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新型复合CdIn2S4/ZnIn2S4异质结的制备及其光催化性能

张博 李雪梅 朱文祺

张博, 李雪梅, 朱文祺. 新型复合CdIn2S4/ZnIn2S4异质结的制备及其光催化性能[J]. 复合材料学报, 2023, 40(12): 6685-6696.
引用本文: 张博, 李雪梅, 朱文祺. 新型复合CdIn2S4/ZnIn2S4异质结的制备及其光催化性能[J]. 复合材料学报, 2023, 40(12): 6685-6696.
ZHANG Bo, LI Xuemei, ZHU Wenqi. Preparation and Photocatalytic Properties of Novel Composite CdIn2S4/ZnIn2S4 Heterojunction[J]. Acta Materiae Compositae Sinica, 2023, 40(12): 6685-6696.
Citation: ZHANG Bo, LI Xuemei, ZHU Wenqi. Preparation and Photocatalytic Properties of Novel Composite CdIn2S4/ZnIn2S4 Heterojunction[J]. Acta Materiae Compositae Sinica, 2023, 40(12): 6685-6696.

新型复合CdIn2S4/ZnIn2S4异质结的制备及其光催化性能

基金项目: 山东省自然科学基金面上项目(ZR2020MD115);国家级大学生创新创业训练计划项目(202110430028);山东省大学生创新创业训练计划项目(S202210430014)
详细信息
    通讯作者:

    李雪梅,博士,教授,硕士生导师,主要从事纳米材料光电催化水处理等方面的研究。 E-mail:ch1889 l@sdjzu.edu.cn

  • 中图分类号: TQ028.8

Preparation and Photocatalytic Properties of Novel Composite CdIn2S4/ZnIn2S4 Heterojunction

Funds: General program of Shandong Natural Science Foundation (ZR2020MD115); National undergraduate innovation and entrepreneurship training program (202110430028); Shandong University Student Innovation and Entrepreneurship Training Program (S202210430014)
  • 摘要: 探索高效、稳定的光催化剂是实现实用化太阳能光催化降解污染物的永恒追求。采用化学共沉淀法合成了CdIn2S4/ZnIn2S4微球,然后500°C退火得到降解性能更好的CdIn2S4/ZnIn2S4异质结。SEM、XRD、XPS、BET和UV-Vis DRS对样品进行了表征。观察到异质结外貌为球形,具有典型的介孔结构,表面光电流响应和阻抗测试结果显示其活性显著增强。在光催化降解亚甲基蓝的反应中,退火后的CdIn2S4/ZnIn2S4异质结的光催化 活性最佳。反应90 min后,亚甲基蓝(MB)的降解率为96.7%。活性的提高可以归因于催化剂对可见光吸收的增强和光生电荷分离效率的提高。对照实验证明,降解体系中产生的活性物种·O2-在降解过程中起关键作用。预测了异质结光催化降解污染物的机制。本研究合成的复合CdIn2S4/ZnIn2S4异质结对制备高效光催化材料具有借鉴意义,并展示了其在降解污染物方面的良好实用性。

     

  • 图  1  (a)-(f)材料SEM图;(g)CdIn2S4/ZnIn2S4-2的元素面扫图

    Figure  1.  (a)-(f) Material SEM diagram; (g) Element surface scanning diagram of CdIn2S4/ZnIn2S4-2

    图  2  (a)X射线衍射谱图,(b)CdIn2S4/ZnIn2S4-2的吸附-脱附等温线

    Figure  2.  (a)X-ray diffraction spectrum,(b)Adsorption desorption isotherm of CdIn2S4/ZnIn2S4-2

    图  3  CdIn2S4-1、CdIn2S4-2、ZnIn2S4-1、ZnIn2S4-2、CdIn2S4/ZnIn2S4-1和CdIn2S4/ZnIn2S4-2复合材料的紫外-可见漫反射光谱(a),Tanc plot (b)

    Figure  3.  (a) UV-visible diffuse reflection spectrum, (b) Tanc plot of CdIn2S4-1、CdIn2S4-2、ZnIn2S4-1、ZnIn2S4-2、CdIn2S4/ZnIn2S4-1 and CdIn2S4/ZnIn2S4-2 composite material

    图  4  CdIn2S4/ZnIn2S4-2的XPS表征

    Figure  4.  XPS Characterization of CdIn2S4/ZnIn2S4-2

    图  5  (a)不同材料在可见光照射下的光催化降解曲线, (b)CdIn2S4/ZnIn2S4-2降解 MB的UV-Vis光谱随光照时间的变化, (c) 不同材料光催化降解MB的动力学(C0C分别为污染物的初始浓度和降解反应过程中某时刻的浓度), (d)相应的反应常数k

    Figure  5.  (a) Photocatalytic degradation curve of different materials under visible light irradiation, (b) UV Vis spectrum of CdIn2S4/ZnIn2S4-2 degrading MB changes with light time, (c) kinetics of photocatalytic degradation of MB by different materials (C0 and C are the initial concentration of pollutants and the concentration at a certain time during the degradation reaction) (d) corresponding reaction constant k

    图  6  CdIn2S4-2、ZnIn2S4-2、和CdIn2S4/ZnIn2S4-2复合材料的电化学表征: (a)SPC, (b)EIS

    Figure  6.  Electrochemical Characterization of CdIn2S4-2、ZnIn2S4-2 and CdIn2S4/ZnIn2S4-2 composite material (a)SPC, (b)EIS

    图  7  (a)自由基抑制剂的影响,(b)和(c)CdIn2S4/ZnIn2S4-2原位EPR光谱,(d)稳定性分析,(e)CdIn2S4/ZnIn2S4-2反应前后XRD;(f)亚甲基蓝去除率Fig. 7(a) Effect of free radical inhibitor, (b) and (c) CdIn2S4/ZnIn2S4-2 in-situ EPR spectrum, (d) stability analysis, (e) XRD before and after CdIn2S4/ZnIn2S4-2 reaction; (f) Methylene blue removal rate

    图  8  CdIn2S4/ZnIn2S4-2的光催化反应机制

    Figure  8.  Photocatalytic reaction mechanism of CdIn2S4/ZnIn2S4-2

    表  1  CdIn2S4/ZnIn2S4 EDS能谱

    Table  1.   CdIn2S4/ZnIn2S4 EDS

    AtonicCdZnInS
    CdIn2S4/ZnIn2S4-1 9.94%3.93%55.19%30.94%
    CdIn2S4/ZnIn2S4-210.06%3.84%55.18%30.92%
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  • 收稿日期:  2023-01-05
  • 修回日期:  2023-03-05
  • 录用日期:  2023-03-11
  • 网络出版日期:  2023-03-29
  • 刊出日期:  2023-12-15

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