Synergistic effect of iron and copper in hydroxyapatite nanorods for Fenton-like oxidation of organic dye

Excellent Photocatalytic Activity of a Novel Hydroxyapatite Based Composite (ZnFe2O4/HAp‐Sn2+) Towards Degradation of Ofloxacin and Norfloxacin Antibiotics

“…The photocatalytic degradation of antibiotics was studied in terms of their kinetics [42] . It follows the first‐order kinetics which can be expressed according to the following equation: $$$\vcenter{\openup.5em\halign{$\displaystyle{#}$\cr {\rm ln}\ ({\rm C}{_{0}}/{\rm C})={\rm kt}\hfill\cr}}$$$ $$$\vcenter{\openup.5em\halign{$\displaystyle{#}$\cr {\rm Also}{\rm \char44 }\ {\rm C}/{\rm C}{_{0}}={\rm e}{^{- {\rm kt}}}\hfill\cr}}$$$ …”

“…The Broad absorption peak in the range 200-300 nm was obtained for ZnFe 2 O 4 /HAp which is due to presence of HAp (charge transfer from O 2À to Ca 2 + ). [42] Furthermore, in ZnFe 2 O 4 /HAp-Sn 2 + , the peak at 200-300 nm becomes more intense. The DRS spectra of as synthesized materials were obtained by transforming their UV-Vis spectra utilizing Kubelka-Munk equation:…”

“…The photocatalytic degradation of antibiotics was studied in terms of their kinetics. [42] It follows the first-order kinetics which can be expressed according to the following equation: ChemistrySelect…”

Enhancement of photocatalytic efficacy by exploiting copper doping in nano-hydroxyapatite for degradation of Congo red dye

“…in a composite or doped form. [12][13][14][15][16][17] Copper is another doping element for the HAp crystal and has recently been used in Fenton-like Cu doped HAp either alone or in combination with other elements, 10,18 in polycaprolactone encapsulated HAp, 19 to enhance biocompatibility, 20 etc.…”

Zn-doped hydroxyapatite@g-C3N4: a novel efficient visible-light-driven photocatalyst for degradation of pharmaceutical pollutants

“…14 As a result, metal-doped hydroxyapatite has received increased attention as a green and stable catalyst in heterogeneous photocatalytic reactions. 15 The crystal lattice structure of HAp enables ionic substitution at several crystallographic locations. Monovalent or divalent cations, such as K + , Mg 2+ , Fe 2+ , Ag + , and Zn 2+ , can replace Ca 2+ locations, whereas di- or tri-valent anions such as carbonate, silicate, or vanadate prefer to replace phosphate moieties.…”