| 廖文政,郑涛,陶珊珊,江昊,杨水金,杨赟.MoS2/g-C3N4复合光催化剂的构建及其可见光催化性能研究[J].井冈山大学自然版,2024,45(3):19-25 |
| MoS2/g-C3N4复合光催化剂的构建及其可见光催化性能研究 |
| PREPARATION OF MoS2/g-C3N4 COMPOSITE PHOTOCATALYST AND ITS VISIBLE LIGHT CATALYTIC PERFORMANCE |
| 投稿时间：2024-02-04 修订日期：2024-04-19 |
| DOI：10.3969/j.issn.1674-8085.2024.03.004 |
| 中文关键词: g-C3N4 纳米片 异质结构 光催化降解 水热法 |
| 英文关键词: g-C3N4 nanosheets heterogeneous structure construction photocatalytic degradation hydrothermal method |
| 基金项目:国家自然科学基金面上项目(21673069)；国家级大学生创新创业训练计划项目(202416) |
| 作者 | 单位 | | 廖文政 | 汉江师范学院化学与环境工程学院, 湖北, 十堰 442000 | | 郑涛 | 汉江师范学院化学与环境工程学院, 湖北, 十堰 442000 | | 陶珊珊 | 汉江师范学院化学与环境工程学院, 湖北, 十堰 442000 | | 江昊 | 汉江师范学院化学与环境工程学院, 湖北, 十堰 442000 | | 杨水金 | 湖北师范大学化学化工学院, 湖北, 黄石 435002 | | 杨赟 | 汉江师范学院化学与环境工程学院, 湖北, 十堰 442000 |
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| 中文摘要: |
| 本研究通过水热合成法和超声法成功构建MoS2/g-C3N4复合型光催化剂。通过X射线粉末衍射（XRD）、扫描电子显微镜（SEM）、红外光谱（IR）以及紫外-可见吸收光谱（UV-Vis）表征技术对复合型催化剂的物理化学特性进行分析。以光催化降解罗丹明B（RhB）为探针反应，探究可见光下不同质量比的MoS2/g-C3N4复合型光催化剂对RhB光催化降解性能的影响。实验结果表明，当MoS2负载量为30%，光催化降解80 min时，10 mg/L的RhB溶液的降解率为96.7%。MoS2/g-C3N4复合催化剂相比于纯的g-C3N4，MoS2降解RhB的效果有显著地提高。光催化降解性能的提升归因于两半导体间MoS2和g-C3N4异质结界面构筑，有效地抑制光生电子（e-）和空穴（h+）的复合，从而提高复合型光催化剂MoS2/g-C3N4的光催化性能。 |
| 英文摘要: |
| In this study, hydrothermal synthesis and ultrasonic method were used to construct MoS2/g-C3N4composite catalyst. The structure of the composite catalyst was characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), infrared spectroscopy (IR) and UV-Vis. The photocatalytic degradation of Rhodamine B (RhB) was investigated by using MoS2/g-C3N4 composite catalyst with different mass ratio as a probe. The results showed that the degradation rate of 10 mg/L RhB solution was 96.7% when MoS2load was 30% and photocatalyzed for 80 min. Compared with pure g-C3N4, MoS2/g-C3N4composite catalyst significantly improved the degradation effect of MoS2 on RhB. The improvement of photocatalytic degradation performance can be attributed to the fact that the heterojunction interface of MoS2 and g-C3N4 between the two semiconductors effectively inhibits the recombination of photogenerated electrons (e-) and holes (h⁺). Finally, by reasoning the photocatalytic degradation mechanism of the composite photocatalyst, the charge transfer mechanism of MoS2/g-C3N4 is the same as that of type II heterojunction, so it can be concluded that the composite belongs to type II heterojunction. |
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