坡缕石负载Zn-In LDO/ZnS/In2S3 复合材料对甲基橙的光催化降解

doi:10.11901/1005.3093.2024.273

材料研究学报

2025, Vol. 39

Issue (6): 413-424 DOI: 10.11901/1005.3093.2024.273

研究论文

本期目录 | 过刊浏览

坡缕石负载Zn-In LDO/ZnS/In₂S₃ 复合材料对甲基橙的光催化降解

马雪娥¹, 胡美凤¹, 宋雪丽¹, 常玥¹^,²^,³(

), 查飞¹

^1.西北师范大学化学化工学院兰州 730070
^2.生态功能高分子材料教育部重点实验室兰州 730070
^3.甘肃省高分子材料重点实验室兰州 730070

Photocatalytic Degradation of Methyl Orange Using Palygorskite Supported Zn-In LDO/ZnS/In₂S₃ Composites

MA Xue′e¹, HU Meifeng¹, SONG Xueli¹, CHANG Yue¹^,²^,³(

), ZHA Fei¹

^1.College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
^2.Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education, Lanzhou 730070, China
^3.Key Laboratory of Polymer Materials of Gansu Province, Lanzhou 730070, China

引用本文:

马雪娥, 胡美凤, 宋雪丽, 常玥, 查飞. 坡缕石负载Zn-In LDO/ZnS/In₂S₃ 复合材料对甲基橙的光催化降解[J]. 材料研究学报, 2025, 39(6): 413-424.
Xue′e MA, Meifeng HU, Xueli SONG, Yue CHANG, Fei ZHA. Photocatalytic Degradation of Methyl Orange Using Palygorskite Supported Zn-In LDO/ZnS/In₂S₃ Composites[J]. Chinese Journal of Materials Research, 2025, 39(6): 413-424.

全文: PDF(12028 KB) HTML

摘要:

以坡缕石负载Zn-In LDO(PGS@Zn-In LDO)和硫代乙酰胺为原料，通过水热法在PGS@Zn-In LDO上原位生长ZnS、In₂S₃制备PGS@Zn-In LDO/ZnS/In₂S₃复合材料，利用X射线衍射仪(XRD)、比表面积-孔径分析仪(BET)、扫描电子显微镜(SEM)、热场发射透射电子显微镜(TEM)、X射线光电子能谱仪(XPS)、电感耦合等离子体发射光谱仪(ICP-OES)、紫外-可见分光光度计(Uv-vis DRS)、荧光光谱仪、电化学交流阻抗(EIS)测试等手段对其表征，研究其对甲基橙(MO)的光催化降解性能。结果表明，这种材料的吸光范围比Zn-In LDO/ZnS/In₂S₃的宽。并且坡缕石有利于Zn-In LDO/ZnS/In₂S₃复合材料的光生载流子的迁移。模拟可见光光照60 min后50%PGS@Zn-In LDO/ZnS/In₂S₃-2复合材料对甲基橙(MO)的降解率为99.1%，其催化稳定性也比较高。在这种材料的光降解反应中起关键作用的是超氧负离子和空穴，在相同的实验条件下对酸性品红、结晶紫、罗丹明B、孔雀石绿、亚甲基蓝等常见染料的降解率不低于97.2%。

关键词 ：复合材料, 工业催化, 染料废水, 光催化降解, 坡缕石负载Zn-In LDO/ZnS/In₂S₃

Abstract：

Herein, composites PGS@Zn-In LDO/ZnS/In₂S₃ were prepared by hydrothermal method with palygorskite (PGS) supported Zn-In LDO (PGS@Zn-In LDO) and thioacetamide as raw materials, namely in situ growth of ZnS and In₂S₃ on PGS@Zn-In LDO. The light absorption region of PGS@Zn-In LDO/ZnS/In₂S₃ composites is wider than that of the plain PGS@Zn-In LDO in ultraviolet-visible diffuse reflection spectrum. Photoluminescence spectrum and electrochemical impedance spectroscopy test results show that palygorskite is beneficial for the movement of photogenic charge carrier in Zn-In LDO/ZnS/In₂S₃ composites. After being subjected to a simulate visible light irradiation for 60 min, the 50% PGS@Zn-In LDO/ZnS/In₂S₃-2 composite as photocatalyst can even show a degradation rate up to 99.1% for methyl orange, exhibiting the composite possess better catalytic stability. In contrast, the common cations and anions in solution hardly effect on the photodegradation reaction except H₂PO₄^-. It is proposed that the superoxide radicals and vacancies may played a key role in the photocatalytic degradation reaction of MO. Therefore, it may be expected that the degradation rate of acid fuchsin, crystal violet, rhodamine B, malachite green and methylene blue and other common dyes is not less than 97.2% in the same testing conditions.

Key words： composites industrial catalysis dye wastewater photocatalytic degradation palygorskite supported Zn-In LDO/ZnS/In₂S₃

收稿日期: 2024-06-12

ZTFLH:

O649.4

基金资助:国家自然科学基金(21865031);甘肃省高校产业支撑计划(2023CYZC-18)

通讯作者: 常玥，教授，cy70@sina.com，研究方向为功能材料的制备及应用

Corresponding author: CHANG Yue, Tel: 13919331971, E-mail:cy70@sina.com

作者简介: 马雪娥，女，2000年生，硕士生

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https://www.cjmr.org/CN/10.11901/1005.3093.2024.273 或 https://www.cjmr.org/CN/Y2025/V39/I6/413

图1 Zn-In LDH、Zn-In LDO、LDO/ZS/IS-2和50%PGS@LDO/ZS/IS-2的SEM照片以及Zn-In LDO和50%PGS@LDO/ZS/IS-2的TEM

图2 Zn-In LDO、LDO/ZS/IS-2、50%PGS@LDO/ZS/IS-2的XRD谱

图3 Zn-In LDO、50%PGS@LDO/ZS/IS-2的XPS光谱与In 3d、Zn 2p、S 2p的高分辨率XPS光谱

表1 不同材料的比表面积、孔容及孔径

图4 不同材料的N2吸附-脱附等温线和相应孔径分布曲线

图5 不同样品的紫外-可见漫反射光谱和相应的禁带宽度

图6 不同样品的光致发光光谱以及Zn-In LDO、LDO/ZS/IS-2和50%PGS@LDO/ZS/IS-2的EIS谱

图7 不同硫化量的LDO/ZS/IS对MO的降解和拟一级动力学曲线

图8 PGS@LDO/ZS/IS-2对MO光催化降解的影响以及50%PGS@LDO/ZS/IS-2对不同染料的降解

图9 催化剂用量和染料初始浓度对光催化反应的影响

图10 不同阳离子和阴离子对MO光催化反应的影响

图11 50%PGS@LDO/ZS/IS-2复合材料的循环稳定性

表2 可见光下不同光催化剂对MO的光降解

图12 活性基团对光催化降解性能的影响

图13 光催化降解机理

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