Green synthesis of α-Fe₂O₃ using Citrus reticulum peels extract and water decontamination from different organic pollutants

Review of Characteristics and Properties of Fe2o3/Sio2 as Water Pollution Prevention

“…Fe2O3 nanoparticles will show sensible photocatalytic degradation activity against totally different waste organic pollutants below visible irradiation. [19].…”

A review of green methods for phyto-fabrication of hematite (α-Fe2O3) nanoparticles and their characterization, properties, and applications

“…Hager and her co-workers [ 98 ] in 2017 issued their paper entitled “Green synthesis of α -Fe 2 O 3 using Citrus reticulum peels extract and water decontamination from different organic pollutants”, Mandarin peels “Citrus reticulum ” consider as a way for the recycling of domestic waste into a valuable product. The as-formation of α -HNPs was depicted using a UV-Vis spectrophotometer where an appearance of the broad peak in the range 318–608 nm with maximum absorbance at 384 nm; the energy band gap was calculated and found to be 2.38 eV.…”

“…aureus & S. typhimurium” [ 40 ] Pistachio leaf ( Pistacia vera L) Agricultural production “It promotes the seed vigor index of tomato seeds” [ 41 ] Salvadora persica Anticancer activity “Colon (HT-29) cancer cell lines at IC 50 = 125 μ g/mL” [ 43 ] Hippuric acid, Itaconic acid, Tyrosine amino acid Anticancer “Breast carcinoma cells (MCF-7 cell line) IC 50 at 3.10–3.81 μ g/mL” [ 44 ] Garlic extract Anticancer activity “Colorectal cancer (HCT 116), breast cancer (MCF-7) & cervical cancer (HeLa) at IC 50 found to be 230 μ g/mL, 346 μ g/mL and 285 μ g/mL respectively” [ 45 ] Rheum emodi root Antibacterial activity “E. coli and S. aureus” Anticancer activity “ Cervical cell at IC 50 = 41.90 μ g/mL” [ 46 ] Cyperus rotundus L. Catalytic activity “Reduction of 4-nitro-o-phenylenediamine” Photocatalytic activity “Congo red dye” [ 50 ] Green Tea (Camellia sinensis) leaves Solar cells [ 66 ] Sida cordifolia Antibacterial activity “ B. subtilis & S. aureus, E. coli & K. pneumonia ” [ 97 ] Mandarin peels “Citrus reticulum ” Photocatalytic activity [ 98 ] Ailanthus excelsa leaves Insecticidal agent “Green peach aphid at LC 50 = 1125 ppm” [ 109 ] Curcuma Photocatalytic activity “Methyl orange dye” [ 128 ] Tea leaves Photocatalytic activity “Methyl orange dye” [ 128 ] ...…”

“…Generally, the basic mechanism of formation for the NPs, which include nucleation and particle formation via plant extracts, is not recognizable till now. But there are a few appreciate suggestions that were being introduced for the formation mechanism interpretation that depending on complex formation after reduction/oxidation reaction for the iron ions at the first [ 97 , 98 , 99 ]. However, studies indicate that the phytoconstituents (primary and secondary metabolites) in the plant extract play a significant role in the biosynthesis of NPs.…”

Meteoric synthesis of Luminescent Fe2O3 Nanoparticles: A potential Cytotoxic, Antioxidant & Bactericidal agent

“…Hassan et al synthesized nanoparticles of α‐hematite successfully using the Ailanthus excelsa leaves as reducing and capping agent 18 . Iron Oxide Nano Particles synthesized from other plants products, like fruits of Passiflora tripatita , 20 Oolong tea, 21 floral extracts of Callistemon viminalis (bottle brush), 22 Citrus reticulum peels 23 etc are also reported. Apart from this, earlier in our work we reported the synthesis of Quantum dots of iron oxide using the Moringa olifera leaf extract 19 and the excellent luminescent properties of nano‐crystalline nano‐phosphors of zirconia using the leaf extracts of Syzigium cumini 24 …”