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Iqbal Z, Tanweer MS, Alam M. Reduced Graphene Oxide-Modified Spinel Cobalt Ferrite Nanocomposite: Synthesis, Characterization, and Its Superior Adsorption Performance for Dyes and Heavy Metals. ACS OMEGA 2023; 8:6376-6390. [PMID: 36844590 PMCID: PMC9948210 DOI: 10.1021/acsomega.2c06636] [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: 10/14/2022] [Accepted: 02/03/2023] [Indexed: 06/18/2023]
Abstract
This work is dedicated to the synthesis, characterization, and adsorption performance of reduced graphene oxide-modified spinel cobalt ferrite nanoparticles. The as-synthesized reduced graphene oxide cobalt ferrite (RGCF) nanocomposite has been characterized using FTIR spectroscopy, FESEM coupled with EDXS, XRD, HRTEM, zeta potential, and vibrating sample magnetometer (VSM) measurements. FESEM proves the particle size in the range of 10 nm. FESEM, EDX, TEM, FTIR, and XPS analyses provide the proof of successful incorporation of rGO sheets with cobalt ferrite nanoparticles. The crystallinity and spinel phase of cobalt ferrite nanoparticles have been shown by XRD results. The saturation magnetization (M s) was measured as 23.62 emu/g, proving the superparamagnetic behavior of RGCF. The adsorption abilities of the synthesized nanocomposite have been tested using cationic crystal violet (CV) and brilliant green (BG) and anionic methyl orange (MO) and Congo red (CR) dyes. The adsorption trend for MO, CR, BG, and As(V) follows RGCF > rGO > CF at neutral pH. Adsorption studies have been accomplished by optimizing parameters like pH (2-8), adsorbent dose (1-3 mg/25 mL), initial concentration (10-200 mg/L), and contact time at constant room temperature (RT). To further investigate the sorption behavior, isotherm, kinetics, and thermodynamic studies have been conducted. Langmuir isotherm and pseudo-second-order kinetic models suited better for the adsorption of dyes and heavy metals. The maximum adsorption capacities (q m) obtained have been found as 1666.7, 1000, 416.6, and 222.2 mg/g for MO, CR, BG, and As, respectively, with operational parameters such as T = 298.15 K; RGCF dose: 1 mg for MO and 1.5 mg each for CR, BG, and As. Thus, the RGCF nanocomposite was found to be an excellent adsorbent for the removal of dyes and heavy metals.
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Afzal A, Rafique MS, Iqbal SS, Rafique M. Deportment of cobalt bismuth nanoferrites in Kevlar‐supported c
ellulose acetate
membranes for heavy metal‐salts rejection profile. J Appl Polym Sci 2022. [DOI: 10.1002/app.52962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Amina Afzal
- Physics Department University of Engineering and Technology (UET) Lahore Pakistan
| | | | - Sadia Sagar Iqbal
- Department of Physics The University of Lahore (UOL) Lahore Pakistan
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Cheng Z, Yang J, Li L, Chen Y, Wang X. Flocculation inspired combination of layered double hydroxides and fulvic acid to form a novel composite adsorbent for the simultaneous adsorption of anionic dye and heavy metals. J Colloid Interface Sci 2022; 618:386-398. [DOI: 10.1016/j.jcis.2022.03.097] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 03/17/2022] [Accepted: 03/21/2022] [Indexed: 01/03/2023]
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Joshy D, Chakko S, Ismail YA, Periyat P. Surface basicity mediated rapid and selective adsorptive removal of Congo red over nanocrystalline mesoporous CeO 2. NANOSCALE ADVANCES 2021; 3:6704-6718. [PMID: 36132658 PMCID: PMC9419567 DOI: 10.1039/d1na00412c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 09/18/2021] [Indexed: 06/16/2023]
Abstract
Herein we first report surface basicity mediated rapid and selective adsorptive removal of organic pollutants over nanocrystalline mesoporous CeO2. The role of surface features in controlling the selectivity and efficiency of adsorption is well known. Nevertheless, the possibility of tuning the adsorption capacity and selectivity of adsorbents through their surface characteristics remains less explored. In this work, the surface basicity of mesoporous CeO2 nanoparticles was improved by Er3+ doping under two different reaction conditions: via sol-gel and sol-hydrothermal methods. The nature and amount of surface basic sites were determined with the help of CO2 temperature programmed desorption (TPD). The adsorption capacity and selectivity of four different CeO2 samples were investigated using Congo red, methyl orange, and methylene blue as the model pollutants. From the adsorption studies, Er3+ doped CeO2 synthesized by the sol-gel method, having the highest amount of surface basic sites, proved to be the most efficient and highly selective adsorbent among the four developed variants of CeO2 towards Congo red. According to the proposed mechanism, surface basicity can be employed as a controlling parameter capable of tuning the adsorption capacity as well as the selectivity of CeO2 towards organic pollutants.
