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Athab ZH, Halbus AF, Mohammed SB, Atiyah AJ, Ismael HI, Saddam NS, Baqir SJ, Alesary HF, Algburi S, Al-Ansari N. Comparison activity of pure and chromium-doped nickel oxide nanoparticles for the selective removal of dyes from water. Sci Rep 2024; 14:4032. [PMID: 38369532 PMCID: PMC10874945 DOI: 10.1038/s41598-024-53490-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 02/01/2024] [Indexed: 02/20/2024] Open
Abstract
The current study involves a synthesis of a composite of nickel oxide nanoparticles (NiONPs) with a chromium dopant to yield (Cr/NiONPs). Synthesis of nickel oxide was performed by the co-precipitation method. The synthesis of the composite was conducted by the impregnation method. FTIR, EDX, SEM, and XRD were used to characterize the synthesized materials. The synthesised materials' point zero charges (PZC) were performed using the potentiometric titration method. The obtained results show that the PZC for neat nickel oxide was around 5, and it was around 8 for Cr/NiONPs. The adsorption action of the prepared materials was examined by applying them to remove Reactive Red 2 (RR2) and Crystal Violate (CV) dyes from solutions. The outcomes demonstrated that Cr/NiONPs were stronger in the removal of dyes than NiONPs. Cr/NiONPs achieved 99.9% removal of dyes after 1 h. Adsorption isotherms involving Freundlich and Langmuir adsorption isotherms were also conducted, and the outcomes indicated that the most accurate representation of the adsorption data was offered by Langmuir adsorption isotherms. Additionally, it was discovered that the adsorption characteristics of the NiONPs and Cr/NiONPs correspond well with the pseudo-second-order kinetic model. Each of the NiONPs and Cr/NiONPs was reused five times, and the results display that the effectiveness of the removal of RR2 dye slightly declined with the increase in reuse cycles; it lost only 5% of its original efficiency after the 5 cycles. Generally, Cr/NiONPs showed better reusability than NiONPs under the same conditions.
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Affiliation(s)
- Zahraa H Athab
- Environmental Research and Studies Center, University of Babylon, Hilla, Iraq
| | - Ahmed F Halbus
- Department of Chemistry, College of Science, University of Babylon, Hilla, Iraq.
| | | | - Abbas J Atiyah
- Department of Chemistry, College of Science, University of Babylon, Hilla, Iraq
| | | | | | - Sadiq J Baqir
- Almustaqbal University College, Babylon, Hilla, Iraq
| | - Hasan F Alesary
- Department of Chemistry, College of Science, University of Kerbala, Karbala, Iraq
| | - Sameer Algburi
- College of Engineering Techniques, Al-Kitab University, Kirkuk, 36015, Iraq
| | - Nadhir Al-Ansari
- Department of Civil, Environmental and Natural Resources Engineering, Lulea University of Technology, Luleå, Sweden.
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Sarvalkar P, Vadanagekar AS, Karvekar OS, Kumbhar PD, Terdale SS, Thounaojam AS, Kolekar SS, Vhatkar RS, Patil PS, Sharma KKK. Thermodynamics of Azo Dye Adsorption on a Newly Synthesized Titania-Doped Silica Aerogel by Cogelation: A Comparative Investigation with Silica Aerogels and Activated Charcoal. ACS OMEGA 2023; 8:13285-13299. [PMID: 37065033 PMCID: PMC10099422 DOI: 10.1021/acsomega.3c00552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 03/17/2023] [Indexed: 06/19/2023]
Abstract
The adsorption isotherms of azo dyes on a newly synthesized titania-doped silica (TdS) aerogel compared to silica aerogels and activated charcoal (AC) are systematically investigated. Monolithic TdS aerogels were synthesized by the cogelation process followed by supercritical drying of tetraethyl orthosilicate (TEOS) as a gel precursor and titanium(IV) isopropoxide (TTIP) as a metal complex precursor for co-polymerization in ethanol solvent. An acid-base catalyst was used for the hydrolysis and condensation of TEOS and TTIP. The effect of Ti4+ doping in a silica aerogel on the mesoporous structure and the adsorption capacity of methylene blue (MB) and crystal violet (CV) dyes were evaluated from the UV-vis absorption spectra. In order to compare the adsorption isotherms, the surface areas of silica and TdS aerogels were first normalized with respect to AC, as adsorption is a surface phenomenon. The azo dye equilibrium adsorption data were analyzed using different isotherm equations and found to follow the Langmuir adsorption isotherm. The maximum monolayer adsorption capacities for the adsorbent TdS aerogel normalized with the AC of the Langmuir isotherm are 131.58 and 159.89 mg/g for MB and CV dyes, respectively. From the Langmuir curve fitting, the Q max value of the TdS aerogel was found to increase by 1.22-fold compared to AC, while it increased 1.25-1.53-fold compared to the silica aerogel. After four cycles, regeneration efficiency values for MB and CV dyes are about 84 and 80%, respectively. The study demonstrates the excellent potential and recovery rate of silica and TdS aerogel adsorbents in removing dyes from wastewater. The pore volume and average pore size of the new aerogel, TdS, were found to be lower than those of the silica aerogel. Thus, a new TdS aerogel with a high capacity of adsorption of azo dyes is successfully achieved.
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Affiliation(s)
- Prashant
D. Sarvalkar
- School
of Nanoscience and Biotechnology, Shivaji
University, Kolhapur 416004, Maharashtra, India
| | - Apurva S. Vadanagekar
- School
of Nanoscience and Biotechnology, Shivaji
University, Kolhapur 416004, Maharashtra, India
| | - Omkar S. Karvekar
- School
of Nanoscience and Biotechnology, Shivaji
University, Kolhapur 416004, Maharashtra, India
| | - Pramod D. Kumbhar
- Department
of Chemistry, Shivaji University, Kolhapur 416004, Maharashtra, India
- Department
of Chemistry, Sadguru Gadge Maharaj College, Karad 415124, Maharashtra, India
| | - Santosh S. Terdale
- Department
of Chemistry, Savitribai Phule Pune University, Pune 411007, Maharashtra, India
| | - Avinash Singh Thounaojam
- Department
of Chemistry, AKI’s Poona College
of Arts, Science & Commerce, Pune 411001, Maharashtra, India
| | - Sanjay S. Kolekar
- Department
of Chemistry, Shivaji University, Kolhapur 416004, Maharashtra, India
| | - Rajiv S. Vhatkar
- Department
of Physics, Shivaji University, Kolhapur 416004, Maharashtra, India
| | - Pramod S. Patil
- School
of Nanoscience and Biotechnology, Shivaji
University, Kolhapur 416004, Maharashtra, India
- Department
of Physics, Shivaji University, Kolhapur 416004, Maharashtra, India
| | - Kiran Kumar K. Sharma
- School
of Nanoscience and Biotechnology, Shivaji
University, Kolhapur 416004, Maharashtra, India
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Equilibrium, kinetic, and thermodynamic studies of the adsorption of anionic and cationic dyes from aqueous solution using agricultural waste biochar. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2022. [DOI: 10.1007/s13738-022-02721-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Enhancing sorption capacity of methylene blue dye using solid waste of lemongrass biosorbent by modification method. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/10/2022] Open
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