摘要
通过原位沉淀法将Ag_(3)PO_(4)沉积在MoS_(2)表面,制备Ag_(3)PO_(4)/MoS_(2)复合光催化剂。通过X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)、荧光光谱(PL)、紫外-可见漫反射光谱(UV-Vis DRS)等方法对其进行表征。以罗丹明B(RhB)为模拟污染物,考察Ag_(3)PO_(4)/MoS_(2)对RhB降解率的影响。结果表明:Ag_(3)PO_(4)呈类球状结构,颗粒直径约为100~200nm,且附着在绒球状MoS_(2)表面,两者有机结合。质量分数为1%的Ag_(3)PO_(4)/MoS_(2)光催化活性较好,可见光照60min,对RhB降解率达到97.95%。降解机理研究表明,h^(+)与·O_(2)-是降解RhB的主要活性物质。Ag_(3)PO_(4)/MoS_(2)光催化剂稳定性较好,重复使用4次,对RhB降解率仍可达81.03%。
Ag_(3)PO_(4)/MoS_(2)composite photocatalysts were prepared by in-situ precipitation of Ag_(3)PO_(4)namoparticles on the surface of MoS_(2),and characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM),photoluminescence(PL)and UV-Vis diffuse reflection spectrometry(UV-Vis DRS)techniques.The results showed that Ag_(3)PO_(4)presented sphere-like structure with a diameter of 100~200 nm,and adhered to the surface of fluff sphere-like MoS_(2).The photodegradation effect of Ag_(3)PO_(4)/MoS_(2)was studied by using rhodamine B(RhB)as the simulated pollutant.The results showed that the photocatalytic activity of Ag_(3)PO_(4)/MoS_(2)-1%was better with RhB degradation rate of 97.95%after 60 min of visible light irradiation.The photodegradation mechanism study revealed that h^(+)and·O_(2)-were the main active species in photodegrading RhB.Ag_(3)PO_(4)/MoS_(2)indicated high stability,as the degradation rate retained 81.03%after repeated use of the same photocatalyst for 4 times.
作者
吴福礼
李兵
黄有鹏
杨本宏
Wu Fuli;Li Bing;Huang;Youpeng;Yang Benhong(School of Biology Food and Environmental Engineering,Hefei University,Hefei 230601;School of Energy Materials and Chemical Engineering,Hefei University,Hefei 230601)
出处
《化工新型材料》
CAS
CSCD
北大核心
2021年第9期202-207,共6页
New Chemical Materials
基金
安徽省科技攻关后续项目(0392118031)。
