Ze [1,6]. The surface region of hematite was reported involving 100 m2 /g, as a result showing capability as adsorbent Tianeptine sodium salt site within the removal of cephalecin, acetylsalicylic acid, congo red, and heavy metals [2,3]. The hydrophilicity of hematite is reasonably high, helpful for the adsorption of many organic molecules in water [9]. Also, the presence of Fe3 ion and the surface OH group formed chemical and physical interactions with organic molecules [2,10]. Hematite was reported to stop flotation when utilized as adsorbent for oleate [4]. Antisteroidal agent waste, which include ibuprofen, polluted water and land when discharged from the hospitalCopyright: 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access post distributed beneath the terms and conditions of your Inventive Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).Materials 2021, 14, 6779. https://doi.org/10.3390/mahttps://www.mdpi.com/journal/materialsMaterials 2021, 14,two ofdrainage untreated [11]. Removal of ibuprofen was carried out by way of high temperature decomposition or with all the use of solvent [113]. The applied of solvent to eliminate ibuprofen is much less environmentally friendly; meanwhile, the high temperature decomposition process demands a big amount of energy. Apart from its overall performance as adsorbent, hematite has 2.1.3 eV band gap that is suitable as photocatalyst for photodegradation of pollutants [14]. The conduction band of hematite is composed of empty orbitals within the d band of Fe3 and also the valence band in the 3d crystal plane that was filled with Fe3 in the formation of 2p non-bonding orbitals [15]. The semiconductor house causes hematite to be broadly made use of as photocatalysts, pigments, and gas sensors [8,9,16]. Hematite is naturally out there in abundance, non-toxic to the environment, and its chemical activity is tremendously influenced by the various oxidation states. Hematite is usually synthesized using arc-discharge, micro-emulsion, thermal decomposition, hydrothermal synthesis, ball milling, sol el, electrolysis, and co-precipitation techniques [6]. An additional system that received increasing interest is preparation of iron oxide working with a green templating technique. The use of synthetic structure directing agents which include P-123, F-127, cetyl trimethylammonium bromide, and cetyl trimethylammonium chloride [171] could be minimized by replacing the Decanoyl-L-carnitine Protocol template with biodegradable all-natural reagents. Green synthesis can also be useful in minimizing the production of residual waste from utilization of hazardous chemical reagents [6,22]. Green synthesis working with plant extract from green tea, kurkuma, and lantana fir leaves created hematite with rod, hexagonal, cone cube, and flake structures [6,23]. Nevertheless, a high concentration of plant extract was required for rearrangement from the molecules to form uniform structure. The plant extract was unable to direct the formation of pores and prone to reduction bring about deactivation of molecular rearrangement approach. Thus, stabilization of plant extract throughout the synthesis is required either by way of pH variation, temperature, or time regulation, and some reactions expected nitrogen gas to boost the stability. Furthermore, plant extract also formed a residual by-product around the synthesized material that could interfere with all the characterization plus the application [247]. The use of plant extract could be replaced working with extract from animal including gelatin. Gelatin derived from the hydrolysis of animal skin.