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Affiliation(s)
- Deepak Joshy
- Department of Chemistry, University of Calicut Kerala India 673635
| | - Seena Chakko
- Department of Chemistry, University of Calicut Kerala India 673635
| | - Yahya A Ismail
- Department of Chemistry, University of Calicut Kerala India 673635
| | - Pradeepan Periyat
- Department of Chemistry, University of Calicut Kerala India 673635
- Department of Environmental Studies, Kannur University Kerala India
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Solis KLB, Kwon YH, Kim MH, An HR, Jeon C, Hong Y. Metal organic framework UiO-66 and activated carbon composite sorbent for the concurrent adsorption of cationic and anionic metals. CHEMOSPHERE 2020; 238:124656. [PMID: 31472345 DOI: 10.1016/j.chemosphere.2019.124656] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 08/21/2019] [Accepted: 08/23/2019] [Indexed: 06/10/2023]
Abstract
A composite sorbent for the simultaneous removal of both Hg2+ and SeO32- from aqueous media was produced from the solvothermal synthesis of a zirconium metal organic framework, UiO-66, in the presence of activated carbon. The composite sorbent has a large surface area of 1051 m2 g-1 with crystalized porous structures and has strong thermal stability up to 600 °C. The contaminant uptake of the sorbent follows a Langmuir adsorption isotherm with maximum sorption capacity of 205 mg g-1 and 168 mg g-1 for Hg2+ and SeO32-, respectively. Scanning electron microscopy-energy dispersive spectroscopy results show that the Se regions overlap exclusively with Zr-rich regions suggesting that SeO32- adsorption depends entirely on the exposed UiO-66 surface. In addition, X-ray photoelectron spectroscopy spectra of Se 3d and Hg 4f showed the association of SeO32- and Hg2+ on the UiO-66 and carbon surfaces, respectively. The sorbent could facilitate the development of a single process for the simultaneous removal of cationic Hg and anionic Se as well as other similar ionic metals with opposite charges from aqueous media.
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Affiliation(s)
- Kurt Louis B Solis
- Department of Environmental Engineering, Korea University, Sejong City, 30019, Republic of Korea
| | - Young-Hwan Kwon
- Department of Chemical Engineering, Daegu University, Geongsan-si, 38453, Republic of Korea
| | - Moon-Hyeon Kim
- Department of Environmental Engineering, Daegu University, Geongsan-si, 38453, Republic of Korea
| | - Ha-Rim An
- Advanced Nano-Surface Group, Korea Basic Science Institute, Daejeon City, 34133, Republic of Korea
| | - Cheolho Jeon
- Advanced Nano-Surface Group, Korea Basic Science Institute, Daejeon City, 34133, Republic of Korea
| | - Yongseok Hong
- Department of Environmental Engineering, Korea University, Sejong City, 30019, Republic of Korea.
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Wang R, Yu J, Hao Q. Activated carbon/Mn0.6Zn0.4Fe2O4 composites: Facile synthesis, magnetic performance and their potential application for the removal of methylene blue from water. Chem Eng Res Des 2018. [DOI: 10.1016/j.cherd.2018.01.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Pei C, Han G, Zhao Y, Zhao H, Liu B, Cheng L, Yang H, Liu S. Superior adsorption performance for triphenylmethane dyes on 3D architectures assembled by ZnO nanosheets as thin as ∼1.5nm. JOURNAL OF HAZARDOUS MATERIALS 2016; 318:732-741. [PMID: 27493012 DOI: 10.1016/j.jhazmat.2016.07.066] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Revised: 07/15/2016] [Accepted: 07/27/2016] [Indexed: 06/06/2023]
Abstract
The 3-dimensional hierarchical ZnO flower-like architectures have been synthesized in a Zn(Ac)2·2H2O-Na2SeO3-KBH4-pyridine solvothermal system at 100°C for 24h. The flower-like architecture is assembled from ZnO nanosheets with a thickness of ∼1.5nm, and the flower-like architecture specific surface area is 132m(2)/g. When the ZnO flower-like architecture is used as the adsorbent for acid fuschin (AF), malachite green (MG), basic fuchsin (BF), congo red (CR) and acid red (AR) in water, the adsorption capacities for AF, MG, BF, CR and AR are 7154.9, 2587.0, 1377.9, 85.0 and 38.0mg/g, respectively. Evidently, the as-obtained ZnO flower-like architectures show excellent adsorption performances for triphenylmethane dyes, and the adsorption capacity of 7154.9mg/g for AF is the highest of all adsorbents for dyes. The adsorption mechanism can be attributed to the electrostatic attraction and the formation of ion-association complex between triphenylmethane dyes and ZnO hierarchical flower-like architectures.
