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Pawariya V, De S, Dutta J. Chitosan-based Schiff bases: Promising materials for biomedical and industrial applications. Carbohydr Polym 2024; 323:121395. [PMID: 37940288 DOI: 10.1016/j.carbpol.2023.121395] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/28/2023] [Accepted: 09/12/2023] [Indexed: 11/10/2023]
Abstract
There is plenty of scope for modifying chitosan, an only polycationic natural polysaccharide, owing to its reactive functional groups, namely hydroxyl and amino groups. Although innumerable numbers of chitosan derivatives have been synthesized by modifying these groups and reported elsewhere, in this review article, an attempt has been exclusively made to demonstrate the syntheses of various chitosan-based Schiff bases (CSBs) simply by allowing the reactions of reactive amino groups of chitosan with different aldehydes/ketones of interest. Due to their very peculiar and unique characteristics, such as biodegradability, biocompatibility, metal-binding capability, etc., they are found to be very useful for diversified applications. Thus, we have also attempted to showcase their very specific biomedical fields, including tissue engineering, drug delivery, and wound healing, to name a few. In addition, we have also discussed the utilization of CSBs for industrial applications such as wastewater treatment, catalysis, corrosion inhibition, sensors, etc.
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Affiliation(s)
- Varun Pawariya
- Department of Chemistry, Amity School of Applied Sciences, Amity University Haryana, Gurgaon 122413, Haryana, India
| | - Soumik De
- Department of Chemistry, National Institute of Technology, Silchar, Silchar, Assam 788010, India
| | - Joydeep Dutta
- Department of Chemistry, Amity School of Applied Sciences, Amity University Haryana, Gurgaon 122413, Haryana, India.
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2
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Agha HM, Abdulhameed AS, Jawad AH, Sidik NJ, Aazmi S, ALOthman ZA, Wilson LD, Algburi S. Physicochemical fabrication of chitosan and algae with crosslinking glyoxal for cationic dye removal: Insight into optimization, kinetics, isotherms, and adsorption mechanism. Int J Biol Macromol 2023; 253:127112. [PMID: 37774818 DOI: 10.1016/j.ijbiomac.2023.127112] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/20/2023] [Accepted: 09/26/2023] [Indexed: 10/01/2023]
Abstract
Herein, a highly efficient and sustainable adsorbent of cross-linked chitosan-glyoxal/algae biocomposite (CHT-GLX/ALG) adsorbent was developed through an innovative hydrothermal cross-linking method. The CHT-GLX/ALG biocomposite was characterized using several complementary analytical methods that include CHN-O, XRD, FTIR, SEM-EDX, and pHpzc. This new adsorbent, named CHT-GLX/ALG, was utilized for the adsorption of a cationic dye (methyl violet 2B; MV 2B), from synthetic wastewater. The optimization of the dye adsorption process involved key parameters is listed: CHT-GLX/ALG dosage (from 0.02 to 0.1 g/100 mL), pH (from 4 to 10), and contact time (from 20 to 180 min) that was conducted using the Box-Behnken design (BBD). The optimal adsorption conditions for the highest decolorization efficiency of MV 2B (97.02 %) were estimated using the statistical model of the Box-Behnken design. These conditions include a fixed adsorbent dosage of 0.099 g/100 mL, pH 9.9, and a 179.9 min contact time. The empirical data of MV 2B adsorption by CHT-GLX/ALG exhibited favorable agreement with the Freundlich isotherm model. The kinetic adsorption profile of MV 2B by CHT-GLX/ALG revealed a good fit with the pseudo-second-order model. The maximum adsorption capacity (qmax) for MV 2B by CHT-GLX/ALG was estimated at 110.8 mg/g. The adsorption of MV 2B onto the adsorbent can be attributed to several factors, including electrostatic interactions between the negatively charged surface of CHT-GLX/ALG and the MV 2B cation, as well as n-π and H-bonding. These interactions play a crucial role in facilitating the effective adsorption of MV 2B onto the biocomposite adsorbent. Generally, this study highlights the potential of CHT-GLX/ALG as an efficient and sustainable adsorbent for the effective removal of organic dyes.
