Effect of Ni doping on the properties of Ca(OH)2 nanoparticles and its application in toxic methylene blue dye removal
This work reports the successful synthesis of calcium hydroxide nanoparticles (CHNPs) and doped it with various concentrations (3–12 atom%) of Ni, using a simple co-precipitation method. The CHNPs and nickel-doped calcium hydroxide nanoparticles (Ni-CHNPs) samples were examined for their structural,...
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Elsevier
2025-08-01
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| Series: | Results in Physics |
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| author | Akash Pushpendra Kumar Vipin Kumar Ashok Kumar Sharma Anoop Kumar Mukhopadhyay |
| author_facet | Akash Pushpendra Kumar Vipin Kumar Ashok Kumar Sharma Anoop Kumar Mukhopadhyay |
| author_sort | Akash |
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| description | This work reports the successful synthesis of calcium hydroxide nanoparticles (CHNPs) and doped it with various concentrations (3–12 atom%) of Ni, using a simple co-precipitation method. The CHNPs and nickel-doped calcium hydroxide nanoparticles (Ni-CHNPs) samples were examined for their structural, elemental, functional group, surface morphology, thermal, and optical analysis using various characterization techniques. Structural analysis confirmed that Ni ions were effectively incorporated into the Ca(OH)2 lattice without disrupting its crystalline integrity. The Ni doping in CHNPs is further confirmed by XPS and EDX spectra. The crystallite size and optical band gap of Ni-CHNPs were found to vary with a change in the doping concentration of Ni. Further, the effect of Ni doping was observed in surface morphology and thermogravimetric data. The changes in the properties of Ni-CHNPs with varying concentrations of Ni were discussed in terms of the interaction between Ni and CHNPs. The synthesized material was then used to study the adsorption capacity (qe) and percentage removal (%R) of dyes from wastewater. Furthermore, the effect of temperature on the adsorption characteristics of methylene blue (MB) dye by the Ni-CHNPs is marked by a consistent increase in (%R) and (qe) as the temperature rises from 25 °C to 45 °C. Among these, the sample with 9 at.% Ni showed the highest adsorption efficiency at 45 °C, achieving ∼ 90 % dye removal. The adsorption kinetics of dye were analyzed using several kinetics models, out of which the adsorption of MB was best described by the pseudo-second order (PSO) model. These results provide valuable insights into the properties of Ni-CHNPs and their potential applications in dye removal for further development in environmental remediation technologies. |
| format | Article |
| id | doaj-art-a3c812079faf4bcba22ad1e19925f05a |
| institution | DOAJ |
| issn | 2211-3797 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj-art-a3c812079faf4bcba22ad1e19925f05a2025-08-20T03:23:29ZengElsevierResults in Physics2211-37972025-08-017510835510.1016/j.rinp.2025.108355Effect of Ni doping on the properties of Ca(OH)2 nanoparticles and its application in toxic methylene blue dye removal Akash0Pushpendra Kumar1Vipin Kumar2Ashok Kumar Sharma3Anoop Kumar Mukhopadhyay4Department of Physics, Manipal University Jaipur, Jaipur 303007 Rajasthan, IndiaDepartment of Physics, Manipal University Jaipur, Jaipur 303007 Rajasthan, India; Corresponding authors.Department of Physics, Yeungnam University, Gyeongsan 38541 Gyeongbuk-do, South Korea; Corresponding authors.Department of Mechanical Engineering, Manipal University Jaipur, Jaipur 303007, IndiaDepartment of Physics, Sharda University, Greater Noida 201310 Uttar Pradesh, IndiaThis work reports the successful synthesis of calcium hydroxide nanoparticles (CHNPs) and doped it with various concentrations (3–12 atom%) of Ni, using a simple co-precipitation method. The CHNPs and nickel-doped calcium hydroxide nanoparticles (Ni-CHNPs) samples were examined for their structural, elemental, functional group, surface morphology, thermal, and optical analysis using various characterization techniques. Structural analysis confirmed that Ni ions were effectively incorporated into the Ca(OH)2 lattice without disrupting its crystalline integrity. The Ni doping in CHNPs is further confirmed by XPS and EDX spectra. The crystallite size and optical band gap of Ni-CHNPs were found to vary with a change in the doping concentration of Ni. Further, the effect of Ni doping was observed in surface morphology and thermogravimetric data. The changes in the properties of Ni-CHNPs with varying concentrations of Ni were discussed in terms of the interaction between Ni and CHNPs. The synthesized material was then used to study the adsorption capacity (qe) and percentage removal (%R) of dyes from wastewater. Furthermore, the effect of temperature on the adsorption characteristics of methylene blue (MB) dye by the Ni-CHNPs is marked by a consistent increase in (%R) and (qe) as the temperature rises from 25 °C to 45 °C. Among these, the sample with 9 at.% Ni showed the highest adsorption efficiency at 45 °C, achieving ∼ 90 % dye removal. The adsorption kinetics of dye were analyzed using several kinetics models, out of which the adsorption of MB was best described by the pseudo-second order (PSO) model. These results provide valuable insights into the properties of Ni-CHNPs and their potential applications in dye removal for further development in environmental remediation technologies.http://www.sciencedirect.com/science/article/pii/S2211379725002499Calcium hydroxideBand gap tuningNi-DopingChemical synthesisDye removal |
| spellingShingle | Akash Pushpendra Kumar Vipin Kumar Ashok Kumar Sharma Anoop Kumar Mukhopadhyay Effect of Ni doping on the properties of Ca(OH)2 nanoparticles and its application in toxic methylene blue dye removal Results in Physics Calcium hydroxide Band gap tuning Ni-Doping Chemical synthesis Dye removal |
| title | Effect of Ni doping on the properties of Ca(OH)2 nanoparticles and its application in toxic methylene blue dye removal |
| title_full | Effect of Ni doping on the properties of Ca(OH)2 nanoparticles and its application in toxic methylene blue dye removal |
| title_fullStr | Effect of Ni doping on the properties of Ca(OH)2 nanoparticles and its application in toxic methylene blue dye removal |
| title_full_unstemmed | Effect of Ni doping on the properties of Ca(OH)2 nanoparticles and its application in toxic methylene blue dye removal |
| title_short | Effect of Ni doping on the properties of Ca(OH)2 nanoparticles and its application in toxic methylene blue dye removal |
| title_sort | effect of ni doping on the properties of ca oh 2 nanoparticles and its application in toxic methylene blue dye removal |
| topic | Calcium hydroxide Band gap tuning Ni-Doping Chemical synthesis Dye removal |
| url | http://www.sciencedirect.com/science/article/pii/S2211379725002499 |
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