1
|
Zhang L, Mo H, Wang C, Li X, Jiang S, Fan W, Zhang Y. Synthesis and Properties of Cefixime Core-Shell Magnetic Nano-Molecularly Imprinted Materials. Polymers (Basel) 2023; 15:4464. [PMID: 38006188 PMCID: PMC10674183 DOI: 10.3390/polym15224464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/12/2023] [Accepted: 11/14/2023] [Indexed: 11/26/2023] Open
Abstract
Novel core-shell magnetic molecularly imprinted polymers (MMIPs) were synthesized using the sol-gel method for the adsorption of cefixime (CFX). Fe3O4@SiO2 is the core, and molecularly imprinted polymers (MIPs) are the shell, which can selectively interact with CFX. The preparation conditions, adsorption kinetics, adsorption isotherms, selective adsorption ability, and reutilization performance of the MMIPs were investigated. The adsorption capacity of MMIPs for CFX was 111.38 mg/g, which was about 3.5 times that of MNIPs. The adsorption equilibrium time was 180 min. The dynamic adsorption experiments showed that the adsorption process of MMIPs to CFX conformed to the pseudo-second-order model. Through static adsorption study, the Scatchard analysis showed that MMIPs had two types of binding sites-the high-affinity binding sites and the low-affinity binding sites-while the Langmuir model fit the adsorption isotherms well (R2 = 0.9962). Cefepime and ceftiofur were selected as the structural analogs of CFX for selective adsorption studies; the adsorption of CFX by MMIPs was higher than that of other structural analogs; and the imprinting factors of CFX, cefepime, and ceftiofur were 3.5, 1.7, and 1.4, respectively. Furthermore, the MMIPs also showed excellent reusable performance.
Collapse
Affiliation(s)
- Li Zhang
- College of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi 830054, China;
| | - Hongbo Mo
- Chongqing Academy of Metrology and Quality Inspection, Chongqing 401123, China
| | - Chuan Wang
- Chongqing Academy of Metrology and Quality Inspection, Chongqing 401123, China
| | - Xiaofeng Li
- Chongqing Academy of Metrology and Quality Inspection, Chongqing 401123, China
| | - Shuai Jiang
- Chongqing Academy of Metrology and Quality Inspection, Chongqing 401123, China
| | - Weigang Fan
- College of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi 830054, China;
| | - Yagang Zhang
- School of Materials and Energy, University of Electronic Science and Technology, Chengdu 611731, China;
| |
Collapse
|
2
|
Selective Adsorption of Quercetin by the Sol-Gel Surface Molecularly Imprinted Polymer. Polymers (Basel) 2023; 15:polym15040905. [PMID: 36850189 PMCID: PMC9962813 DOI: 10.3390/polym15040905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 02/06/2023] [Accepted: 02/09/2023] [Indexed: 02/16/2023] Open
Abstract
Quercetin, as one of the most biologically active natural flavonoids, is widely found in various vegetables, fruits and Chinese herbs. In this work, molecularly imprinted polymer (MIP) was synthesized through surface molecular imprinting technology with sol-gel polymerization mechanism on SiO2 at room temperature using quercetin as the template, SiO2 as the supporter, 3-aminopropyltriethoxysilane (APTES) as the functional monomer, and tetraethoxysilane (TEOS) as the cross-linker. The prepared MIP was characterized via scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR) and nitrogen adsorption measurements to validate its surface morphology, structure and functionality. SEM images revealed that the morphology of MIP was rough and spherical with the particle size of 260 nm larger than that of the support SiO2. In the FTIR spectra of MIP, the band around 1499 cm-1 and 2932 cm-1 were assigned to N-H and C-H groups, respectively. The results indicated that the imprinted polymer layers were grafted on the surface of SiO2 and the MIP had been successfully prepared. Since the specific surface area and pore volume of MIP were markedly higher than those of NIP and SiO2 and were 52.10 m2 g-1 and 0.150 cm3 g-1, respectively, it was evident that the imprinting process created corresponding imprinted cavities and porosity. The MIP for adsorbing quercetin was evaluated by static adsorption experiment. The results indicated that the adsorption equilibrium could be reached within 90 min and the maximum adsorption capacity was as high as 35.70 mg/g. The mechanism for adsorption kinetics and isotherm of MIP for quercetin was proved to conform the pseudo-second-order kinetics model (R2 = 0.9930) and the Freundlich isotherm model (R2 = 0.9999), respectively, revealing that chemical adsorption and heterogeneous surface with multilayer adsorption dominated. In contrast to non-imprinted polymer (NIP), the MIP demonstrated high selectivity and specific recognition towards quercetin whose selectivity coefficients for quercetin relative to biochanin A were 1.61. Furthermore, the adsorption capacity of MIP can be maintaining above 90% after five regeneration cycles, indicating brilliant reusability and potential application for selective adsorption of quercetin.
