1
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Hao X, Gu Q, Isborn C, Vasquez JR, Long MP, Ye T. Quantitative measurement of cation-mediated adhesion of DNA to anionic surfaces. SOFT MATTER 2024. [PMID: 39194357 DOI: 10.1039/d3sm01733h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/29/2024]
Abstract
Anionic polyelectrolytes, such as DNA, are attracted to anionic surfaces in the presence of multivalent cations. A major barrier toward molecular-level understanding of these attractive interactions is the paucity of measurements of the binding strength. Here, atomic force microscopy-based single molecule force spectroscopy was used to quantify the binding free energy of double-stranded DNA to an anionic surface, with complementary density functional theory calculations of the binding energies of metal ion-ligand complexes. The results support both electrostatic attraction and ion-specific binding. Our study suggests that the correlated interactions between counterions are responsible for attraction between DNA and an anionic surface, but the strength of this attraction is modulated by the identity of the metal ion. We propose a mechanism in which the strength of metal-ligand binding, as well as the preference for particular binding sites, influence both the concentration dependence and the strength of the DNA-surface interactions.
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Affiliation(s)
- Xian Hao
- Department of Chemistry and Biochemistry, School of Natural Sciences, University of California, Merced, California 95343, USA.
- School of Public Health and Jiangxi Provincial Key Laboratory of Disease Prevention and Public Health, Nanchang University, Nanchang, Jiangxi 330006, China
| | - Qufei Gu
- Materials and Biomaterials Science and Engineering, School of Engineering, University of California, Merced, California 95343, USA
| | - Christine Isborn
- Department of Chemistry and Biochemistry, School of Natural Sciences, University of California, Merced, California 95343, USA.
| | - Jesus Rodriguez Vasquez
- Department of Chemistry and Biochemistry, School of Natural Sciences, University of California, Merced, California 95343, USA.
| | - Makenzie Provorse Long
- Department of Chemistry and Biochemistry, Creighton University, Omaha, Nebraska 68178, USA.
| | - Tao Ye
- Department of Chemistry and Biochemistry, School of Natural Sciences, University of California, Merced, California 95343, USA.
- Materials and Biomaterials Science and Engineering, School of Engineering, University of California, Merced, California 95343, USA
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2
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Rashmi, Sharma SK, Chaudhary V, Pala RGS, Sivakumar S. Rapid nucleation and optimal surface-ligand interaction stabilize wurtzite MnSe. Phys Chem Chem Phys 2024; 26:20837-20851. [PMID: 39044559 DOI: 10.1039/d4cp02294g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
Non-native structures (NNS) differ in discrete translational symmetry from the bulk ground state native structure (NS). To explore the extent of deconvolution of various factors relevant to the stabilization of the wurtzite/NNS of MnSe via a heat-up method, we performed experiments using various ligands (oleic acid, oleylamine, octadecylamine, stearic acid, and octadecene), solvents (tetraethylene glycol and octadecene), and precursor salts (manganese chloride and manganese acetate). Experiments suggest that oleic acid in the presence of tetraethylene glycol and oleylamine in the presence of octadecene stabilize wurtzite/NNS. Further, density functional theory (DFT) computations explore the interaction between the functional groups in ligands and the most exposed surfaces of wurtzite/NNS and rocksalt/NS polymorphs. Computations suggest that the interactions between relevant surface facets with carboxylic acid and the double bond functional groups suppress the phase transformation from NNS to NS. In addition, the ionizability of the precursor salt also determines the rate of formation of the metal-ligand complex and the rate of nucleation. Consequently, the formation rate of the Mn-ligand complex is expected to be greater in the case of chloride salt than acetate salt because the chloride salt has higher ionizability in ethylene glycol. From the above, we conclude that the kinetics of the wurtzite/NNS to rocksalt/NS phase transformation depends mainly on two factors: (1) nucleation/growth kinetics which is controlled by the ionizability of the precursor salt, solvent, and stability of the metal-ligand complex, and (2) the activation energy barrier of the NNS to NS conversion which is controlled by surface energy minimization with the ligand.
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Affiliation(s)
- Rashmi
- Materials Science Programme, Indian Institute of Technology, Kanpur, Uttar Pradesh, 208016, India.
| | - Shilendra Kumar Sharma
- Materials Science Programme, Indian Institute of Technology, Kanpur, Uttar Pradesh, 208016, India.
| | - Vivek Chaudhary
- Department of Chemical Engineering, Indian Institute of Technology, Kanpur, Uttar Pradesh, 208016, India
| | - Raj Ganesh S Pala
- Materials Science Programme, Indian Institute of Technology, Kanpur, Uttar Pradesh, 208016, India.
- Department of Chemical Engineering, Indian Institute of Technology, Kanpur, Uttar Pradesh, 208016, India
| | - Sri Sivakumar
- Materials Science Programme, Indian Institute of Technology, Kanpur, Uttar Pradesh, 208016, India.
- Department of Chemical Engineering, Indian Institute of Technology, Kanpur, Uttar Pradesh, 208016, India
- Centre for Environmental Science and Engineering, Indian Institute of Technology, Kanpur, Uttar Pradesh, 208016, India
- Centre for Nanosciences, Indian Institute of Technology, Kanpur, Uttar Pradesh, 208016, India
- Gangwal School and Mehta Family Center for Engineering in Medicine, Indian Institute of Technology, Kanpur, Uttar Pradesh, 208016, India
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3
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K AK, Jujaru M, Panwar J, Gupta S. Non-derivatizing solvent assisted waste-derived cellulose/ MOF composite porous matrix for efficient metal ion removal: comprehensive analysis of batch and continuous packed-bed column sorption studies. RSC Adv 2024; 14:20254-20277. [PMID: 38953057 PMCID: PMC11215655 DOI: 10.1039/d4ra02566k] [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: 04/05/2024] [Accepted: 06/17/2024] [Indexed: 07/03/2024] Open
Abstract
The use of metal-organic frameworks (MOFs) for wastewater treatment in continuous operation is a major challenge. To address this, the present study demonstrates the eco-friendly and economic synthesis of Ca-MOF immobilized cellulose beads (Ca-MOF-CB) derived from paper waste. The synthesized Ca-MOF-CB were characterized using standard analytical techniques. Batch sorption studies were performed to check the effect of cellulose composition (wt%), Ca-MOF loading, contact time, and initial metal ion (Pb2+, Cd2+, and Cu2+) concentration. Ca-MOF-CB beads exhibited outstanding equilibrium sorption capacities for Pb2+, Cd2+, and Cu2+, with estimated values of 281.22 ± 7.8, 104.01 ± 10.58, and 114.21 ± 9.68 mg g-1, respectively. Different non-linear isotherms and kinetic models were applied which confirmed the spontaneous, endothermic reactions for the physisorption of Pb2+, Cd2+, and Cu2+. Based on the highest equilibrium sorption capacity for Pb2+ ion, in-depth parametric column studies were conducted in an indigenously developed packed-bed column set-up. The effect of packed-bed height (10 and 20 cm), inlet flow rate (5 and 10 mL min-1), and inlet Pb2+ ion concentration (200, 300, and 500 mg L-1) were studied. The breakthrough curves obtained at different operating conditions were fitted with the empirical models viz. the bed depth service time (BDST), Yoon-Nelson, Thomas, and Yan to estimate the column design parameters. In order to determine the financial implications at large-scale industrial operations, an affordable synthesis cost of 1 kg of Ca-MOF-CB was estimated. Conclusively, the present study showed the feasibility of the developed Ca-MOF-CB for the continuous removal of metal ions at an industrial scale.
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Affiliation(s)
- Anil Kumar K
- Department of Chemical Engineering, Birla Institute of Technology and Science Pilani 333 031 India
| | - Mohan Jujaru
- Department of Chemical Engineering, Birla Institute of Technology and Science Pilani 333 031 India
| | - Jitendra Panwar
- Department of Biological Sciences, Birla Institute of Technology and Science Pilani 333 031 India
| | - Suresh Gupta
- Department of Chemical Engineering, Birla Institute of Technology and Science Pilani 333 031 India
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4
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Grega MN, Gan J, Noman M, Asbury JB. Reversible Ligand Detachment from CdSe Quantum Dots Following Photoexcitation. J Phys Chem Lett 2024; 15:3987-3995. [PMID: 38573308 DOI: 10.1021/acs.jpclett.4c00529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
The nanocrystal-ligand boundaries of colloidal quantum dots (QDs) mediate charge and energy transfer processes that underpin photochemical and photocatalytic transformations at their surfaces. We used time-resolved infrared spectroscopy combined with transient electronic spectroscopy to probe vibrational modes of the carboxylate anchoring groups of stearate ligands attached to cadmium selenide (CdSe) QDs that were optically excited in solid nanocrystal films. The vibrational frequencies of surface-bonded carboxylate groups revealed their interactions with surface-localized holes in the excited states of the QDs. We also observed transient and reversible photoinduced ligand detachment from CdSe nanocrystals within their excited state lifetime. By probing both surface charge distributions and ligand dynamics on QDs in their excited states, we open a pathway to explore how the nanocrystal-ligand boundary can be understood and controlled for the design of QD architectures that most effectively drive charge transfer processes in solar energy harvesting and photoredox catalysis applications.
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Affiliation(s)
- McKenna N Grega
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Jianing Gan
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Muhammad Noman
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - John B Asbury
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Intercollege Materials Science and Engineering Program, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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5
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Dong J, Li J, Huang Y, Zhong J, Dun K, Wu M, Zhang L, Chen Q, Pan B. Understanding the release, migration, and risk of heavy metals in coal gangue: An approach by combining experimental and computational investigations. JOURNAL OF HAZARDOUS MATERIALS 2024; 461:132707. [PMID: 37813031 DOI: 10.1016/j.jhazmat.2023.132707] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/21/2023] [Accepted: 10/02/2023] [Indexed: 10/11/2023]
Abstract
The lack of understanding on the environmental fate and implications of heavy metals in coal gangue (CG) has restrained its utilization. Conventional extraction methods provide empirical measures of heavy metal speciation, lacking a detailed description of bound strength, which limits long-term risk assessment. In this study, the releasing and migrating behavior of six heavy metals (Cd, As, Pb, Ni, Cu, and Cr) were investigated through an approach by combining experimental and computational investigations. The corresponding mechanisms and risks were understood and discussed on a molecular level. The results suggested that CG is primarily a natural kaolinite α-quartz and anatase mineral. The sequence extraction results showed that heavy metals in CG are mainly distributed in stable silicate and iron manganese oxide-bound states. The toxicity characteristic leaching procedure test advised Cu, Cr, Ni, and Pb had a high toxic level and thus required long-term monitoring and controlling. A quantum chemical calculation demonstrated that the heavy metals were more likely to be embedded in silicate minerals with high binding energy than those binding on the anatase surface. The findings of this research provide a promising approach to comprehensively evaluate the stability mechanism and potential long-term risks of heavy metals in solid waste.
