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Hou T, Huang Y, Wang X, Hu X, Guan P. Preparation of lysozyme-imprinted mesoporous Zr-based metal-organic frameworks with remarkable specific recognition. Talanta 2023; 265:124896. [PMID: 37442000 DOI: 10.1016/j.talanta.2023.124896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 06/20/2023] [Accepted: 07/01/2023] [Indexed: 07/15/2023]
Abstract
The development of high-performance protein-imprinted materials remains challenging due to defects concerning high mass transfer resistance and non-specific binding, which are crucial for protein purification and enrichment. In this paper, lysozyme-imprinted mesoporous Zr-based MOF (mesoUiO-66-NH2@MIPs) with specific and selective recognition of lysozyme (Lyz) were prepared by surface imprinting technology. In particular, the excellent hydrophilicity mesoporous MOFs (mesoUiO-66-NH2) with a pore size of 10 nm was prepared as a carrier for Lyz immobilization by an auxiliary modulation strategy to regulate the microporous structure of UiO-66-NH2 with the propionic acid solution, enabling massive loading of the macromolecular protein Lyz. The mesoUiO-66-NH2@MIPs reached a maximum saturation adsorption of 206.54 mg g-1 on Lyz in 20 min at 25 °C with an imprinting factor of 2.57 and selection factors of 2.02, 2.34, and 2.45 for cytochrome c (Cyt c), bovine serum albumin (BSA) and bovine hemoglobin (BHb), respectively. More importantly, the mesoUiO-66-NH2@MIPs could specifically recognize Lyz from the mixed protein system. The adsorption capacity of Lyz could still reach 78.55% after 5 cycles with good cyclic regeneration performance. This provides a new research option for developing and applying novel porous MOF in biomolecule imprinting technology and the specific separation of biomolecules.
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Affiliation(s)
- Tongtong Hou
- Department of Chemistry, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, PR China
| | - Yue Huang
- Department of Chemistry, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, PR China
| | - Xin Wang
- Department of Chemistry, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, PR China
| | - Xiaoling Hu
- Department of Chemistry, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, PR China.
| | - Ping Guan
- Department of Chemistry, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, PR China.
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2
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Wang Y, Wu X, Shao G, Wang T, Wang Z, Qin B, Zhao J, Liu Z, Fu Y. A cellulose-based intelligent temperature-sensitive molecularly imprinted aerogel reactor for specific recognition and enrichment of ursolic acid. J Chromatogr A 2023; 1706:464225. [PMID: 37541056 DOI: 10.1016/j.chroma.2023.464225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 07/17/2023] [Accepted: 07/18/2023] [Indexed: 08/06/2023]
Abstract
In this article, thermosensitive molecularly imprinted polymer and composite aerogel were combined for the first time to create an intelligent temperature-responsive aerogel reactor to effectively enrich ursolic acid (UA). Because aerogel carrier had a higher specific surface area and higher porosity compared to other carriers, the ursolic acid molecularly imprinted intelligent temperature responsive aerogel reactor (ITR&AR(G570)&UA-MIP) demonstrated a higher adsorption capacity for UA. More notably, ITR&AR(G570)&UA-MIP have the extraordinary capacity to spontaneously adsorb-desorb target molecule UA by regulating the reaction temperature. The ratio of the target molecule UA to the functional monomer and crosslinker in the grafting process and external influences had a major impact on how ITR&AR(G570)&UA-MIP were prepared overall. When the molar ratio of UA to 4-VP was 1:8, the weight ratio between ITR&AR(G570)&UA-MIP and EGDMA/DVB was 1:2:10, the reaction temperature was 60 °C, and the ambient pH = 6, the material showed the best adsorption capacity, reaching a peak of about 70 mg g-1. After researching the appropriate synthesis conditions, ITR&AR(G570)&UA-MIP were applied to lingonberry (Vaccinium Vitis-Idaea L.) berry extracts in this work. The outcomes show that this technique provides a new, intelligent, temperature-controlled adsorption material for the solid-phase extraction of triterpenoid acids in natural products, with good specific adsorption performance for the target molecule UA.
