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Tanaka S, Adachi K. Label-free colorimetric analysis strategies based on adsorption-responsive surface-enhanced photochromic phenomena of tungsten(VI) oxide nanoparticles for amino acids. ANAL SCI 2024; 40:1695-1708. [PMID: 38836971 DOI: 10.1007/s44211-024-00607-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Accepted: 05/18/2024] [Indexed: 06/06/2024]
Abstract
Herein, we present a colorimetric detection method based on the surface-enhanced photochromic phenomenon of tungsten (VI) oxide (WO3) nanocolloid particles for α-amino acid (AA) molecules, including L-aspartic acid (Asp), L-glutamic acid (Glu), L-histidine (His), L-isoleucine (Ile), L-leucine (Leu), L-lysine (Lys), L-phenylalanine (Phe), and L-valine (Val). The UV-induced photochromic phenomena in the AA/WO3 binary aqueous systems were investigated using UV-Vis absorption spectrometry. The adsorption properties of the AA molecules on the surface of the WO3 nanocolloid particles have been identified using a combination of adsorption isotherm analysis and attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy. A good linear correlation between the concentration of the AAs adsorbed on the surface of the WO3 nanocolloid particles and the initial photochromic coloration rate in the corresponding UV-irradiated WO3 colloidal aqueous solution was obtained with over three orders of magnitude, indicating that the surface-enhanced photochromic phenomenon of the WO3 nanocolloid particle can be used to detect the AA molecules. In addition, based on the results of the UV-Vis absorption, ATR-FTIR, and adsorption isotherm analyses, we have experimentally demonstrated that the AA/WO3 binary aqueous system with inner-sphere adsorbed Ile, Leu, Lys, or Val molecules on the surface of the WO3 nanocolloid particles exhibits a more significant surface-enhanced photochromic phenomenon than the system with outer-sphere adsorbed Asp, Glu, His, or Phe molecules. The strong inner-sphere adsorption of the AA molecules successfully improved the limit of detection. This study provides valuable insights into a "label-free" colorimetric assay system based on the surface-enhanced photochromic phenomenon of the WO3 nanocolloid probe.
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Affiliation(s)
- Shohei Tanaka
- Department of Chemistry, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, 753-8512, Japan
| | - Kenta Adachi
- Department of Chemistry, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, 753-8512, Japan.
- Opto-Energy Research Center, Yamaguchi University, Yamaguchi, 753-8511, Japan.
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Liu C, Li Y, Lei M, Liu D, Li B, Fu C, Guo J. Interlayer manipulation of bio-inspired Ti 3C 2T x nanocontainer through intercalation of amino acid molecules to dramatically boosting uranyl hijacking capability from seawater. JOURNAL OF HAZARDOUS MATERIALS 2024; 469:134002. [PMID: 38503213 DOI: 10.1016/j.jhazmat.2024.134002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/20/2024] [Accepted: 03/08/2024] [Indexed: 03/21/2024]
Abstract
More than 4.5 billion tons of unconventional uranium resources [UO2(CO3)3]4- are uniformly dissolved in seawater, providing a sustainable and abundant fuel source for the development of nuclear energy. Herein, we presented a rational design and development of Ti3C2Tx nanocontainer inspired by the exceptional selectivity and affinity exhibited by superb-uranyl proteins through amino acid intercalation. The amino acid intercalation of Ti3C2Tx demonstrated exceptional UO22+ capture capacity (Arg-Ti3C2Tx, His-Ti3C2Tx, and Lys-Ti3C2Tx with qmax values of 594.46, 846.04, and 1030.17 mg/g). Furthermore, these intercalated materials exhibited remarkable sequestration efficiency and selectivity (Uinitial = ∼45.2 ∼7636 μg/L; ∼84.45% ∼98.08%; and ∼2.72 ×104 ∼1.28 ×105 KdU value), despite the presence of an overwhelming surplus of Na+, Ca2+, Mg2+, and Co2+ ions. Significantly, even in the 0.3 M NaHCO3 solution and surpassing 103-fold of the Na3VO4 system, the adsorption efficiency of Lys-Ti3C2Tx still achieved a remarkable 63.73% and 65.05%. Moreover, the Lys-Ti3C2Tx can extract ∼30.23 ∼8664.03 μg/g uranium after 24 h contact in ∼13.3 ∼5000 μg/L concentration from uranium-spiked natural seawater. The mechanism analysis revealed that the high binding capability can be attributed to the chelation of carboxyl and amino groups with uranyl ions. This innovative state-of-the-art approach in regulating uranium harvesting capability through intercalation of amino acid molecules provides novel insights for extracting uranium from seawater.
