摘要
采用新颖的热缩聚法制备得到石墨相氮化碳(g-C_(3)N_(4)),通过表面修饰钼酸铋、硅藻土进行改性得到硅藻土/Bi_(2)MoO_(6)/g-C_(3)N_(4)复合光催化材料。借助SEM(扫描电子显微镜),EDS(能谱仪),XRD(X射线衍射仪),FTIR(傅里叶变换红外光谱仪),UVV1SDRS(紫外可见漫反射光谱仪),PL(光致发光光谱仪),比表面积及孔径测试仪和电化学工作站等多种仪器对复合材料进行表征,并研究了其降解废水中的盐酸四环素(TC)的光催化性能。结果表明,硅藻土/Bi_(2)MoO_(6)/g-C_(3)N_(4)复合材料表现了良好吸附光催化协同作用和优异的稳定性。在可见光照射下反应120 min对TC的降解率最高达到了95.3%,比二元复合材料Bi_(2)MoO_(6)/g-C_(3)N_(4)的89.1%及纯g-C_(3)N_(4)的66.3%均有较大提升。本研究为吸附光催化协同处理水中抗生素类提供了新思路。
Graphitic carbon nitride(g-C_(3)N_(4))was prepared by the facile thermal condensation method.Furthermore,the g-C_(3)N_(4) was modified with bismuth molybdate and diatomaceous earth to obtain a diatomaceous earth/Bi_(2)MoO_(6)/g-C_(3)N_(4) composite photocatalytic material.The composite material was characterized by SEM(scanning electron microscopy),EDS(energy dispersive spectrometer),XRD(X-ray diffraction),FT-IR(Fourier transform infrared spectroscopy),UV-Vis DRS(ultraviolet-visible diffuse reflectance spec-troscopy),PL(photoluminescence spectroscopy),specific surface area and aperture tester and electrochemical workstation.Moreo-ver,the photocatalytic performance of the catalyst was tested by degrading tetracycline hydrochloride(TC)in wastewater.The results showed that the diatomaceous earth/Bi_(2)MoO_(6)/g-C_(3)N_(4) composite exhibit excellent synergy effect of adsorption and photocatalysis as well as good stability.The removal efficiency of TC using visible light was up to 95.3%within 120 min,which was much higher than that of the binary composite material Bi_(2)MoO_(6)/g-C_(3)N_(4)(89.1%)and pure g-C_(3)N_(4)(66.3%).This study will provide new insights for the antibiotic treatment with synergy effect of adsorption-photocatalysis.
作者
余峰
李斯琪
袁家乐
钟韻童
郭文显
YU Feng;LI Si-qi;YUAN Jia-Le;ZHONG Yun-tong;UO Wen-xian(College of Urban Construction and Environment,Dongguan City University,Dongguan 523000,China)
出处
《化学研究与应用》
CAS
北大核心
2024年第6期1236-1244,共9页
Chemical Research and Application
基金
广东基础与应用基础研究基金(2019A1515110314)资助
东莞市社会发展科技项目(重点项目)(20211800904572)资助
广东省普通高校重点科研平台和项目(2021KTSCX191)资助
国家级大学生创新创业训练计划项目(项目编号:202113844001)资助
广东省科技创新战略专项资金(大学生科技创新培育项目)(pdjh2022b0742)资助。