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Affiliation(s)
- Jihong Dong
- Yunnan Provincial Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, Yunnan, China
| | - Jiabang Li
- Yunnan Provincial Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, Yunnan, China
| | - Yu Huang
- Yunnan Provincial Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, Yunnan, China.
| | - Jingyu Zhong
- Yunnan Provincial Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, Yunnan, China
| | - Kai Dun
- Yunnan Provincial Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, Yunnan, China
| | - Min Wu
- Yunnan Provincial Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, Yunnan, China
| | - Lijuan Zhang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Quan Chen
- Yunnan Provincial Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, Yunnan, China.
| | - Bo Pan
- Yunnan Provincial Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, Yunnan, China
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6
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Soran ML, Lung I, Stegarescu A, Culicov O, Opriș O, Nekhoroshkov P, Podar D. Correlation of Elemental Transfer, Bioactive Compounds and Antioxidant Activity on Lactuca sativa L. Grown in Soil with Functionalized CNT and HMs. Metabolites 2023; 13:1171. [PMID: 38132853 PMCID: PMC10744709 DOI: 10.3390/metabo13121171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/21/2023] [Accepted: 11/22/2023] [Indexed: 12/23/2023] Open
Abstract
While heavy metals (HM) have been considered in recent decades to be the most common and problematic pollutants, the expansion of the list of pollutants due to the active use of carbon nanotubes (CNT) raises new questions about the benefit and harm of HM released to nature individually or fixed on CNT walls. A pot experiment was conducted to compare the effect of two classes of potential pollutants-metal salts of Pb, Mn, Cu, Zn, Cd, and Ni; and functionalized CNTs with COOH, MnO2, Fe3O4, and MnO2-Fe3O4-applied in soil, on the elemental transfer, the bioactive compounds accumulation, and the antioxidant activity in lettuce. While CNTs mainly increased the elemental transfer from soil to leaves, HM salts strongly obstructed it. In the presence of CNTs, the antioxidant activity in lettuce leaves correlated with the transfer of elements from soil to root and from root to leaves. The excess of HMs in soil induced a greater variation of the polyphenols quantity and antioxidant activity than the excess of CNTs. It might be assumed that lettuce perceived HMs as a more aggressive stressor than CNTs and more strongly activated the defense mechanism, showing the reduction of the element transfer and enhancing of total polyphenol production and antioxidant activity.
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Affiliation(s)
- Maria-Loredana Soran
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat, 400293 Cluj-Napoca, Romania; (M.-L.S.); (I.L.); (A.S.); (O.O.)
| | - Ildiko Lung
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat, 400293 Cluj-Napoca, Romania; (M.-L.S.); (I.L.); (A.S.); (O.O.)
| | - Adina Stegarescu
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat, 400293 Cluj-Napoca, Romania; (M.-L.S.); (I.L.); (A.S.); (O.O.)
| | - Otilia Culicov
- Joint Institute for Nuclear Research, 6 Joliot-Curie, 141980 Dubna, Russia;
- National Institute for Research and Development in Electrical Engineering ICPE-CA, 313 Splaiul Unirii, 030138 Bucharest, Romania
| | - Ocsana Opriș
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat, 400293 Cluj-Napoca, Romania; (M.-L.S.); (I.L.); (A.S.); (O.O.)
| | - Pavel Nekhoroshkov
- Joint Institute for Nuclear Research, 6 Joliot-Curie, 141980 Dubna, Russia;
| | - Dorina Podar
- Department of Molecular Biology and Biotechnology, Faculty of Biology and Geology, Babeș-Bolyai University, 1 Kogălniceanu St., 400084 Cluj-Napoca, Romania;
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7
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Yeh SL, Alexander D, Narasimhalu N, Koshani R, Sheikhi A. Mussel-Inspired Nanocellulose Coating for Selective Neodymium Recovery. ACS APPLIED MATERIALS & INTERFACES 2023; 15:44154-44166. [PMID: 37523242 DOI: 10.1021/acsami.3c04512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
Neodymium (Nd) is one of the most in-demand rare earth elements (REEs) for developing the next generation of magnetic medical devices and clean energy. Eco-friendly and sustainable nanotechnology for REE recovery may be highly suitable to address the limited global supply while minimizing the environmental footprints of current practice, such as solvent extraction. Here, we present a novel one-step mussel-inspired nanocellulose coating (MINC) using bifunctional hairy cellulose nanocrystals (BHCNC), bearing dialdehyde and dicarboxylate groups. The dialdehyde groups enable dopamine-mediated orthogonal conjugation of BHCNC to substrates, such as microparticles, while the high content of dicarboxylate groups yields high-capacity and selective Nd removal against ferric, calcium, and sodium ions. To the best of our knowledge, the MINC-treated substrate provides the most rapid selective removal and recovery of Nd ions even at low Nd concentrations with a capacity that is among the highest reported values. We envision that the MINC will provide new opportunities in developing next-generation bio-based materials and interfaces for the sustainable recovery of REEs and other precious elements.
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Affiliation(s)
- Shang-Lin Yeh
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Dawson Alexander
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Naveen Narasimhalu
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Roya Koshani
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Amir Sheikhi
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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8
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Lee E, Choi S, Zhao Y, Yu J. Open Linear Polymer Host-Guest Interactions Sensed by Luminescent Silver Nanodots. ACS Sens 2023; 8:3240-3247. [PMID: 37480154 DOI: 10.1021/acssensors.3c01042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/23/2023]
Abstract
The selectivity of the linear polymer chain toward its binding moieties has been considered negligible; thus, a clear demonstration showing the best-fit binding of a linear polymer to its guest counterpart is still unknown. Luminescent poly(acrylic acid) (PAA)-stabilized silver nanodots (PAA-AgNDs) have been applied as a turn-on sensor to monitor the interaction between the PAA chain and its binding cations. The binding of cations ions to the PAA chain may cross-link the linear PAA chain via coordination with carboxylate, which increases the rigidity of the polymer chain, retards the nonradiative decay of PAA-AgNDs, and consequently enhances the emission of silver nanodots while inducing a blue-shift of its emission spectrum. For the first time, we have demonstrated that a linear polymer chain can act as an open host to selectively bind to its best-matching cations. Specifically, among Group 2 cations (Mg2+, Ca2+, Sr2+, Ba2+), calcium ions show the strongest bonding to the PAA polymer chain. Our research suggests that, with extra rigidity, the polymer improves its chemical stability as calcium ions cross-linked the linear polymer. Meanwhile, it has also been demonstrated that luminescent silver nanodots can be excellent probes for the detection of polymer activities with straightforward and simple visualization methods.
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Affiliation(s)
- Eunhye Lee
- Department of Chemistry Education, Seoul National University, Seoul 08826, Republic of Korea
| | - Sungmoon Choi
- Center for Educational Research, Seoul National University, Seoul 08826, Republic of Korea
| | - Yanlu Zhao
- Department of Chemistry Education, Seoul National University, Seoul 08826, Republic of Korea
| | - Junhua Yu
- Department of Chemistry Education, Seoul National University, Seoul 08826, Republic of Korea
- Department of Science Education, Science Education Research Center, Seoul National University, Seoul 08826, Republic of Korea
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9
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Dikici E, Önal Acet B, Acet Ö, Odabaşı M. “Lab-on-pol” colormatic sensor platforms: Melamine detection with color change on melamine imprinted membranes. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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10
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Zhao J, Mathew RA, Yang DS, Vekilov PG, Hu Y, Louie SM. Natural organic matter flocculation behavior controls lead phosphate particle aggregation by mono- and divalent cations. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 866:161346. [PMID: 36603637 DOI: 10.1016/j.scitotenv.2022.161346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 11/18/2022] [Accepted: 12/29/2022] [Indexed: 06/17/2023]
Abstract
Phosphate addition is commonly applied to remediate lead contaminated sites via the formation of lead phosphate particles with low solubility. However, the effects of natural organic matter (NOM) with different properties, as well as the contributions of specific interactions (particle-particle, particle-NOM, and NOM-NOM) in enhanced stabilization or flocculation of the particles, are not currently well understood. This study investigates the influence of two aquatic NOM and two soil or coal humic acid (HA) extracts on the aggregation behavior of lead phosphate particles and explores the controlling mechanisms. All types of NOM induced disaggregation and steric stabilization of the particles in the presence of Na+ (100 mM) or low (1 mM) Ca2+ concentrations, as well as at low NOM concentrations (1 mgC/L). However, for the soil and coal HA, a threshold at NOM concentrations of 10 mgC/L and high (3 mM) Ca2+ concentrations was observed where bridging flocculation (rather than steric stabilization) occurred. In situ attenuated total reflectance - Fourier transform infrared characterization confirmed adsorption of the soil and coal humic acid extracts (10 mgC/L) onto the surface of the lead phosphate particles in 3 mM Ca2+, whereas dynamic and static light scattering demonstrated extensive HA flocculation that dominated the overall scattered light intensities. These results imply that the accelerated aggregation was induced by a combination of HA adsorption and bridging flocculation by Ca2+. Overall, this research demonstrates that the type of NOM is critical to predict the colloidal stability of lead phosphate particles. Aquatic NOM stabilized the particles under all conditions evaluated, but soil or coal HA with higher molecular weight and aromaticity showed highly variable stabilization or flocculation behavior depending on the HA and Ca2+ concentrations available to adsorb to the particles and participate in bridging. These results provide new mechanistic insights on particle stabilization or destabilization by NOM.
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Affiliation(s)
- Juntao Zhao
- Department of Civil & Environmental Engineering, University of Houston, Houston, TX 77004, USA
| | - Riya A Mathew
- Department of Civil & Environmental Engineering, University of Houston, Houston, TX 77004, USA
| | - David S Yang
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX 77004, USA
| | - Peter G Vekilov
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX 77004, USA
| | - Yandi Hu
- Department of Civil & Environmental Engineering, University of Houston, Houston, TX 77004, USA; College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China; State Environmental Protection Key Laboratory of All Material Fluxes in River Ecosystems, Beijing 100871, China
| | - Stacey M Louie
- Department of Civil & Environmental Engineering, University of Houston, Houston, TX 77004, USA.