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Affiliation(s)
- Hasan M Agha
- Advanced Biomaterials and Carbon Development Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
| | - Ahmed Saud Abdulhameed
- Department of Pharmaceutical Chemistry, College of Pharmacy, University of Anbar, Ramadi, Iraq; College of Engineering, University of Warith Al-Anbiyaa, Karbala, Iraq
| | - Ali H Jawad
- Advanced Biomaterials and Carbon Development Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia; Environmental and Atmospheric Sciences Research Group, Scientific Research Center, Al-Ayen University, Thi-Qar, Nasiriyah 64001, Iraq.
| | - Norrizah Jaafar Sidik
- School of Biology, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
| | - Shafiq Aazmi
- School of Biology, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
| | - Zeid A ALOthman
- Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Lee D Wilson
- Department of Chemistry, University of Saskatchewan, Saskatoon, SK S7N 5C9, Canada
| | - Sameer Algburi
- College of Engineering Technology, Al-Kitab University, Kirkuk, Iraq
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3
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Kujur JP, Moon PR, Pathak DD. Surface modification of chitosan with Ni(II) Schiff base complex: A new heterogeneous catalyst for the synthesis of xanthones. Int J Biol Macromol 2023; 252:126497. [PMID: 37640183 DOI: 10.1016/j.ijbiomac.2023.126497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 08/16/2023] [Accepted: 08/22/2023] [Indexed: 08/31/2023]
Abstract
A new biocomposite of chitosan, chitosan-supported di(pyridine-2-yl)methanone-Ni(II) complex, CS-DPM-Ni, is synthesized for the first time. The biocomposite is thoroughly characterized by FTIR, PXRD, XPS, FESEM, EDX, TGA, ICP-OES, and elemental analysis. The synthesized composite is successfully used as a heterogeneous catalyst in the synthesis of a library of xanthone derivatives by the intermolecular catalytical coupling of 2-substituted benzaldehydes and phenols. The catalyst could be retrieved from the reaction mixture by simple filtration and reused for up to four catalytic cycles. All products were isolated in good to high yields (65-90 %) with good turnover numbers (TONs), and fully characterized by 1H and 13C{1H} NMR spectroscopy. The green chemistry metrics values for the reaction were discerned and found to be close to the ideal values.
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Affiliation(s)
- Jyoti Prabha Kujur
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM) Dhanbad, 826004, India
| | - Pritish Rajkumar Moon
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM) Dhanbad, 826004, India
| | - Devendra Deo Pathak
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM) Dhanbad, 826004, India.
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4
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Rapid adsorption of some heavy metals using extracted chitosan anchored with new aldehyde to form a schiff base. PLoS One 2022; 17:e0274123. [PMID: 36084104 PMCID: PMC9462815 DOI: 10.1371/journal.pone.0274123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 08/23/2022] [Indexed: 11/19/2022] Open
Abstract
A new aldehyde 2,2’-[propane-1,3-diylbis(oxy)] dibenzaldehyde was synthesized from refluxing 2-hydroxy acetophenone and 2-hydroxy 1,3-dichloropropanean in an alcoholic medium. The compositions and properties of the new aldehyde compound were characterized by elemental analysis, FTIR, and nuclear magnetic resonance spectroscopy studies. The extracted chitosan was made to react with a new aldehyde to form a Schiff base by a suitable method. The effects of initial concentration of metal ions, exposure time, imine weight, and pH on the adsorption of Cu(II), Cr(III), and Zn(II) metal ions were examined. An adsorption batch experiment was conducted. The adsorption process followed a second-order reaction and Langmuir model with qe 25 mg/g, 121 mg/g, and 26.31 mg/g for Cu(II), Zn(II), and Cr(III) respectively. The Gibbs free energy showed a negative value and the adsorption/desorption tests provided a high value 5 times.
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Ansari MJ, Jasim SA, Bokov DO, Thangavelu L, Yasin G, Khalaji AD. Preparation of new bio-based chitosan/Fe 2O 3/NiFe 2O 4 as an efficient removal of methyl green from aqueous solution. Int J Biol Macromol 2022; 198:128-134. [PMID: 34968538 DOI: 10.1016/j.ijbiomac.2021.12.082] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 11/20/2021] [Accepted: 12/14/2021] [Indexed: 12/26/2022]
Abstract
Modified chitosan with various functional groups has high potential as an efficient adsorbent in removing water pollution. In this study, new magnetic adsorbent, bio-based chitosan/Fe2O3/NiFe2O4, was successfully prepared by green chemistry route involving mixing of chitosan as core moiety and Fe2O3/NiFe2O4 nanocomposite, and slow evaporation of solvent. Synthesized chitosan/Fe2O3/NiFe2O4 was characterized by FT-IR, TGA, XRD, VSM and FE-SEM. The FT-IR and XRD results confirmed that the successful preparation of chitosan/Fe2O3/NiFe2O4. Uniform dispersion of Fe2O3/NiFe2O4 nanoparticles with low aggregation was confirmed by FE-SEM. The as-prepared magnetic chitosan/Fe2O3/NiFe2O4 was developed as solid phase adsorbent to remove methyl green (MG) dye from aqueous solutions. Several important parameters such as contact time, pH, temperature and adsorbent dosage were investigated systematically. The high and fast MG dye removal (≈ 80%) occurs after 30 min. The optimal conditions for MG removal was recorded at pH = 8, contact time of 60 min, adsorbent dosage of 0.2 g and 25 °C and displayed a high MG dye removal percentage of 96.51% and adsorption capacity of 77.22 mg/g.
