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Green synthesis of iron oxide nanoparticle using Carica papaya leaf extract: application for photocatalytic degradation of remazol yellow RR dye and antibacterial activity

机译:Carica Pagaya叶提取物的氧化铁纳米粒子的绿色合成:雷达唑黄RR染料光催化降解及抗菌活性的应用

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摘要

Synthesis of iron oxide nanoparticles by the recently developed green approach is extremely promising because of its non-toxicity and environmentally friendly behavior. In this study, nano scaled iron oxide particles (α-Fe O ) were synthesized from hexahydrate ferric chloride (FeCl .6H O) with the addition of papaya ( ) leaf extract under atmospheric conditions. The synthesis of iron oxide nanoparticles was confirmed by systematic characterization using FTIR, XRD, FESEM, EDX and TGA studies. The removal efficiency of remazol yellow RR dye with the synthesized iron oxide nanoparticles as a photocatalyst was determined along with emphasizing on the parameters of catalyst dosage, initial dye concentration and pH. Increasing the dose of iron oxide nanoparticles enhanced the decolorization of the dyes and a maximum 76.6% dye degradation was occurred at pH 2 after 6 h at a catalyst dose of 0.8 g/L. Unit removal capacity of the photocatalyst was found to be 340 mg/g at dye concentration of 70 ppm and at a catalyst dose of 0.4 g/L. The synthesized nanoparticles showed moderate antibacterial activity against spp. spp. bacterial strains. Although the cytotoxic effect of nanoparticles against Hela, BHK-21 and Vero cell line was found to be toxic at maximum doses but it can be considered for tumor cell damage because it showed excellent activity against the Hela and BHK-21 cell lines.
机译:由于其非毒性和环保行为,最近开发的绿色方法的合成氧化铁纳米粒子是非常有前途的。在该研究中,纳米缩放的氧化铁颗粒(α-Fe O)由六水氯化铁(FECL.6H O)合成,加入番木瓜()叶提取物在大气条件下。通过使用FTIR,XRD,FESEM,EDX和TGA研究来证实氧化铁纳米粒子的合成。确定与合成的氧化铁纳米颗粒作为光催化剂的雷达唑黄RR染料的去除效率随着催化剂剂量,初始染料浓度和pH的参数测定。增加氧化铁纳米颗粒的剂量增强了染料的脱色,在0.8g / L的催化剂剂量的6小时后,在pH 2下发生最大76.6%的染料劣化。将光催化剂的单位去除能力以70ppm的染料浓度为340mg / g,催化剂剂量为0.4g / l。合成的纳米颗粒显示出对SPP的中度抗菌活性。 SPP。细菌菌株。虽然纳米颗粒对Hela,BHK-21和VERO细胞系的细胞毒性作用被发现为最大剂量毒性,但可以考虑肿瘤细胞损伤,因为它显示出对Hela和BHK-21细胞系的优异活性。

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