摘要
采用“一锅法”制备了C/ZnFe_(2)O_(4)复合光催化剂,并利用XRD、TEM、BET等多种表征手段对其晶体结构、微观形貌和光电性能进行了检测。通过降解水中的罗丹明B(RhB),评价了C/ZnFe_(2)O_(4)的光催化活性。结果表明:C/ZnFe_(2)O_(4)的晶型结构以ZnFe_(2)O_(4)的立方尖晶石型结构为主。C的掺杂,有效提升了ZnFe_(2)O_(4)的比表面积和对可见光的吸收性能,较好地抑制了光生载流子的复合概率,从而显著提高了C/ZnFe_(2)O_(4)的可见光催化性能。C/ZnFe_(2)O_(4)复合光催化剂对RhB的降解效果优于纯ZnFe_(2)O_(4),在掺杂量为3.21 wt%时具有最佳的光催化活性。可见光照射100 min后C/ZnFe_(2)O_(4)对RhB的降解率可达98.6%。经过4次循环后,C/ZnFe_(2)O_(4)仍能降解92.7%的RhB,表明C/ZnFe_(2)O_(4)复合催化剂的理化性能稳定。
In this study,C/ZnFe_(2)O_(4) composites were synthesized using the one-pot method and various characterization methods were employed to study their crystal structure,micromorphology,and optoelectronic properties.For the photocatalytic evaluation,Rhodamine B(RhB)was chosen as the degradation target.The results of the characterization study reveal that the synthetic C/ZnFe_(2)O_(4) composites possess a ZnFe_(2)O_(4) cubic spinel structure.The incorporation of C into the ZnFe_(2)O_(4)lattice significantly enhances the specific surface area and visible light absorption performance,thereby reducing the probability of photogenerated carrier recombination.As a result,the photocatalytic activity of C/ZnFe_(2)O_(4) composites under visible light irradiation is significantly enhanced.The C/ZnFe_(2)O_(4) composite photocatalysts exhibit superior degradation efficiency for RhB compared to pure ZnFe_(2)O_(4),with optimal photocatalytic activity observed at a C content of 3.21wt%.After 100 minutes of visible light irradiation,the degradation rate of RhB by C/ZnFe_(2)O_(4) can reach 98.6%.Moreover,the C/ZnFe_(2)O_(4) composite catalyst maintained its photocatalytic activity after four cycles,with a degradation rate of 92.7%for RhB,indicating its excellent stability.
作者
左广玲
陈沛桢
杜佳
王明辉
叶红勇
ZUO Guang-ling;CHEN Pei-zhen;DU Jia;WANG Ming-hui;YE Hong-yong(School of Biological and Chemical Engineering,Nanyang Institute of Technology,Nanyang 473000,China;Henan Key Laboratory of Industrial Microbial Resources and Fermentation Technology,Nanyang 473000,China)
出处
《南阳理工学院学报》
2025年第4期79-83,95,共6页
Journal of Nanyang Institute of Technology
基金
国家自然科学基金项目(22201146)。
