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Chen G, Yan L, Wan X, Zhang Q, Wang Q. In Situ Synthesis of Silver Nanoparticles on Cellulose Fibers Using D-Glucuronic Acid and Its Antibacterial Application. MATERIALS 2019; 12:ma12193101. [PMID: 31547568 PMCID: PMC6803989 DOI: 10.3390/ma12193101] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 09/12/2019] [Accepted: 09/19/2019] [Indexed: 12/31/2022]
Abstract
The development of ecofriendly procedures to avoid the use of toxic chemicals for the synthesis of stable silver nanoparticles (AgNPs) is highly desired. In the present study, we reported an eco-friendly and green technique for in situ fabrication of AgNPs on bleached hardwood pulp fibers (bhpFibers) using D-glucuronic acid as the only reducing agent. Different amounts of D-glucuronic acid were introduced and its effect on the size and distribution of AgNPs on the bhpFibers was discussed. The morphology and structures of bhpFibers@AgNPs were proved by electron microscope-dispersive spectroscopy (SEM-EDS), X-ray diffraction (XRD), Fourier transform infrared (FT-IR) and X-ray photoelectron spectroscopy (XPS). Then, a series of bhpFibers@AgNPs with different AgNPs loadings were also prepared by adjusting the concentration of the AgNO3 solution. After a papermaking process via vacuum filtration, the prepared papers displayed an outstanding antibacterial performance against Escherichia coli (gram -negative) and Staphylococcus aureus (gram-positive). It is foreseeable that the bhpFibers@AgNPs have a promising application in the field of biomedical.
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Affiliation(s)
- Guangxue Chen
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Linjuan Yan
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Xiaofang Wan
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Qiankun Zhang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Qing Wang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
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2
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Djouider F. Kinetics and mechanism of the advanced oxidation process of Cr(III) to Cr(VI) by SO4
−˙ free radicals in slightly acidic simulated atmospheric water. RADIOCHIM ACTA 2019. [DOI: 10.1515/ract-2019-3134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In a previous work, we showed that the oxidation of Cr(III) to Cr(VI) by OH˙ present in the atmospheric water droplets has the potential to threaten the people’s health since non-toxic species is transformed into environmental carcinogens. The same oxidation might be initiated by the SO4
−˙ free radicals. Here, we shed some light on the detailed mechanisms of this oxidation reaction occurring in ambient atmosphere. Steady state irradiation and pulse radiolysis technique were used to generate SO4
−˙. The advanced oxidation process mechanism was investigated at pH 4 and 6 selected as typical values of cloud water acidity. Our findings showed that the oxidation is pseudo-first order with respect to Cr(III) and is pH dependent. In the suggested reaction mechanism, the electron transfer proceeds via an inner sphere mechanism, with formation of the [Cr(III)–SO4
−˙] precursor adduct, followed by an electron transfer inside the adduct, from Cr(III) to SO4
−˙, to form Cr(IV):
Cr(III)
+
SO
4
−
·
⇌
[
C
r
(
III
)
–
SO
4
−
·
]
→
Cr(IV)
+
SO
4
2
−
.
$${\rm{Cr(III)}} + {\rm{S}}{{\rm{O}}_4}^{ - \cdot}[Cr({\rm{III}})-{\rm{S}}{{\rm{O}}_4}^{ -\cdot }] \to {\rm{Cr(IV)}} + {\rm{S}}{{\rm{O}}_4}^{2 - }.$$
At pH 4, the equilibrium constant and the rate constant are 7.52 × 104 M−1 and 2.47 × 104 s−1, respectively. At pH 6 these values become 1.90 × 105 M−1 and 1.41 × 104 s−1, respectively.
