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Lin B, Chen W, Lei Y, Ma X, Wang J, Li L. Solvothermal Preparation of Microporous Polyureas for Au(III) Adsorption. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:9001-9011. [PMID: 38627239 DOI: 10.1021/acs.langmuir.4c00305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
The enrichment and recovery of gold from wastewater are an alternative method to obtain this noble metal, which benefits reducing hazardous emissions from the conventional ore mining process and reserving natural gold for sustainable development. Inspired by our previous work (Lei et al., Macromol. Rapid Comm. 2022, 2200712), four families of microporous polyureas (mPPUs) with a large surface area (690 m2 g-1) and abundant heteroatom sites have been prepared via the factor-optimized solvothermal protocol. The resultant sample NPU-A starting from 1,5-naphthalene diisocyanate (NDI) and tri(4-aminophenyl) amine (TAPA) exhibits the maximum Au(III) adsorption capacity of 1300 mg g-1 and high selectivity even when the Au(III) concentration is as low as 0.1 mg L-1. This study not only demonstrates the robustness of the high-throughput synthetic strategy but also promotes the investigation of the structure-activity correlation between the mPPU chemical structure and Au(III) adsorption performance.
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Affiliation(s)
- Bo Lin
- College of Materials, Xiamen University, Xiamen 361005, P. R. China
| | - Wangzhi Chen
- College of Materials, Xiamen University, Xiamen 361005, P. R. China
| | - Yujie Lei
- College of Materials, Xiamen University, Xiamen 361005, P. R. China
| | - Xingyu Ma
- College of Materials, Xiamen University, Xiamen 361005, P. R. China
| | - Jieyao Wang
- College of Materials, Xiamen University, Xiamen 361005, P. R. China
| | - Lei Li
- College of Materials, Xiamen University, Xiamen 361005, P. R. China
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Laxmi, Shahzaib A, Alam M, Ghosal A, Zafar F, Nishat N. Development of nanostructured green divalent manganese‐coordinated polyurea. J Appl Polym Sci 2022. [DOI: 10.1002/app.52993] [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)
- Laxmi
- Inorganic Materials Research Lab, Department of Chemistry Jamia Millia Islamia New Delhi India
- Government College Faridabad India
| | - Adnan Shahzaib
- Inorganic Materials Research Lab, Department of Chemistry Jamia Millia Islamia New Delhi India
| | - Manawwer Alam
- Department of Chemistry College of Science, King Saud University Riyadh Saudi Arabia
| | - Anujit Ghosal
- Richardson Centre for Food Technology and Research, Department of Food & Human Nutritional Sciences The University of Manitoba Winnipeg Canada
| | - Fahmina Zafar
- Inorganic Materials Research Lab, Department of Chemistry Jamia Millia Islamia New Delhi India
| | - Nahid Nishat
- Inorganic Materials Research Lab, Department of Chemistry Jamia Millia Islamia New Delhi India
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Cui X, Guo J, Araby S, Abbassi F, Zhang C, Diaby AL, Meng Q. Porous polyvinyl alcohol/graphene oxide composite film for strain sensing and energy-storage applications. NANOTECHNOLOGY 2022; 33:415701. [PMID: 35732160 DOI: 10.1088/1361-6528/ac7b35] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 06/22/2022] [Indexed: 06/15/2023]
Abstract
In this study, a flexible porous polyvinyl alcohol (PVA)/graphene oxide (GO) composite film was developed and tested for flexible strain sensing and energy-storage applications. Morphology and mechanical properties were studied; tensile strength and Young's modulus increased by 225% and 86.88%, respectively, at 0.5 wt% GO. The PVA/GO film possesses exceptional sensing ability to various mechanical strains, such as tension, compression, bending, and torsion. For example, the gauge factor of the PVA/GO film as a tensile-strain sensor was measured as 2.46 (246%). Under compression loads, the PVA/GO composite film showed piezoresistive and capacitive strain-sensing characteristics. Under 5 kPa of compression load, the relative resistance increased by 81% with a 100 msec response time; the relative capacitance increased by 160% with a 120 msec response time. The PVA/GO strain sensor exhibited high durability and reliability over 20 × 103cycles of tensile strain and bending at 3.33 Hz. Moreover, the PVA/GO composite film showed good electrochemical properties due to its porous structure; the maximum capacitance was 124.7 F g-1at 0.5 wt% GO. After 20 × 103charging-discharging cycles, the capacitance retention rate was 94.45%, representing high stable capacitance performance. The results show that electrically conductive porous PVA nanocomposite films are promising candidates for strain sensing and energy-storage devices.
