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图 1 各样品的XRD示意图
Figure 1. XRD diagram of each sample.
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图 2 (a，b)分别为 CdS-NPs 与 ZIF-8 的SEM图；(c，d)为 ZIF-8/CdS 的 TEM 图，(e)为HAADF-STEM图与 ZIF-8/CdS 的元素衍射图
Figure 2. SEM images of pure CdS-NPs (a) and ZIF-8 (b); TEM images of pure CdS nanoparticles (c ， d） and HAADF-STEM image of ZIF-8/CdS composite and the corresponding elemental mapping images（e）
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图 3 ZIF-8/CdS 复合材料的 XPS 光谱和与各单体相应的 Zn 2p、Cd 3d 和 S 2p 的高分辨率 XPS 光谱。
Figure 3. XPS survey spectra of ZIF-8/CdS composite and high-resolution XPS spectra of Zn 2p, Cd 3d, and S 2p. corresponding to each monomer.
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图 4 (a) CdS 和 ZIF-8/CdS 复合材料的 N2 吸附/解吸等温线，(b) CdS 和 ZIF-8/CdS 复合材料的孔径分布图
Figure 4. N2 adsorption/desorption isotherms of CdS and ZIF-8/CdS composite (a), the pore size distribution of the ZIF-8/CdS and CdS (b)
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图 5 (a) CdS和 ZIF-8/CdS 复合材料在可见光照射下 (λ > 420 nm) 的瞬态光电流响应，(b)不同修饰电极的电化学阻抗谱，(c) 各组分的UV-vis DRS曲线，(d) 各组分的PL强度曲线
Figure 5. (a) Photocurrent responses of CdS and ZIF-8/CdS composite under visible light irradiation (λ > 420 nm), (b) the electrochemical impedance spectra of different-modified electrodes, (c) UV-vis DRS curves for each component, (d) PL strength curves of each component.
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图 6 (a) 存在 ZC-40 (50 mg)的 MB 溶液 (15 mg L−1) 的 UV-vis 吸收光谱图，(b) CdS、ZIF-8、ZC-80、和 ZC-40 的降解曲线（所有样品质量：50 mg；MB 溶液浓度：15 mg L−1），(c)MB溶液的pH 环境对ZC-40降解能力的影响，（d） ZC-40在3次循环中的可回收能力
Figure 6. (a) UV-vis absorption spectra of ZC-40 (50 mg) in MB solution (15 mg L−1), (b) Degradation curves of CdS, ZIF-8, ZC-80 and ZC-40 (All samples quality: 50 mg; MB solution concentration: 15 mg L−1), (c)Effect of pH environment of MB solution on ZC-40 degradation ability，（d） The recyclability ability of ZC-40 in three cycles.
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图 7 不同捕获剂对 ZC-40 去除 MB 的影响
Figure 7. Effect of different trapper on the removal rate of MB.
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图 8 ZIF-8/CdS 复合材料在可见光照射下的光催化降解MB过程示意图
Figure 8. Schematic illustration of the photocatalytic MB degradation process over ZIF-8/CdS composites under visible light irradiation.
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