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首页> 外文期刊>Talanta: The International Journal of Pure and Applied Analytical Chemistry >Study of adsorption of methylene blue and new methylene blue in liquid-solid interface by slab optical waveguide spectroscopy
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Study of adsorption of methylene blue and new methylene blue in liquid-solid interface by slab optical waveguide spectroscopy

机译:平板光波导光谱研究液-固界面上亚甲基蓝和新亚甲基蓝的吸附

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摘要

A slab optical waveguide (SOWG) has been used for study of adsorption of both methylene blue (MB) and new methylene blue (NMB) in liquid-solid interface. Adsorption characteristics of MB and NMB on both bare SOWG and silanized SOWG by octadecyltrichlorosilane (ODS) were compared. Effect of pH on adsorption on MB and NMB was investigated. Binding rate constant analysis showed that both MB and NMB on bare SOWG demonstrates larger association constants than those on ODS-SOWG. Interactions of NIB and NMB on bare SOWG and ODS-SOWG were analyzed by molecular mechanics calculation method. The binding energy change was in the following order: ENMB-bare > EMB-bare > ENMB-ODS > EMB-ODS. (c) 2004 Elsevier B.V. All rights reserved.
机译:平板光波导(SOWG)已用于研究液-固界面中亚甲基蓝(MB)和新亚甲基蓝(NMB)的吸附。比较了十八烷基三氯硅烷(ODS)在裸SOWG和硅烷化SOWG上MB和NMB的吸附特性。研究了pH对MB和NMB吸附的影响。结合速率常数分析表明,裸SOWG上的MB和NMB均显示出比ODS-SOWG上更大的缔合常数。通过分子力学计算方法分析了NIB和NMB在裸SOWG和ODS-SOWG上的相互作用。结合能的变化按以下顺序进行:裸露的ENB>裸露的EMB> ENMB-ODS> EMB-ODS。 (c)2004 Elsevier B.V.保留所有权利。

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