摘要
依次用溶剂热法和水热法制备得到暴露(101)晶面的八面双锥体二氧化钛OBP-TiO2和不同碳负载量的N-CDs/OBP-TiO2复合催化剂,以及暴露(001)晶面的纳米片二氧化钛TNS和不同碳负载量的N-CDs/TNS复合催化剂。利用TEM、XRD、XPS等表征手段对这2类复合催化剂的形貌结构、化学成分等作了鉴定。系统研究了碳量子点负载量对可见光降解RhB的光催化性能影响。实验发现,由于N-CDs的加入,均能较大提高2类复合催化剂的光催化性能。(101)高裸露晶面N-CDs/OBP-TiO2比(001)高裸露晶面N-CDs/TNS的光催化活性高。
Carbon quantum dots doped octahedral bipyramids TiO2 with high exposed(101)reactive facets and carbon quantum dots doped nanosheets TiO2 with high exposed(001)reactive facets were successfully fabricated by facile solvothermal process.The catalysts were characterized using TEM,XRD and XPS measurements.They confirm that the carbon quantum dots were uniformly integrated to TiO2.The catalytic activity of the as-prepared catalysts in degradation of rhodamine B in aqueous solution under visible light irradiation(λ≥400 nm)was systematically investigated.The experiments show that the doping of carbon quantum dots in TiO2 can substantially improve the photo degradation efficiency relative to pure TiO2,both for octahedral bipyramids TiO2 and nanosheets TiO2.Generally,the photodegradation efficiency of(101)facet exposed octahedral bipyramids TiO2 is prevailing over that of(001)facet exposed nanosheets TiO2.
作者
吴冰钊
黄红琴
蒋彩英
王惠钢
郑旭明
WU Bing-Zhao;HUANG Hong-Qin;JIANG Cai-Ying;WANG Hui-Gang;ZHENG Xu-Ming(Department of Chemistry,and Key Laboratory of Advanced Textiles Materials and Manufacture Technology of the Ministry of Education,and Engineering Research Center for Eco-Dyeing and Finishing of Textiles of the Ministry of Education,Zhejiang Sci-Tech University,Hangzhou 310018,China;Institute of Life Science,Zhejiang Sci-Tech University,Hangzhou 310018,China)
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2020年第3期443-450,共8页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金(No.21473161,21873084)
浙江省自然科学基金(No.LZ17B030001)资助项目
关键词
八面双锥体二氧化钛
纳米片二氧化钛
碳量子点
光降解
溶剂热法
octahedral bipyramids TiO2
nanosheets TiO2
carbon quantum dots
photodegradation
solvothermal process
