1
|
Rajkumar G, Sundar R. Sonochemical-assisted eco-friendly synthesis of silver nanoparticles (AgNPs) using avocado seed extract: Naked-eye selective colorimetric recognition of Hg2+ ions in aqueous medium. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
2
|
Milon, Hossain MK, Roy D, Ahmed F. Boron nanocluster as a heavy metal adsorbent in aqueous environment: A DFT Study. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130302] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
3
|
Vashisht D, Sangar S, Kaur M, Sharma E, Vashisht A, Ibhadon AO, Sharma S, Mehta SK, Singh K. Biosynthesis of silver nanospheres, kinetic profiling and their application in the optical sensing of mercury and chlorite ions in aqueous solutions. ENVIRONMENTAL RESEARCH 2021; 197:111142. [PMID: 33865822 DOI: 10.1016/j.envres.2021.111142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 03/26/2021] [Accepted: 04/04/2021] [Indexed: 06/12/2023]
Abstract
Pollution of water linked to microbial decontamination and extensive use of sodium chlorite (NaClO2) as a disinfectant, especially in the face of the current COVID-19 situation, is a serious water pollution issue that needs to be addressed. In this context, an environmentally friendly and cost-effective method has been developed for the biomimetic synthesis of Ag nanospheres (Ag NSs) using aqueous extract of Piper nigrum for the detection of chlorite (ClO2-) and mercury (Hg2+) ions. The strong antioxidant properties of the biomolecules present in the Piper nigrum extract reduce silver ions (Ag+) to Ag0. After optimization of the formulation parameters, it was observed that 1 mL of piper nigrum extract was sufficient to reduce and stabilize 100 mL of 1.5 mM of Ag+ in 2.5 h at 30 °C. X-ray diffraction (XRD) pattern of Ag NSs revealed their crystalline nature and the characteristic Bragg's diffraction peaks confirmed their face cubic crystal (FCC) lattice. The characteristic reddish-brown color and absorption surface plasmon resonance (SPR) band at 435 nm confirmed the successful fabrication of Ag NSs. Kinetic analysis revealed a three-phase growth pattern involving nucleation, growth and stabilization. Transmission electron microscopy (TEM) and High-resolution transmission electron microscopy (HRTEM) micrograms, showed spherical NSs with narrow polydispersity with particle size ranging from 10 to 30 nm. The synthesized NSs were exposed to various metal ions and anions. The absorption intensity of Ag NSs quenched in the presence of mercury ions (Hg2+) among the cations and Chlorite ions (ClO2-) among the anions. The limit of detection (LOD) of 7.47 μM and 1.11 μM was evaluated from the calibration curve for Hg2+ and ClO2-, respectively. Based on these promising results, it is suggested that the method reported is a low-cost and one step biogenic protocol for the synthesis of Ag NSs and their employment for the detection of Hg2+ and ClO2-ions.
Collapse
Affiliation(s)
- Devika Vashisht
- Department of Chemistry and Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, 160014, India; Department of Chemical Engineering, Faculty of Science and Engineering, University of Hull, Cottingham Road, Hull, HU6 7RX, United Kingdom
| | - Sugandha Sangar
- Department of Chemistry, School of Basic and Applied Sciences, Maharaja Agrasen University, Baddi, 174103, India
| | - Manpreet Kaur
- Department of Chemistry and Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, 160014, India
| | - Ekta Sharma
- Department of Chemistry, School of Basic and Applied Sciences, Maharaja Agrasen University, Baddi, 174103, India
| | - Aseem Vashisht
- Department of Physics, Panjab University, Chandigarh, 160014, India
| | - A O Ibhadon
- Department of Chemical Engineering, Faculty of Science and Engineering, University of Hull, Cottingham Road, Hull, HU6 7RX, United Kingdom
| | - Shweta Sharma
- Institute of Forensic Science and Criminology, Panjab University, Chandigarh, 160014, India
| | - S K Mehta
- Department of Chemistry and Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, 160014, India
| | - Kulvinder Singh
- Department of Chemistry, School of Basic and Applied Sciences, Maharaja Agrasen University, Baddi, 174103, India.