Collapse
|
3
|
Uncontrolled Disposal of Used Masks Resulting in Release of Microplastics and Co-Pollutants into Environment. WATER 2022. [DOI: 10.3390/w14152403] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The global panic caused by COVID-19 has continued to increase people’s demand for masks. However, due to inadequate management and disposal practice, these masks have, unfortunately, entered the environment and release a large amount of microplastics (MPs), posing a serious threat to the environment and human health. Understanding the occurrence of mask waste in various environments, release of mask-origin MPs, and related environmental risk is essential to mask-waste management in current and future epidemic prevention and control. This paper focuses on the global distribution of mask waste, the potential release of waste-origin MPs, and the impact on the environment. Specifically, the physical and chemical properties of polypropylene (the most common plastic material in a mask), which show a high adsorption capacity for heavy metals and organic pollutants and play a role as a support for microbial growth, were extensively reported. In addition, several important issues that need to be resolved are raised, which offers a direction for future research. This review focuses on the essentiality of handling masks to avoid potential environmental issues.
Collapse
|
4
|
Design of 3D-Printed Electronic Fiber Optic Sensor to Detect Rhodamine B Reagent: An Initiation to Potential Virus Detection. Biomimetics (Basel) 2022; 7:biomimetics7030094. [PMID: 35892364 PMCID: PMC9326570 DOI: 10.3390/biomimetics7030094] [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: 06/17/2022] [Revised: 07/05/2022] [Accepted: 07/07/2022] [Indexed: 01/27/2023] Open
Abstract
A fluorescence device based on ultraviolet light is proposed in this paper, which currently stands at the design stage with the eventual aim to potentially detect virus/antibody fluorescence reactions. The designed device is proposed to have the characteristics of high reflectivity, low power consumption, wide spectrum of light source, and proper silver coating. For fabrication and raising product quality, 3D printing technology and a sputtering test will be used. In this connection, this paper firstly introduces the design sources; then, the ideas of inventing fluorescence detection devices based on ultraviolet light, followed by the data analysis as well as discussing the results of computer simulations. The design process, materials, methods, and experiments are demonstrated following the reality work procedure. Instead of directly using a virus or antibodies for the experiment, at the current design stage, we focus on using this device to detect the rhodamine B reagent. Experiment shows that this reagent can be successfully detected. With this achievement, we logically believe that such type of an ultraviolet optical sensor, with further development and testing, may have the possible value to detect a single virus such as COVID-19, as well as other viruses or small molecules. Though there is long way to go to achieve such a goal, future works experimenting with the detection device on real virus or antibodies can take place more efficiently with a good foundation.
Collapse
|
5
|
Hu Z, Yu R, Sun J, Duan Y, Zhou H, Zhou W, Li G. Static decolorization of polysaccharides from the leaves of Rhododendron dauricum: Process optimization, characterization and antioxidant activities. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.06.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
|
6
|
Zhen Y, Zhang T, Jiang B, Chen J. Purification and Characterization of Resistant Dextrin. Foods 2021; 10:185. [PMID: 33477619 PMCID: PMC7831330 DOI: 10.3390/foods10010185] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 01/05/2021] [Accepted: 01/13/2021] [Indexed: 12/29/2022] Open
Abstract
In this study, an efficient method for the purification of resistant dextrin (RD) using membrane filtration and anion exchange resin decolorization was developed, then the purified RD was characterized. In the membrane filtration stage, suspended solids in RD were completely removed, and the resulting product had a negligible turbidity of 2.70 ± 0.18 NTU. Furthermore, approximately half of the pigments were removed. Static decolorization experiments revealed that the D285 anion exchange resin exhibited the best decolorization ratio (D%), 84.5 ± 2.03%, and recovery ratio (R%), 82.8 ± 1.41%, among all the tested resins. Under optimal dynamic decolorization conditions, the D% and R% of RD were 86.26 ± 0.63% and 85.23 ± 0.42%, respectively. The decolorization efficiency of the D285 resin was superior to those of activated carbon and H2O2. Moreover, the chemical characteristics and molecular weight of RD did not change significantly after purification. The nuclear magnetic resonance spectroscopy of RD showed the formation of new glycosidic linkages that are resistant to digestive enzymes. The superior water solubility (99.14%), thermal stability (up to 200 °C), and rheological properties of RD make it possible to be widely used in food industry.
