摘要
煅烧法制备了溴离子掺杂的g-C_(3)N_(4)基复合材料,在可见光下降解木质素模型化合物及木质素,通过X射线衍射(XRD)、扫描电子显微镜(SEM)对材料进行了表征,探究了溴离子掺杂比例、反应溶剂、反应气氛对底物转化率的影响,并利用自由基捕获实验探究其光催化反应机理。结果表明,g-C_(3)N_(4)与溴化铵的摩尔比为1∶3制备复合材料,乙腈作为溶剂,氧气作为反应气氛时,木质素模型化合物的转化率可达96.3%,在可见光下产生的空穴在催化过程中起到了重要作用。
The bromide ion-doped g-C_(3)N_(4) based composite material was prepared by the calcination method to degrade lignin model compounds and lignin.The material was characterized by X-ray diffraction(XRD)and scanning electron microscope(SEM).The effects of bromide ion doping ratio,reaction solvent,and reaction atmosphere on the conversion rate of the substrate are explored,and the photocatalytic reaction mechanism is explored by capturing experiments.The result shows that when the molar ratio of g-C_(3)N_(4) to ammonium bromide is 1∶3,acetonitrile is used as the solvent,and oxygen is used as the reaction atmosphere,the conversion rate of the lignin model compound can reach 96.3%and the holes generated under visible light play an important role.
作者
马天培
朱棋
徐帅
周鲁平
李宇亮
MA Tian-pei;ZHU Qi;XU Shuai;ZHOU Lu-ping;LI Yu-liang(School of Water Resources and Environment,Chang’an University,Xi’an 710054,China;Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education,Chang’an University,Xi’an 710054,China)
出处
《应用化工》
CAS
CSCD
北大核心
2022年第3期737-740,共4页
Applied Chemical Industry
基金
陕西省自然科学基础研究计划(2017JM2014)。