| |
Collapse
|
4
|
Xu L, Liu Y, Wang J, Tang Y, Zhang Z. Selective adsorption of Pb 2+ and Cu 2+ on amino-modified attapulgite: Kinetic, thermal dynamic and DFT studies. JOURNAL OF HAZARDOUS MATERIALS 2021; 404:124140. [PMID: 33070005 DOI: 10.1016/j.jhazmat.2020.124140] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 09/11/2020] [Accepted: 09/27/2020] [Indexed: 06/11/2023]
Abstract
Amino-modified attapulgite (M-ATP) was prepared to remove Pb2+ and Cu2+ from the aqueous solution. Fourier transform infrared spectroscopy (FT-IR) spectrums and X-ray powder diffraction (XRD) patterns revealed that a new Si-O-Si bond formed after modification. The result indicates that the graft reaction of ATP occurred at Si-O (2 0 0) tetrahedron crystal face. No matter whether in a single or binary heavy metal ion system, the adsorption experiments displayed that the equilibrium adsorption capacity of M-ATP towards Pb2+ was much higher than Cu2+, which indicated M-ATP more readily adsorbs the Pb2+. The selective adsorption mechanism of Pb2+ and Cu2+ on modified attapulgite was studied by density functional theory (DFT). The Eads of Pb (- 2.01 eV) adsorbed on M-ATP is lower than Cu (- 1.79 eV) through the DFT calculation of adsorption energy (Eads), which indicate that the Pb2+ adsorbed on M-ATP is more stable than Cu2+. Both adsorption experiments and theoretical calculations revealed that due to the stability of Pb2+ adsorption on M-ATP, Pb2+ is more readily adsorbed by M-ATP, and it is difficult for Cu2+ to exchange Pb2+ from M-ATP.
Collapse
Affiliation(s)
- Lei Xu
- Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Yani Liu
- Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China; College of Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Jingang Wang
- Computational Center for Property and Modification on Nanomaterials, College of Sciences, Liaoning University of Petroleum and Chemical Technology, Fushun 113001, China
| | - Ying Tang
- Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Zhe Zhang
- Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
| |
Collapse
|
5
|
Ractopamine as a novel reagent for the fabrication of gold nanoparticles: Colorimetric sensing of cysteine and Hg2+ ion with different spectral characteristics. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105212] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
6
|
Understanding the formation of nanorods on hematite (α-Fe2O3) in the presence of surfactants: A molecular dynamics simulation study. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
7
|
Chandra A, Bhattarai A, Yadav AK, Adhikari J, Singh M, Giri B. Green Synthesis of Silver Nanoparticles Using Tea Leaves from Three Different Elevations. ChemistrySelect 2020. [DOI: 10.1002/slct.201904826] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Abhishek Chandra
- School of Chemical SciencesCentral University of Gujarat, Gandhinagar India
| | - Ajaya Bhattarai
- Department of Chemistry, M.M.A.M.C.Tribhuvan University, Biratnagar Nepal
| | - Ashok K. Yadav
- Department of Chemistry, M.M.A.M.C.Tribhuvan University, Biratnagar Nepal
| | - Janak Adhikari
- Department of Chemistry, M.M.A.M.C.Tribhuvan University, Biratnagar Nepal
| | - Man Singh
- School of Chemical SciencesCentral University of Gujarat, Gandhinagar India
| | - Basant Giri
- Center for Analytical SciencesKathmandu Institute of Applied Sciences Kathmandu PO Box 23002 Nepal
| |
Collapse
|
8
|
The mechanism of tuning the morphology of bio-conjugated ZnO nanoparticles with citrate coated gold nanoparticles for degradation of EBT: DFT and experimental study. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111706] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|