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Affiliation(s)
- Cuijin Pei
- Shaanxi Engineering Laboratory for Advanced Energy Technology and Key Laboratory of Macromolecular Science of Shaanxi Province, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, China
| | - Guoping Han
- Shaanxi Engineering Laboratory for Advanced Energy Technology and Key Laboratory of Macromolecular Science of Shaanxi Province, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, China
| | - Yan Zhao
- National Coal Inspection Centre, Shaanxi Institute of Energy Quality Supervision and Inspection, Xi'an, Shaanxi 710054, China
| | - Hua Zhao
- Shaanxi Engineering Laboratory for Advanced Energy Technology and Key Laboratory of Macromolecular Science of Shaanxi Province, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, China
| | - Bin Liu
- Shaanxi Engineering Laboratory for Advanced Energy Technology and Key Laboratory of Macromolecular Science of Shaanxi Province, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, China
| | - Lijuan Cheng
- Shaanxi Engineering Laboratory for Advanced Energy Technology and Key Laboratory of Macromolecular Science of Shaanxi Province, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, China
| | - Heqing Yang
- Shaanxi Engineering Laboratory for Advanced Energy Technology and Key Laboratory of Macromolecular Science of Shaanxi Province, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, China.
| | - Shengzhong Liu
- Shaanxi Engineering Laboratory for Advanced Energy Technology and Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, China
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Chaudhary S, Kaur Y, Umar A, Chaudhary GR. 1-butyl-3-methylimidazolium tetrafluoroborate functionalized ZnO nanoparticles for removal of toxic organic dyes. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.05.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Cheng L, Wang M, Pei C, Liu B, Zhao H, Zhao H, Zhang C, Yang H, Liu S(F. Flowerlike Cu2Te architectures constructed from ultrathin nanoflakes as superior dye adsorbents for wastewater treatment. RSC Adv 2016. [DOI: 10.1039/c6ra10174g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Flowerlike architectures assembled from Cu2Te nanoflakes have been synthesized using a hydrothermal reaction of Te, Cu foils, and KBH4with H2O in the presence of ethanol amine (EA) at 200 °C for 12 h.
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Affiliation(s)
- Lijuan Cheng
- Shaanxi Engineering Laboratory for Advanced Energy Technology
- Key Laboratory of Macromolecular Science of Shaanxi Province
- School of Materials Science and Engineering
- Shaanxi Normal University
- Xi'an
| | - Miao Wang
- Shaanxi Engineering Laboratory for Advanced Energy Technology
- Key Laboratory of Macromolecular Science of Shaanxi Province
- School of Materials Science and Engineering
- Shaanxi Normal University
- Xi'an
| | - Cuijin Pei
- Shaanxi Engineering Laboratory for Advanced Energy Technology
- Key Laboratory of Macromolecular Science of Shaanxi Province
- School of Materials Science and Engineering
- Shaanxi Normal University
- Xi'an
| | - Bin Liu
- Shaanxi Engineering Laboratory for Advanced Energy Technology
- Key Laboratory of Macromolecular Science of Shaanxi Province
- School of Materials Science and Engineering
- Shaanxi Normal University
- Xi'an
| | - Hua Zhao
- Shaanxi Engineering Laboratory for Advanced Energy Technology
- Key Laboratory of Macromolecular Science of Shaanxi Province
- School of Materials Science and Engineering
- Shaanxi Normal University
- Xi'an
| | - Hui Zhao
- Key Laboratory of Macromolecular Science of Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710119
- China
| | - Congjie Zhang
- Key Laboratory of Macromolecular Science of Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710119
- China
| | - Heqing Yang
- Shaanxi Engineering Laboratory for Advanced Energy Technology
- Key Laboratory of Macromolecular Science of Shaanxi Province
- School of Materials Science and Engineering
- Shaanxi Normal University
- Xi'an
| | - Shengzhong (Frank) Liu
- Shaanxi Engineering Laboratory for Advanced Energy Technology
- Key Laboratory of Applied Surface and Colloid Chemistry
- Ministry of Education School of Materials Science and Engineering
- Shaanxi Normal University
- Xi'an
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Jauhar S, Kaur J, Goyal A, Singhal S. Tuning the properties of cobalt ferrite: a road towards diverse applications. RSC Adv 2016. [DOI: 10.1039/c6ra21224g] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Cobalt ferrite nanostructures have been established to be promising material for future aspects.