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11
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Karanth S, Iyyaswami R, Raj NT. Biosurfactant Based Reverse Micellar Extraction of Lactoperoxidase from Whey: Exploitation of Rhamnolipid Characteristics for Back Extraction. SEP SCI TECHNOL 2023. [DOI: 10.1080/01496395.2023.2189056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Affiliation(s)
- Shwetha Karanth
- Department of Chemical Engineering, National Institute of Technology Karnataka, Mangalore, India
| | - Regupathi Iyyaswami
- Department of Chemical Engineering, National Institute of Technology Karnataka, Mangalore, India
| | - Nischal Thyagaraju Raj
- Department of Chemical Engineering, National Institute of Technology Karnataka, Mangalore, India
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12
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Raya-Barón Á, Mazarío J, Mencia G, Fazzini PF, Chaudret B. l-Lysine Stabilized FeNi Nanoparticles for the Catalytic Reduction of Biomass-Derived Substrates in Water Using Magnetic Induction. CHEMSUSCHEM 2023:e202300009. [PMID: 36877569 DOI: 10.1002/cssc.202300009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 03/03/2023] [Indexed: 06/18/2023]
Abstract
The reduction of biomass-derived compounds gives access to valuable chemicals from renewable sources, circumventing the use of fossil feedstocks. Herein, we describe the use of iron-nickel magnetic nanoparticles for the reduction of biomass model compounds in aqueous media under magnetic induction. Nanoparticles with a hydrophobic ligand (FeNi3 -PA, PA=palmitic acid) have been employed successfully, and their catalytic performance is intended to improve by ligand exchange with lysine (FeNi3 -Lys and FeNi3 @Ni-Lys NPs) to enhance water dispersibility. All three catalysts have been used to hydrogenate 5-hydroxymethylfurfural into 2,5-bis(hydroxymethyl)furan with complete selectivity and almost quantitative yields, using 3 bar of H2 and a magnetic field of 65 mT in water. These catalysts have been recycled up to 10 times maintaining high conversions. Under the same conditions, levulinic acid has been hydrogenated to γ-valerolactone, and 4'-hydroxyacetophenone hydrodeoxygenated to 4-ethylphenol, with conversions up to 70 % using FeNi3 -Lys, and selectivities above 85 % in both cases. This promising catalytic system improves biomass reduction sustainability by avoiding noble metals and expensive ligands, increasing energy efficiency via magnetic induction heating, using low H2 pressure, and proving good reusability while working in an aqueous medium.
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Affiliation(s)
- Álvaro Raya-Barón
- Université de Toulouse, UMR 5215 INSA, CNRS, UPS, Laboratoire de Physique et Chimie des Nano-Objets, 135 avenue de Rangueil, F-31077, Toulouse cedex 4, France
| | - Jaime Mazarío
- Université de Toulouse, UMR 5215 INSA, CNRS, UPS, Laboratoire de Physique et Chimie des Nano-Objets, 135 avenue de Rangueil, F-31077, Toulouse cedex 4, France
| | - Gabriel Mencia
- Université de Toulouse, UMR 5215 INSA, CNRS, UPS, Laboratoire de Physique et Chimie des Nano-Objets, 135 avenue de Rangueil, F-31077, Toulouse cedex 4, France
| | - Pier-Francesco Fazzini
- Université de Toulouse, UMR 5215 INSA, CNRS, UPS, Laboratoire de Physique et Chimie des Nano-Objets, 135 avenue de Rangueil, F-31077, Toulouse cedex 4, France
| | - Bruno Chaudret
- Université de Toulouse, UMR 5215 INSA, CNRS, UPS, Laboratoire de Physique et Chimie des Nano-Objets, 135 avenue de Rangueil, F-31077, Toulouse cedex 4, France
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13
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Vernin NS, Gillespie D. Surface charge regulation using classical density functional theory: the effect of divalent potential determining ions. Phys Chem Chem Phys 2023; 25:1023-1031. [PMID: 36533726 DOI: 10.1039/d2cp03644d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The charge regulation approach has been used to describe the charge of surfaces susceptible to the presence of protons and other ions. Conventionally, this model is used with the Poisson-Boltzmann equation, which generally neglects the finite size of the ions and the electrostatic correlations. Recently, progress has been made by coupling charge regulation with classical density functional theory (DFT), which explicitly includes these correlations. However, little is known about charge regulation at surfaces with both acid-base equilibria and complexation with multivalent ions. The main purpose of this work is to investigate the role divalent ions play in charge regulation. Using DFT, we show that the size of the divalent ion has significant consequences on the surface charge density and it should not be neglected. For the surface reactions investigated, the larger the size of the divalent cation, the greater the charge on the surface due to higher divalent concentration there. At low divalent concentration, the ion correlations play a second-order but non-negligible role; using Poisson-Boltzmann theory with point ions cannot recover the DFT surface charge. At high concentrations, ion correlations play a dominant role by creating charge inversion.
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Affiliation(s)
- Nathalia Salles Vernin
- Department of Sanitary and Environmental Engineering, Rio de Janeiro State University, Rio de Janeiro, RJ 20550-900, Brazil.
| | - Dirk Gillespie
- Department of Physiology and Biophysics, Rush University Medical Center, Chicago, IL 60612, USA.
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14
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Zanoni C, Spina S, Magnaghi LR, Guembe-Garcia M, Biesuz R, Alberti G. Potentiometric MIP-Modified Screen-Printed Cell for Phenoxy Herbicides Detection. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:16488. [PMID: 36554364 PMCID: PMC9779394 DOI: 10.3390/ijerph192416488] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/30/2022] [Accepted: 12/07/2022] [Indexed: 06/17/2023]
Abstract
In this study, a molecularly imprinted polymer (MIP)-based screen-printed cell is developed for detecting phenoxy herbicides using 2-methyl-4-chlorophenoxyacetic acid (MCPA) as the template. MCPA is a phenoxy herbicide widely used since 1945 to control broadleaf weeds via growth regulation, primarily in pasture and cereal crops. The potentiometric cell consists of a silver/silver chloride pseudo-reference electrode and a graphite working electrode coated with a MIP film. The polymeric layer is thermally formed after drop-coating of a pre-polymeric mixture composed of the reagents at the following molar ratio: 1 MCPA: 15 MAA (methacrylic acid): 7 EGDMA (ethylene glycol dimethacrylate). After template removal, the recognition cavities function as the ionophore of a classical ion selective electrode (ISE) membrane. The detected ion is the deprotonated MCPA specie, negatively charged, so the measurements were performed in phosphate buffer at pH 5.5. A linear decrease of the potential with MCPA concentration, ranging from 4 × 10-8 to 1 × 10-6 mol L-1, was obtained. The detection limit and the limit of quantification were, respectively, 10 nmol L-1 and 40 nmol L-1. A Nernstian slope of about -59 mV/dec was achieved. The method has precision and LOD required for MCPA determination in contaminated environmental samples.
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Affiliation(s)
- Camilla Zanoni
- Department of Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Stefano Spina
- Department of Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Lisa Rita Magnaghi
- Department of Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
- Unità di Ricerca di Pavia, INSTM, Via G. Giusti 9, 50121 Firenze, Italy
| | - Marta Guembe-Garcia
- Department of Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Plaza de Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Raffaela Biesuz
- Department of Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
- Unità di Ricerca di Pavia, INSTM, Via G. Giusti 9, 50121 Firenze, Italy
| | - Giancarla Alberti
- Department of Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
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15
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Christopher CN, Moutloali RM. Antibacterial studies of Ag@HPEI@GO nanocomposites and their effects on fouling and dye rejection in PES UF membranes. Heliyon 2022; 8:e11825. [DOI: 10.1016/j.heliyon.2022.e11825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 05/22/2022] [Accepted: 11/15/2022] [Indexed: 11/23/2022] Open
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16
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James AL, Perkins WT, Sian J, Hammond D, Hodgson EM. Application of biochar for minewater remediation: Effect of scaling up production on performance under laboratory and field conditions. BIORESOURCE TECHNOLOGY 2022; 359:127439. [PMID: 35680090 DOI: 10.1016/j.biortech.2022.127439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 06/03/2022] [Accepted: 06/05/2022] [Indexed: 06/15/2023]
Abstract
Metals discharged from abandoned mines are a major source of pollution in many parts of the world. As a result, there is a growing need for suitable low-cost remediation methods. While a large literature base exists demonstrating the efficacy of biochar to remove metals from solution, most studies are confined to the laboratory. This study examines the effects on the biochar quality when scaling up production from laboratory to pilot scale. Pilot scale biochars were produced using a 600 kg batch pyrolysis reactor, these chars were then deployed in the field using a series of 100 mm × 1200 mm cylindrical treatment cells installed at the point of discharge from an abandoned mine site. Most biochars produced at a pilot removed more zinc under laboratory conditions, however all of the biochars showed a reduced performance when tested in the field, this ranged from a 14% to an 85% reduction depending on the biochar.
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Affiliation(s)
- Alun L James
- Aberystwyth University, Institute of Geography and Earth Science, SY23 3DB Aberystwyth, Wales, UK.
| | - William T Perkins
- Aberystwyth University, Institute of Geography and Earth Science, SY23 3DB Aberystwyth, Wales, UK
| | - Jones Sian
- Aberystwyth University, Institute of Biological, Environmental & Rural Sciences, SY23 3EE Aberystwyth, Wales, UK
| | - Damon Hammond
- Aberystwyth University, Institute of Biological, Environmental & Rural Sciences, SY23 3EE Aberystwyth, Wales, UK
| | - Edward M Hodgson
- Aberystwyth University, Institute of Biological, Environmental & Rural Sciences, SY23 3EE Aberystwyth, Wales, UK
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17
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Short-Chain Acid Additives to Control PbI2 Crystallization in Hybrid Perovskite Films. INORGANICS 2022. [DOI: 10.3390/inorganics10080114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The quality and the performance of hybrid perovskite (HP)’s films strongly depend on the complete conversion into MAPbI3 of a spin-coated solution of methylammonium iodide (MAI) and PbI2. Highly crystalline PbI2 on a substrate limits such a conversion and, consequently, the HP’s solar cell performances. We investigate for the first time the use of short-chain organic acids as additives in a non-complexing solvent like γ-butyrolactone (GBL), that can retard retard the crystallization of PbI2. Based on XRD analyses of the spin coated films, the acetic acid is the most effective additive in retarding the PbI2 crystallization, making Pb2+ available for a subsequent reaction with MAI. These results open a new experimental path for fabricating perovskite films by single or sequential step methods involving acid additives.
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18
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SPR-based assay kit for rapid determination of Pb2+. Anal Chim Acta 2022; 1220:340030. [DOI: 10.1016/j.aca.2022.340030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 06/01/2022] [Accepted: 06/02/2022] [Indexed: 11/17/2022]
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19
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State-of-the-Art Development in Liquid Crystal Biochemical Sensors. BIOSENSORS 2022; 12:bios12080577. [PMID: 36004973 PMCID: PMC9406035 DOI: 10.3390/bios12080577] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/23/2022] [Accepted: 07/26/2022] [Indexed: 12/31/2022]
Abstract
As an emerging stimuli-responsive material, liquid crystal (LC) has attracted great attentions beyond display applications, especially in the area of biochemical sensors. Its high sensitivity and fast response to various biological or chemical analytes make it possible to fabricate a simple, real-time, label-free, and cost-effective LC-based detection platform. Advancements have been achieved in the development of LC-based sensors, both in fundamental research and practical applications. This paper briefly reviews the state-of-the-art research on LC sensors in the biochemical field, from basic properties of LC material to the detection mechanisms of LC sensors that are categorized into LC-solid, LC–aqueous, and LC droplet platforms. In addition, various analytes detected by LCs are presented as a proof of the application value, including metal ions, nucleic acids, proteins, glucose, and some toxic chemical substances. Furthermore, a machine-learning-assisted LC sensing platform is realized to provide a foundation for device intelligence and automatization. It is believed that a portable, convenient, and user-friendly LC-based biochemical sensing device will be achieved in the future.
