Facile green preparation of Y2O3 decorated with ZnFe2O4 using citrus limon (L.) osbeck leaf extract for photocatalytic degradation of malachite green

IF 7.5 Q1 CHEMISTRY, PHYSICAL
Suryani Eka Safitri, Yoki Yulizar
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引用次数: 0

Abstract

The Y2O3 decorated with ZnFe2O4 was successfully synthesized using Citrus limon (L.) Osbeck leaf extract for the first time. A modification of Y2O3 with ZnFe2O4 nanoparticles was carried out because Y2O3 is stable but has a wide band gap, making it less active in visible light. On the other hand, ZnFe2O4 has a small band gap and is cheap. The synthesized ZnFe2O4/Y2O3 nanocomposites, ZnFe2O4, and Y2O3 nanoparticles were characterized using FTIR, XRD, TEM, SEM, and DRS UV–Vis. TEM and DRS UV–Vis results show that the ZnFe2O4/Y2O3 nanocomposite particle has a size of 49,61 nm with a unique shape and an optical band gap of 2.08 eV. The photocatalytic activity of Y2O3, ZnFe2O4, and ZnFe2O4/Y2O3 was observed based on the photodegradation of malachite green (MG) dye under visible light. The results demonstrate that ZnFe2O4/Y2O3 can degrade MG with a photodegradation percentage of 95 % within 120 min, which is better than pure ZnFe2O4 and Y2O3. After the fourth cycle, the photodegradation percentage of MG by ZnFe2O4/Y2O3 remained at 88 %, demonstrating good reusability of ZnFe2O4/Y2O3 for photocatalytic degradation. These findings demonstrate that the use of ZnFe2O4 as a modifier may increase the photocatalytic performance of Y2O3.

利用柑橘柠檬(L. )奥斯贝克叶提取物轻松绿色制备饰有 ZnFe2O4 的 Y2O3,用于光催化降解孔雀石绿
利用柠檬(Citrus limon (L.) Osbeck)叶提取物首次成功合成了用 ZnFe2O4 装饰的 Y2O3。之所以用 ZnFe2O4 纳米粒子修饰 Y2O3,是因为 Y2O3 性能稳定,但带隙较宽,在可见光下的活性较低。另一方面,ZnFe2O4 的带隙小,价格便宜。对合成的 ZnFe2O4/Y2O3 纳米复合材料、ZnFe2O4 和 Y2O3 纳米粒子使用傅立叶变换红外光谱、XRD、TEM、SEM 和 DRS 紫外可见光谱进行了表征。TEM 和 DRS UV-Vis 结果表明,ZnFe2O4/Y2O3 纳米复合材料颗粒大小为 49.61 nm,形状独特,光带隙为 2.08 eV。根据孔雀石绿(MG)染料在可见光下的光降解情况,观察了 Y2O3、ZnFe2O4 和 ZnFe2O4/Y2O3 的光催化活性。结果表明,ZnFe2O4/Y2O3 能在 120 分钟内降解孔雀石绿,光降解率达 95%,优于纯 ZnFe2O4 和 Y2O3。在第四个循环后,ZnFe2O4/Y2O3 对 MG 的光降解率仍保持在 88%,这表明 ZnFe2O4/Y2O3 在光催化降解方面具有良好的重复使用性。这些研究结果表明,使用 ZnFe2O4 作为改性剂可提高 Y2O3 的光催化性能。
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来源期刊
CiteScore
8.10
自引率
1.60%
发文量
128
审稿时长
66 days
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