| 水钠锰矿吸附Pb2+亚结构变化的红外光谱研究 |
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| 引用本文： | 赵巍,刘凡,冯雄汉,谭文峰,邱国红,陈秀华.水钠锰矿吸附Pb2+亚结构变化的红外光谱研究[J].地球化学,2011,40(1):99-107. |
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| 作者姓名： | 赵巍 刘凡 冯雄汉 谭文峰 邱国红 陈秀华 |
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| 作者单位： | 华中农业大学农业部亚热带农业资源与环境重点开放实验室;中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室; |
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| 基金项目： | 国家自然科学基金(40771102,40671088) |
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| 摘 要： | 利用红外光谱表征了吸附Pb2+前后的不同锰氧化度的水钠锰矿,结合二次求导退卷积方法确定实际的红外吸收带中心,分析了水钠锰矿红外吸收带的归属.结果表明,供试样品的899～920 cm-1红外吸收带源于八面体空穴处OH的弯曲振动,随着水钠锰矿锰氧化度的降低,空穴处与OH配位的Mn4+被Mn3+替代的数量增多,OH弯曲振动频...
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| 关 键 词： | 水钠锰矿 吸附 Pb2+ 红外光谱 OH弯曲振动 |
FTIR study on the variance of substructure of birnessite before and after Pb2+adsorption |
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| ZHAO Wei,LIU Fan,FENG Xiong-han,TAN Wen-feng,QIU Guo-hong,CHEN Xiu-hua.FTIR study on the variance of substructure of birnessite before and after Pb2+adsorption[J].Geochimica,2011,40(1):99-107. |
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| Authors: | ZHAO Wei LIU Fan FENG Xiong-han TAN Wen-feng QIU Guo-hong CHEN Xiu-hua |
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| Institution: | ZHAO Wei1,2,LIU Fan1,FENG Xiong-han1,TAN Wen-feng1,QIU Guo-hong1 and CHEN Xiu-hua1 1.Key Laboratory of Subtropical Agriculture Resource & Environment,Ministry of Agriculture of China,Huazhong Agricultural University,Wuhan 430070,China,2.State Key Laboratory of Soil Erosion and Dryland Farming in the Loess Plateau,Institute of Soil and Water Conservation,Chinese Academy of Sciences,Yangling,712100 |
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| Abstract: | The structural features of birnessites with different Mn average oxidation state(AOS) before and after Pb2+ adsorption were characterized by Fourier Transform Infrared(FTIR),and the absorption band centers of FTIR were determined by second derivatives of these spectra.The band at 899-920 cm-1 was assigned to the bending vibration of -OH located at vacant Mn octahedral sites.The lower AOS in birnessite,the more Mn4+ coordinated to -OH located at vacant Mn octahedral sites displaced by Mn3+,which led to the p... |
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| Keywords: | birnessite adsorption Pb2 infrared spectra OH bending vibration |
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