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20
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Glitscher EA, Bergueiro J, Calderón M. Synthesis and anisotropic growth of glycerol-based thermoresponsive NIR plasmonic nanogels. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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21
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Zubair M, Nazir M, Saleem M, Raiz N, Touseef S, Khan S, Zengin G, Ehsan Mazhar M, Imran Tousif M. Chemodiversity, Biological Activities and Molecular Docking Studies of Leptadenia pyrotechnica (Forssk.) Decne: A Comprehensive Approach to Validate Its Medicinal Use. Chem Biodivers 2022; 19:e202100884. [PMID: 35307950 DOI: 10.1002/cbdv.202100884] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 03/18/2022] [Indexed: 01/06/2023]
Abstract
Leptadenia pyrotechnica (Forssk.) Decne is growing in Cholistan desert, and is known for its laxative, analgesic, anabolic and astringent, antioxidant, anti-inflammatory, antibacterial, antitumor, hypolipidemic and antiatherosclerotic properties. The present study disclosed the metabolic picture of L. pyrotechnica and validates its folk uses. LP-H fraction constitute 25.79±0.11 mgGAE/g extract and 20.64±0.33 mgRE/g extract of phenolic and flavonoid content, respectively, followed by LP-E (23.15±0.33 mgGAE/g extract and 19.40±0.13 mgRE/g extract), however, LP-E exhibited the highest free radical scavenging (DPPH: 21.05±0.45mgTE/g and ABTS: 68.12±0.53 mgTE/g) and metal reducing (FRAP: 44.93±1.66, CUPRAC: 117.42±1.28 mgTE/g, respectively) activities. The total antioxidant capacity in Phosphomolybdenum assay (1.52±0.14 mmolTE/g) and ferrous ion chelating (11.57±0.29 mgEDTAE/g) activities were observed highest for LP-H extract. In cholinesterase's inhibitory assays, the LP-E and LP-W extracts exhibited inhibitory values as 2.43 and 2.40±0.07 mgGALAE/g extract, respectively against AChE, while against BChE the LP-H displayed the highest value as 5.98±0.44 mgGALAE/g extract. The LP-H fraction also showed the highest inhibition potential (7.72±0.14 mmol ACAE/g and 0.55±0.01 mmol ACAE/g, respectively) against α-glucosidase and α-amylase enzymes, while, in tyrosinase inhibitory assay, all the fractions exhibited significant activities in the range of 59.35±0.29 to 55.18±0.49 mgKAE/g extract. RP-UHPLC/MS analysis of LP-M disclosed the presence of 57 metabolites of various classes. A multivariate analysis and molecular docking study was also carried out to establish relationships between the metabolites and the biological activities, which finally validate the use of L. pyrotechnica as herbal medicine or component nutraceutical, food and cosmetic industry.
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Affiliation(s)
- Momina Zubair
- Division of Organic Chemistry, Institute of Chemistry, Baghdad-ul-Jadeed Campus, The Islamia University of Bahawalpur, 63100, Bahawalpur, Pakistan
| | - Mamona Nazir
- Department of Chemistry, Government Sadiq Women College University, Bahawalpur, 63100, Bahawalpur, Pakistan
| | - Muhammad Saleem
- Division of Organic Chemistry, Institute of Chemistry, Baghdad-ul-Jadeed Campus, The Islamia University of Bahawalpur, 63100, Bahawalpur, Pakistan
| | - Naheed Raiz
- Division of Organic Chemistry, Institute of Chemistry, Baghdad-ul-Jadeed Campus, The Islamia University of Bahawalpur, 63100, Bahawalpur, Pakistan
| | - Saba Touseef
- Dr. Panjwani Center for Molecular Medicine and Drug Research., International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Saima Khan
- Division of Organic Chemistry, Institute of Chemistry, Baghdad-ul-Jadeed Campus, The Islamia University of Bahawalpur, 63100, Bahawalpur, Pakistan
| | - Gokhan Zengin
- Selcuk University, Science Faculty, Department of Biology, Konya, Turkey
| | | | - Muhammad Imran Tousif
- Department of Chemistry, Division of Science and Technology, University of Education, Lahore, Pakistan
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22
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Kost B, Basko M, Bednarek M, Socka M, Kopka B, Łapienis G, Biela T, Kubisa P, Brzeziński M. The influence of the functional end groups on the properties of polylactide-based materials. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2022.101556] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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23
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Hung Wu B, Chun Chi S, Ming Chang C. Theoretical investigation of nano-adsorbents for removing antibiotics oxacillin and ciprofloxacin: a semiempirical PM7 study. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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24
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Alyani Nezhad Z, Geraily G, Parwaie W, Hossein Nezhad E. Evaluation of dose enhancement effect of bismuth oxide nanoparticles by means of MAGAT and nPAG gel dosimeters. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08242-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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25
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Ji C, Xu M, Yu H, Lv L, Zhang W. Mechanistic insight into selective adsorption and easy regeneration of carboxyl-functionalized MOFs towards heavy metals. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127684. [PMID: 34774352 DOI: 10.1016/j.jhazmat.2021.127684] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 10/15/2021] [Accepted: 10/30/2021] [Indexed: 06/13/2023]
Abstract
The development of heavy metal adsorbents with high selectivity has become a research hotspot due to the interference of coexisting ions (e.g., Na+, Ca2+) in the actual wastewater, but the more difficult regeneration caused by high adsorption selectivity severely limits its practical applications. Herein, a carboxyl adsorbent, MIL-121, demonstrated high adsorption selectivity for heavy metals at 10,000 mg/L of Na+ (removal > 99% for Cu2+) as well as unexpected easy regeneration (desorption > 99%) at low H+ concentration (10-3.5-10-3.0 M), which is hundreds of times lower than that of ever reported selective adsorbents (> 10-1 M H+). X-ray photoelectron spectrometry (XPS), extended X-ray absorption fine structure (EXAFS) coupled with Density functional theory (DFT) simulation unveil that the -COOH groups in MIL-121 for heavy metals adsorption is specific inner-sphere coordination with higher binding energy (1.31 eV for Cu), and less energy required for regeneration (0.26 eV for H). Similar high selectivity and easy regeneration were also satisfied with other heavy metals (e.g., Pb2+, Ni2+), and removal of heavy metals remained > 99% in 10 consecutive adsorption-desorption cycles. For actual copper electroplating wastewater treatment, MIL-121 could produce ~ 3600 mL clean water/g sample, outperforming 300 mL that of the benchmark commercial adsorbent D-113. This study shows the potential of MIL-121 for heavy metal wastewater treatment and provides mechanistic insight for developing adsorbents with high selective adsorption and easy regeneration.
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Affiliation(s)
- Chenghan Ji
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Mujian Xu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Hang Yu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Lu Lv
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China; Research Center for Environmental Nanotechnology (ReCENT), Nanjing University, Nanjing 210023, China
| | - Weiming Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China; Research Center for Environmental Nanotechnology (ReCENT), Nanjing University, Nanjing 210023, China; State Environmental Protection Engineering Center for Organic Chemical Wastewater Treatment and Resource Reuse, Nanjing 210046, China.
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26
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Xu Q, Zhang J, Li X, van Duin DM, Hu Y, van Duin ACT, Ma T. How Polytetrafluoroethylene Lubricates Iron: An Atomistic View by Reactive Molecular Dynamics. ACS APPLIED MATERIALS & INTERFACES 2022; 14:6239-6250. [PMID: 35049265 DOI: 10.1021/acsami.1c23950] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The tribochemistry and transfer film formation at the metal/polymer interface plays an essential role in surface protection, wear reduction, and lubrication. Although the topic has been studied for decades, challenges persist in clarifying the nanoscale mechanism and dynamic evolution of tribochemical reactions. To investigate the tribochemistry between iron and polytetrafluoroethylene (PTFE) in ambient and cryogenic environments, we have trained and expanded a ReaxFF reactive force field to describe iron-oxygen-water-PTFE systems (C/H/O/F/Fe). Using ReaxFF molecular dynamics simulations, we find that mechanical shearing of single asperity induced the degradation of PTFE molecules and radicals, showing subsequent oxidation and hydroxylation reactions of the radicals initiated by C-C bond cleavage, in agreement with previous experimental observations. Furthermore, we studied mechanisms of interfacial tribochemical reactions and formation of transfer films. We found that tribochemical wear and Fe-C and Fe-F bonding networks are important mechanisms for anchoring molecular chains to form a transfer film on the iron countersurface. Hydroxyl groups can dehydrogenate to form short and strong chelation bonds with the Fe2O3 countersurface. A friction-induced oriented molecular layer plays a key role in reducing friction, which is responsible for the excellent lubrication property. By varying temperatures in the range of 10-300 K, we found a nonmonotonic change in friction with a maxima at 100 K. At cryogenic temperatures, the molecular mobility was obviously suppressed, while the chain rigidity was enhanced, resulting in the less oriented interface and brittle-like shear interface, which is responsible for nonmonotonic friction. This work elucidates mechanisms of tribochemical reactions and transfer film formation between iron and PTFE at the atomistic level, facilitating design and development of self-lubricating materials, especially under harsh conditions.
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Affiliation(s)
- Qiang Xu
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
| | - Jie Zhang
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
| | - Xin Li
- School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Diana M van Duin
- RxFF_Consulting LLC, State College, Pennsylvania 16801, United States
| | - Yuanzhong Hu
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
| | - Adri C T van Duin
- RxFF_Consulting LLC, State College, Pennsylvania 16801, United States
- Department of Mechanical Engineering, Pennsylvania State University, University Park, State College, Pennsylvania 16802, United States
| | - Tianbao Ma
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
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27
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Zhao X, Xu J, Xie D, Wang Z, Xu H, Lin Y, Hu J, Liu Y. Natural Acidic Polysaccharide-Based Memristors for Transient Electronics: Highly Controllable Quantized Conductance for Integrated Memory and Nonvolatile Logic Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2104023. [PMID: 34958496 DOI: 10.1002/adma.202104023] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 09/02/2021] [Indexed: 06/14/2023]
Abstract
As a leading candidate for further memory and computing applications, memristors are being developed in an important direction of transient electronics. Herein, wafer-scale acidic polysaccharide thin films are reported as promising materials for memristors with remarkable transient characteristics. The memristor shows freestanding and lightweight features, and can be fully dissolved in deionized water within 3.5 s. More importantly, the ion-confinement capability of acidic polysaccharides where the cations can interact with the ionizable acid groups enables atomic manipulation of conductive filament. As a result, (i) a single device can produce 16 highly controllable and independent quantized conductance (QC) states with quasi-nonvolatile and nonvolatile characteristics and (ii) QC switching can be performed with ultrafast speed (2-5 ns) and low energy consumption (0.6-16 pJ). These remarkable features make the memristor promising for fast, low-power, and high-density memory and computing applications. Based on QC switching, the encoding/decoding and nonvolatile basic Boolean logic are designed and implemented. More importantly, "stateful" material implication logic which is promising for future in-memory computing is demonstrated with QC switching. These results significantly advance acidic polysaccharides to develop nanodevices with quantum effects.
