Removal of Pb(II) ions by cellulose modified-LaFeO3 sorbents from different biomasses

被引：3
作者：
Ali, Shimaa M. [1 ]
El Mansop, Mohamed A. [1 ]
Galal, Ahmed [1 ]
El Wahab, Soha M. Abd [2 ]
El-Etr, Wafaa M. T. [3 ]
El-Abdeen, Hanaa A. Zein [3 ]
机构：
[1] Cairo Univ, Fac Sci, Chem Dept, Giza 12613, Egypt
[2] Cairo Univ, Fac Sci, Phys Dept, Giza 12613, Egypt
[3] Agr Res Ctr ARC, Soil Water & Environm Res Inst, Giza 12613, Egypt
来源：
BMC CHEMISTRY | 2023年 / 17卷 / 01期
关键词：
LaFeO3; perovskite; Cellulose-modified synthesis method; Biomass type; Adsorption; Water decontamination; CATALYTIC-ACTIVITY; AQUEOUS-SOLUTIONS; WASTE-WATER; ADSORPTION; ADSORBENTS; ZINC; LEAD;
D O I：
10.1186/s13065-023-01066-2
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
LaFeO3 perovskite is prepared by the cellulose-modified microwave-assisted citrate method using two different biomasses as a cellulose source; rice straw (RS) and banana peel (BP). The prepared samples are assigned as LaFeO3/cellulose-RS and as LaFeO3/cellulose-BP, respectively. Raman Spectra prove the presence of perovskite and cellulose phases, as well as biochar resulted from the thermal treatment of the cellulose. LaFeO3/cellulose-RS has a cauliflower morphology while, two phases are observed for LaFeO3/cellulose-BP, mesoporous cellulose phase and octahedral LaFeO3 nanoparticles as shown by scanning electron microscope (SEM) images. LaFeO3/cellulose-BP has higher porosity and larger BET surface area than LaFeO3/cellulose-RS. Both samples are applied for the removal of Pb(II) ions from aqueous solution by adsorption. The adsorption follows Langmuir isotherm, with maximum adsorption capacities of 524 and 730 mg/g for LaFeO3/cellulose-RS and LaFeO3/cellulose-BP, respectively. Cellulose precursors from different biomasses affect structural and morphological properties of LaFeO3/cellulose samples as well as the sorption performance for Pb(II) ions. BP is more recommended than RS, as a biomass, in the present study.
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页数：9
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