异相成核生长过程,探讨了矿物结构和环境条件对反应途径、产物结构的影响,并展望了未来的研究方向。Manganese(oxyhydr)oxides(MnO_(x))are ubiquitously distributed in natural environment with characteristics of high specific surface area and strong reactivity.The formation and transformation of MnO_(x) significantly influence geochemical processes such as the redox cycling as well as the migration and transformation of environmental substances on the Earth’s surface.The foreign mineral surfaces can catalyze the oxidation of Mn(Ⅱ)and the subsequent crystallization,and provide substrate for the heterogeneous nucleation and growth of MnO_(x),which are important places for the formation of MnO_(x).In recent years,the heterogeneous nucleation and growth processes induced by mineral surfaces have been paid widely attention.In this paper,we have reviewed the current understanding on the heterogeneous nucleation and growth processes of MnO_(x) on surfaces of typical environmental minerals including iron and manganese(oxyhydr)oxides,clay minerals,carbonate minerals,and quartz.The influences of mineral structures and environmental conditions on reaction pathways and product structures are also discussed.Finally,some future relevant research directions are prospected.

关 键 词：锰(氢)氧化物 异相成核生长 氧化还原循环 矿物结构 环境条件 

分 类 号：P571[天文地球—矿物学] P574[天文地球—地质学]