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Affiliation(s)
- Xiaoning Zhao
- Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education Northeast Normal University, Changchun, 130024, China
| | - Jiaqi Xu
- Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education Northeast Normal University, Changchun, 130024, China
| | - Dan Xie
- Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education Northeast Normal University, Changchun, 130024, China
| | - Zhongqiang Wang
- Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education Northeast Normal University, Changchun, 130024, China
| | - Haiyang Xu
- Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education Northeast Normal University, Changchun, 130024, China
| | - Ya Lin
- Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education Northeast Normal University, Changchun, 130024, China
| | - Junli Hu
- Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education Northeast Normal University, Changchun, 130024, China
| | - Yichun Liu
- Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education Northeast Normal University, Changchun, 130024, China
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28
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Walden K, Martin ME, LaBee L, Provorse Long M. Hydration and Charge-Transfer Effects of Alkaline Earth Metal Ions Binding to a Carboxylate Anion, Phosphate Anion, and Guanine Nucleobase. J Phys Chem B 2021; 125:12135-12146. [PMID: 34706195 DOI: 10.1021/acs.jpcb.1c05757] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
To investigate the ability of alkaline earth metal ions to tune ion-mediated DNA adsorption, hydrated Mg2+, Ca2+, Sr2+, and Ba2+ ions bound to a carboxylate anion, phosphate anion, and guanine nucleobase were modeled using density functional theory (DFT) and a combined explicit and continuum solvent model. The large first solvation shell of Ba2+ requires a larger solute cavity defined by a solvent-accessible surface, which is used to model all hydrated ions. Alkaline earth metal ions bind indirectly or directly to each binding site. DFT binding energies decrease with increasing ion size, which is likely due to ion size and hydration structure, rather than quantum effects such as charge transfer. However, charge transfer explains weaker ion binding to guanine compared to phosphate or carboxylate. Overall, carboxylate and phosphate anions are expected to compete equally for hydrated Mg2+, Ca2+, Sr2+, and Ba2+ ions and larger alkaline earth metal ions may induce weaker ion-mediated adsorption. The ion size and hydration structure of alkaline earth metal ions may effectively tune ion-mediated adsorption processes, such as DNA adsorption to functionalized surfaces.
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Affiliation(s)
- Kathryn Walden
- Department of Chemistry, University of Central Arkansas, Conway, Arkansas 72035, United States
| | - Madison E Martin
- Department of Chemistry, University of Central Arkansas, Conway, Arkansas 72035, United States
| | - Lacey LaBee
- Department of Chemistry, University of Central Arkansas, Conway, Arkansas 72035, United States
| | - Makenzie Provorse Long
- Department of Chemistry, University of Central Arkansas, Conway, Arkansas 72035, United States
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29
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Yao S, Brahmi R, Portier F, Putaux JL, Chen J, Halila S. Hierarchical Self-Assembly of Amphiphilic β-C-Glycosylbarbiturates into Multiresponsive Alginate-Like Supramolecular Hydrogel Fibers and Vesicle Hydrogel. Chemistry 2021; 27:16716-16721. [PMID: 34622999 DOI: 10.1002/chem.202102950] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Indexed: 01/03/2023]
Abstract
Ordered molecular self-assembly of glycoamphiphiles has been regarded as an attractive, practical and bottom-up approach to obtain stable, structurally well-defined, and functional mimics of natural polysaccharides. This study describes a versatile and rational design of carbohydrate-based hydrogelators through N,N'-substituted barbituric acid-mediated Knoevenagel condensation onto unprotected carbohydrates in water. Amphiphilic N-substituted β-C-maltosylbarbiturates self-assembled into pH- and calcium-triggered alginate-like supramolecular hydrogel fibers with a multistimuli responsiveness to temperature, pH and competitive metal chelating agent. In addition, amphiphilic N,N'-disubstituted β-C-maltosylbarbiturates formed vesicle gels in pure water that were scarcely observed for glyco-hydrogelators. Finally, barbituric acid worked as a multitasking group allowing chemoselective ligation onto reducing-end carbohydrates, structural diversity, stimuli-sensitiveness, and supramolecular interactions by hydrogen bonding.
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Affiliation(s)
- Shun Yao
- Univ. Grenoble Alpes, CNRS, CERMAV, 38000, Grenoble, France
| | - Robin Brahmi
- Univ. Grenoble Alpes, CNRS, CERMAV, 38000, Grenoble, France
| | | | | | - Jing Chen
- Zhejiang International Scientific and, Technological Cooperative Base of Biomedical Materials and Technology, Zhejiang Engineering Research Center for Biomedical Materials, Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315300, P. R. China
| | - Sami Halila
- Univ. Grenoble Alpes, CNRS, CERMAV, 38000, Grenoble, France
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30
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Stirchak L, Donaldson DJ. Relating natural organic matter conformation, metal complexation, and photophysics. CAN J CHEM 2021. [DOI: 10.1139/cjc-2021-0018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We investigated the relationship between changes in fluorescence intensity and in fluorescence anisotropy for Suwannee River Natural Organic Matter (SRNOM) due to the formation of NOM-metal complexes with divalent and trivalent metals commonly present in both fresh water and sea water environments. We chose metal ions whose complexes give rise to both fluorescence quenching (Fe3+, Cu2+) and fluorescence enhancement (Al3+, Mg2+). Stern–Volmer type analyses quantified the changes in the SRNOM fluorescence as a function of metal concentration. All metals display strong complexation with SRNOM, associated with their effect on fluorescence. Experiments with Fe3+ further show strong effects due to NOM aggregation at all but the lowest metal concentrations studied here. There was little to no change in the conformation of SRNOM as inferred from fluorescence anisotropy caused by increasing metal concentration. These results suggest that there is no correlation between photophysical changes and conformational changes in NOM associated with complexation by the metal ions.
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Affiliation(s)
- Laura Stirchak
- Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON M5S 3H6, Canada
| | - D. James Donaldson
- Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON M5S 3H6, Canada
- Department of Physical and Environmental Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON M1C 1A4, Canada
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31
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Green synthesis of carbon dots for ultrasensitive detection of Cu2+ and oxalate with turn on-off-on pattern in aqueous medium and its application in cellular imaging. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113443] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Panwar V, Babu A, Sharma A, Thomas J, Chopra V, Malik P, Rajput S, Mittal M, Guha R, Chattopadhyay N, Mandal D, Ghosh D. Tunable, conductive, self-healing, adhesive and injectable hydrogels for bioelectronics and tissue regeneration applications. J Mater Chem B 2021; 9:6260-6270. [PMID: 34338263 DOI: 10.1039/d1tb01075a] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Conductive hydrogels are attracting considerable interest in view of their potential in a wide range of applications that include healthcare and electronics. Such hydrogels are generally incorporated with conductive materials/polymers. Herein, we present a series of conductive hydrogels (Ch-CMC-PDA), prepared with no additional conductive material. The hydrogels were synthesized using a combination of chitosan, cellulose (CMC) and dopamine (DA). The conductivity (0.01-3.4 × 10-3 S cm-1) in these gels is attributed to ionic conductivity. Very few conductive hydrogels are endowed with additional properties like injectability, adhesiveness and self-healing, which would help to widen their scope for applications. While the dynamic Schiff base coupling in our hydrogels facilitated self-healing and injectable properties, polydopamine imparted tissue adhesiveness. The porosity, rheological, mechanical and conductive properties of the hydrogels are regulated by the CMC-dialdehyde-polydopamine (CMC-D-PDA) content. The hydrogel was evaluated in various bioelectronics applications like ECG monitoring and triboelectric nanogenerators (TENG). The ability of the hydrogel to support cell growth and serve as a template for tissue regeneration was confirmed using in vitro and in vivo studies. In summary, the integration of such remarkable features in the ionic-conductive hydrogel would enable its usage in bioelectronics and biomedical applications.
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Affiliation(s)
- Vineeta Panwar
- Chemical Biology Unit, Institute of Nano Science and Technology, Sector-81, Mohali-140306, Punjab, India.
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Aldakkan BS, Hammami MA, Qi G, Kanj MY, Giannelis EP. Stimuli-Responsive, Hydrolyzable Poly(Vinyl Laurate- co-vinyl Acetate) Nanoparticle Platform for In Situ Release of Surfactants. ACS APPLIED MATERIALS & INTERFACES 2021; 13:25553-25562. [PMID: 34006101 DOI: 10.1021/acsami.1c04977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A stimuli-responsive, sub-100 nm nanoparticle (NP) platform with a hydrolyzable ester side chain for in situ generation of surfactants is demonstrated. The NPs were synthesized via copolymerization of vinyl-laurate and vinyl-acetate [p-(VL-co-VA), 3:1 molar ratio] and stabilized with a protective poly(ethylene-glycol) shell. The NPs are ∼55 nm in diameter with a zeta potential of -54 mV. Hydrolysis kinetics in an accelerated, base-catalyzed reaction show release of about 11 and 30% of the available surfactant at 25 and 80 °C, respectively. The corresponding values in seawater are 22 and 76%. The efficiency of the released surfactant in reducing the interfacial tension, altering wettability, and stabilizing oil-water emulsion was investigated through contact angle measurements and laser confocal scanning microscopy and benchmarked to sodium laurate, a commercially available surfactant. All these measurements demonstrate both the efficacy of the NP system for surfactant delivery and the ability of the released surfactant to alter wettability and stabilize an oil-water emulsion.
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Affiliation(s)
- Bashayer S Aldakkan
- Department of Materials Science and Engineering, Cornell University, Ithaca 14850, New York, United States
| | - Mohamed A Hammami
- Department of Materials Science and Engineering, Cornell University, Ithaca 14850, New York, United States
| | - Genggeng Qi
- Department of Materials Science and Engineering, Cornell University, Ithaca 14850, New York, United States
| | - Mazen Y Kanj
- College of Petroleum Engineering & Geosciences, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Emmanuel P Giannelis
- Department of Materials Science and Engineering, Cornell University, Ithaca 14850, New York, United States
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34
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A minimized fluorescent chemosensor array utilizing carboxylate-attached polythiophenes on a chip for metal ions detection. Front Chem Sci Eng 2021. [DOI: 10.1007/s11705-021-2037-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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35
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Badsha MAH, Khan M, Wu B, Kumar A, Lo IMC. Role of surface functional groups of hydrogels in metal adsorption: From performance to mechanism. JOURNAL OF HAZARDOUS MATERIALS 2021; 408:124463. [PMID: 33189468 DOI: 10.1016/j.jhazmat.2020.124463] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 10/10/2020] [Accepted: 10/31/2020] [Indexed: 05/27/2023]
Abstract
Hydrogels have been studied quite intensively in recent decades regarding whether their metal adsorption abilities may be modified or even enhanced via functionalization (i.e., functionalizing the surfaces of hydrogels with specific functional groups). Studies have found that functionalizing hydrogels can in fact give them higher adsorptive power. This enhanced adsorptive performance is articulated in this paper through critically reviewing more than 120 research articles in such terms as the various techniques of synthesizing functionalized hydrogels, the roles that specific functional groups play on adsorption performance, selectivity, reusability, as well as on adsorption mechanism. Moreover, this critical review offers insight into future designs of functionalized hydrogels with specific metal adsorption capabilities.