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Affiliation(s)
- Chang Liu
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, People's Republic of China
| | - Ye Li
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, People's Republic of China.
| | - Miao Lei
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, People's Republic of China
| | - Dongxue Liu
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, People's Republic of China
| | - Bolin Li
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, People's Republic of China
| | - Chengbin Fu
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, People's Republic of China
| | - Junpeng Guo
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, People's Republic of China
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3
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Aravena RI, Hallett JP. Protic ionic liquids based on fatty acids: a mixture of ionic and non-ionic molecules. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Wiśniewski M. The Consequences of Water Interactions with Nitrogen-Containing Carbonaceous Quantum Dots-The Mechanistic Studies. Int J Mol Sci 2022; 23:14292. [PMID: 36430767 PMCID: PMC9694419 DOI: 10.3390/ijms232214292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 11/12/2022] [Accepted: 11/16/2022] [Indexed: 11/20/2022] Open
Abstract
Despite the importance of quantum dots in a wide range of biological, chemical, and physical processes, the structure of the molecular layers surrounding their surface in solution remains unknown. Thus, knowledge about the interaction mechanism of Nitrogen enriched Carbonaceous Quantum Dots' (N-CQDs) surface with water-their natural environment-is highly desirable. A diffusive and Stern layer over the N-CQDs, characterized in situ, reveals the presence of anionic water clusters [OH(H2O)n]-. Their existence explains new observations: (i) the unexpectedly low adsorption enthalpy (ΔHads) in a pressure range below 0.1 p/ps, and ΔHads being as high as 190 kJ/mol at 0.11 p/ps; (ii) the presence of a "conductive window" isolating nature-at p/ps below 0.45-connected to the formation of smaller clusters and increasing conductivity above 0.45 p/ps, (iii) Stern layer stability; and (iv) superhydrophilic properties of the tested material. These observables are the consequences of H2O dissociative adsorption on N-containing basic centers. The additional direct application of surfaces formed by N-CQDs spraying is the possibility of creating antistatic, antifogging, bio-friendly coatings.
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Affiliation(s)
- Marek Wiśniewski
- Physicochemistry of Carbon Materials Research Group, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, 87-100 Toruń, Poland
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Chelius K, Wat JH, Phadkule A, Reppert M. Distinct electrostatic frequency tuning rates for amide I and amide I' vibrations. J Chem Phys 2021; 155:195101. [PMID: 34800962 DOI: 10.1063/5.0064518] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Amide I spectroscopy probes the backbone C=O stretch vibrations of peptides and proteins. Amide I spectra are often collected in deuterated water (D2O) since this provides a cleaner background in the amide I frequency range; such data are often referred to as amide I' spectra since deuteration induces changes in the mode structure, including a roughly ∼10 cm-1 redshift. For biological samples, however, deuteration is often not possible. As amide I frequency maps are increasingly applied to quantitative protein structural analysis, this raises the interesting challenge of drawing direct connections between amide I and amide I' data. We here analyze amide I and amide I' peak frequencies for a series of dipeptides and related compounds. Changes in protonation state induce large electrostatic shifts in the peak frequencies, allowing us to amass a sizable library of data points for direct amide I/amide I' comparison. While we find an excellent linear correlation between amide I and amide I' peak frequencies, the deuteration-induced shift is smaller for more red-shifted vibrations, indicating different electrostatic tuning rates in the two solvents. H2O/D2O shifts were negligible for proline-containing dipeptides that lack exchangeable amide hydrogens, indicating that the intrinsic properties of the solvent do not strongly influence the H/D shift. These findings indicate that the distinct tuning rates observed for the two vibrations arise from modifications to the intrinsic properties of the amide bond and provide (at least for solvated dipeptides) a simple, linear "map" for translating between amide I and amide I' frequencies.
