Removal of carcinogenic hexavalent chromium from aqueous solutions using newly synthesized and characterized polypyrrole–titanium(IV)phosphate nanocomposite

Enhanced removal of hexavalent chromium from aqueous media using a highly stable and magnetically separable rosin-biochar-coated TiO2@C nanocomposite

“…Subsequently, ferric chloride solution was slowly spread into the above suspension and stirred for 1 hour. Then, the spongy emulsion was obtained by evaporating the solvent through heating at 70 C. 11,34 Finally, the spongy emulsion was pyrolyzed in a tube furnace (BTF-1200C, Anhui BEQ equipment, technology Co., Ltd, China) at 800 C for 15 min (heating rate of 10 C min À1 ) in the presence of argon gas (100 mL min À1 ). Aer pyrolysis, a blackish powdered sample (RBC-TiO 2 @C nanocomposite) was obtained.…”

“…12,13 Cr(VI) ions are relatively more toxic and carcinogenic than Cr(III) ions due to their higher solubility and mobility in the environment. 11,13,14 Thus, the presence of these ions can be detrimental to ecosystems as well as humans. Hence, there is a need to remove Cr(VI) from wastewater using a sustainable approach.…”

“…Titanium (Ti) materials are porous and amphoteric, due to which they have become very attractive for the adsorption of metal ions [i.e., Cr(VI)] from water. 11,42 Additionally, TiO 2 can be used in nanocomposite coatings for efficient fabrication of materials, oil/water separation, fabrication of solar cells and other applications. 41,43,44 Furthermore, rosin has become popular due to its unique molecular structure and its efficiency in removing contaminants.…”

Enzyme immobilization and molecular modeling studies on an organic–inorganic polypyrrole–titanium(iv)phosphate nanocomposite

“…[1][2][3][4][5][6][7][8][9] Amongst these polymers, polypyrrole (PPy) has been widely utilized for enzyme immobilization due to high electrical conductivity, biocompatibility and facile synthesis at low cost in comparison to other polymers. [1][2][3][4][5][6][7][8][9] Amongst these polymers, polypyrrole (PPy) has been widely utilized for enzyme immobilization due to high electrical conductivity, biocompatibility and facile synthesis at low cost in comparison to other polymers.…”

Facile synthesis, characterization and optical studies on electrically conductive polypyrrole coated titanium dioxide nanocomposite photo-catalyst for water purification

“…Nonetheless, its wide band gap of 3.2 eV is an obstacle to harvesting visible radiation, which constitutes roughly 42% portion of the solar spectrum [5]. Various novel strategies have been used to enhance the visible-light-responsiveness of TiO2 by loading or doping it with noble metals, by the formation of composites with different metal oxide photo-catalysts and with conducting polymers [6]. Conducting polymers have garnered widespread attention lately owing to their indispensable applications in the field of photo-catalysis due to their high electrical conductivity, chemical and environmental stability, simple synthesis method and improved visible light retention capacity [7].…”