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Affiliation(s)
- Mohammad A H Badsha
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Musharib Khan
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Baile Wu
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Ashutosh Kumar
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Irene M C Lo
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China; Institute for Advanced Study, The Hong Kong University of Science and Technology, Hong Kong, China.
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36
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Soltani R, Pelalak R, Pishnamazi M, Marjani A, Shirazian S. A water-stable functionalized NiCo-LDH/MOF nanocomposite: green synthesis, characterization, and its environmental application for heavy metals adsorption. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103052] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
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37
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Gonçalves IK, Oliveira WX, de Almeida FB, Marinho MV, do Pim WD, Silva-Caldeira PP. The versatile coordination chemistry of 1,3-benzenedicarboxylate in the last 20 years: An investigation from the coordination modes to spectroscopic insights. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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38
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Deng Z, Pei Y, Wang S, Zhou B, Hou X, Li J, Li B, Liang H. Designable Carboxymethylpachymaran/Metal Ion Architecture on Sunflower Sporopollenin Exine Capsules as Delivery Vehicles for Bioactive Macromolecules. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:13990-14000. [PMID: 33174430 DOI: 10.1021/acs.jafc.0c05169] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
There are multiple obstacles in the gastrointestinal tract (GIT) for oral administration of bioactive macromolecules. Here, we engineered an oral delivery vehicle (sporopollenin exine capsules with carboxymethylpachymaran (CMP)/metal ion modification) with targeted release based on food-grade ingredients and processing operations. Then, the interaction and binding mechanisms between CMP and metal ions in the vehicle were investigated. By using β-galactosidase (β-Gal) as a model protein, the systems were characterized for the surface morphology and monitored by the in vitro release profile of β-Gal. Notably, the CMP/metal ion systems not only markedly decreased the CMP dosage but also achieved a valid long-term release compared with the previously reported CMP system. Among all the systems, the CMP/3% AlCl3 system showed the best ability to control the release with the maximum residual activity of β-Gal at nearly 72% after 24 h of treatment. Subsequently, the interaction mechanism between CMP and metal ions within the system was characterized by the perspectives of microstructure, rheological properties, and spectroscopy characteristics. The results indicated that the low pH conditions are conducive to the further cross-linking of CMP and metal ions, resulting in a high gel strength and thus a dense structure, which can impact the controlled release of β-Gal in the GIT. Overall, the system may be utilized in the administration of medical and functional foods, specifically for the delivery of bioactive proteins via the oral route.
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Affiliation(s)
- Ziyu Deng
- College of Food Science and Technology, Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China; China
| | - Yaqiong Pei
- College of Culinary and Food Engineering, Wuhan Business University, Wuhan 430056, China
| | - Shishuai Wang
- College of Culinary and Food Engineering, Wuhan Business University, Wuhan 430056, China
| | - Bin Zhou
- Key Laboratory of Fermentation Engineering, Ministry of Education; National "111" Center for Cellular Regulation and Molecular Pharmaceutics; Hubei Key Laboratory of Industrial Microbiology; School of Biological Engineering and Food, Hubei University of Technology, Wuhan 430068, China
| | - Xinyao Hou
- College of Food Science and Technology, Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China; China
| | - Jing Li
- College of Food Science and Technology, Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China; China
| | - Bin Li
- College of Food Science and Technology, Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China; China
- Functional Food Engineering & Technology Research Center of Hubei Province, Wuhan 430068, China
| | - Hongshan Liang
- College of Food Science and Technology, Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China; China
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39
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Kim YJ, Park SY. Optical Multisensor Array with Functionalized Photonic Droplets by an Interpenetrating Polymer Network for Human Blood Analysis. ACS APPLIED MATERIALS & INTERFACES 2020; 12:47342-47354. [PMID: 33030883 DOI: 10.1021/acsami.0c15718] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Photonic solid-state cholesteric liquid crystal (CLCsolid) droplets intertwined with a poly(acrylic acid) (PAA) network that has an interpenetrating polymer network (IPN) structure (referred to as photonic IPN CLCsolid-PAA droplets) were used as individual sensors in the dots of a PAA-patterned array film after functionalization via immobilization of the receptors and a metal-ion treatment. The photonic IPN CLCsolid-PAA droplets in the PAA-patterned array film were pH-responsive and showed an observable change in the reflected central color. This "smart" property, coupled with the photonic color response, makes these devices ideal photonic sensors. The immobilization of urease and phenylboronic acid on the PAA network allowed for the application of several 10 μm photonic IPN CLCsolid-PAA droplets to the optical photonic biosensors through facilitated volumetric changes in the PAA network in response to urea and glucose analytes, with high selectivity for major components in human serum, acceptable sensitivity for use with human serum, and extreme stability due to a solid-state structure. The blueshift of the reflected color of the KOH-treated photonic IPN CLCsolid-PAA droplets could be used for divalent metal-ion detection. The compartmentalized photonic IPN CLCsolid-PAA droplets in the patterned array film could be used for multiple detection applications, as evidenced by the ability to conduct pH, divalent metal ion, urea, and glucose detections in one patterned array film. This new platform opens the door for many interesting applications with numerous combinations of responsive hydrogel matrices and receptors.
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Affiliation(s)
- Ye-Ji Kim
- School of Applied Chemical Engineering, Polymeric Nano Materials Laboratory, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Soo-Young Park
- School of Applied Chemical Engineering, Polymeric Nano Materials Laboratory, Kyungpook National University, Daegu 41566, Republic of Korea
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40
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Collation Efficiency of Poly(Vinyl Alcohol) and Alginate Membranes with Iron-Based Magnetic Organic/Inorganic Fillers in Pervaporative Dehydration of Ethanol. MATERIALS 2020; 13:ma13184152. [PMID: 32961950 PMCID: PMC7560291 DOI: 10.3390/ma13184152] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/12/2020] [Accepted: 09/15/2020] [Indexed: 11/23/2022]
Abstract
Hybrid poly(vinyl alcohol) and alginate membranes were investigated in the process of ethanol dehydration by pervaporation. As a filler, three types of particles containing iron element, i.e., hematite, magnetite, and iron(III) acetyloacetonate were used. The parameters describing transport properties and effectiveness of investigated membranes were evaluated. Additionally, the physico-chemical properties of the resulting membranes were studied. The influence of polymer matrix, choice of iron particles and their content in terms of effectiveness of membranes in the process of ethanol dehydration were considered. The results showed that hybrid alginate membranes were characterized by a better separation factor, while poly(vinyl alcohol) membranes by a better flux. The best parameters were obtained for membranes filled with 7 wt% of iron(III) acetyloacetonate. The separation factor and pervaporative separation index were equal to 19.69 and 15,998 g⋅m−2⋅h−1 for alginate membrane and 11.75 and 14,878 g⋅m−2⋅h−1 for poly(vinyl alcohol) membrane, respectively.
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Tsuchiya H, Sinawang G, Asoh TA, Osaki M, Ikemoto Y, Higuchi Y, Yamaguchi H, Harada A, Uyama H, Takashima Y. Supramolecular Biocomposite Hydrogels Formed by Cellulose and Host-Guest Polymers Assisted by Calcium Ion Complexes. Biomacromolecules 2020; 21:3936-3944. [PMID: 32809809 DOI: 10.1021/acs.biomac.0c01095] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Hydrogels are biocompatible polymer networks; however, they have the disadvantage of having poor mechanical properties. Herein, the mechanical properties of host-guest hydrogels were increased by adding a filler and incorporating other noncovalent interactions. Cellulose was added as a filler to the hydrogels to afford a composite. Citric acid-modified cellulose (CAC) with many carboxyl groups was used instead of conventional cellulose. The preparation began with mixing an acrylamide-based αCD host polymer (p-αCD) and a dodecanoic acid guest polymer (p-AADA) to form supramolecular hydrogels (p-αCD/p-AADA). However, when CAC was directly added to p-αCD/p-AADA to form biocomposite hydrogels (p-αCD/p-AADA/CAC), it showed weaker mechanical properties than p-αCD/p-AADA itself. This was caused by the strong intramolecular hydrogen bonding (H-bonding) within the CAC, which prevented the CAC reinforcing p-αCD/p-AADA in p-αCD/p-AADA/CAC. Then, calcium chloride solution (CaCl2) was used to form calcium ion (Ca2+) complexes between the CAC and p-αCD/p-AADA. This approach successfully created supramolecular biocomposite hydrogels assisted by Ca2+ complexes (p-αCD/p-AADA/CAC/Ca2+) with improved mechanical properties relative to p-αCD/p-AADA hydrogels; the toughness was increased 6-fold, from 1 to 6 MJ/m3. The mechanical properties were improved because of the disruption of the intramolecular H-bonding within the CAC by Ca2+ and subsequent complex formation between the carboxyl groups of CAC and p-AADA. This mechanism is a new approach for improving the mechanical properties of hydrogels that can be broadly applied as biomaterials.
