Base de dados : MEDLINE
Pesquisa : D01.045.250 [Categoria DeCS]
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  1 / 5759 MEDLINE  
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[PMID]:29281878
[Au] Autor:Mustafa IF; Hussein MZ; Saifullah B; Idris AS; Hilmi NHZ; Fakurazi S
[Ad] Endereço:Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia , 43400 UPM Serdang, Selangor, Malaysia.
[Ti] Título:Synthesis of (Hexaconazole-Zinc/Aluminum-Layered Double Hydroxide Nanocomposite) Fungicide Nanodelivery System for Controlling Ganoderma Disease in Oil Palm.
[So] Source:J Agric Food Chem;66(4):806-813, 2018 Jan 31.
[Is] ISSN:1520-5118
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:A fungicide, hexaconazole was successfully intercalated into the intergalleries of zinc/aluminum-layered double hydroxide (ZALDH) using the ion-exchange method. Due to the intercalation of hexaconazole, the basal spacing of the ZALDH was increased from 8.7 Å in ZALDH to 29.4 Å in hexaconazole-intercalated ZALDH (HZALDH). The intercalation of hexaconazole into the interlayer of the nanocomposite was confirmed using the Fourier-transform infrared (FTIR) study. This supramolecular chemistry intercalation process enhanced the thermal stability of the hexaconazole moiety. The fungicide loading was estimated to be 51.8%. The nanodelivery system also shows better inhibition toward the Ganoderma boninense growth than the counterpart, free hexaconazole. The results from this work have a great potential to be further explored for combating basal stem rot (BSR) disease in oil palm plantation.
[Mh] Termos MeSH primário: Arecaceae/microbiologia
Fungicidas Industriais/administração & dosagem
Ganoderma/efeitos dos fármacos
Nanocompostos/química
Doenças das Plantas/prevenção & controle
Triazóis/administração & dosagem
[Mh] Termos MeSH secundário: Agroquímicos/administração & dosagem
Alumínio/química
Preparações de Ação Retardada
Hidróxidos/química
Doenças das Plantas/microbiologia
Zinco/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Agrochemicals); 0 (Delayed-Action Preparations); 0 (Fungicides, Industrial); 0 (Hydroxides); 0 (Triazoles); CPD4NFA903 (Aluminum); J41CSQ7QDS (Zinc); SX9R3X1FQV (hexaconazole)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180212
[Lr] Data última revisão:
180212
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171229
[St] Status:MEDLINE
[do] DOI:10.1021/acs.jafc.7b04222


  2 / 5759 MEDLINE  
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[PMID]:29206449
[Au] Autor:Kulikova NA; Polyakov AY; Lebedev VA; Abroskin DP; Volkov DS; Pankratov DA; Klein OI; Senik SV; Sorkina TA; Garshev AV; Veligzhanin AA; Garcia Mina JM; Perminova IV
[Ad] Endereço:Department of Soil Science, Lomonosov Moscow State University , Leninskie gory 1-12, 119991 Moscow, Russia.
[Ti] Título:Key Roles of Size and Crystallinity of Nanosized Iron Hydr(oxides) Stabilized by Humic Substances in Iron Bioavailability to Plants.
[So] Source:J Agric Food Chem;65(51):11157-11169, 2017 Dec 27.
[Is] ISSN:1520-5118
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Availability of Fe in soil to plants is closely related to the presence of humic substances (HS). Still, the systematic data on applicability of iron-based nanomaterials stabilized with HS as a source for plant nutrition are missing. The goal of our study was to establish a connection between properties of iron-based materials stabilized by HS and their bioavailability to plants. We have prepared two samples of leonardite HS-stabilized iron-based materials with substantially different properties using the reported protocols and studied their physical chemical state in relation to iron uptake and other biological effects. We used Mössbauer spectroscopy, XRD, SAXS, and TEM to conclude on iron speciation, size, and crystallinity. One material (Fe-HA) consisted of polynuclear iron(III) (hydr)oxide complexes, so-called ferric polymers, distributed in HS matrix. These complexes are composed of predominantly amorphous small-size components (<5 nm) with inclusions of larger crystalline particles (the mean size of (11 ± 4) nm). The other material was composed of well-crystalline feroxyhyte (δ'-FeOOH) NPs with mean transverse sizes of (35 ± 20) nm stabilized by small amounts of HS. Bioavailability studies were conducted on wheat plants under conditions of iron deficiency. The uptake studies have shown that small and amorphous ferric polymers were readily translocated into the leaves on the level of Fe-EDTA, whereas relatively large and crystalline feroxyhyte NPs were mostly sorbed on the roots. The obtained data are consistent with the size exclusion limits of cell wall pores (5-20 nm). Both samples demonstrated distinct beneficial effects with respect to photosynthetic activity and lipid biosynthesis. The obtained results might be of use for production of iron-based nanomaterials stabilized by HS with the tailored iron availability to plants. They can be applied as the only source for iron nutrition as well as in combination with the other elements, for example, for industrial production of "nanofortified" macrofertilizers (NPK).
[Mh] Termos MeSH primário: Fertilizantes/análise
Substâncias Húmicas/análise
Hidróxidos/química
Ferro/química
Ferro/metabolismo
Nanopartículas/química
Triticum/metabolismo
[Mh] Termos MeSH secundário: Disponibilidade Biológica
Hidróxidos/metabolismo
Nanopartículas/metabolismo
Tamanho da Partícula
Triticum/crescimento & desenvolvimento
Difração de Raios X
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Fertilizers); 0 (Humic Substances); 0 (Hydroxides); E1UOL152H7 (Iron)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180108
[Lr] Data última revisão:
180108
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171206
[St] Status:MEDLINE
[do] DOI:10.1021/acs.jafc.7b03955