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Affiliation(s)
- Fathi Djouider
- Nuclear Engineering Department, Faculty of Engineering , King Abdulaziz University , Po Box 80204 , Jeddah, 21589 , Saudi Arabia , Tel.: +966 558822318, E-mail:
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3
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Mangiameli MF, Bellú S, Pérez Mora B, Sala L, Mamana N. Quinic acid and hypervalent chromium: a spectroscopic and kinetic study. RSC Adv 2018; 8:29356-29367. [PMID: 35547999 PMCID: PMC9084479 DOI: 10.1039/c8ra03809k] [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: 05/03/2018] [Accepted: 07/09/2018] [Indexed: 11/30/2022] Open
Abstract
The redox reaction between an excess of quinic acid (QA) and CrVI involves the formation of intermediates, namely, CrIV and CrV species, which in turn react with the organic substrates. As observed with other substrates that have already been studied, CrIV does not accumulate during this reaction because of the rate of the reaction. Its rate of disappearance is several times higher than that of the reaction of CrVI or CrV with QA. Kinetic studies indicate that the redox reaction proceeds via a combined mechanism that involves the pathways CrVI → CrIV → CrII and CrVI → CrIV → CrIII, which is supported by the observation of superoxo-CrIII (CrO22+) ions, free radicals, and oxo-CrV species as intermediates and the detection of CrVI ester species. The present study reports the complete rate laws for the QA/chromium redox reaction. The redox reaction between an excess of quinic acid (QA) and CrVI involves the formation of intermediates, namely, CrIV and CrV species, which in turn react with the organic substrates.![]()
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Affiliation(s)
- María Florencia Mangiameli
- Área Química General e Inorgánica
- Departamento de Química-Física
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- S2002LRK Rosario
| | - Sebastián Bellú
- Área Química General e Inorgánica
- Departamento de Química-Física
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- S2002LRK Rosario
| | - Bárbara Pérez Mora
- Área Química General e Inorgánica
- Departamento de Química-Física
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- S2002LRK Rosario
| | - Luis Sala
- Área Química General e Inorgánica
- Departamento de Química-Física
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- S2002LRK Rosario
| | - Nadia Mamana
- Área Química General e Inorgánica
- Departamento de Química-Física
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- S2002LRK Rosario
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4
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Mangiameli MF, González JC, Bellú S, Bertoni F, Sala LF. Redox and complexation chemistry of the CrVI/CrV-D-glucaric acid system. Dalton Trans 2015; 43:9242-54. [PMID: 24816781 DOI: 10.1039/c4dt00717d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
When an excess of uronic acid over Cr(VI) is used, the oxidation of D-glucaric acid (Glucar) by Cr(VI) yields D-arabinaric acid, CO2 and Cr(III)-Glucar complex as final redox products. The redox reaction involves the formation of intermediate Cr(IV) and Cr(V) species. The reaction rate increases with [H(+)] and [substrate]. The experimental results indicated that Cr(IV) and Cr(V) are very reactive intermediates since their disappearance rates are much faster than Cr(VI). Cr(IV) and Cr(V) intermediates are involved in fast steps and do not accumulate in the redox reaction of the mixture Cr(VI)-Glucar. Kinetic studies show that the redox reaction between Glucar and Cr(VI) proceeds through a mechanism combining one- and two-electron pathways: Cr(VI) → Cr(IV) → Cr(II) and Cr(VI) → Cr(IV) → Cr(III). After the redox reaction, results show a slow hydrolysis of the Cr(III)-Glucar complex into [Cr(OH2)6](3+). The proposed mechanism is supported by the observation of free radicals, CrO2(2+) (superoxo-Cr(III) ion) and oxo-Cr(V)-Glucar species as reaction intermediates. The continuous-wave electron paramagnetic resonance, CW-EPR, spectra show that five-coordinate oxo-Cr(V) bischelates are formed at pH ≤ 4 with the aldaric acid bound to oxo-Cr(V) through the carboxylate and the α-OH group. A different oxo-Cr(V) species with Glucar was detected at pH 6.0. The high g(iso) value for the last species suggests a mixed coordination species, a five-coordinated oxo-Cr(V) bischelate with one molecule of Glucar acting as a bi-dentate ligand, using the 2-hydroxycarboxylate group, and a second molecule of Glucar with any vic-diolate sites. At pH 7.5 only a very weak EPR signal was observed, which may point to instability of these complexes. This behaviour contrasts with oxo-Cr(V)-uronic species, and must thus be related to the Glucar acyclic structure. In vitro, our studies on the chemistry of oxo-Cr(V)-Glucar complexes can provide information on the nature of the species that are likely to be stabilized in vivo.
