摘要
通过浸渍法和煅烧法相结合制备二硫化钼/石墨相氮化碳(MoS_(2)/g-C_(3)N_(4))催化剂。采用X射线衍射、扫描电镜、透射电镜、紫外可见漫反射光谱、稳态荧光光谱等手段对MoS_(2)/g-C_(3)N_(4)催化剂的晶型、形貌、光电化学性质进行了表征,并将MoS_(2)/g-C_(3)N_(4)催化剂应用于印染废水的处理。结果表明:MoS_(2)/g-C_(3)N_(4)催化剂呈现多孔的层状结构,对可见光有着较好的响应;在MoS_(2)/g-C_(3)N_(4)用量2.0 g/L、pH=6、反应时间120 min的光照条件下,MoS_(2)/g-C_(3)N_(4)催化剂对印染废水的色度去除率和化学需氧量(COD)去除率最高,分别为89.78%和65.57%,MoS_(2)/g-C_(3)N_(4)催化剂循环使用5次后对印染废水的色度去除率和COD去除率仍达到了77.28%和53.26%,具有良好的稳定性。
The MoS_(2)/g-C_(3)N_(4)catalyst was prepared by using the impregnation and calcination methods.Its crystal form,morphology and photoelectrochemical properties were characterized by using X-ray diffraction,scanning electron microscopy,transmission electron microscopy,ultraviolet-visible diffuse reflectance spectroscopy,steady fluorescence spectrum,respectively.The MoS_(2)/g-C_(3)N_(4)catalyst was applied to the treatment of printing and dyeing wastewater.The results showed that the MoS_(2)/g-C_(3)N_(4)catalyst had a porous layered structure and good response to visible light.Under the illumination conditions with its dosage of 2.0 g/L,pH=6 and the reaction time of 120 min,the MoS_(2)/g-C_(3)N_(4)catalyst had the highest chroma and chemical oxygen demand(COD)removal rates for printing and dyeing wastewater,which are 89.78%and 65.57%,respectively.After the MoS_(2)/g-C_(3)N_(4)catalyst was recycled for 5 times,the chroma and COD removal rates of printing and dyeing wastewater still reached 77.28%and 53.26%,respectively,indicating its good stability.
作者
卜义夫
刘思乐
杜文娟
田川
王思祺
万帅龙
BU Yifu;LIU Sile*;DU Wenjuan;TIAN Chuan;WANG Siqi;WAN Shuailong(Shenyang Institute of Science and Technology,Shenyang 110167,China;Shandong Feiyang EnvironmentalEngineering Limited Company,Jinan 250000,China)
出处
《皮革科学与工程》
CAS
北大核心
2023年第3期12-18,共7页
Leather Science and Engineering
基金
国家级大学生创新创业训练计划项目(202213621001)
辽宁省教育厅2022年高等学校基本科研项目面上项目(LJKM20221989)
沈阳科技学院科学研究重点项目(ZD-2023-01)
沈阳科技学院化学工程与工艺一流专业建设项目。
关键词
催化剂
光催化
印染废水
层状多孔
catalyst
photocatalysis
printing and dyeing wastewater
layered porous