  3 / 5759 MEDLINE  
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[PMID]:28867758
[Au] Autor:Janlamool J; Jongsomjit B
[Ad] Endereço:Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University.
[Ti] Título:Catalytic Ethanol Dehydration to Ethylene over Nanocrystalline χ- and γ-Al O Catalysts.
[So] Source:J Oleo Sci;66(9):1029-1039, 2017.
[Is] ISSN:1347-3352
[Cp] País de publicação:Japan
[La] Idioma:eng
[Ab] Resumo:The study is aimed to investigate the combination of nanocrystalline γ- and χ- alumina that displays the attractive chemical and physical properties for the catalytic dehydration of ethanol. The correlation between the acid density and ethanol conversion was observed. The high acid density apparently results in high catalytic activity, especially for the equally mixed γ- and χ- phase alumina (G50C50). In order to obtain a better understanding on how different catalysts would affect the ethylene yield, one of the most powerful techniques such as X-ray photoelectron spectroscopy (XPS) was performed. Hence, the different O 1s surface atoms can be identified and divided into three types including lattice oxygen (O, 530.7 eV), surface hydroxyl (OH, 532.1 eV) and lattice water (H O, 532.9 eV). It was remarkably found that the large amount of O 1s surface atoms in lattice water can result in increased ethylene yield. In summary, the appearance of metastable χ-alumina structure exhibited better catalytic activity and ethylene yield than γ- alumina. Thus, the introduction of metastable χ- alumina structure into γ- alumina enhanced catalytic activity and ethylene yield. As the result, it was found that the G50C50 catalyst exhibits the ethylene yield (80%) at the lowest reaction temperature ca. 250°C among other catalysts.
[Mh] Termos MeSH primário: Óxido de Alumínio/química
Etanol/química
Etilenos/síntese química
Nanopartículas/química
[Mh] Termos MeSH secundário: Catálise
Desidratação
Hidróxidos
Oxigênio
Espectroscopia Fotoeletrônica
Temperatura Ambiente
Água
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Ethylenes); 0 (Hydroxides); 059QF0KO0R (Water); 3K9958V90M (Ethanol); 9159UV381P (hydroxide ion); 91GW059KN7 (ethylene); LMI26O6933 (Aluminum Oxide); S88TT14065 (Oxygen)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171031
[Lr] Data última revisão:
171031
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170905
[St] Status:MEDLINE
[do] DOI:10.5650/jos.ess17026


  4 / 5759 MEDLINE  
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[PMID]:28840643
[Au] Autor:Ge R; Ren X; Ji X; Liu Z; Du G; Asiri AM; Sun X; Chen L
[Ad] Endereço:College of Chemistry, Sichuan University, Chengdu, 610064, Sichuan, P. R. China.
[Ti] Título:Benzoate Anion-Intercalated Layered Cobalt Hydroxide Nanoarray: An Efficient Electrocatalyst for the Oxygen Evolution Reaction.
[So] Source:ChemSusChem;10(20):4004-4008, 2017 Oct 23.
[Is] ISSN:1864-564X
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:Efficient oxygen evolution reaction (OER) catalysts are highly desired to improve the overall efficiency of electrochemical water splitting. We develop a benzoate anion-intercalated layered cobalt hydroxide nanobelt array on nickel foam (benzoate-Co(OH) /NF) through a one-pot hydrothermal process. As a 3 D electrode, benzoate-Co(OH) /NF with an expanded interlayer spacing (14.72 Å) drives a high OER catalytic current density of 50 mA cm at an overpotential of 291 mV, outperforming its carbonate anion-intercalated counterpart with a lower interlayer spacing of 8.81 Š(337 mV overpotential at 50 mA cm ). Moreover, this benzoate-Co(OH) /NF can maintain its catalytic activity for 21 h.
[Mh] Termos MeSH primário: Benzoatos/química
Cobalto/química
Hidróxidos/química
Nanotecnologia/instrumentação
Oxigênio/química
[Mh] Termos MeSH secundário: Catálise
Eletroquímica
Eletrodos
Níquel/química
Temperatura Ambiente
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Benzoates); 0 (Hydroxides); 0 (cobalt hydroxide); 3G0H8C9362 (Cobalt); 7OV03QG267 (Nickel); S88TT14065 (Oxygen)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171106
[Lr] Data última revisão:
171106
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170826
[St] Status:MEDLINE
[do] DOI:10.1002/cssc.201701358