Collapse
Affiliation(s)
- Yuanhang Zhen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (Y.Z.); (T.Z.); (J.C.)
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
| | - Tao Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (Y.Z.); (T.Z.); (J.C.)
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
| | - Bo Jiang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (Y.Z.); (T.Z.); (J.C.)
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
| | - Jingjing Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (Y.Z.); (T.Z.); (J.C.)
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
| |
Collapse
|
7
|
Synthesis of surface molecularly imprinted poly-o-phenylenediamine/TiO2/carbon nanodots with a highly enhanced selective photocatalytic degradation of pendimethalin herbicide under visible light. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104580] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
8
|
Adsorption of Chelerythrine from Toddalia asiatica (L.) Lam. by ZSM-5. ADVANCES IN POLYMER TECHNOLOGY 2020. [DOI: 10.1155/2020/9408921] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Separation and purification of active components from biomass by inorganic materials during the pretreatment process of hydrothermal conversion are studied in this work. The batch experiment results show that an initial solution pH of 6 favors chelerythrine adsorption, and the optimum adsorbent dosage is 2.0 g. The adsorption mechanism of ZSM-5 for chelerythrine is investigated by adsorption kinetics, isotherm adsorption models, and thermodynamics analysis. The results show that the kinetics data fit the pseudo-second-order model well (R2 = 0.9991), and the intraparticle diffusion model has 3 diffusion stages, preliminarily indicating that chemisorption plays a major role in the adsorption process, and the sorption mechanism includes intraparticle, external, and boundary diffusion. The adsorption isotherms agree well with the Langmuir model, indicating the occurrence of monolayer molecular adsorption during the adsorption process. Meanwhile, the maximum adsorption capacity is 2.327, 2.072, and 1.877 mg/g at different temperatures (288 K, 298 K, and 308 K), respectively. The thermodynamic data demonstrate that the adsorption process is exothermic and spontaneous in nature. These observed results clearly confirm that ZSM-5 has potential superior properties for the enrichment and purification of alkaloids during the pretreatment of biomass.
Collapse
|
9
|
Wu Y, Li C, Fan F, Liang J, Yang Z, Wei X, Chen S. PVAm Nanofibers Fabricated by Rotary Jet Wet Spinning and Applied to Bisphenol A Recognition. ACS OMEGA 2019; 4:21361-21369. [PMID: 31867531 PMCID: PMC6921610 DOI: 10.1021/acsomega.9b02964] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 11/20/2019] [Indexed: 06/10/2023]
Abstract
Poly(vinylamine) (PVAm) is an important polymer with the highest content of primary amine groups of any polymer. PVAm has a great potential in selective separation and smart materials. It is difficult to fabricate pure PVAm nanofibers by electrospinning and rotary jet spinning (RJS) without additional polymers. In this work, rotary jet wet spinning (RJWS) was applied to fabricate molecular imprinting nanofibers (MINFs) with polyelectrolyte for the first time. Initially, optimal parameters of spinning are investigated, including coagulation bath, solution viscosity, and rotation speed. The PVAm aqueous solution is sensitive to alcohol. To demonstrate RJWS application, PVAm-based MINFs for bisphenol A (one endocrine disruptor) recognition are prepared by adding dummy template, cross-linking, and template elution. The association constant (8.6 mg/L), equilibrium time (30 min), and binding sites utilization rate (80%) of MINFs are evaluated. Its adsorption amount and selectivity are little lower than those of MIPs prepared by bulk polymerization; however, its adsorption speed is faster than that of MIPs.
