RETRACTED: Synthesis of strontium (Sr) doped hydroxyapatite (HAp) nanorods for enhanced adsorption of Cr (VI) ions from wastewater
| Autor: | Xia Jiang, Sun Yan, Weidong Li, Zhang Yun, Yuting Zhou, Haixiang Cheng, Huayun Yang, Yong Cao, Qi Liu |
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| Rok vydání: | 2021 |
| Předmět: |
Langmuir
Materials science chemistry.chemical_element 02 engineering and technology 01 natural sciences Metal symbols.namesake Adsorption 0103 physical sciences Monolayer Materials Chemistry 010302 applied physics Strontium Process Chemistry and Technology Doping Langmuir adsorption model 021001 nanoscience & nanotechnology Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry visual_art Ceramics and Composites visual_art.visual_art_medium symbols Nanorod 0210 nano-technology Nuclear chemistry |
| Zdroj: | Ceramics International. 47:16730-16736 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2021.02.243 |
| Popis: | The development of high-efficiency adsorbents for heavy metal ion removal from wastewater is highly desirable and challenging due to their synthesis complexity and low adsorption capacities. Herein, we reported the synthesis of strontium (Sr) doped hydroxyapatite (HAp) for the increased Cr (VI) adsorption. The effects of pH, temperature, and time on adsorption performances were studied. As a result, the Sr-HAp nanorods can achieve a Cr (VI) adsorption capacity of 443 mg/g, which is significantly higher than that of HAp nanorods (318 mg/g). To better understand the adsorption mechanism, the Langmuir isotherm model was established. The modeling results indicated that Langmuir monolayer chemical adsorption contributed to the efficient Cr (VI) ion removal for Sr-HAp nanorods adsorbents. The surface area and surface functional groups (O–H) contributed to the different Cr (VI) adsorption capacities between HAp and Sr-HAp. |
| Databáze: | OpenAIRE |
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