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Affiliation(s)
- Hinako Tsuchiya
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Garry Sinawang
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.,Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Taka-Aki Asoh
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Motofumi Osaki
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.,Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Yuka Ikemoto
- Japan Synchrotron Radiation Research Institute (SPring-8), 1-1-1 Kouto, Mikazuki-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Yuji Higuchi
- Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - Hiroyasu Yamaguchi
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.,Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Akira Harada
- Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.,The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Hiroshi Uyama
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yoshinori Takashima
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.,Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.,Institute for Advanced Co-Creation Studies, Osaka University, 1-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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Ma Y, Sikdar D, He Q, Kho D, Kucernak AR, Kornyshev AA, Edel JB. Self-assembling two-dimensional nanophotonic arrays for reflectivity-based sensing. Chem Sci 2020; 11:9563-9570. [PMID: 34094221 PMCID: PMC8161679 DOI: 10.1039/d0sc02877k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
We propose a nanoplasmonic platform that can be used for sensing trace levels of heavy metals in solutions via simple optical reflectivity measurements. The considered example is a lead sensor, which relies on the lead-mediated assembly of glutathione-functionalized gold nanoparticles (NPs) at a self-healing water/DCE liquid | liquid interface (LLI). Capillary forces tend to trap each NP at the LLI while the negatively charged ligands prevent the NPs settling too close to each other. In the presence of lead, due to chelation between the lead ion and glutathione ligand, the NPs assemble into a dense quasi-2D interfacial array. Such a dense assembly of plasmonic NPs can generate a remarkable broad-band reflectance signal, which is absent when NPs are adsorbed at the interface far apart from each other. The condensing effect of the LLI and the plasmonic coupling effect among the NP array gives rise to a dramatic enhancement of the reflectivity signals. Importantly, we show that our theory of the optical reflectivity from such an array of NPs works in perfect harmony with the physics and chemistry of the system with the key parameter being the interparticle distance at the interface. As a lead sensor, the system is fast, stable, and can achieve detection limits down to 14 ppb. Future alternative recognizing ligands can be used to build sister platforms for detecting other heavy metals. We propose a nanoplasmonic platform that can be used for sensing trace levels of heavy metals in solutions via simple optical reflectivity measurements at the liquid–liquid interface.![]()
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Affiliation(s)
- Ye Ma
- Department of Chemistry, Imperial College London, Molecular Science Research Hub, White City Campus 80 Wood Lane W12 0BZ UK .,School of Materials Science and Engineering, Ocean University of China Qingdao 266100 China
| | - Debabrata Sikdar
- Department of Chemistry, Imperial College London, Molecular Science Research Hub, White City Campus 80 Wood Lane W12 0BZ UK .,Department of Electronics and Electrical Engineering, Indian Institute of Technology Guwahati Guwahati-781039 India
| | - Qian He
- Key Lab of Marine Chemistry Theory & Technology, Ministry Education, Ocean University of China Qingdao 266100 China
| | - Daniel Kho
- Department of Chemistry, Imperial College London, Molecular Science Research Hub, White City Campus 80 Wood Lane W12 0BZ UK
| | - Anthony R Kucernak
- Department of Chemistry, Imperial College London, Molecular Science Research Hub, White City Campus 80 Wood Lane W12 0BZ UK
| | - Alexei A Kornyshev
- Department of Chemistry, Imperial College London, Molecular Science Research Hub, White City Campus 80 Wood Lane W12 0BZ UK
| | - Joshua B Edel
- Department of Chemistry, Imperial College London, Molecular Science Research Hub, White City Campus 80 Wood Lane W12 0BZ UK
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Yang S, Peng L, Syzgantseva OA, Trukhina O, Kochetygov I, Justin A, Sun DT, Abedini H, Syzgantseva MA, Oveisi E, Lu G, Queen WL. Preparation of Highly Porous Metal–Organic Framework Beads for Metal Extraction from Liquid Streams. J Am Chem Soc 2020; 142:13415-13425. [DOI: 10.1021/jacs.0c02371] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Shuliang Yang
- Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Rue de l’Industrie 17, CH-1951 Sion, Switzerland
| | - Li Peng
- Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Rue de l’Industrie 17, CH-1951 Sion, Switzerland
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Olga A. Syzgantseva
- Laboratory of Molecular Simulation (LSMO), Institut des Sciences et Ingénierie Chimiques, Valais, Ecole Polytechnique Fédérale de Lausanne (EPFL), Rue de l’Industrie 17, CH-1951 Sion, Switzerland
- Laboratory of Quantum Photodynamics, Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia
| | - Olga Trukhina
- Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Rue de l’Industrie 17, CH-1951 Sion, Switzerland
| | - Ilia Kochetygov
- Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Rue de l’Industrie 17, CH-1951 Sion, Switzerland
| | - Anita Justin
- Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Rue de l’Industrie 17, CH-1951 Sion, Switzerland
| | - Daniel T. Sun
- Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Rue de l’Industrie 17, CH-1951 Sion, Switzerland
| | - Hassan Abedini
- Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Rue de l’Industrie 17, CH-1951 Sion, Switzerland
- Department of Gas Engineering, Ahvaz Faculty of Petroleum, Petroleum University of Technology, Ahvaz, Iran
| | - Maria A. Syzgantseva
- Laboratory of Quantum Mechanics and Molecular Structure, Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia
| | - Emad Oveisi
- Interdiciplinary Center for Electron Microscopy, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Guanchu Lu
- Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Rue de l’Industrie 17, CH-1951 Sion, Switzerland
- School of Engineering, The University of Edinburgh, The King’s Buildings, Edinburgh EH9 3JL, United Kindom
| | - Wendy L. Queen
- Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Rue de l’Industrie 17, CH-1951 Sion, Switzerland
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Xu X, Wang N, Wu M, Wang J, Wang D, Chen Z, Xie J, Ding C, Li J. Programmed antibacterial and mineralization therapy for dental caries based on zinc-substituted hydroxyapatite/ alendronate-grafted polyacrylic acid hybrid material. Colloids Surf B Biointerfaces 2020; 194:111206. [PMID: 32585534 DOI: 10.1016/j.colsurfb.2020.111206] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 06/15/2020] [Accepted: 06/16/2020] [Indexed: 02/08/2023]
Abstract
The domination of cariogenic bacteria in dental plaque biofilms is the primary cause of dental caries. In view of this, for the purpose of an effective treatment of dental caries, it is of great importance to inhibit the activity of acidogenic bacteria and promote the remineralization of damaged teeth simultaneously. However, the expensive antibacterial agents and poor mineralization ability of materials limit the practical applications. Biomineralization regulated by non-collagenous proteins (NCPs) gives hints to combine the remineralization ability of NCPs with accessible antibacterial property effectively. In this work, we propose a programmed antibacterial and remineralization strategy for the therapy of dental caries based on zinc-substituted hydroxyapatite/ alendronate-grafted polyacrylic acid hybrid nanoneedles (ZHA@ALN-PAA). This hybrid material dissolves in the acidic caries environment and regulate the pH to nearly neutral (6.5). Abundant calcium/ phosphate ions are supplemented and the ALN-PAA embedded in it has also been released, which assists the biomineralization on tooth defect. It has been revealed that the inhibition ratio of ZHA@ALN-PAA against Streptococcus mutans is the highest (11.25 folds that of HA), which originates from the highest zinc ions released (132.9 mg/L). Besides, the interspace of etched enamel is fully filled with regenerated nanorods and the surface microhardness (SMH) is significantly improved (3.68 folds that of etched enamel) after only 3 days of mineralization in vitro. This strategy developed here is simple and cost-effective, which can be referred to design the effective anti-caries materials applied for clinic treatment and daily oral care.
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Affiliation(s)
- Xiaoyang Xu
- College of Polymer Science and Engineering, Sichuan University, Chengdu, China
| | - Nan Wang
- College of Polymer Science and Engineering, Sichuan University, Chengdu, China
| | - Mingzhen Wu
- College of Polymer Science and Engineering, Sichuan University, Chengdu, China
| | - Jie Wang
- College of Polymer Science and Engineering, Sichuan University, Chengdu, China
| | - Dingqian Wang
- College of Polymer Science and Engineering, Sichuan University, Chengdu, China
| | - Zhuoxin Chen
- College of Polymer Science and Engineering, Sichuan University, Chengdu, China
| | - Jing Xie
- College of Polymer Science and Engineering, Sichuan University, Chengdu, China
| | - Chunmei Ding
- College of Polymer Science and Engineering, Sichuan University, Chengdu, China.
| | - Jianshu Li
- College of Polymer Science and Engineering, Sichuan University, Chengdu, China; State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China; State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
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45
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Parra-Rivero O, Paes de Barros M, Prado MDM, Gil JV, Hornero-Méndez D, Zacarías L, Rodrigo MJ, Limón MC, Avalos J. Neurosporaxanthin Overproduction by Fusarium fujikuroi and Evaluation of Its Antioxidant Properties. Antioxidants (Basel) 2020; 9:E528. [PMID: 32560158 PMCID: PMC7346100 DOI: 10.3390/antiox9060528] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 06/11/2020] [Accepted: 06/12/2020] [Indexed: 11/16/2022] Open
Abstract
Neurosporaxanthin (NX) is a carboxylic carotenoid produced by some filamentous fungi, including species of the genera Neurospora and Fusarium. NX biosynthetic genes and their regulation have been thoroughly investigated in Fusarium fujikuroi, an industrial fungus used for gibberellin production. In this species, carotenoid-overproducing mutants, affected in the regulatory gene carS, exhibit an upregulated expression of the NX pathway. Based on former data on a stimulatory effect of nitrogen starvation on carotenoid biosynthesis, we developed culture conditions with carS mutants allowing the production of deep-pigmented mycelia. With this method, we obtained samples with ca. 8 mg NX/g dry mass, in turn the highest concentration for this carotenoid described so far. NX-rich extracts obtained from these samples were used in parallel with carS-complemented NX-poor extracts obtained under the same conditions, to check the antioxidant properties of this carotenoid in in vitro assays. NX-rich extracts exhibited higher antioxidant capacity than NX-poor extracts, either when considering their quenching activity against [O2(1g)] in organic solvent (singlet oxygen absorption capacity (SOAC) assays) or their scavenging activity against different free radicals in aqueous solution and in liposomes. These results make NX a promising carotenoid as a possible feed or food additive, and encourage further studies on its chemical properties.
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Affiliation(s)
- Obdulia Parra-Rivero
- Department of Genetics, Faculty of Biology, University of Seville, 41012 Seville, Spain; (O.P.-R.); (M.d.M.P.); (M.C.L.)
| | - Marcelo Paes de Barros
- Department of Food Biotechnology, Institute of Agrochemistry and Food Technology (IATA-CSIC), 46980 Valencia, Spain; (M.P.d.B.); (J.-V.G.); (L.Z.); (M.J.R.)
- Interdisciplinary Program in Health Sciences, Institute of Physical Activity Sciences and Sports (ICAFE), Cruzeiro do Sul University, Rua Galvão Bueno 868, São Paulo SP 01506-000, Brazil
| | - María del Mar Prado
- Department of Genetics, Faculty of Biology, University of Seville, 41012 Seville, Spain; (O.P.-R.); (M.d.M.P.); (M.C.L.)
| | - José-Vicente Gil
- Department of Food Biotechnology, Institute of Agrochemistry and Food Technology (IATA-CSIC), 46980 Valencia, Spain; (M.P.d.B.); (J.-V.G.); (L.Z.); (M.J.R.)
- Food Technology Area, Faculty of Pharmacy, University of Valencia, Burjassot, 46100 Valencia, Spain
| | - Dámaso Hornero-Méndez
- Department of Food Phytochemistry, Instituto de la Grasa (IG-CSIC), 41013 Seville, Spain;
| | - Lorenzo Zacarías
- Department of Food Biotechnology, Institute of Agrochemistry and Food Technology (IATA-CSIC), 46980 Valencia, Spain; (M.P.d.B.); (J.-V.G.); (L.Z.); (M.J.R.)
| | - María J. Rodrigo
- Department of Food Biotechnology, Institute of Agrochemistry and Food Technology (IATA-CSIC), 46980 Valencia, Spain; (M.P.d.B.); (J.-V.G.); (L.Z.); (M.J.R.)
| | - M. Carmen Limón
- Department of Genetics, Faculty of Biology, University of Seville, 41012 Seville, Spain; (O.P.-R.); (M.d.M.P.); (M.C.L.)
| | - Javier Avalos
- Department of Genetics, Faculty of Biology, University of Seville, 41012 Seville, Spain; (O.P.-R.); (M.d.M.P.); (M.C.L.)