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Affiliation(s)
- Ying Wang
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China; Engineering Research Center of Forest Bio-preparation, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China; The College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, PR China
| | - Xiaodan Wu
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China; Engineering Research Center of Forest Bio-preparation, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China; The College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, PR China
| | - Guansong Shao
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China; Engineering Research Center of Forest Bio-preparation, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China; The College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, PR China
| | - Tao Wang
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China; Engineering Research Center of Forest Bio-preparation, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China; The College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, PR China
| | - Zihan Wang
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China; Engineering Research Center of Forest Bio-preparation, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China; The College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, PR China
| | - Bingyang Qin
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China; Engineering Research Center of Forest Bio-preparation, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China; The College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, PR China
| | - Jingru Zhao
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China; Engineering Research Center of Forest Bio-preparation, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China; The College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, PR China
| | - Zhiguo Liu
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China; Engineering Research Center of Forest Bio-preparation, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China; The College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, PR China
| | - Yujie Fu
- The College of Forestry, Beijing Forestry University, Beijing 100083, PR China.
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Chen X, Sun Y, Wang W, Chen Z, Ming Z. Selective determination of cuprous ion in copper dissolving solution based on bathocuproine-modified expanded graphite electrode. ANAL SCI 2023; 39:1465-1473. [PMID: 37280484 DOI: 10.1007/s44211-023-00358-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 05/01/2023] [Indexed: 06/08/2023]
Abstract
The presence of cuprous ions in the copper-dissolving solution significantly affects the microstructure of copper plated surface. Fewer quantitative analyses of cuprous ions in the copper foil productive process had rarely been involved so far. In the present work, a novel electrochemical sensor of the bathocuproine (BCP) modified expanded graphite (EG) electrode was developed for the selective determination of cuprous ions. EG has a large surface area, good adsorption, and excellent electrochemical performance which remarkably promoted analytical sensitivity. Meanwhile, the selective determination of the BCP-EG electrode for cuprous ions in the coexistence of ten thousand times of copper ions have been achieved on the benefit of the special coordination of BCP to cuprous ions. In the coexistence of 50 g/L copper ions, the analytical performance of the BCP-EG electrode for the determination of cuprous ions had been examined. The results represented a wide detection range of cuprous ions in the range of 1.0 μg/L-5.0 mg/L, with a low detection limit of 0.18 μg/L (S/N = 3) and the BCP-EG electrode has great selectivity to cuprous ions in presence of various interferences. The analytical selectively for cuprous ions supported by the proposed electrode would be a potential analytical tool for quality improvement in electrolytic copper foil manufacturing.
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Affiliation(s)
- Xiaohui Chen
- School of Chemistry and Material Engineering, Changzhou Institute of Technology, Changzhou, 213032, People's Republic of China
| | - Yufa Sun
- School of Petrochemical and Engineering, Changzhou University, Changzhou, 213164, People's Republic of China
| | - Wenchang Wang
- School of Petrochemical and Engineering, Changzhou University, Changzhou, 213164, People's Republic of China
| | - Zhidong Chen
- School of Petrochemical and Engineering, Changzhou University, Changzhou, 213164, People's Republic of China.