Collapse
Affiliation(s)
- Yingzhu Wu
- School
of Textile Materials and Engineering and School of Biotechnology and Health
Sciences, Wuyi University, Jiangmen 529020, P. R. China
- PCFM
Lab, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Chen Li
- School
of Textile Materials and Engineering and School of Biotechnology and Health
Sciences, Wuyi University, Jiangmen 529020, P. R. China
| | - Fei Fan
- School
of Textile Materials and Engineering and School of Biotechnology and Health
Sciences, Wuyi University, Jiangmen 529020, P. R. China
| | - Jiahao Liang
- School
of Textile Materials and Engineering and School of Biotechnology and Health
Sciences, Wuyi University, Jiangmen 529020, P. R. China
| | - Zihang Yang
- School
of Textile Materials and Engineering and School of Biotechnology and Health
Sciences, Wuyi University, Jiangmen 529020, P. R. China
| | - Xiaoqun Wei
- Guangdong
Provincial Key Laboratory of Food Quality and Safety, College of Food
Science, South China Agricultural University, Guangzhou 510642, P. R. China
| | - Shuixia Chen
- PCFM
Lab, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| |
Collapse
|
10
|
He X, Lian Z, Wang J. Selective separation and purification of β-estradiol from marine sediment using an optimized core-shell molecularly imprinted polymer. J Sep Sci 2018; 41:3848-3854. [PMID: 30152918 DOI: 10.1002/jssc.201800722] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 08/03/2018] [Accepted: 08/07/2018] [Indexed: 11/07/2022]
Abstract
The core-shell molecularly imprinted polymers were optimized to provide reliable connections that allow molecularly imprinted polymers to be fixed on SiO2 surface for the efficient separation and purification of β-estradiol from marine sediment for the first time. To achieve the goal, different preparation methods were used and finally the polymer using 3-methacryloxypropyltrimethoxysilane as coupling agent exhibited the best result, which further confirmed that 3-methacryloxypropyltrimethoxysilane played an indispensable role on improving the inter-particle connections. An offline molecularly imprinted solid-phase extraction with high-performance liquid chromatography method was successfully applied to the isolation and enrichment of β-estradiol from marine sediment samples with high adsorption capacity, excellent clean-up efficiency, and great enrichment effect as well as high recovery (>90%) and accuracy (RSD < 8.5%, n = 3). It proved the successful grafting of molecularly imprinted polymers on SiO2 surface and the applicability of the offline molecularly imprinted solid-phase extraction method in the selective extraction and enrichment of β-estradiol from marine sediment.
Collapse
Affiliation(s)
- Xiuping He
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, P. R. China.,Research Center for Marine Ecology, The First Institute of Oceanography, State Oceanic Administration, Qingdao, P. R. China.,Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, P. R. China
| | - Ziru Lian
- Marine College, Shandong University, Weihai, P. R. China
| | - Jiangtao Wang
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, P. R. China
| |
Collapse
|
11
|
Tunable synthesis of the polar modified hyper-cross-linked resins and application to the adsorption. J Colloid Interface Sci 2017. [DOI: 10.1016/j.jcis.2017.06.030] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
12
|
Zhang T, Huang J. N -vinylimidazole modified hyper-cross-linked resins and their adsorption toward Rhodamine B: Effect of the cross-linking degree. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2017.07.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
13
|