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Affiliation(s)
- Kevin Chelius
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, USA
| | - Jacob H Wat
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, USA
| | - Amala Phadkule
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, USA
| | - Mike Reppert
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, USA
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Sebastiani F, Ma CY, Funke S, Bäumer A, Decka D, Hoberg C, Esser A, Forbert H, Schwaab G, Marx D, Havenith M. Probing Local Electrostatics of Glycine in Aqueous Solution by THz Spectroscopy. Angew Chem Int Ed Engl 2021; 60:3768-3772. [PMID: 33156972 PMCID: PMC7898531 DOI: 10.1002/anie.202014133] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Indexed: 11/13/2022]
Abstract
Based upon precise terahertz (THz) measurements of the solvated amino acid glycine and accompanying ab-initio molecular-dynamics simulations, we show that the N-C-C-O open/close mode at 315 cm-1 serves as a sensitive, label-free probe for the local protonation of the amide group. Experimentally, we can show that this holds not only for glycine but also for diglycine and valine. The approach is more general, since the changes due to protonation result in intensity changes which can be probed by THz time domain (0-50 cm-1 ) as well as by precise THz-FT spectroscopy (50-400 cm-1 ). A detailed analysis allows us to directly correlate the titration spectra with pKa values. This demonstrates the potential of THz spectroscopy to probe the charge state of a natural amino acid in water in a label-free manner.
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Affiliation(s)
- Federico Sebastiani
- Lehrstuhl für Physikalische Chemie IIRuhr-Universität Bochum44780BochumGermany
| | - Chun Yu Ma
- Lehrstuhl für Physikalische Chemie IIRuhr-Universität Bochum44780BochumGermany
| | - Sarah Funke
- Lehrstuhl für Physikalische Chemie IIRuhr-Universität Bochum44780BochumGermany
| | - Alexander Bäumer
- Lehrstuhl für Physikalische Chemie IIRuhr-Universität Bochum44780BochumGermany
| | - Dominique Decka
- Lehrstuhl für Physikalische Chemie IIRuhr-Universität Bochum44780BochumGermany
| | - Claudius Hoberg
- Lehrstuhl für Physikalische Chemie IIRuhr-Universität Bochum44780BochumGermany
| | - Alexander Esser
- Lehrstuhl für Theoretische ChemieRuhr-Universität Bochum44780BochumGermany
| | - Harald Forbert
- Center for Solvation Science ZEMOSRuhr-Universität Bochum44780BochumGermany
| | - Gerhard Schwaab
- Lehrstuhl für Physikalische Chemie IIRuhr-Universität Bochum44780BochumGermany
| | - Dominik Marx
- Lehrstuhl für Theoretische ChemieRuhr-Universität Bochum44780BochumGermany
| | - Martina Havenith
- Lehrstuhl für Physikalische Chemie IIRuhr-Universität Bochum44780BochumGermany
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Sebastiani F, Ma CY, Funke S, Bäumer A, Decka D, Hoberg C, Esser A, Forbert H, Schwaab G, Marx D, Havenith M. Probing Local Electrostatics of Glycine in Aqueous Solution by THz Spectroscopy. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202014133] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Federico Sebastiani
- Lehrstuhl für Physikalische Chemie II Ruhr-Universität Bochum 44780 Bochum Germany
| | - Chun Yu Ma
- Lehrstuhl für Physikalische Chemie II Ruhr-Universität Bochum 44780 Bochum Germany
| | - Sarah Funke
- Lehrstuhl für Physikalische Chemie II Ruhr-Universität Bochum 44780 Bochum Germany
| | - Alexander Bäumer
- Lehrstuhl für Physikalische Chemie II Ruhr-Universität Bochum 44780 Bochum Germany
| | - Dominique Decka
- Lehrstuhl für Physikalische Chemie II Ruhr-Universität Bochum 44780 Bochum Germany
| | - Claudius Hoberg
- Lehrstuhl für Physikalische Chemie II Ruhr-Universität Bochum 44780 Bochum Germany
| | - Alexander Esser
- Lehrstuhl für Theoretische Chemie Ruhr-Universität Bochum 44780 Bochum Germany
