摘要
以2-氨基对苯二甲酸(H_(2)ATA)为配体,通过溶剂热法合成了Zr基MOF:NH_(2)-Ui O-66,继而以氯化钨为前驱体,通过溶剂热法实现了富含氧空位的缺陷氧化钨(W_(18)O_(49))在NH_(2)-Ui O-66上的原位生长,构建了具有典型Ⅱ型异质结的复合光催化剂W_(18)O_(49)/NH_(2)-Ui O-66。通过粉末X射线衍射、扫描电子显微镜、X射线光电子能谱和紫外可见漫反射光谱对催化剂的组成与结构进行了表征。在室温常压、模拟太阳光下,以氧化苯乙烯为模型底物,对所有样品的光催化活性进行了考察,W_(18)O_(49)/NH_(2)-Ui O-66展现了最高的碳酸苯乙烯酯产率(58 mmol·g^(-1)·h^(-1))。
Zr-based metal-organic framework(MOF)NH_(2)-UiO-66 was first synthesized by a solvothermal method using 2-amino terephthalic acid(H_(2)ATA)as the ligand.The efficient W_(18)O_(49)/NH_(2)-UiO-66 photocatalysts with a typi-cal typeⅡheterojunction were then constructed by in-situ growth of the oxygen vacancy-rich defective tungsten oxide(W_(18)O_(49))on NH_(2)-UiO-66,using tungsten chloride as the precursor.The composition and structure of the cata-lysts were characterized by a series of measurements,including powder X-ray diffraction,scanning electron micros-copy,X-ray photoelectron spectroscopy,and UV-Vis diffuse reflectance spectroscopy.At room temperature and atmospheric pressure,the photoactivity of all the catalysts was examined under simulated sunlight with styrene oxide as the model substrate.W_(18)O_(49)/NH_(2)-UiO-66 exhibited the highest yield of styrene carbonate(58 mmol·g^(-1)·h^(-1)).The introduction of NH_(2)-UiO-66 expanded the specific surface area,CO_(2) adsorption capacity,light harvesting ability,and photogenerated charge carriers transfer of W_(18)O_(49).
作者
程若霖
王浩然
任静
马莹莹
梁华根
CHENG Ruolin;WANG Haoran;REN Jing;MA Yingying;LIANG Huagen(Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization,Carbon Neutrality Institute,China University of Mining and Technology,Xuzhou,Jiangsu 221008,China;School of Information and Control Engineering,China University of Mining and Technology,Xuzhou,Jiangsu 221116,China;Training Center,Jiangsu Provincial Xuzhou Pharmaceutical Vocational College,Xuzhou,Jiangsu 221116,China;School of Materials Science and Physics,China University of Mining and Technology,Xuzhou,Jiangsu 221008,China)
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2024年第3期523-532,共10页
Chinese Journal of Inorganic Chemistry
基金
中央高校基本科研业务费专项资金青年科技基金项目(No.2023QN1067)
江苏省双创博士计划资助。