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Affiliation(s)
- Mohammad Javed Ansari
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam Bin Abdulaziz, University, Al-kharj, Saudi Arabia.
| | - Saade Abdalkareem Jasim
- Al-maarif University College, Medical Laboratory Techniques Department, Al-anbar-Ramadi, Iraq
| | - Dmitry Olegovich Bokov
- Institute of Pharmacy, Sechenov First Moscow State Medical University, 8 Trubetskaya St., bldg. 2, Moscow, 119991, Russian Federation; Laboratory of Food Chemistry, Federal Research Center of Nutrition, Biotechnology and Food Safety, 2/14 Ustyinsky pr., Moscow, 109240, Russian Federation
| | - Lakshmi Thangavelu
- Department of Pharmacology, Saveetha Dental College, Saveetha Institute of Medical and Technical Science, Saveetha University, Chennai, India.
| | - Ghulam Yasin
- Department of Chemistry, Faculty of Science, Golestan University, Gorgan, Iran
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6
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Lazzarini A, Colaiezzi R, Gabriele F, Crucianelli M. Support-Activity Relationship in Heterogeneous Catalysis for Biomass Valorization and Fine-Chemicals Production. MATERIALS 2021; 14:ma14226796. [PMID: 34832198 PMCID: PMC8619138 DOI: 10.3390/ma14226796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/04/2021] [Accepted: 11/09/2021] [Indexed: 11/16/2022]
Abstract
Heterogeneous catalysts are progressively expanding their field of application, from high-throughput reactions for traditional industrial chemistry with production volumes reaching millions of tons per year, a sector in which they are key players, to more niche applications for the production of fine chemicals. These novel applications require a progressive utilization reduction of fossil feedstocks, in favor of renewable ones. Biomasses are the most accessible source of organic precursors, having as advantage their low cost and even distribution across the globe. Unfortunately, they are intrinsically inhomogeneous in nature and their efficient exploitation requires novel catalysts. In this process, an accurate design of the active phase performing the reaction is important; nevertheless, we are often neglecting the importance of the support in guaranteeing stable performances and improving catalytic activity. This review has the goal of gathering and highlighting the cases in which the supports (either derived or not from biomass wastes) share the worth of performing the catalysis with the active phase, for those reactions involving the synthesis of fine chemicals starting from biomasses as feedstocks.
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Nasrollahzadeh M, Shafiei N, Nezafat Z, Soheili Bidgoli NS, Soleimani F. Recent progresses in the application of cellulose, starch, alginate, gum, pectin, chitin and chitosan based (nano)catalysts in sustainable and selective oxidation reactions: A review. Carbohydr Polym 2020; 241:116353. [DOI: 10.1016/j.carbpol.2020.116353] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/07/2020] [Accepted: 04/19/2020] [Indexed: 10/24/2022]
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8
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Malekshah RE, Shakeri F, Khaleghian A, Salehi M. Developing a biopolymeric chitosan supported Schiff-base and Cu(II), Ni(II) and Zn(II) complexes and biological evaluation as pro-drug. Int J Biol Macromol 2020; 152:846-861. [DOI: 10.1016/j.ijbiomac.2020.02.245] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 02/16/2020] [Accepted: 02/22/2020] [Indexed: 12/13/2022]
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9
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Vadivel T, Dhamodaran M, Kulathooran S, Kavitha S, Amirthaganesan K, Chandrasekaran S, Ilayaraja S, Senguttuvan S. Rhodium(III) complexes derived from complexation of metal with azomethine linkage of chitosan biopolymer Schiff base ligand: Spectral, thermal, morphological and electrochemical studies. Carbohydr Res 2020; 487:107878. [DOI: 10.1016/j.carres.2019.107878] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 11/03/2019] [Accepted: 11/14/2019] [Indexed: 10/25/2022]
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10
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Khan AM, Abid OUR, Mir S. Assessment of biological activities of chitosan Schiff base tagged with medicinal plants. Biopolymers 2019; 111:e23338. [PMID: 31696516 DOI: 10.1002/bip.23338] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Revised: 10/04/2019] [Accepted: 10/11/2019] [Indexed: 11/05/2022]
Abstract
A chitosan Schiff base with an aromatic aldehyde was synthesized and characterized by FTIR and NMR spectroscopies. Furthermore, the degree of substitution was calculated based on the ratios of the area of the proton of the imine (Aimine ) and the area of the peak of the proton of the pyranose ring (AH-2 ). The antimicrobial activities were determined against bacterial and fungal strains, as well as multiple drug-resistant (MDR) bacteria. The chitosan Schiff base was also tagged with medicinal plants, for example, Curcuma longa, Peganum harmala, Lepidium sativam, and cruciferous vegetables, and the biological activities determined against pathogenic bacterial and fungal strains. The chitosan Schiff base showed maximum zone of inhibition of 22 mm against Staphylococcus aureus with a minimum zone of inhibition of 15 mm against Bacillus cereus. The chitosan Schiff base was fused with C longa, isothiocyanates and a combined mixture of P harmala and L sativam that has shown activities against Escherichia coli with a zone of inhibition of 28, 24, and 30 mm, respectively. The Schiff base of chitosan fused with medicinal plants also showed significant inhibitory activities against MDR bacteria.