| | - Harald Forbert
- Center for Solvation Science ZEMOS Ruhr-Universität Bochum 44780 Bochum Germany
| | - Gerhard Schwaab
- Lehrstuhl für Physikalische Chemie II Ruhr-Universität Bochum 44780 Bochum Germany
| | - Dominik Marx
- Lehrstuhl für Theoretische Chemie Ruhr-Universität Bochum 44780 Bochum Germany
| | - Martina Havenith
- Lehrstuhl für Physikalische Chemie II Ruhr-Universität Bochum 44780 Bochum Germany
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8
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Haro-Mares NB, Meza-Contreras JC, López-Dellamary Toral FA, González-Cruz R, Silva-Guzmán JA, Manríquez-González R. A Simplified Method of Synthesis to Obtain Zwitterionic Cellulose under Mild Conditions with Active Ionic Moieties. MOLECULES (BASEL, SWITZERLAND) 2020; 25:molecules25133065. [PMID: 32635597 PMCID: PMC7412472 DOI: 10.3390/molecules25133065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/01/2020] [Accepted: 07/02/2020] [Indexed: 01/24/2023]
Abstract
A simplified procedure to synthesize zwitterionic cellulose by means of N-protected aspartic anhydride under mild conditions was developed. The preparation of modified cellulose samples was carried out under heterogeneous, aqueous conditions by reacting NH4OH-activated cellulose with aspartic anhydrides N-protected with trifluoroacetyl (TFAc) and carbobenzyloxy (Cbz). Modified cellulose samples Cel-Asp-N-TFAc and Cel-Asp-N-Cbz were characterized by Fourier Transform Infrared (FTIR) and 13C solid state Nuclear Magnetic Resonance (NMR) spectroscopy. The functionalization degree of each cellulose sample was determined by the 13C NMR signal integration values corresponding to the cellulose C1 vs. the Cα of the aspartate residue and corroborated by elemental analysis. In agreement, both analytical methods averaged a grafting degree of 20% for Cel-Asp-N-TFAc and 16% for Cel-Asp-N-Cbz. Conveniently, Cel-Asp-N-TFAc was concomitantly partially N-deprotected (65%) as determined by the ninhydrin method. The zwitterion character of this sample was confirmed by a potentiometric titration curve and the availability of these amino acid residues on the cellulose was inspected by adsorption kinetics method with a 100 mg L−1 cotton blue dye solution. In addition, the synthesis reported in the present work involves environmentally related advantages over previous methodologies developed in our group concerning to zwitterionic cellulose preparation.
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pH-dependent adsorption of α-amino acids, lysine, glutamic acid, serine and glycine, on TiO2 nanoparticle surfaces. J Colloid Interface Sci 2019; 554:362-375. [DOI: 10.1016/j.jcis.2019.06.086] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Revised: 06/24/2019] [Accepted: 06/25/2019] [Indexed: 12/28/2022]
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10
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Abaskharon RM, Mukherjee D, Gai F. 4-Oxoproline as a Site-Specific Infrared Probe: Application To Assess Proline Isomerization and Dimer Formation. J Phys Chem B 2019; 123:5079-5085. [PMID: 31135160 DOI: 10.1021/acs.jpcb.9b03766] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Due to its unique structure, proline plays important structural and functional roles in proteins. However, this special amino acid lacks an adequate vibrational mode that can be exploited to probe its local electrostatic and hydration status via infrared spectroscopy. Herein, we show that the C═O stretching vibration of a proline derivative, 4-oxoproline, is sensitive to local environment and hence can be used as a site-specific infrared probe. We further validate this notion by applying this unnatural amino acid to assess the thermodynamics of proline cis-trans isomerization in a peptide environment and examine the amino acid dimer formation in concentrated proline and glycine solutions.
