摘要
以钼酸钠为钼源、硫脲为硫源,采用水热法制备二硫化钼/还原氧化石墨烯(MoS_(2)/rGO)复合材料,利用X射线衍射仪、扫描电子显微镜、傅里叶变换红外光谱仪等对复合材料进行表征和分析,通过有机染料罗丹明B(RhB)的光降解实验评价了复合材料的光催化性能。结果表明:在反应时间16h、反应温度220℃、活性组分钼酸钠和硫脲含量为1.5mmol和3mmol的条件下,光照100min后MoS_(2)/rGO复合材料对RhB降解率达到99.33%,相比MoS_(2)降解率有较大提高。这主要是由于石墨烯作为载体提供了更大的比表面积,暴露了更多的催化活性中心,有利于复合材料中光生电子和空穴的有效转移和快速分离。
MoS_(2)/rGO composites were prepared by hydrothermal method with sodium molybdate as molybdenum source and thiourea as sulfur source.The catalysts were characterized and analyzed by XRD,SEM and FT-IR.The photocatalytic performance for organic dye Rhodamine B(RhB)was evaluated by photodegradation experiments.The results showed that under the conditions of 16h reaction time,220℃reaction temperature,1.5mmol of sodium molybdate and 3 mmol of thiourea active component,the degradation rate of RhB by the MoS_(2)/rGO composites could reach 99.33%after 100min illumination,which was higher than that of MoS_(2).This was mainly due to the larger specific surface area provided by graphene as a carrier,exposing more catalytic active centers,which was conducive to the efficient transfer and rapid separation of photogenerated electrons and holes in the composite.
作者
徐海升
任哲辰
李善建
丁丽芹
Xu Haisheng;Ren Zhechen;Li Shanjian;Ding Liqin(College of Chemistry and Chemical Engineering,Xi'an Shiyou University,Xi'an 710065;Shaanxi Engineering Research Center of Green Low-carbon Energy Materials and Processes,Xi'an 710065;Xi'an Key Laboratory of Low-carbon Utilization for High-carbon Resources,Xi'an 710065)
出处
《化工新型材料》
北大核心
2026年第1期207-212,共6页
New Chemical Materials
基金
陕西省自然科学基础研究计划项目(2023-JC-YB-118)
西安石油大学研究生创新与实践能力培养计划项目(YCS23213082)。
关键词
石墨烯
钼酸钠
硫脲
光催化
降解
graphene
sodium molybdate
thiourea
photocatalysis
degradation