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Affiliation(s)
- Arshad Mehmood Khan
- Department of Chemistry, Hazara University, Mansehra, Pakistan.,Department of Chemistry, Government Postgraduate College Mandian, Abbottabad, Pakistan
| | | | - Sadullah Mir
- Department of Chemistry, COMSAT University, Islamabad, Abbottabad Campus-22060, KPK, Pakistan
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12
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Antony R, Arun T, Manickam STD. A review on applications of chitosan-based Schiff bases. Int J Biol Macromol 2019; 129:615-633. [PMID: 30753877 DOI: 10.1016/j.ijbiomac.2019.02.047] [Citation(s) in RCA: 154] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 02/01/2019] [Accepted: 02/07/2019] [Indexed: 02/07/2023]
Abstract
Biopolymers have become very attractive as they are degradable, biocompatible, non-toxic and renewable. Due to the intrinsic reactive amino groups, chitosan is vibrant in the midst of other biopolymers. Using the versatility of these amino groups, various structural modifications have been accomplished on chitosan through certain chemical reactions. Chemical modification of chitosan via imine functionalization (RR'CNR″; R: alkyl/aryl, R': H/alkyl/aryl and R″: chitosan ring) is significant as it recommends the resultant chitosan-based Schiff bases (CSBs) for the important applications in the fields like biology, catalysis, sensors, water treatment, etc. CSBs are usually synthesized by the Schiff condensation reaction between chitosan's amino groups and carbonyl compounds with the removal of water molecules. In this review, we first introduce the available synthetic approaches for the preparation of CSBs. Then, we discuss the biological applications of CSBs including antimicrobial activity, anticancer activity, drug carrier ability, antioxidant activity and tissue engineering capacity. Successively, the applications of CSBs in other fields such as catalysis, adsorption and sensors are demonstrated.
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Affiliation(s)
- R Antony
- Centre for Scientific and Applied Research, PSN College of Engineering and Technology (Autonomous), Tirunelveli 627152, Tamil Nadu, India.
| | - T Arun
- Department of Chemistry, Kamaraj College, Thoothukudi 628003, Tamil Nadu, India
| | - S Theodore David Manickam
- Centre for Scientific and Applied Research, PSN College of Engineering and Technology (Autonomous), Tirunelveli 627152, Tamil Nadu, India.
