1
|
Sadia M, Khan J, Khan R, Shah SWA, Zada A, Zahoor M, Ullah R, Ali EA. Synthesis and Computational Study of an Optical Fluorescent Sensor for Selective Detection of Ni 2+ Ions. ACS Omega 2023; 8:27500-27509. [PMID: 37546637 PMCID: PMC10399192 DOI: 10.1021/acsomega.3c03131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 07/07/2023] [Indexed: 08/08/2023]
Abstract
The presence of an abnormal amount of Ni2+ in the human body causes various health issues. Therefore, this work aimed to synthesize the curcumin-based fluorescence-on sensor P [2,6-bis((E)-4-chlorobenzylidene)-cyclohexan-1-one] that was capable of selectively responding to Ni2+ ions in aqueous solution. The structure of P was confirmed by 1H NMR and Fourier transform infrared (FTIR) spectroscopy. The Ni2+ ion sensing was based on the fluorescence enhancement of the fluorophore (P) in neutral aqueous medium. The response of the P-based sensor was highly selective toward Ni2+ ions, whereas the possible interferences from other metal cations were negligible. P had a fast response; it was selective and had a sensitive detection limit (LOD = 2 × 10-10 M) toward Ni2+ ions in neutral medium with a high association constant (K) value of 3.6 × 105 M-2 for the complex formation between the P and Ni2+ ions. Job's plot and DFT calculations proved that the binding stoichiometry of P for Ni2+ was 2:1. P was recovered using EDTA as a chelating agent after being employed as a fluorescent sensor. These characteristics ensured the potential use of P as a new class of chemosensor for environmental applications.
Collapse
Affiliation(s)
- Maria Sadia
- Department
of Chemistry, University of Malakand, Chakdara 18800, Lower Dir, Khyber Pakhtunkhwa, Pakistan
| | - Jehangir Khan
- Department
of Chemistry, University of Malakand, Chakdara 18800, Lower Dir, Khyber Pakhtunkhwa, Pakistan
| | - Rizwan Khan
- Department
of Electrical Engineering, Kwangwoon University, Seoul 54047, South Korea
| | - Syed Wadood Ali Shah
- Department
of Pharmacy, University of Malakand, Chakdara 18800, Lower Dir, Khyber Pakhtunkhwa, Pakistan
| | - Adil Zada
- Department
of Chemistry, University of Malakand, Chakdara 18800, Lower Dir, Khyber Pakhtunkhwa, Pakistan
| | - Muhammad Zahoor
- Department
of Biochemistry, University of Malakand, Chakdara 18800, Lower Dir, Khyber Pakhtunkhwa, Pakistan
| | - Riaz Ullah
- Department
of Pharmacognosy, College of Pharmacy, King
Saud University, Riyadh 11451, Saudi Arabia
| | - Essam A. Ali
- Department
of Pharmaceutical Chemistry, College of
Pharmacy King Saud University, Riyadh 11451, Saudi Arabia
| |
Collapse
|
2
|
Khan J, Sadia M, Wadood Ali Shah S, Zahoor M, Alsharif KF, Al-Joufi FA. Development of [(2E,6E)-2,6-bis(4-(dimethylamino)benzylidene)cyclohexanone] as fluorescence-on probe for Hg2+ ion detection: Computational aided experimental studies. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.103710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
|
3
|
Melhi S, Ullah Jan S, Khan AA, Badshah K, Ullah S, Bostan B, Selamoglu Z. Remediation of Cd (II) Ion from an Aqueous Solution by a Starch-Based Activated Carbon: Experimental and Density Functional Theory (DFT) Approach. Crystals 2022; 12:189. [DOI: 10.3390/cryst12020189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Heavy metal ion pollution is a serious threat for aquatic and terrestrial living beings. Adsorption is a facile process to encounter heavy metal pollution. Various types of adsorbents have been developed and used for environmental remediation. Activated carbon is one of the cheapest adsorbents derived from various biomass. In this work, the adsorption of cadmium ions (Cd (II)) with starch-based activated carbon (AC) having a specific surface area of 1600 m2g−1 was investigated in a series of batch laboratory studies. The effective operating parameters, such as initial pH (pH0), initial concentration of metal ions, contact time, and temperature on the adsorption, were investigated. Validation of the kinetic study shows that the