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Affiliation(s)
- Sheenu Jauhar
- Department of Chemistry
- Panjab University
- Chandigarh
- India
| | - Japinder Kaur
- Department of Chemistry
- Panjab University
- Chandigarh
- India
| | - Ankita Goyal
- Department of Chemistry
- Panjab University
- Chandigarh
- India
| | - Sonal Singhal
- Department of Chemistry
- Panjab University
- Chandigarh
- India
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12
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Pei C, Zhao H, Zhao Y, Liu B, Han G, Yuan Y, Shi Q, Yang H. Synthesis of ultralong NiSe nanobelts and their excellent adsorption properties towards malachite green in water. RSC Adv 2016. [DOI: 10.1039/c6ra23119e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
NiSe ultralong nanobelts were synthesized by a solvothermal reaction of Ni with Se and KBH4 in ethylenediamine and subsequent annealing in Ar, and employed as adsorbent for the removal of malachite green in wastewater.
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Affiliation(s)
- Cuijin Pei
- Shaanxi Key Laboratory for Advanced Energy Devices
- Shaanxi Engineering Laboratory for Advanced Energy Technology
- Key Laboratory of Macromolecular Science of the Shaanxi Province
- School of Materials Science and Engineering
- Shaanxi Normal University
| | - Hua Zhao
- Shaanxi Key Laboratory for Advanced Energy Devices
- Shaanxi Engineering Laboratory for Advanced Energy Technology
- Key Laboratory of Macromolecular Science of the Shaanxi Province
- School of Materials Science and Engineering
- Shaanxi Normal University
| | - Yan Zhao
- National Coal Inspection Centre
- Shaanxi Institute of Energy Quality Supervision and Inspection
- Xi'an
- China
| | - Bin Liu
- Shaanxi Key Laboratory for Advanced Energy Devices
- Shaanxi Engineering Laboratory for Advanced Energy Technology
- Key Laboratory of Macromolecular Science of the Shaanxi Province
- School of Materials Science and Engineering
- Shaanxi Normal University
| | - Guoping Han
- Shaanxi Key Laboratory for Advanced Energy Devices
- Shaanxi Engineering Laboratory for Advanced Energy Technology
- Key Laboratory of Macromolecular Science of the Shaanxi Province
- School of Materials Science and Engineering
- Shaanxi Normal University
| | - Yukun Yuan
- Shaanxi Key Laboratory for Advanced Energy Devices
- Shaanxi Engineering Laboratory for Advanced Energy Technology
- Key Laboratory of Macromolecular Science of the Shaanxi Province
- School of Materials Science and Engineering
- Shaanxi Normal University
| | - Qian Shi
- Shaanxi Key Laboratory for Advanced Energy Devices
- Shaanxi Engineering Laboratory for Advanced Energy Technology
- Key Laboratory of Macromolecular Science of the Shaanxi Province
- School of Materials Science and Engineering
- Shaanxi Normal University
| | - Heqing Yang
- Shaanxi Key Laboratory for Advanced Energy Devices
- Shaanxi Engineering Laboratory for Advanced Energy Technology
- Key Laboratory of Macromolecular Science of the Shaanxi Province
- School of Materials Science and Engineering
- Shaanxi Normal University
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Jacob NM, Thomas T. Nanorod to quantum dot conversion in ZnO dispersions with co-surfactants. RSC Adv 2015. [DOI: 10.1039/c4ra05778c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A chemically-induced nanorod to QD transition is achieved using co-surfactants. This is different from the physical instability driven transitions reported so far in nanowires and polymers. We propose a suitable mechanism for the observed phenomenon.
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Affiliation(s)
- Niya Mary Jacob
- Materials Research Centre
- Indian Institute of Science
- Bangalore-560012
- India
| | - Tiju Thomas
- Materials Research Centre
- Indian Institute of Science
- Bangalore-560012
- India
- Department of Metallurgical Engineering and Materials Science
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