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Affiliation(s)
- Rachel M Abaskharon
- Department of Chemistry , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Debopreeti Mukherjee
- Department of Chemistry , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Feng Gai
- Department of Chemistry , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
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11
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Synthesis and characterization of nanocrystalline composites containing calcium hydroxyapatite and glycine. J SOLID STATE CHEM 2018. [DOI: 10.1016/j.jssc.2018.05.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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12
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Yang Y, Wang S, Liu J, Xu Y, Zhou X. Adsorption of Lysine on Na-Montmorillonite and Competition with Ca(2+): A Combined XRD and ATR-FTIR Study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:4746-4754. [PMID: 27118104 DOI: 10.1021/acs.langmuir.6b00563] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Lysine adsorption at clay/aqueous interfaces plays an important role in the mobility, bioavailability, and degradation of amino acids in the environment. Knowledge of these interfacial interactions facilitates our full understanding of the fate and transport of amino acids. Here, X-ray diffraction (XRD) and attenuated total reflectance Fourier-transform infrared spectroscopy (ATR-FTIR) measurements were used to explore the dynamic process of lysine adsorption on montmorillonite and the competition with Ca(2+) at the molecular level. Density functional theory (DFT) calculations were employed to determine the peak assignments of dissolved lysine in the solution phase. Three surface complexes, including dicationic, cationic, and zwitterionic structures, were observed to attach to the clay edge sites and penetrate the interlayer space. The increased surface coverage and Ca(2+) competition did not affect the interfacial lysine structures at a certain pH, whereas an elevated lysine concentration contributed to zwitterionic-type coordination at pH 10. Moreover, clay dissolution at pH 4 could be inhibited at a higher surface coverage with 5 and 10 mM lysine, whereas the inhibition effect was inconspicuous or undetected at pH 7 and 10. The presence of Ca(2+) not only could remove a part of the adsorbed lysine but also could facilitate the readsorption of dissolved Si(4+) and Al(3+) and surface protonation. Our results provide new insights into the process of lysine adsorption and its effects on montmorillonite surface sites.
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Affiliation(s)
- Yanli Yang
- State Key Laboratory of Environmental Criteria and Risk Assessment, ‡State Environmental Protection Key Laboratory for Lake Pollution Control, Research Center of Lake Eco-Environment, and §State Key Laboratory of Environmental Protection Ecology Industry, Chinese Research Academy of Environmental Sciences , Beijing 100012, China
| | - Shengrui Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, ‡State Environmental Protection Key Laboratory for Lake Pollution Control, Research Center of Lake Eco-Environment, and §State Key Laboratory of Environmental Protection Ecology Industry, Chinese Research Academy of Environmental Sciences , Beijing 100012, China
| | - Jingyang Liu
- State Key Laboratory of Environmental Criteria and Risk Assessment, ‡State Environmental Protection Key Laboratory for Lake Pollution Control, Research Center of Lake Eco-Environment, and §State Key Laboratory of Environmental Protection Ecology Industry, Chinese Research Academy of Environmental Sciences , Beijing 100012, China
| | - Yisheng Xu
- State Key Laboratory of Environmental Criteria and Risk Assessment, ‡State Environmental Protection Key Laboratory for Lake Pollution Control, Research Center of Lake Eco-Environment, and §State Key Laboratory of Environmental Protection Ecology Industry, Chinese Research Academy of Environmental Sciences , Beijing 100012, China
| | - Xiaoyun Zhou
- State Key Laboratory of Environmental Criteria and Risk Assessment, ‡State Environmental Protection Key Laboratory for Lake Pollution Control, Research Center of Lake Eco-Environment, and §State Key Laboratory of Environmental Protection Ecology Industry, Chinese Research Academy of Environmental Sciences , Beijing 100012, China
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Sebben D, Pendleton P. Analysis of ionic strength effects on the adsorption of simple amino acids. J Colloid Interface Sci 2015; 443:153-61. [DOI: 10.1016/j.jcis.2014.12.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 12/02/2014] [Accepted: 12/04/2014] [Indexed: 11/29/2022]
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Guo FY, Liu YG, Wang H, Zeng GM, Hu XJ, Zheng BH, Li TT, Tan XF, Wang SF, Zhang MM. Adsorption behavior of Cr(vi) from aqueous solution onto magnetic graphene oxide functionalized with 1,2-diaminocyclohexanetetraacetic acid. RSC Adv 2015. [DOI: 10.1039/c5ra02015h] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel magnetic composite adsorbent was synthesized by grafting 1,2-diaminocyclohexanetetraacetic acid to magnetic graphene oxide (DCTA/E/MGO).
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