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Affiliation(s)
- Xu Cui
- College of Civil Aviation, Shenyang Aerospace University, Shenyang 110136, People's Republic of China
| | - Jia Guo
- College of Civil Aviation, Shenyang Aerospace University, Shenyang 110136, People's Republic of China
| | - Sherif Araby
- Department of Mechanical and Aerospace Engineering, Nazarbayev University, Nur-Sultan, 010000, Kazakhstan
- Department of Mechanical Engineering, Faculty of Engineering, Benha University, Benha, Egypt
| | - Fethi Abbassi
- College of Engineering and Technology, American University of the Middle East, Kuwait
| | - Chunyan Zhang
- College of Civil Aviation, Shenyang Aerospace University, Shenyang 110136, People's Republic of China
| | | | - Qingshi Meng
- College of Civil Aviation, Shenyang Aerospace University, Shenyang 110136, People's Republic of China
- College of Aerospace Engineering, Shenyang Aerospace University, Shenyang 110136, People's Republic of China
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Cui X, Zhang C, Araby S, Cai R, Kalimuldina G, Yang Z, Meng Q. Multifunctional, flexible and mechanically resilient porous polyurea/graphene composite film. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2021.10.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Polyureas Versatile Polymers for New Academic and Technological Applications. Polymers (Basel) 2021; 13:polym13244393. [PMID: 34960942 PMCID: PMC8708372 DOI: 10.3390/polym13244393] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 08/27/2021] [Accepted: 09/22/2021] [Indexed: 01/04/2023] Open
Abstract
Polyureas (PURs) are a competitive polymer to their analogs, polyurethanes (PUs). Whereas PUs' main functional group is carbamate (urethane), PURs contain urea. In this revision, a comprehensive overview of PUR properties, from synthesis to technical applications, is displayed. Preparative routes that can be used to obtain PURs using diisocianates or harmless reagents such as CO2 and NH3 are explained, and aterials, urea monomers and PURs are discussed; PUR copolymers are included in this discussion as well. Bulk to soft components of PUR, as well as porous materials and meso, micro or nanomaterials are evaluated. Topics of this paper include the general properties of aliphatic and aromatic PUR, followed by practical synthetic pathways, catalyst uses, aggregation, sol-gel formation and mechanical aspects.
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Preparation of Polystyrene Microsphere-Templated Porous Monolith for Wastewater Filtration. MATERIALS 2021; 14:ma14237165. [PMID: 34885320 PMCID: PMC8658112 DOI: 10.3390/ma14237165] [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: 10/18/2021] [Revised: 11/11/2021] [Accepted: 11/12/2021] [Indexed: 11/22/2022]
Abstract
Porous monoliths prepared using templates are highly sought after for filtration applications due to their good mass transport properties and high permeability. Current templates, however, often lead to the formation of dead-end pores and irregular pore distributions, which reduce the efficiency of the substrate flow across the monolith column. This study focused on the preparation of a microsphere-templated porous monolith for wastewater filtration. The optimal template/monomer ratio (50:50, 60:40, 70:30) was determined, and appropriate template removal techniques were assessed for the formation of homogenous pores. The physicochemical characteristics and pore homogeneity of the monoliths were examined. The 60:40 ratio was determined to result in monoliths with homogeneous pore distributions ranging from 1.9 μm to 2.3 μm. SEM and FTIR investigations revealed that solvent treatment was effective for removing templates from the resulting solid monolith. The water quality assessments revealed reductions in the turbidity and the total number of suspended particles in the tested wastewater of up to 96–99%. The findings of this study provide insightful knowledge regarding the fabrication of monoliths with homogenous pores that are beneficial for wastewater treatment.
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Stoichiometric modulation of triazine based polyurea frameworks for carbon dioxide capture. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Paraskevopoulou P, Raptopoulos G, Leontaridou F, Papastergiou M, Sakellari A, Karavoltsos S. Evaluation of Polyurea-Crosslinked Alginate Aerogels for Seawater Decontamination. Gels 2021; 7:gels7010027. [PMID: 33806357 PMCID: PMC8005931 DOI: 10.3390/gels7010027] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 02/14/2021] [Accepted: 02/22/2021] [Indexed: 12/20/2022] Open
Abstract
Polyurea-crosslinked Ca-alginate (X-Ca-alginate) aerogel beads (diameter: 3.3 mm) were evaluated as adsorbents of metal ions, organic solvents, and oils. They were prepared via reaction of an aromatic triisocyanate (Desmodur RE) with pre-formed Ca-alginate wet gels and consisted of 54% polyurea and 2% calcium. X-Ca-alginate aerogels are hydrophobic nanoporous materials (90% v/v porosity), with a high BET surface area (459 m2/g−1), and adsorb PbII not only from ultrapure water (29 mg/g−1) but also from seawater (13 mg/g−1) with high selectivity. The adsorption mechanism involves replacement of CaII by PbII ions coordinated to the carboxylate groups of the alginate backbone. After treatment with a Na2EDTA solution, the beads can be reused, without significant loss of activity for at least two times. X-Ca-alginate aerogels can also uptake organic solvents and oil from seawater; the volume of the adsorbate can be as high as the total pore volume of the aerogel (6.0 mL/g−1), and the absorption is complete within seconds. X-Ca alginate aerogels are suitable for the decontamination of aquatic environments from a broader range of inorganic and organic pollutants.
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Affiliation(s)
- Patrina Paraskevopoulou
- Inorganic Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (G.R.); (F.L.); (M.P.)
- Correspondence: (P.P.); (S.K.); Tel.: +30-210-727-4381 (P.P.); 30-210-727-4269 (S.K.)
| | - Grigorios Raptopoulos
- Inorganic Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (G.R.); (F.L.); (M.P.)
| | - Faidra Leontaridou
- Inorganic Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (G.R.); (F.L.); (M.P.)
| | - Maria Papastergiou
- Inorganic Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (G.R.); (F.L.); (M.P.)
| | - Aikaterini Sakellari
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15784 Athens, Greece;
| | - Sotirios Karavoltsos
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15784 Athens, Greece;
- Correspondence: (P.P.); (S.K.); Tel.: +30-210-727-4381 (P.P.); 30-210-727-4269 (S.K.)
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Zhang X, Jiang X, Zhu X, Kong XZ. Effective enhancement of Cu ions adsorption on porous polyurea adsorbent by carboxylic modification of its terminal amine groups. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2019.104450] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Huang D, Qin Z, Liu Y, Di D, Wang H, Liu Y, Yang W. Synthesis of porous materials of high mechanical strength with graphene quantum dots. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.10.087] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Soares SF, Rodrigues MI, Trindade T, Daniel-da-Silva AL. Chitosan-silica hybrid nanosorbents for oil removal from water. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.04.076] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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