| | - Zhiyao Ming
- Jiangsu Mingfeng Electronic Material Technology Co., Ltd., Changzhou, 213341, People's Republic of China
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Yao M, Zhang G, Shao D, Ding S, Li L, Li H, Zhou C, Luo B, Lu L. Preparation of chitin/MXene/poly(L-arginine) composite aerogel spheres for specific adsorption of bilirubin. Int J Biol Macromol 2023:125140. [PMID: 37270125 DOI: 10.1016/j.ijbiomac.2023.125140] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 05/21/2023] [Accepted: 05/26/2023] [Indexed: 06/05/2023]
Abstract
Currently, hemoperfusion is clinically the most rapid and effective treatment for removing toxins from the blood. The core of hemoperfusion is the sorbent inside the hemoperfusion device. Due to the complex composition of the blood, adsorbents tend to adsorb substances such as proteins in the blood (non-specific adsorption) while adsorbing toxins. Hyperbilirubinemia is caused by excessive levels of bilirubin in the human blood, causing irreversible damage to the patient's brain and nervous system, and even leading to death. High adsorption and high biocompatibility adsorbents with specific bilirubin adsorption are urgently needed to treat hyperbilirubinemia. Herein, poly(L-arginine) (PLA) which can specifically adsorb bilirubin, was introduced into chitin/MXene (Ch/MX) composite aerogel spheres. Ch/MX/PLA prepared by supercritical CO2 technology had higher mechanical properties than Ch/MX and can withstand 50,000 times its own weight. The in vitro simulated hemoperfusion test showed that the adsorption capacity of Ch/MX/PLA was as high as 596.31 mg/g, which was 15.38 % higher than that of Ch/MX. Binary and ternary competitive adsorption tests showed that Ch/MX/PLA also had good adsorption capacity in the presence of a variety of interfering molecules. In addition, hemolysis rate testing and CCK-8 testing confirmed that Ch/MX/PLA had better biocompatibility and hemocompatibility. Ch/MX/PLA can meet the required properties of clinical hemoperfusion sorbents and has the ability to produce mass production. It has good application potential in the clinical treatment of hyperbilirubinemia.
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Affiliation(s)
- Mengru Yao
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China
| | - Guiyin Zhang
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China
| | - Danchun Shao
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China
| | - Shan Ding
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China; Engineering Research Center of Artificial Organs and Materials, Ministry of Education, Guangzhou 510632, China
| | - Lihua Li
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China; Engineering Research Center of Artificial Organs and Materials, Ministry of Education, Guangzhou 510632, China
| | - Hong Li
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China; Engineering Research Center of Artificial Organs and Materials, Ministry of Education, Guangzhou 510632, China
| | - Changren Zhou
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China; Engineering Research Center of Artificial Organs and Materials, Ministry of Education, Guangzhou 510632, China
| | - Binghong Luo
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China; Engineering Research Center of Artificial Organs and Materials, Ministry of Education, Guangzhou 510632, China
| | - Lu Lu
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China; Engineering Research Center of Artificial Organs and Materials, Ministry of Education, Guangzhou 510632, China.
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Li Y, Zhang J, Zhang C, Dang W, Xue L, Liu H, Cheng H, Yan X. Facile and selective separation of anthraquinones by alizarin-modified iron oxide magnetic nanoparticles. J Chromatogr A 2023; 1702:464088. [PMID: 37230053 DOI: 10.1016/j.chroma.2023.464088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 05/17/2023] [Accepted: 05/18/2023] [Indexed: 05/27/2023]
Abstract
Anthraquinones are widely distributed in higher plants and possess broad biological activities. The conventional separation procedures for isolating anthraquinones from the plant crude extracts require multiple extraction, concentration, and column chromatography steps. In this study, we synthesized three alizarin (AZ)-modified Fe3O4 nanoparticles (Fe3O4@AZ, Fe3O4@SiO2-AZ, and Fe3O4@SiO2-PEI-AZ) by thermal solubilization method. Fe3O4@SiO2-PEI-AZ showed strong magnetic responsiveness, high methanol/water dispersion, good recyclability, and high loading capacity for anthraquinones. To evaluate the feasibility of using Fe3O4@SiO2-PEI-AZ for separating various aromatic compounds, we employed molecular dynamics simulations to predict the adsorption/desorption effects of PEI-AZ for various aromatic compounds in different methanol concentrations. The results showed that the anthraquinones could be efficiently separated from the monocyclic and bicyclic aromatic compounds by adjusting the methanol/water ratio. The Fe3O4@SiO2-PEI-AZ nanoparticles were then used to separate the anthraquinones from the rhubarb extract. At 5% methanol, all the anthraquinones were adsorbed by the nanoparticles, thus allowing their separation from other components in the crude extract. Compared with the conventional separation methods, this adsorption method has the advantages of high adsorption specificity, simple operation, and solvent saving. This method sheds light on the future application of functionalized Fe3O4 magnetic nanoparticles to selectively separate desired components from complex plant and microbial crude extracts.