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Affiliation(s)
- María Florencia Mangiameli
- Área Química General, Departamento de Químico-Física, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, UNR, Instituto de Química de Rosario-CONICET, Suipacha 531, S2002LRK, Rosario, Santa Fe, Argentina.
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Bertoni FA, Bellú SE, González JC, Sala LF. Reduction of hypervalent chromium in acidic media by alginic acid. Carbohydr Polym 2014; 114:1-11. [PMID: 25263857 DOI: 10.1016/j.carbpol.2014.07.065] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Revised: 07/23/2014] [Accepted: 07/31/2014] [Indexed: 10/24/2022]
Abstract
Selective oxidation of carboxylate groups present in alginic acid by Cr(VI) affords CO2, oxidized alginic acid, and Cr(III) as final products. The redox reaction afforded first-order kinetics in [alginic acid], [Cr(VI)], and [H(+)], at fixed ionic strength and temperature. Kinetic studies showed that the redox reaction proceeds through a mechanism which combines Cr(VI)→Cr(IV)→Cr(II) and Cr(VI)→Cr(IV)→Cr(III) pathways. The mechanism was supported by the observation of free radicals, CrO2(2+) and Cr(V) as reaction intermediates. The reduction of Cr(IV) and Cr(V) by alginic acid was independently studied and it was found to occur more than 10(3) times faster than alginic acid/Cr(VI) reaction, in acid media. At pH 1-3, oxo-chromate(V)-alginic acid species remain in solution during several hours at 15°C. The results showed that this abundant structural polysaccharide present on brown seaweeds is able to reduce Cr(VI/V/IV) or stabilize high-valent chromium depending on pH value.
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Affiliation(s)
- Fernando A Bertoni
- Área Química General, Departamento de Químico-Física, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Santa Fe, Argentina; Instituto de Química de Rosario-CONICET, Suipacha 570, S2002LRK Rosario, Santa Fe, Argentina
| | - Sebastian E Bellú
- Área Química General, Departamento de Químico-Física, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Santa Fe, Argentina; Instituto de Química de Rosario-CONICET, Suipacha 570, S2002LRK Rosario, Santa Fe, Argentina.
| | - Juan C González
- Área Química General, Departamento de Químico-Física, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Santa Fe, Argentina; Instituto de Química de Rosario-CONICET, Suipacha 570, S2002LRK Rosario, Santa Fe, Argentina
| | - Luis F Sala
- Área Química General, Departamento de Químico-Física, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Santa Fe, Argentina; Instituto de Química de Rosario-CONICET, Suipacha 570, S2002LRK Rosario, Santa Fe, Argentina
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6
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Djouider F, Hussain A. A laboratory study of the oxidation of non toxic Cr(III) to toxic Cr(VI) by OH(•) free radicals in simulated atmospheric water droplets conditions: potential environmental impact. JOURNAL OF HAZARDOUS MATERIALS 2014; 276:19-25. [PMID: 24862466 DOI: 10.1016/j.jhazmat.2014.05.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 04/10/2014] [Accepted: 05/04/2014] [Indexed: 06/03/2023]
Abstract
In atmospheric waters, oxidation of Cr(III) to Cr(VI) by OH(•) free radicals is a major environmental hazard since non-toxic species is transformed into toxic one. It is important to obtain some details concerning this oxidation reaction. In this study we simulated this oxidation by steady state radiolysis using (60)Co radioactive source and pulse radiolysis technique using a 2.5MeV van de Graaff electron accelerator and investigated its kinetics in the pH range 1 to 9. Our findings showed that the reaction was highly pH dependant with a maximum yield at pH 4. The electron transfer proceeds via an inner sphere mechanism with (i) formation of the [OH(•)-Cr(III)] adduct with an equilibrium constant of 2.34×10(4)mol(-1)dm(-3) then (ii) followed by an electron transfer from Cr(III) to OH(•) within the adduct with a rate constant of 2.51×10(4)s(-1). The implication of this oxidation to atmospheric chromium contamination is discussed.
