摘要
采用还原氧化石墨烯(RGO)和铜基金属有机物框架材料(Cu-BTC)同时对TiO_(2)进行改性,显著提升其光活性。通过SEM观察复合光催化剂材料的形态,并采用罗丹明-B作为模拟污染物对复合物的可见光催化性能进行估计。进一步通过分析光生电子寿命和电子顺磁共振谱,揭示复合物中RGO和Cu-BTC的作用及光催化机理。最后通过优化各组分的质量分数实现协同作用,在紫外光和可见光照射条件下,罗丹明-B的降解率常数分别达到1.44×10^(−1)和9.2×10^(−2)min^(−1)。此外,复合光催化剂具有良好的循环使用稳定性。
Reduced graphene oxide(RGO)and Cu-BTC are adopted to modify TiO_(2) to promote photocatalytic performance.The morphologies of the as-prepared composites are obtained by SEM,and the rhodamine-B(RB)is employed to estimate the UV-and visible-light activities.Moreover,the lifetime of photoinduced electrons and EPR profiles of the resulting photocatalysts are recorded,revealing the functions of the RGO and Cu-BTC,and the corresponding photocatalytic mechanism is also proposed.After optimizing the mass fractions of various components to achieve the synergy,the rate constants of RB under UV-and visible-light illumination reach 1.44×10^(−1) and 9.2×10^(−2 )min^(−1),respectively.High recycling and using stability of the optimized sample indicates the potential application prospect.
作者
马婷婷
孙康宁
韩微笑
陆蓓蓓
李森
唐波
MA Tingting;SUN Kangning;HAN Weixiao;LU Beibei;LI Sen;TANG Bo(School of Energy,School of Petroleum and Natural Gas Engineering,Changzhou University,213164,China)
出处
《真空科学与技术学报》
CAS
CSCD
北大核心
2024年第1期87-93,共7页
Chinese Journal of Vacuum Science and Technology
基金
国家自然科学基金资助项目(51506012)
江苏省青蓝工程资助项目(SCZ1908200013)。