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Affiliation(s)
- Yuexuan Li
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Jiaxing Zhang
- Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Chengyu Zhang
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Weifan Dang
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Lu Xue
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Hongliang Liu
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Huiying Cheng
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Xiaohui Yan
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China.
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Zhang P, Gu X, Qin N, Hu Y, Wang X, Zhang YN. Enhanced photoelectrocatalytic performance for degradation of dimethyl phthalate over well-designed 3D hierarchical TiO 2/Ti photoelectrode coupled dual heterojunctions. J Hazard Mater 2023; 441:129896. [PMID: 36096059 DOI: 10.1016/j.jhazmat.2022.129896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 08/16/2022] [Accepted: 08/31/2022] [Indexed: 06/15/2023]
Abstract
A novel A/R-TiO2 NSs/NRs photoelectrode was constructed through electrodeposition of anatase TiO2 nanosheets (A-TiO2 NSs) with highly exposed {001} facet onto the 1D upright rutile TiO2 nanorods (R-TiO2 NRs). At first, A/R-TiO2 NSs/NRs exhibited enhanced adsorption of dimethyl phthalate (DMP) due to the specific recognition between Lewis acid sites of {001} facet and Lewis basic DMP. NH3-TPD and Py-IR revealed that the Lewis acidity on the {001} facet of A-TiO2 NSs was much stronger than that of R-TiO2 NRs, demonstrating superior adsorption capacity to DMP. DFT theoretical calculations coupled with in-situ ATR-FTIR spectra were performed to investigate the binding adsorption behavior of DMP on A/R-TiO2 NSs/NRs. Secondly, the rapid separation of excited charges and strong oxidation of h+ were achieved by the synergistic effect of dual heterojunctions (A/R "phase heterojunction" and {111}/{110} "facet heterojunction"). The A/R-TiO2 NSs/NRs exhibited 100% degradation efficiency for the target pollutant DMP within 3 h, whose rate constant (k) was 18.02 × 10-3 min-1, 2.16 times that of pure R-TiO2 NRs. In real wastewater application, A/R-TiO2 NSs/NRs achieved 93.8% elimination of DMP during 4 h and preserved excellent stability after 5 cycles, promising a wide-range of applications in water environment remediation.
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Affiliation(s)
- Pan Zhang
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Key Laboratory of Yangtze River Water Environment, Tongji University, Shanghai 200092, PR China
| | - Xiaotong Gu
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Key Laboratory of Yangtze River Water Environment, Tongji University, Shanghai 200092, PR China
| | - Ning Qin
- Department of Mechanical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, PR China; Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China
| | - Yiqiong Hu
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Key Laboratory of Yangtze River Water Environment, Tongji University, Shanghai 200092, PR China
| | - Xuejiang Wang
- College of Environmental Science and Engineering, Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai 200092, PR China
| | - Ya-Nan Zhang
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Key Laboratory of Yangtze River Water Environment, Tongji University, Shanghai 200092, PR China.