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Affiliation(s)
- Fathi Djouider
- Nuclear Engineering Department, Faculty of Engineering, King Abdulaziz University, PO Box 80204, Jeddah 21589, Saudi Arabia.
| | - Ahmad Hussain
- Nuclear Engineering Department, Faculty of Engineering, King Abdulaziz University, PO Box 80204, Jeddah 21589, Saudi Arabia
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7
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Bartholomäus R, Irwin JA, Shi L, Smith SM, Levina A, Lay PA. Isolation, Characterization, and Nuclease Activity of Biologically Relevant Chromium(V) Complexes with Monosaccharides and Model Diols. Likely Intermediates in Chromium-Induced Cancers. Inorg Chem 2013; 52:4282-92. [DOI: 10.1021/ic3022408] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ruben Bartholomäus
- Fachbereich Chemie, Philipps-Universität Marburg,
Hans-Meerwein-Strasse, D-35032 Marburg, Germany
- School of Chemistry, The University of Sydney, New South
Wales 2006, Australia
| | - Jennifer A. Irwin
- School of Chemistry, The University of Sydney, New South
Wales 2006, Australia
| | - Liwei Shi
- School of Chemistry, The University of Sydney, New South
Wales 2006, Australia
| | - Siwaporn Meejoo Smith
- School of Chemistry, The University of Sydney, New South
Wales 2006, Australia
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand
| | - Aviva Levina
- School of Chemistry, The University of Sydney, New South
Wales 2006, Australia
| | - Peter A. Lay
- School of Chemistry, The University of Sydney, New South
Wales 2006, Australia
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8
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González JC, Mangiameli MF, Asis AC, Bellú S, Sala LF. Oxidation of carbohydrates of biological importance by the aquachromium(IV) ion. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.09.042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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9
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Mangiameli MF, González JC, García SI, Frascaroli MI, Van Doorslaer S, Salas Peregrin JM, Sala LF. New insights on the mechanism of oxidation of d-galacturonic acid by hypervalent chromium. Dalton Trans 2011; 40:7033-45. [DOI: 10.1039/c1dt10214a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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10
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Sala LF, González JC, García SI, Frascaroli MI, Van Doorslaer S. Detection and structural characterization of oxo-chromium(V)-sugar complexes by electron paramagnetic resonance. Adv Carbohydr Chem Biochem 2011; 66:69-120. [PMID: 22123188 DOI: 10.1016/b978-0-12-385518-3.00002-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This article describes the detection and characterization of oxo-Cr(V)-saccharide coordination compounds, produced during chromic oxidation of carbohydrates by Cr(VI) and Cr(V), using electron paramagnetic resonance (EPR) spectroscopy. After an introduction into the main importance of chromium (bio)chemistry, and more specifically the oxo-chromium(V)-sugar complexes, a general overview is given of the current state-of-the-art EPR techniques. The next step reviews which types of EPR spectroscopy are currently applied to oxo-Cr(V) complexes, and what information about these systems can be gained from such experiments. The advantages and pitfalls of the different approaches are discussed, and it is shown that the potential of high-field and pulsed EPR techniques is as yet still largely unexploited in the field of oxo-Cr(V) complexes. Subsequently, the discussion focuses on the analysis of oxo-Cr(V) complexes of different types of sugars and the implications of the results in terms of understanding chromium (bio)chemistry.
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Affiliation(s)
- Luis F Sala
- Departamento de Químico Física-Área Química General, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Santa Fe, Argentina
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11
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Mangiameli MF, González JC, García S, Bellú S, Santoro M, Caffaratti E, Frascaroli MI, Peregrín JMS, Atria AM, Sala LF. Redox, kinetics, and complexation chemistry of the CrVI/CrV/CrIV -D-glycero-D-gulo-heptono-1,4-lactone System. J PHYS ORG CHEM 2010. [DOI: 10.1002/poc.1745] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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