An efficient method for decoloration of polysaccharides from the sprouts of Toona sinensis (A. Juss.) Roem by anion exchange macroporous resins. Food Chem 2017; 217:461-468. [DOI: 10.1016/j.foodchem.2016.08.079] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 03/09/2016] [Accepted: 08/23/2016] [Indexed: 11/20/2022]
|
14
|
Core–shell thermal-responsive and magnetic molecularly imprinted polymers based on mag-yeast for selective adsorption and controlled release of tetracycline. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2016. [DOI: 10.1007/s13738-016-0971-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
15
|
|
16
|
Jiang X, Huang J. Adsorption of Rhodamine B on two novel polar-modified post-cross-linked resins: Equilibrium and kinetics. J Colloid Interface Sci 2016; 467:230-238. [DOI: 10.1016/j.jcis.2016.01.031] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 01/11/2016] [Accepted: 01/14/2016] [Indexed: 11/26/2022]
|
17
|
Yu P, Sun Q, Li J, Tan Z, Yan Y, Li C. Magnetic imprinted nanomicrosphere attached to the surface of bacillus using miniemulsion polymerization for selective recognition of 2,4,6-trichlorophenol from aqueous solutions. J IND ENG CHEM 2015. [DOI: 10.1016/j.jiec.2015.04.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
18
|
Wang M, Fu J, Zhang Y, Chen Z, Wang M, Zhu J, Cui W, Zhang J, Xu Q. Removal of Rhodamine B, a Cationic Dye From Aqueous Solution Using Poly(cyclotriphosphazene-co-4,4′-sulfonyldiphenol) Nanotubes. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2015. [DOI: 10.1080/10601325.2015.980745] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
19
|
de Escobar CC, Fisch A, dos Santos JHZ. Effect of a Sol–Gel Route on the Preparation of Silica-Based Sorbent Materials Synthesized by Molecular Imprinting for the Adsorption of Dyes. Ind Eng Chem Res 2015. [DOI: 10.1021/ie503993d] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Cícero Coelho de Escobar
- Departamento
de Engenharia Química, Universidade Federal do Rio Grande do Sul Rua Eng. Luis Englert s/n, Porto Alegre, CEP 90040-040, Brazil
| | - Adriano Fisch
- Departamento
de Engenharia Química, Universidade Luterana do Brasil Avenida
Farroupilha, 8001, Canoas, CEP 96501-595, Brazil
| | - João Henrique Zimnoch dos Santos
- Instituto
de Química, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 9500, Porto
Alegre, CEP 91500-000, Brazil
| |
Collapse
|
20
|
Gao Y, Hu Z, Liu Y, Liu Z, Chen R, Meng X, Meng M, Zhou C. A Facile Synthesis of Ion Imprinted Mesoporous Silica Adsorbents by a Co-Condensation Pathway and Application in a Fixed-Bed Column Study for Lead Removal. Aust J Chem 2015. [DOI: 10.1071/ch14461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Highly selective lead ion imprinted mesoporous silica adsorbents (PbII-IMS) were prepared through a co-condensation pathway with 3-(γ-aminoethylamino)propyltrimethoxysilane (AAPTS) (PbII-IMS-NN) and 3-aminepropyltriethoxysilyl (APTES) (PbII-IMS-N) as monomers. The prepared adsorbents were characterised by FT-IR spectroscopy, X-ray photoelectron spectroscopy, power X-ray diffraction, transmission electron microscopy, scanning electron microscopy, thermogravimetric analysis, and nitrogen adsorption–desorption techniques. The results showed that the synthesised adsorbents presented a highly ordered mesoporous structure. In comparison with PbII-IMS-N, PbII-IMS-NN demonstrated a higher adsorption capacity in a series of static and dynamic adsorption experiments, and was further applied to a continuous fixed-bed column study under different conditions. It was found that the breakthrough time of the fixed-bed increased with an increase in bed depth, but decreased with increased flow rate and initial PbII concentration, and the dynamic adsorption data was more consistent with the Thomas model than the Adams–Bohart model. Furthermore, the PbII-IMS-NN showed a greater recognition and binding affinity towards the target lead ions than PbII-IMS-N.