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Hao Y, Gao Y, Song H, Niu Y, Chen X, Liu X, Gao R, Wang S. Fabrication of metal coordination-synergistic magnetic imprinted microspheres based on ligand-free Fe 3O 4-Cu for specific recognition of bovine hemoglobin. Talanta 2021; 233:122496. [PMID: 34215114 DOI: 10.1016/j.talanta.2021.122496] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 04/20/2021] [Accepted: 04/30/2021] [Indexed: 11/17/2022]
Abstract
In this work, a synergistic imprinting strategy combined with metal coordination based on ligand-free Fe3O4-Cu was proposed to fabricate molecularly imprinted polymers (MIPs) for the recognition and isolation of bovine hemoglobin (BHb) specifically in biological samples. Copper doped magnetic microspheres prepared solvothermally in a one-pot pathway act as both magnetic core and metal affinity substrate. Upon anchoring BHb to Fe3O4-Cu through metal coordination, the imprinted layer was formed via dopamine self-polymerization. Profiting from the synergistic effect, the obtained imprinted microspheres exhibited an enhanced adsorption performance with the adsorption capacity of 400.86 mg g-1, imprinting factor of 11.88, selectivity coefficient above 5.8, superior to most of other reported BHb-MIPs. Furthermore, kinetic adsorption analyses pointed to a chemisorption-limited process as described by the pseudo-second-order model, and the isothermal adsorption analyses implied monolayer adsorption, as described by the Langmuir model. In addition, the resultant magnetic MIPs can be used at least six adsorption-desorption cycles without re-incubation in the metallic salt solution, avoiding secondary environmental pollution. Furthermore, the well-defined materials showed selectivity both in individual protein samples and bovine serum, providing a promising potential in bioseparation.
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Affiliation(s)
- Yi Hao
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
| | - Yuan Gao
- School of Chemistry, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Huijia Song
- School of Chemistry, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Yingying Niu
- School of Chemistry, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Xiaoyi Chen
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
| | - Xueyi Liu
- School of Chemistry, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Ruixia Gao
- School of Chemistry, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China.
| | - Sicen Wang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China.
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Gu X, Qin N, Wei G, Hu Y, Zhang YN, Zhao G. Efficient photocatalytic removal of phthalates easily implemented over a bi-functional {001}TiO 2 surface. Chemosphere 2021; 263:128257. [PMID: 33297202 DOI: 10.1016/j.chemosphere.2020.128257] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/20/2020] [Accepted: 09/01/2020] [Indexed: 06/12/2023]
Abstract
It is stubborn to remove the lowly concentrated phthalic acid esters (PAEs) that usually coexist with other highly concentrated but low-toxic pollutants in municipal sewage. Herein, we report a novel strategy for completely removing the PAEs over a bi-functional {001}TiO2 surface (with highly exposed {001} facet), which not only serve as functional sites to specifically adsorb the target PAEs pollutants, but also contribute to an enhanced oxidation ability. The adsorption behavior of PAEs on {001}TiO2 is analyzed deeply through kinetic experiments combining with in situ ATR-FTIR spectroscopy and theoretical calculations. The results reveal that the adsorption capacities of PAEs on {001}TiO2 are about 4-5 times higher than that on TiO2, both of which follow the pseudo-second-order and Langmuir model. This is mainly attributed to the interfacial Lewis Acid-Base Pair between {001} facet Ti5c sites and CO of PAEs. Benefitting from the specific adsorption capability toward target pollutant and enhanced oxidation ability of {001} facets, nearly 100% of DMP or DEP in simulated wastewater can be eliminated by {001}TiO2 within 2 h illumination, and the relevant degradation rate constants (k) (3.67 h-1 for DMP and 2.19 h-1 for DEP) are 5.73 and 3.08 folds higher than that of pure TiO2, respectively. In the application of municipal wastewater, nearly 76% of DMP and 85% DEP can be eliminated by {001}TiO2 within 2 h illumination, which are nearly 3-6 fold higher than that of pure TiO2.