  5 / 5759 MEDLINE  
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[PMID]:28764080
[Au] Autor:Yang D; Li X; Meng D; Wang M; Yang Y
[Ad] Endereço:Faculty of Life Science and Technology, Kunming University of Science and Technology, Yunnan Province 650500, China. Electronic address: ydz960722979@163.com.
[Ti] Título:Supramolecular solvents combined with layered double hydroxide-coated magnetic nanoparticles for extraction of bisphenols and 4-tert-octylphenol from fruit juices.
[So] Source:Food Chem;237:870-876, 2017 Dec 15.
[Is] ISSN:0308-8146
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:A magnesium-aluminum layered double hydroxides coated on magnetic nanoparticles (Fe O @MgAl-LDHs NPs) combined with the supramolecular solvents (SUPRASs) as the magnetic supramolecular fluids were successfully applied to the extraction and determination of four phenolic compounds (Bisphenol-A (BPA), bisphenol-AF (BPAF), tetrabromobisphenol-A (TBBPA) and 4-tert-octylphenol (4-TOP)). Magnetic supramolecular fluids (ferrofluids) composites were prepared through adding the mixture of n-octanol and tetrahydrofuran in distilled water as the supramolecular solvents into the solution containing magnetic Fe O @MgAl-LDHs NPs. Under the optimized conditions, the calibration curve was obtained in range of 5-1000µgL . The limits of detection (S/N=3) for BPA, BPAF, TBBPA and 4-TOP, were obtained for 0.54, 0.48, 0.37 and 0.63µgL , respectively. The intra-day and inter-day precision (RSDs %) for bisphenols (BPs) and 4-TOP at 100 and 300µgL were in the range of 4.0-7.8. The enrichment factors were between 16 and 24.
[Mh] Termos MeSH primário: Sucos de Frutas e Vegetais
[Mh] Termos MeSH secundário: Hidróxidos
Nanopartículas de Magnetita
Fenóis
Solventes
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Hydroxides); 0 (Magnetite Nanoparticles); 0 (Phenols); 0 (Solvents); IOY9FVU3J3 (4-tert-octylphenol)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171031
[Lr] Data última revisão:
171031
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170803
[St] Status:MEDLINE


  6 / 5759 MEDLINE  
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[PMID]:28731709
[Au] Autor:Everaert M; Degryse F; McLaughlin MJ; De Vos D; Smolders E
[Ad] Endereço:Division of Soil and Water Management, Department of Earth and Environmental Science, KU Leuven , Kasteelpark Arenberg 20, B-3001 Heverlee, Belgium.
[Ti] Título:Agronomic Effectiveness of Granulated and Powdered P-Exchanged Mg-Al LDH Relative to Struvite and MAP.
[So] Source:J Agric Food Chem;65(32):6736-6744, 2017 Aug 16.
[Is] ISSN:1520-5118
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Layered double hydroxides (LDHs) used to recover P from wastewater have recently been proposed as new slow-release fertilizers. Here, the use of P-exchanged Mg-Al LDHs as powdered or granulated fertilizer is explored and compared with monoammonium phosphate (MAP), a fully water-soluble fertilizer, and with struvite, a recycled phosphate fertilizer with lower solubility. First, these three fertilizers were compared in a 100-day incubation experiment using P diffusion visualization and chemical analysis to assess P release from either granules or powdered fertilizer in three different soils. By the end of the incubation, 74-90% of P remained within the LDH granule, confirming a slow release. Second, a pot experiment was performed with wheat (Triticum aestivum) in an acid and a calcareous soil. The granular treatment resulted in a considerably higher P uptake for MAP compared to LDH and struvite. For the powder treatments, the P uptake was less than for granular MAP and was largely unaffected by the chemical form. The LDHs and struvite showed a lower agronomic effectiveness than granular MAP, but the benefits of their use in P recycling, potential residual value, and environmental benefits may render these slow-release fertilizers attractive.
[Mh] Termos MeSH primário: Fertilizantes/análise
Hidróxidos/química
Fosfatos/química
Fósforo/química
Estruvita/química
Triticum/crescimento & desenvolvimento
[Mh] Termos MeSH secundário: Hidróxidos/metabolismo
Fosfatos/metabolismo
Fósforo/metabolismo
Pós/química
Pós/metabolismo
Solo/química
Estruvita/metabolismo
Triticum/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Fertilizers); 0 (Hydroxides); 0 (Phosphates); 0 (Powders); 0 (Soil); 10124-31-9 (ammonium phosphate); 27YLU75U4W (Phosphorus); AW3EJL1462 (Struvite)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170722
[St] Status:MEDLINE
[do] DOI:10.1021/acs.jafc.7b01031


