聊城大学学报（自然科学版）2024，Vol.37Issue(3)：34-41,8.DOI:10.19728/j.issn1672-6634.2023090005
物相调控对铌酸钠纳米棒压电-弱可见光协同催化的优化作用
Phase Engineering of Sodium Niobate Nanorods for Weak Visible-light Photo-Piezoelectric Synergistic Catalyst Optimization
摘要
Abstract
Semiconductors can absorb light to produce electron hole pairs,and degrade environmental waste via photocatalytic process.However,the catalytic efficiency is limited by environmental light condi-tions and weather.Therefore,it is necessary to develop catalysts that can synergistically employ water wave and light energy in the environment to effectively improve the degradation efficiency of pollutants.Sodium niobite with perovskite structure shows great potential in such photo-piezocatalysis owing to its suitable energy gap and piezoelectric properties.In this work,two sodium niobate nanorods with different phases have been synthesized via a hydrothermal method.Although both of the sodium niobite nanorods have the similar photocatalytic activity,compared to NaNbO3,Na7(H3O)Nb6O1914(H2O)shows higher piezoelectric properties,which promotes the separation of photogenerated electron hole pairs in the process of synergistic piezo-photocatalysis,and greatly improved the degradation efficiency of antibiotics in water.The phase regulation and catalytic mechanism of the materials were further studied,and it was revealed that the holes and hydroxyl radicals are critical in the catalytic process.The results can provide guide for the design and optimization of high efficiency piezo-photo-collaborative catalysts.关键词
铌酸钠/压电-光催化/载流子分离/压电效应Key words
sodium niobate/piezo-photocatalyst/carrier separation/piezoelectric effect分类
化学化工引用本文复制引用
刘洋,张淑乐,李欣玥,刘嫣然,卢佳杉,卢相扬,许柘宓..物相调控对铌酸钠纳米棒压电-弱可见光协同催化的优化作用[J].聊城大学学报（自然科学版）,2024,37(3):34-41,8.基金项目
国家自然科学基金项目(52302160) （52302160）
2023年大学生科学研究与创业行动计划项目(X027)资助 （X027）