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Affiliation(s)
- Xiaotong Gu
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Key Laboratory of Yangtze River Water Environment, Tongji University, Shanghai, 200092, People's Republic of China
| | - Ning Qin
- Department of Mechanical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China; Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, People's Republic of China
| | - Guangfeng Wei
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Key Laboratory of Yangtze River Water Environment, Tongji University, Shanghai, 200092, People's Republic of China
| | - Yiqiong Hu
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Key Laboratory of Yangtze River Water Environment, Tongji University, Shanghai, 200092, People's Republic of China
| | - Ya-Nan Zhang
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Key Laboratory of Yangtze River Water Environment, Tongji University, Shanghai, 200092, People's Republic of China.
| | - Guohua Zhao
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Key Laboratory of Yangtze River Water Environment, Tongji University, Shanghai, 200092, People's Republic of China.
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Lee SR, Park Y, Park JW. Kinetic and thermodynamic studies of cinnamycin specific-adsorption on PE-Included-Membranes using surface plasmon resonance. J Biotechnol 2020; 320:77-79. [PMID: 32593691 DOI: 10.1016/j.jbiotec.2020.06.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 06/23/2020] [Accepted: 06/24/2020] [Indexed: 01/16/2023]
Abstract
The binding of the cinnamycin on the biomimetic membrane was studied with respect to time using the surface plasmon resonance(SPR). The membrane was composed of the inner layer tethered on the gold surface and the outer layer formed on the inner layer, which was at the desired ratio of dioleoylphosphatidylethanolamine(DOPE) to dioleoylphosphatidyl- choline(DOPC). On the bilayer, the cinnamycin solution was injected and showed different behavior of the binding with respect to time up on its concentration. For kinetic analysis, the behavior was converted to the coverage fraction with respect to time, which was ratio to the saturated response of 5 μM cinnamycin solution. The fraction change with respect to time was function of the available-site, which was eventually the subtraction of the fraction from one. With the fitting of the first order of the available site, the rate constant was acquired into 6∼7 × 10-3 s-1. Furthermore, the reciprocals of the fraction and the concentration were fitted with the Langmuir adsorption isotherm. From the fitting, the equilibrium constant was between 1 × 107 and 5 × 107 M-1.
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Affiliation(s)
- Sang-Ryong Lee
- Department of Biological and Environmental Science, Dongguk University, Ilsandong-gu, Goyang-si, Gyeonggido 10326, Republic of Korea
| | - Yeseul Park
- Department of Chemical and Biomolecular Engineering, College of Energy and Biotechnology, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul, 01811, Republic of Korea
| | - Jin-Won Park
- Department of Chemical and Biomolecular Engineering, College of Energy and Biotechnology, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul, 01811, Republic of Korea.
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10
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Ragavan KV, Rastogi NK. β-Cyclodextrin capped graphene-magnetite nanocomposite for selective adsorption of Bisphenol-A. Carbohydr Polym 2017; 168:129-37. [PMID: 28457432 DOI: 10.1016/j.carbpol.2017.03.045] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Revised: 02/24/2017] [Accepted: 03/13/2017] [Indexed: 11/24/2022]
Abstract
Beta-cyclodextrin capped Graphene-magnetite (G-Fe3O4-BCD) nanocomposite was synthesized by ethylenediamine conjugation and used as an adsorbent for selective removal of Bisphenol-A (BPA) in water. Characterization of nanocomposite revealed BCD conjugated to Fe3O4 nanoparticles (30-40nm) embedded on graphene. Adsorption process followed Langmuir model and pseudo second order kinetics with an adsorption capacity of 59.6mg/g. It was found to be highly favourable physisorption and endothermic process as indicated by ΔG° (-3.36kJ/mol) and ΔH° (2.08kJ/mol) values at ambient temperatures. The nanocomposite was highly specific towards BPA compared to its analogs, largely driven by host-guest interaction between BCD and BPA. Nanocomposite had a high magnetization of 97emu/g with superparamagnetic property at room temperature which helps in faster separation using an external magnetic field. Nanocomposite can be regenerated with methanol and can be reused without much loss in adsorption efficiency (<10%) after 6 cycles. It has huge potential and application in selective adsorption of target molecules.
