光催化
材料科学
异质结
光降解
罗丹明B
纳米棒
表面等离子共振
纳米颗粒
化学工程
降级(电信)
复合数
催化作用
光化学
纳米技术
光电子学
复合材料
化学
生物化学
工程类
电信
计算机科学
作者
Shanshan Liu,Shaoli Cheng,Jiale Zheng,Junhui Liu,Ruoping Li
摘要
ZnO/g-C3N4 heterojunction modified with Ag nanoparticles (ZnO/CN/Ag) was synthesized by depositing ZnO nanorods/Ag nanoparticles onto g-C3N4 nanosheets. Under xenon lamp irradiation, 99% of Rhodamine B (RhB) was degraded by ZnO/CN/Ag-5% composite within 30 min, which was much higher than the degradation efficiency of ZnO and ZnO/CN. The synergistic effect of g-C3N4 and ZnO, along with the localized surface plasmon resonance effect of Ag NPs, contributes to the improvement of photocatalytic performance. Ag nanoparticle provides another charge transfer path from g-C3N4 to ZnO, which speeds up the separation of electron–hole pairs. Meanwhile, the catalyst had good stability and recyclability. Finite-difference time-domain method and the density functional theory were used to obtain the charge transfer process. The photodegradation process has been studied in depth.
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