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Saikia G, Ahmed K, Gogoi SR, Sharma M, Talukdar H, Islam NS. A chitosan supported peroxidovanadium(V) complex: Synthesis, characterization and application as an eco-compatible heterogeneous catalyst for selective sulfoxidation in water. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.11.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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14
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Antony R, Marimuthu R, Vishnoi P, Murugavel R. Ethoxysilane appended M(II) complexes and their SiO2/MCM-41 supported forms as catalysts for efficient oxidation of secondary alcohols. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.09.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Narang S, Mehta R, Upadhyay SN. Solvent-free cycloaddition of CO 2 and propylene oxide to cyclic carbonates using different ligand metal complexes. INORG NANO-MET CHEM 2017. [DOI: 10.1080/15533174.2016.1228673] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Shilpa Narang
- School of Chemistry and Biochemistry, Thapar University, Patiala, Punjab, India
| | - Rajeev Mehta
- Department of Chemical Engineering & Technology, Thapar University, Patiala, Punjab, India
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de Araújo EL, Barbosa HFG, Dockal ER, Cavalheiro ÉTG. Synthesis, characterization and biological activity of Cu(II), Ni(II) and Zn(II) complexes of biopolymeric Schiff bases of salicylaldehydes and chitosan. Int J Biol Macromol 2017; 95:168-176. [DOI: 10.1016/j.ijbiomac.2016.10.109] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 10/21/2016] [Accepted: 10/30/2016] [Indexed: 01/13/2023]
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17
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El-Araby HA, Ibrahim AMMA, Mangood AH, Abdel-Rahman AAH. Sesame Husk as Adsorbent for Copper(II) Ions Removal from Aqueous Solution. ACTA ACUST UNITED AC 2017. [DOI: 10.4236/gep.2017.57011] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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18
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Chen Z, Fang T, Yuan S, Yin H. Kinetics Study on Oxidation of β-Isophorone Using Molecular Oxygen. INT J CHEM KINET 2016. [DOI: 10.1002/kin.20987] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Zhirong Chen
- College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 People's Republic of China
| | - Tingting Fang
- College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 People's Republic of China
| | - Shenfeng Yuan
- College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 People's Republic of China
| | - Hong Yin
- College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 People's Republic of China
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Yu P, Zhou Y, Yang Y, Tang R. Two catalytic systems of l-proline/Cu(ii) catalyzed allylic oxidation of olefins with tert-butyl hydroperoxide. RSC Adv 2016. [DOI: 10.1039/c6ra11784h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Allylic oxidation of olefins by the two catalytic system of l-proline/Cu(ii).
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Affiliation(s)
- Peng Yu
- Science College of Hunan Agricultural University
- China
| | - Yin Zhou
- School of Chemistry and Chemical Engineering
- Central South University
- China
| | - Yingwei Yang
- School of Chemistry and Chemical Engineering
- Central South University
- China
| | - Ruiren Tang
- School of Chemistry and Chemical Engineering
- Central South University
- China
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20
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Moussout H, Ahlafi H, Aazza M, Zegaoui O, El Akili C. Adsorption studies of Cu(II) onto biopolymer chitosan and its nanocomposite 5%bentonite/chitosan. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2016; 73:2199-2210. [PMID: 27148722 DOI: 10.2166/wst.2016.075] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Chitosan (CS) and nanocomposite 5%bentonite/chitosan (5%Bt/CS) prepared from the natural biopolymer CS were tested to remove Cu(II) ions using a batch adsorption experiment at various temperatures (25, 35 and 45°C). X-ray diffraction, Fourier transform infrared spectroscopy, and thermogravimetric analysis/differential thermal analysis (TGA/DTA) were used in CS and the nanocomposite characterisation. This confirmed the exfoliation of bentonite (Bt) to form the nanocomposite. The adsorption kinetics of copper on both solids was found to follow a pseudo-second-order law at each studied temperature. The Cu(II) adsorption capacity increased as the temperature increased from 25 to 45°C for nanocomposite adsorbent but slightly increased for CS. The data were confronted to the nonlinear Langmuir, Freundlich and Redlich-Peterson models. It was found that the experimental data fitted very well the Langmuir isotherm over the whole temperature and concentration ranges. The maximum monolayer adsorption capacity for the Cu(II) was 404-422 mg/g for CS and 282-337 mg/g for 5%Bt/CS at 25-45°C. The thermodynamic study showed that the adsorption process was spontaneous and endothermic. The complexation of Cu(II) with NH(2) and C = O groups as active sites was found to be the main mechanism in the adsorption processes.
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Affiliation(s)
- Hamou Moussout
- Laboratory of Chemistry Biology Applied to the Environment, Faculty of Sciences, Moulay Ismaïl University, BP 11201-Zitoune, Meknès 50060, Morocco E-mail:
| | - Hammou Ahlafi
- Laboratory of Chemistry Biology Applied to the Environment, Faculty of Sciences, Moulay Ismaïl University, BP 11201-Zitoune, Meknès 50060, Morocco E-mail:
| | - Mustapha Aazza
- Laboratory of Chemistry Biology Applied to the Environment, Faculty of Sciences, Moulay Ismaïl University, BP 11201-Zitoune, Meknès 50060, Morocco E-mail:
| | - Omar Zegaoui
- Laboratory of Chemistry Biology Applied to the Environment, Faculty of Sciences, Moulay Ismaïl University, BP 11201-Zitoune, Meknès 50060, Morocco E-mail:
| | - Charaf El Akili
- Laboratory of Mechanics Energetics and Materials, Ecole Nationale Supérieure d'Arts et Métiers, Moulay Ismaïl University, Meknes, Morocco
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21
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Cobalt-chitosan: Magnetic and biodegradable heterogeneous catalyst for selective aerobic oxidation of alkyl arenes and alcohols. J CHEM SCI 2015. [DOI: 10.1007/s12039-015-0959-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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