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Biswas B, Sarkar B, Mandal A, Naidu R. Specific adsorption of cadmium on surface-engineered biocompatible organoclay under metal-phenanthrene mixed-contamination. Water Res 2016; 104:119-127. [PMID: 27522022 DOI: 10.1016/j.watres.2016.08.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 07/04/2016] [Accepted: 08/04/2016] [Indexed: 06/06/2023]
Abstract
Bioremediation of polycyclic aromatic hydrocarbons (PAHs) is extremely challenging when they coexist with heavy metals. This constrain has led to adsorption-based techniques that help immobilize the metals and reduce toxicity. However, the adsorbents can also non-selectively bind the organic compounds, which reduces their bioavailability. In this study we developed a surface-engineered organoclay (Arquad® 2HT-75-bentonite-palmitic acid) which enhanced bacterial proliferation and adsorbed cadmium, but elevated phenanthrene bioavailability. Adsorption models of single and binary solutes revealed that the raw bentonite adsorbed cadmium and phenanthrene non-selectively at the same binding sites and sequestrated phenanthrene. In contrast, cadmium selectively bound to the deprotonated state of carboxyl groups in the organoclay and phenanthrene on the outer surface of the adsorbent led to a microbially congenial microenvironment with a higher phenanthrene bioavailability. This study provided valuable information which would be highly important for developing a novel clay-modulated bioremediation technology for cleaning up PAHs under mixed-contaminated situations.
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Affiliation(s)
- Bhabananda Biswas
- Future Industries Institute, University of South Australia, Mawson Lakes Campus, SA 5095, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, ACT Building, University of Newcastle, Callaghan, NSW 2308, Australia.
| | - Binoy Sarkar
- Future Industries Institute, University of South Australia, Mawson Lakes Campus, SA 5095, Australia; Department of Geological Sciences, Indiana University, Bloomington, IN 47405, USA.
| | - Asit Mandal
- Indian Council of Agricultural Research (ICAR), Indian Institute of Soil Science, Bhopal, India
| | - Ravi Naidu
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, ACT Building, University of Newcastle, Callaghan, NSW 2308, Australia; Global Centre for Environmental Remediation (GCER), Faculty of Science and Information Technology, University of Newcastle, Callaghan, NSW 2308, Australia.
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Kim RY, Yoon JK, Kim TS, Yang JE, Owens G, Kim KR. Bioavailability of heavy metals in soils: definitions and practical implementation--a critical review. Environ Geochem Health 2015; 37:1041-61. [PMID: 25841357 DOI: 10.1007/s10653-015-9695-y] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 03/27/2015] [Indexed: 05/25/2023]
Abstract
Worldwide regulatory frameworks for the assessment and remediation of contaminated soils have moved towards a risk-based approach, taking contaminant bioavailability into consideration. However, there is much debate on the precise definition of bioavailability and on the standardization of methods for the measurement of bioavailability so that it can be reliably applied as a tool for risk assessment. Therefore, in this paper, we reviewed the existing definitions of heavy metal bioavailability in relation to plant uptake (phytoavailability), in order to better understand both the conceptual and operational aspects of bioavailability. The related concepts of specific and non-specific adsorption, as well as complex formation and organic ligand affinity were also intensively discussed to explain the variations of heavy metal solubility and mobility in soils. Further, the most frequently used methods to measure bioavailable metal soil fractions based on both chemical extractions and mechanistic geochemical models were reviewed. For relatively highly mobile metals (Cd, Ni, and Zn), a neutral salt solution such as 0.01 M CaCl2 or 1 M NH4NO3 was recommended, whereas a strong acid or chelating solution such as 0.43 M HNO3 or 0.05 M DTPA was recommended for strongly soil-adsorbed and less mobile metals (Cu, Cr, and Pb). While methods which assessed the free metal ion activity in the pore water such as DGT and DMT or WHAM/Model VI, NICA-Donnan model, and TBLM are advantageous for providing a more direct measure of bioavailability, few of these models have to date been properly validated.