Collapse
|
21
|
Ma W, Dai J, Dai X, Da Z, Yan Y. Core–shell molecularly imprinted polymers based on magnetic chitosan microspheres for chloramphenicol selective adsorption. MONATSHEFTE FUR CHEMIE 2014. [DOI: 10.1007/s00706-014-1351-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
|
22
|
Guo H, Lin F, Chen J, Li F, Weng W. Metal-organic framework MIL-125(Ti) for efficient adsorptive removal of Rhodamine B from aqueous solution. Appl Organomet Chem 2014. [DOI: 10.1002/aoc.3237] [Citation(s) in RCA: 96] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hongxu Guo
- College of Chemistry and Environmental; Minnan Normal University; Zhangzhou 363000 PR China
| | - Fan Lin
- College of Chemistry and Environmental; Minnan Normal University; Zhangzhou 363000 PR China
| | - Jianhua Chen
- College of Chemistry and Environmental; Minnan Normal University; Zhangzhou 363000 PR China
| | - Feiming Li
- College of Chemistry and Environmental; Minnan Normal University; Zhangzhou 363000 PR China
| | - Wen Weng
- College of Chemistry and Environmental; Minnan Normal University; Zhangzhou 363000 PR China
| |
Collapse
|
23
|
Bao L, Meng M, Sun K, Li W, Zhao D, Li H, He M. Selective adsorption and degradation of rhodamine B with modified titanium dioxide photocatalyst. J Appl Polym Sci 2014. [DOI: 10.1002/app.40890] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Lanlan Bao
- School of Chemistry and Chemical Engineering; Jiangsu University; Zhenjiang Jiangsu 212013 China
| | - Minjia Meng
- School of Chemistry and Chemical Engineering; Jiangsu University; Zhenjiang Jiangsu 212013 China
| | - Kaiyong Sun
- School of Chemistry and Chemical Engineering; Jiangsu University; Zhenjiang Jiangsu 212013 China
| | - Weibing Li
- School of Chemistry and Chemical Engineering; Jiangsu University; Zhenjiang Jiangsu 212013 China
| | - Dexiang Zhao
- School of Chemistry and Chemical Engineering; Jiangsu University; Zhenjiang Jiangsu 212013 China
| | - Huaming Li
- School of Chemistry and Chemical Engineering; Jiangsu University; Zhenjiang Jiangsu 212013 China
| | - Minqiang He
- School of Chemistry and Chemical Engineering; Jiangsu University; Zhenjiang Jiangsu 212013 China
| |
Collapse
|
24
|
Monier M, Akl M, Ali WM. Modification and characterization of cellulose cotton fibers for fast extraction of some precious metal ions. Int J Biol Macromol 2014; 66:125-34. [DOI: 10.1016/j.ijbiomac.2014.01.068] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 01/19/2014] [Accepted: 01/28/2014] [Indexed: 11/17/2022]
|
25
|
de Coelho Escobar C, dos Santos JHZ. Effect of the sol-gel route on the textural characteristics of silica imprinted with Rhodamine B. J Sep Sci 2014; 37:868-75. [PMID: 24478149 DOI: 10.1002/jssc.201301143] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Revised: 01/16/2014] [Accepted: 01/18/2014] [Indexed: 02/06/2023]
Abstract
A series of silica xerogels that support Rhodamine B as a template were synthesized using distinct sol-gel routes, namely, acid-catalyzed routes, a base-catalyzed route, acid-catalyzed with base-catalyzed (two steps) hydrolytic routes, and a FeCl3 -catalyzed nonhydrolytic route. The extraction methods (thermal, Soxhlet, water washing, and ultrasound) were also evaluated. The resulting xerogels were characterized through porosimetry using nitrogen adsorption/desorption. The samples were further analyzed through small-angle X-ray scattering, Fourier transform infrared spectroscopy, and SEM. The preparation route affected the materials' textural properties. Extraction was optimized using acid and two-step routes. The acid route from Rhodamine B to Rhodamine 6G generated the highest selectivity factor (2.5). The nonhydrolytic route produced the best imprinting factor. Competitive adsorption was also used, from which the approximate imprinting factor was 2. The cavity shape generated during the production of the imprinted silica dictates the adsorption behavior, not the magnitude of the surface area.
Collapse
Affiliation(s)
- Cícero de Coelho Escobar
- Departamento de Engenharia Química-Universidade Federal do Rio Grande do Sul Rua Eng. Luis Englert s/n, Porto Alegre -RS, Brazil
| | | |
Collapse
|
26
|
Hierarchically imprinted mesoporous silica polymer: An efficient solid-phase extractant for bisphenol A. Talanta 2014; 120:255-61. [DOI: 10.1016/j.talanta.2013.12.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Revised: 11/28/2013] [Accepted: 12/02/2013] [Indexed: 11/17/2022]
|
27
|
Hong Y, Chen L. Extraction of quercetin from Herba Lysimachiae by molecularly imprinted-matrix solid phase dispersion. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 941:38-44. [DOI: 10.1016/j.jchromb.2013.10.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 09/30/2013] [Accepted: 10/01/2013] [Indexed: 10/26/2022]
|
28
|
Monier M, Abdel-Latif D. Synthesis and characterization of ion-imprinted resin based on carboxymethyl cellulose for selective removal of UO22+. Carbohydr Polym 2013; 97:743-52. [DOI: 10.1016/j.carbpol.2013.05.062] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 05/16/2013] [Accepted: 05/24/2013] [Indexed: 10/26/2022]
|