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46
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Moon KM, Kwon EB, Lee B, Kim CY. Recent Trends in Controlling the Enzymatic Browning of Fruit and Vegetable Products. Molecules 2020; 25:molecules25122754. [PMID: 32549214 PMCID: PMC7355983 DOI: 10.3390/molecules25122754] [Citation(s) in RCA: 153] [Impact Index Per Article: 38.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/12/2020] [Accepted: 06/12/2020] [Indexed: 02/08/2023] Open
Abstract
Enzymatic browning because of polyphenol oxidases (PPOs) contributes to the color quality of fruit and vegetable (FV) products. Physical and chemical methods have been developed to inhibit the activity of PPOs, and several synthetic chemical compounds are commonly being used as PPO inhibitors in FV products. Recently, there has been an emphasis on consumer-oriented innovations in the food industry. Consumers tend to urge the use of natural and environment-friendly PPO inhibitors. The purpose of this review is to summarize the mechanisms underlying the anti-browning action of chemical PPO inhibitors and current trends in the research on these inhibitors. Based on their mechanisms of action, chemical inhibitors can be categorized as antioxidants, reducing agents, chelating agents, acidulants, and/or mixed-type PPO inhibitors. Here, we focused on the food ingredients, dietary components, food by-products, and waste associated with anti-browning activity.
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Affiliation(s)
- Kyoung Mi Moon
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 660-701, Korea;
| | - Eun-Bin Kwon
- Korean Medicine (KM) Application Center, Korea Institute of Oriental Medicine (KIOM), Dong-gu, Deagu 701-300, Korea;
| | - Bonggi Lee
- Department of Food Science and Nutrition, Pukyong National University, Nam-gu, Daeyeon Dong, Busan 608737, Korea
- Correspondence: (B.L.); (C.Y.K.); Tel.: +82-51-629-5852 (B.L.); +82-53-810-2871 (C.Y.K.)
| | - Choon Young Kim
- Department of Food and Nutrition, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Korea
- Correspondence: (B.L.); (C.Y.K.); Tel.: +82-51-629-5852 (B.L.); +82-53-810-2871 (C.Y.K.)
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47
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Gnanasekaran K, Chang H, Smeets PJM, Korpanty J, Geiger FM, Gianneschi NC. In Situ Ni 2+ Stain for Liposome Imaging by Liquid-Cell Transmission Electron Microscopy. NANO LETTERS 2020; 20:4292-4297. [PMID: 32453587 DOI: 10.1021/acs.nanolett.0c00898] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Solvated soft matter, both biological and synthetic, can now be imaged in liquids using liquid-cell transmission electron microscopy (LCTEM). However, such systems are usually composed solely of organic molecules (low Z elements) producing low contrast in TEM, especially within thick liquid films. We aimed to visualize liposomes by LCTEM rather than requiring cryogenic TEM (cryoTEM). This is achieved here by imaging in the presence of aqueous metal salt solutions. The increase in scattering cross-section by the cation gives a staining effect that develops in situ, which could be captured by real space TEM and verified by in situ energy dispersive x-ray spectroscopy (EDS). We identified beam-induced staining as a time-dependent process that enhances contrast to otherwise low contrast materials. We describe the development of this imaging method and identify conditions leading to exceptionally low electron doses for morphology visualization of unilamellar vesicles before beam-induced damage propagates.
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Affiliation(s)
- Karthikeyan Gnanasekaran
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- International Institute for Nanotechnology, Evanston, Illinois 60208, United States
| | - HanByul Chang
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- International Institute for Nanotechnology, Evanston, Illinois 60208, United States
| | - Paul J M Smeets
- International Institute for Nanotechnology, Evanston, Illinois 60208, United States
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
- NUANCE Center, Northwestern University, Evanston, Illinois 60208, United States
| | - Joanna Korpanty
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- International Institute for Nanotechnology, Evanston, Illinois 60208, United States
| | - Franz M Geiger
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- International Institute for Nanotechnology, Evanston, Illinois 60208, United States
| | - Nathan C Gianneschi
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- International Institute for Nanotechnology, Evanston, Illinois 60208, United States
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Department of Biomedical Engineering, Pharmacology, Simpson-Querrey Institute, Chemistry of Life Processes Institute, Evanston, Illinois 60208, United States
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48
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Toso S, Akkerman QA, Martín-García B, Prato M, Zito J, Infante I, Dang Z, Moliterni A, Giannini C, Bladt E, Lobato I, Ramade J, Bals S, Buha J, Spirito D, Mugnaioli E, Gemmi M, Manna L. Nanocrystals of Lead Chalcohalides: A Series of Kinetically Trapped Metastable Nanostructures. J Am Chem Soc 2020; 142:10198-10211. [PMID: 32374173 PMCID: PMC7737912 DOI: 10.1021/jacs.0c03577] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Indexed: 11/28/2022]
Abstract
We report the colloidal synthesis of a series of surfactant-stabilized lead chalcohalide nanocrystals. Our work is mainly focused on Pb4S3Br2, a chalcohalide phase unknown to date that does not belong to the ambient-pressure PbS-PbBr2 phase diagram. The Pb4S3Br2 nanocrystals herein feature a remarkably narrow size distribution (with a size dispersion as low as 5%), a good size tunability (from 7 to ∼30 nm), an indirect bandgap, photoconductivity (responsivity = 4 ± 1 mA/W), and stability for months in air. A crystal structure is proposed for this new material by combining the information from 3D electron diffraction and electron tomography of a single nanocrystal, X-ray powder diffraction, and density functional theory calculations. Such a structure is closely related to that of the recently discovered high-pressure chalcohalide Pb4S3I2 phase, and indeed we were able to extend our synthesis scheme to Pb4S3I2 colloidal nanocrystals, whose structure matches the one that has been published for the bulk. Finally, we could also prepare nanocrystals of Pb3S2Cl2, which proved to be a structural analogue of the recently reported bulk Pb3Se2Br2 phase. It is remarkable that one high-pressure structure (for Pb4S3I2) and two metastable structures that had not yet been reported (for Pb4S3Br2 and Pb3S2Cl2) can be prepared on the nanoscale by wet-chemical approaches. This highlights the important role of colloidal chemistry in the discovery of new materials and motivates further exploration into metal chalcohalide nanocrystals.
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Affiliation(s)
- Stefano Toso
- Department
of Nanochemistry and Materials Characterization Facility, Istituto
Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
- Dipartimento
di Matematica e Fisica and Interdisciplinary Laboratories for Advanced
Materials Physics, Università Cattolica
del Sacro Cuore, Via
Musei 41, I-25121 Brescia, Italy
| | - Quinten A. Akkerman
- Department
of Nanochemistry and Materials Characterization Facility, Istituto
Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Beatriz Martín-García
- Department
of Nanochemistry and Materials Characterization Facility, Istituto
Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Mirko Prato
- Department
of Nanochemistry and Materials Characterization Facility, Istituto
Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Juliette Zito
- Department
of Nanochemistry and Materials Characterization Facility, Istituto
Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Ivan Infante
- Department
of Nanochemistry and Materials Characterization Facility, Istituto
Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
- Department
of Theoretical Chemistry, Faculty of Science, Vrije Universiteit Amsterdam, de Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Zhiya Dang
- Department
of Nanochemistry and Materials Characterization Facility, Istituto
Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Anna Moliterni
- Istituto
di Cristallografia−Consiglio Nazionale delle Ricerche (IC−CNR), Via Amendola 122/O, I-70126 Bari, Italy
| | - Cinzia Giannini
- Istituto
di Cristallografia−Consiglio Nazionale delle Ricerche (IC−CNR), Via Amendola 122/O, I-70126 Bari, Italy
| | - Eva Bladt
- Electron
Microscopy for Materials Science (EMAT), University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
- NANOlab
Center of Excellence, University of Antwerp, 2020 Antwerp, Belgium
| | - Ivan Lobato
- Electron
Microscopy for Materials Science (EMAT), University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
- NANOlab
Center of Excellence, University of Antwerp, 2020 Antwerp, Belgium
| | - Julien Ramade
- Electron
Microscopy for Materials Science (EMAT), University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
- NANOlab
Center of Excellence, University of Antwerp, 2020 Antwerp, Belgium
| | - Sara Bals
- Electron
Microscopy for Materials Science (EMAT), University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
- NANOlab
Center of Excellence, University of Antwerp, 2020 Antwerp, Belgium
| | - Joka Buha
- Department
of Nanochemistry and Materials Characterization Facility, Istituto
Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Davide Spirito
- Department
of Nanochemistry and Materials Characterization Facility, Istituto
Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Enrico Mugnaioli
- Center
for Nanotechnology Innovation@NEST, Istituto
Italiano di Tecnologia, Piazza San Silvestro, 12, 56127 Pisa, Italy
| | - Mauro Gemmi
- Center
for Nanotechnology Innovation@NEST, Istituto
Italiano di Tecnologia, Piazza San Silvestro, 12, 56127 Pisa, Italy
| | - Liberato Manna
- Department
of Nanochemistry and Materials Characterization Facility, Istituto
Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
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49
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Qu Z, Feng W, Wang Y, Romanenko F, Kotov NA. Diverse Nanoassemblies of Graphene Quantum Dots and Their Mineralogical Counterparts. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201908216] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Zhi‐bei Qu
- Department of Chemical Engineering University of Michigan Ann Arbor MI 48109 USA
- Biointerfaces Institute University of Michigan Ann Arbor MI 48109 USA
- School of Chemistry and Molecular Engineering East China Normal University Shanghai 200241 China
| | - Wei‐Jie Feng
- Department of Chemical Engineering University of Michigan Ann Arbor MI 48109 USA
- Biointerfaces Institute University of Michigan Ann Arbor MI 48109 USA
| | - Yichun Wang
- Department of Chemical Engineering University of Michigan Ann Arbor MI 48109 USA
- Biointerfaces Institute University of Michigan Ann Arbor MI 48109 USA
| | - Fedor Romanenko
- Department of Geomorphology and Paleogeography Lomonosov Moscow State University Leninskie Gory Moscow 119991 Russian Federation
| | - Nicholas A. Kotov
- Department of Chemical Engineering University of Michigan Ann Arbor MI 48109 USA
- Biointerfaces Institute University of Michigan Ann Arbor MI 48109 USA
- Department of Materials Science and Engineering University of Michigan Ann Arbor MI 48109 USA
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50
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Liu X, Chen G, Tu G, Li Z, Deng B, Li W. Membrane fouling by clay suspensions during NF-like forward osmosis: Characterization via optical coherence tomography. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.117965] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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