adsorption process is better predicted by the pseudo-second-order model. The extended Freundlich and Langmuir isotherms were applied to the study. The results show that the metal ion adsorption capacities of activated carbon increased with increasing pH, and it was found that maximum adsorption (284 mg g−1) of Cd (II) was achieved at pH solution of 5.5–6. The thermodynamic parameters, such as ∆G, ∆H, and ∆S, were found to be −17.42 kJ mol−1, 8.49 kJ mol−1, and 58.66 J mol−1 K−1, respectively, revealing that the adsorption mechanism is endothermic, spontaneous, and feasible. Furthermore, the density functional theory simulations demonstrated that the activated carbon strongly interacted with toxicity and mobility, so it is very urgent to remove this species from industrial wastewater before it is discharged into the environment. The adsorption energy calculated for all interactive sites was negative (−43.41 kJ mol−1 to −967.74 kJ mol−1), showing effective interaction between the adsorbate and adsorbent. The PDOS clearly shows that there is a stronger overlapping at the Femi level between the d orbital of the Cd ion and the p orbital of the O atom, showing a strong interaction and confirming the chemical bond formation between the Cd (II) ion and O atom.
Collapse
|
4
|
Jan SU, Ahmad A, Khan AA, Melhi S, Ahmad I, Sun G, Chen CM, Ahmad R. Removal of azo dye from aqueous solution by a low-cost activated carbon prepared from coal: adsorption kinetics, isotherms study, and DFT simulation. Environ Sci Pollut Res Int 2021; 28:10234-10247. [PMID: 33170468 DOI: 10.1007/s11356-020-11344-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Accepted: 10/20/2020] [Indexed: 06/11/2023]
Abstract
The high-risk organic pollutants produced by industries are of growing concern. The highly porous coal-based activated carbon (AC) having a specific surface area of 3452.8 m2/g is used for the adsorption of azo dye from synthetic solution. The sorbent is characterized through BET, SEM, TEM, XRD, FT-IR, TGA, and zeta potential. The sorbent exhibits - 18.7 mV surface charge, which is high enough for making suspension. The maximum dye uptake of 333 mg/g is observed in sorbent under acidic medium. The thermodynamics parameters like ∆G, ∆H, and ΔS were found to be - 12.40 kJ mol-1, 39.66 kJ mol-1, and 174.55 J mol-1 K-1 at 293 K, respectively, revealing that the adsorption mechanism is spontaneous, endothermic, and feasible. The experimental data follows the Langmuir and D-R models. The adsorption follows pseudo 2nd-order kinetics. DFT investigation shows that the dye sorption onto AC in configuration No. 4 (CFG-4) is more effective, as this configuration has high ∆H (enthalpy change) and adsorption energy (Eads). This is confirmed by Mullikan atomic charge transfer phenomenon.
Collapse
Affiliation(s)
- Saeed Ullah Jan
- Department of Chemistry, University of Malakand, Chakdara, Dir(L), 18800, Pakistan
| | - Aziz Ahmad
- CAS Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, Shanxi Province, People's Republic of China
| | - Adnan Ali Khan
- Department of Chemistry, University of Malakand, Chakdara, Dir(L), 18800, Pakistan
- Centre for Computational Materials Science, University of Malakand, Chakdara, Dir(L), 18800, Pakistan
| | - Saad Melhi
- Department of Chemistry, College of Science, University of Bisha, Bisha, 61922, Saudi Arabia
| | - Iftikhar Ahmad
- Centre for Computational Materials Science, University of Malakand, Chakdara, Dir(L), 18800, Pakistan
- Department of Physics, Gomal University, Dera Ismail Khan, Pakistan
| | - Guohua Sun
- CAS Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, Shanxi Province, People's Republic of China.
| | - Cheng-Meng Chen
- CAS Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, Shanxi Province, People's Republic of China.
| | - Rashid Ahmad
- Department of Chemistry, University of Malakand, Chakdara, Dir(L), 18800, Pakistan.
- Centre for Computational Materials Science, University of Malakand, Chakdara, Dir(L), 18800, Pakistan.
| |
Collapse
|