Biomass Conversion and Biorefinery ( IF 3.5 ) Pub Date : 2022-01-15 , DOI: 10.1007/s13399-021-02189-z Yash Shah 1 , Manisha Maharana 1 , Sujit Sen 1
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The urgent need to develop water treatment technologies that are cost-effective and environment-friendly has led green, or plant-mediated synthesis methods, to garner significant attention. In this work, the polyphenolic compounds present in the plant biomaterial have been studied to influence the reduction and stabilization of the iron oxide particles [FePPE] that have been further experimented for application in the removal of an organic pollutant, i.e., Rhodamine B (RB), from water. In addition, the material properties of the synthesized FePPE have been studied and reported using various characterization techniques such as FTIR, UV–Vis, SEM, XRD, and VSM. The SEM analysis revealed that most of the FePPE particles are in adherence and make a chain having a small size ranging from 0.085 to 0.2 μm. XRD results displayed the presence of Fe2O3, Fe3O4, and FeO phases. FTIR bands corresponded to the bending vibrations of O–H (3689 cm−1), C-H (3124 cm−1), and C = C (1844 cm−1) bonds. The values of maximum saturation magnetization and coercive field from VSM were 89.8 emu/g and 5 Oe, respectively, consistent with those obtained for iron oxide in previous studies. A remarkable photo-removal efficiency of about 95% has been achieved in 60 min with around 80% removal in the first 5 min, using the Fenton-like activity of FePPE as a catalyst and UV irradiation. The removal efficiency displayed by FePPE particles demonstrates the stabilizing and reducing tendencies of polyphenolic compounds/biomolecules present in the Peltophorum pterocarpum leaf extract, which in turn provides insights into the valorization of biomass for environmental remediation.
Graphical abstract
中文翻译：
紫檀叶提取物介导绿色合成新型氧化铁颗粒用于光催化和催化去除有机污染物
迫切需要开发具有成本效益和环境友好的水处理技术，这导致绿色或植物介导的合成方法受到广泛关注。在这项工作中，研究了植物生物材料中存在的多酚化合物对氧化铁颗粒 [FePPE] 的还原和稳定性的影响，这些颗粒已被进一步试验用于去除有机污染物，即罗丹明 B (RB )，来自水。此外，合成的 FePPE 的材料特性已经使用各种表征技术（如 FTIR、UV-Vis、SEM、XRD 和 VSM）进行了研究和报告。SEM 分析表明，大部分 FePPE 颗粒粘附并形成具有 0.085 至 0.2 μm 的小尺寸链。XRD 结果显示 Fe 的存在2 O 3、Fe 3 O 4和FeO相。FTIR 波段对应于 O-H (3689 cm -1 )、CH (3124 cm -1 ) 和 C = C (1844 cm -1 ) 的弯曲振动) 债券。来自 VSM 的最大饱和磁化强度和矫顽场值分别为 89.8 emu/g 和 5 Oe，与先前研究中氧化铁获得的值一致。使用 FePPE 的类芬顿活性作为催化剂和紫外线照射，在 60 分钟内实现了约 95% 的显着光去除效率，在前 5 分钟内去除了约 80%。FePPE 颗粒显示的去除效率证明了Peltophorum pterocarpum叶提取物中存在的多酚化合物/生物分子的稳定和减少趋势，这反过来又为环境修复中生物质的增值提供了见解。
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