南华大学学报（自然科学版）2024，Vol.38Issue(2)：82-88,7.DOI:10.19431/j.cnki.1673-0062.2024.02.011
Ti3+-TiO2@NGQDs纳米复合光催化剂的制备及其可见光降解双酚A的研究
Preparation of Ti3+-TiO2@NGQDs Nanocomposite Photocatalysts and its Visible Light Degradation of Bisphenol A
摘要
Abstract
Ti3+self-doped TiO2 loaded nitrogen doped graphene quantum dots(Ti3+-TiO2@NGQDs)nanocomposite photocatalyst was synthesized through a two-step hydrothermal method,characterized in detail by XRD,TEM,XPS,and UV vis-DRS,and its perform-ance for visible light degradation of bisphenol A solution was studied.The results indicated that the degradation rate of BPA by Ti3+-TiO2@NGQDs composite photocatalysts was as high as 91.9% within 30 minutes of visible light irradiation.The apparent rate constants(k)of bisphenol A degradation with Ti3+-TiO2@NGQDs composite was about 33.6 times that of pure TiO2 and 6.4 times that of Ti3+-TiO2,which was attributed to the synergistic effect of its stronger visible light absorption and faster photo induced charge transfer and separation.The capture experiment results indicated that h+and·OH were the main ac-tive substances in the degradation of bisphenol A by Ti3+-TiO2@NGQDs nanocomposite photocatalyst.In addition,the reusability test results indicated that Ti3+-TiO2@NGQDs nanocomposite photocatalyst had very high stability.关键词
Ti3+自掺杂/TiO2/氮掺杂石墨烯量子点/双酚A/光降解性能Key words
Ti3+self-doped/TiO2/nitrogen doped graphene quantum dots/bisphenol A/photodegradation activity分类
化学化工引用本文复制引用
廖范武,唐新德..Ti3+-TiO2@NGQDs纳米复合光催化剂的制备及其可见光降解双酚A的研究[J].南华大学学报（自然科学版）,2024,38(2):82-88,7.基金项目
湖南省自然科学基金资助项目(2021JJ50084) （2021JJ50084）
湖南省教育厅重点资助项目(19A119) （19A119）