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Affiliation(s)
- Rog-Young Kim
- Soil and Groundwater Research Division, National Institute of Environmental Research, 42 Hwangyong-ro, Inchon, 404-708, Republic of Korea
| | - Jeong-Ki Yoon
- Soil and Groundwater Research Division, National Institute of Environmental Research, 42 Hwangyong-ro, Inchon, 404-708, Republic of Korea
| | - Tae-Seung Kim
- Soil and Groundwater Research Division, National Institute of Environmental Research, 42 Hwangyong-ro, Inchon, 404-708, Republic of Korea
| | - Jae E Yang
- Department of Biological Environment, Kangwon National University, 1 Kangwondaehak-gil, Chuncheon, 200-701, Republic of Korea
| | - Gary Owens
- Environmental Contaminants Group, Mawson Institute, University of South Australia, Mawson Lakes, SA, 5095, Australia
| | - Kwon-Rae Kim
- Department of Agronomy and Medicinal Plant Resources, Gyeongnam National University of Science and Technology, Jinju, 660-758, Republic of Korea.
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Popescu T, Lupu AR, Raditoiu V, Purcar V, Teodorescu VS. On the photocatalytic reduction of MTT tetrazolium salt on the surface of TiO2 nanoparticles: Formazan production kinetics and mechanism. J Colloid Interface Sci 2015; 457:108-20. [PMID: 26164242 DOI: 10.1016/j.jcis.2015.07.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Revised: 06/25/2015] [Accepted: 07/03/2015] [Indexed: 01/22/2023]
Abstract
HYPOTHESIS The MTT [3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium-bromide] cell cytotoxicity indicator is photocatalytically reduced on the surface of TiO2 nanoparticles in phosphate-buffered-saline (PBS) environment. We hypothesize that specific phosphate adsorption may be used to modulate the efficiency of the TiO2-MTT reaction through colloidal and semiconductor-liquid interface processes. EXPERIMENTS The TiO2-MTT reaction kinetics was studied in PBS, with respect to photocatalyst and MTT concentrations and irradiation wavelength. The effects of PBS and electron scavengers (Fe(3+) ions) on reaction efficiency and the role of colloidal surface charge in the photocatalytic process were investigated. The structural and spectroscopic characteristics of relevant TiO2-formazan systems were studied by X-ray diffraction, transmission electron microscopy and IR-spectroscopy. FINDINGS The reaction was pseudo-first order with respect to photocatalyst and showed a negative and fractional partial order with respect to MTT. Formazan production rates were directly proportional to radiation wavelength and TiO2 concentration and inversely proportional to the MTT initial concentration. The addition of Fe(3+) ions, as well as the absence of PBS, induced strong reaction inhibition. Reaction efficiency and catalyst Zeta potential were enhanced by Na2HPO4 (PBS component) and showed a maximum around the phosphate concentration 0.005 M. Structural/spectroscopic characterization confirmed the formation of amorphous MTT-formazan on the surface of TiO2 and the TiO2-phosphate binding.
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Affiliation(s)
- Traian Popescu
- National Institute of Materials Physics, P.O. Box MG-7, 077125 Bucharest, Romania; University of Bucharest, Faculty of Physics, 077125 Bucharest, Romania.
| | - Andreea R Lupu
- Cantacuzino National Institute for Research and Development in Microbiology and Immunology, 050096 Bucharest, Romania; Victor Babes National Institute of Pathology, 050096 Bucharest, Romania
| | - Valentin Raditoiu
- National Research and Development Institute for Chemistry and Petrochemistry-ICECHIM, 060021 Bucharest, Romania
| | - Violeta Purcar
- National Research and Development Institute for Chemistry and Petrochemistry-ICECHIM, 060021 Bucharest, Romania
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