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图  1  KZTS-NS吸附Cs⁺的吸附动力学曲线

Figure 1.  Adsorption kinetics of KZTS-NS to Cs⁺ in aqueous solution

图  2  拟一级与拟二级动力学模型拟合

Figure 2.  Fitting of pseudo-first-order and pseudo-second-order models

图  3  不同温度下KZTS-NS吸附Cs⁺的等温线以及Langmuir与Freundlich模型的数据拟合图

Figure 3.  Adsorption isotherms of Cs⁺ onto KZTS-NS at varying temperature and the fitting curves of Langmuir and Freundlich models

图  4  lnK_d与T⁻¹的关系图

Figure 4.  Relationship between lnK_d and T⁻¹

图  5  多种因素对KZTS-NS吸附Cs⁺的影响

Figure 5.  Influence of various factors on the adsorption of Cs⁺ by KZTS-NS

图  6  所合成的KZTS-NS吸附材料的SEM图

Figure 6.  SEM images of the synthesized KZTS-NS adsorption material

图  7  KZTS-NS吸附Cs⁺前后的元素分布图与EDS图谱

Figure 7.  Elemental mapping images of KZTS-NS before and after adsorption of Cs⁺

图  8  吸附前后KZTS-NS的XRD谱图

Figure 8.  XRD patterns of KZTS-NS before and after adsorption

图  9  KZTS-NS吸附Cs⁺前后的XPS谱图

Figure 9.  XPS spectra of KZTS-NS before and after Cs⁺ adsorption

图  10  不同温度下KZTS-NS吸附Cs⁺的量与脱附K⁺的量的关系图与KZTS-NS对Cs⁺的吸附机理图

Figure 10.  Relationship between the absorption amount of Cs⁺ by KZTS-NS and the desorption amount of K⁺ at different temperatures and the adsorption mechanism of KZTS-NS for Cs⁺