  7 / 5759 MEDLINE  
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[PMID]:28609747
[Au] Autor:Hu B; Ye F; Jin C; Ma X; Huang C; Sheng G; Ma J; Wang X; Huang Y
[Ad] Endereço:College of Chemistry and Chemical Engineering, College of Life Science, Shaoxing University, Zhejiang 312000, PR China.
[Ti] Título:The enhancement roles of layered double hydroxide on the reductive immobilization of selenate by nanoscale zero valent iron: Macroscopic and microscopic approaches.
[So] Source:Chemosphere;184:408-416, 2017 Oct.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Herein, we utilized nanoscale zero-valent iron loaded on layered double hydroxide (NZVI/LDH) to immobilize Se(VI) and evaluated the enhancement role of LDH in the NZVI reaction system. The structural characterization indicated that LDH could stabilize and disperse NZVI as well as prevent NZVI from oxidation, thereby increasing iron reactivity. Batch experiments displayed that, compared with those by NZVI, both extent and rate of Se(VI) immobilized by NZVI/LDH significantly increased, owing to the prominent synergistic effect ascribing from adsorption and reduction. Kinetics studies under a series of conditions showed that Se(VI) reaction could be well described by pseudo first-order model. The performance of Se(VI) immobilization was inhibited to a considerable extent by most of co-existing ions, Nevertheless, the presence of Cu improved performance of NZVI/LDH due to its role as a catalyst or medium of charge transfer during reduction. XANES revealed that LDH acted as a promoter for complete reduction of Se(VI) into Se(0)/Se(-II) over a wide pH range, whereas EXAFS suggested that LDH acted as a scavenger for insoluble products, making more reactive sites exposure to Se(VI) for reduction. These results suggested that NZVI/LDH as a promising candidate exhibited potential application in remediation of wastewaters containing Se(VI).
[Mh] Termos MeSH primário: Recuperação e Remediação Ambiental/métodos
Ferro
Ácido Selênico
[Mh] Termos MeSH secundário: Adsorção
Hidróxidos/química
Ferro/química
Oxirredução
Águas Residuais
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Hydroxides); 0 (Waste Water); 9159UV381P (hydroxide ion); E1UOL152H7 (Iron); HV0Y51NC4J (Selenic Acid)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171016
[Lr] Data última revisão:
171016
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170614
[St] Status:MEDLINE


  8 / 5759 MEDLINE  
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[PMID]:28586139
[Au] Autor:Xu G; Xu Z; Shi Z; Pei L; Yan S; Gu Z; Zou Z
[Ad] Endereço:Eco-materials and Renewable Energy Research Center, ERERC, Collaborative Innovation Center of Advanced Microstructures, College of Engineering and Applied Sciences, Nanjing University, No. 22, Hankou Road, Nanjing, Jiangsu, 210093, P.R. China.
[Ti] Título:Silicon Photoanodes Partially Covered by Ni@Ni(OH) Core-Shell Particles for Photoelectrochemical Water Oxidation.
[So] Source:ChemSusChem;10(14):2897-2903, 2017 Jul 21.
[Is] ISSN:1864-564X
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:Two obstacles hindering solar energy conversion by photoelectrochemical (PEC) water-splitting devices are the charge separation and the transport efficiency at the photoanode-electrolyte interface region. Herein, core-shell-structured Ni@Ni(OH) nanoparticles were electrodeposited on the surface of an n-type Si photoanode. The Schottky barrier between Ni and Si is sensitive to the thickness of the Ni(OH) shell. The photovoltage output of the photoanode increases with increasing thickness of the Ni(OH) shell, and is influenced by interactions between Ni and Ni(OH) , the electrolyte screening effect, and the p-type nature of the Ni(OH) layer. Ni@Ni(OH) core-shell nanoparticles with appropriate shell thicknesses coupled to n-type Si photoanodes promote the separation of photogenerated carriers and improve the charge-injection efficiency to nearly 100 %. An onset potential of 1.03 V versus reversible hydrogen electrode (RHE) and a saturated current density of 36.4 mA cm was obtained for the assembly.
[Mh] Termos MeSH primário: Hidróxidos/química
Níquel/química
Processos Fotoquímicos
Silício/química
Energia Solar
Água/química
[Mh] Termos MeSH secundário: Eletroquímica
Oxirredução
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Hydroxides); 059QF0KO0R (Water); 12054-48-7 (nickel hydroxide (II)); 7OV03QG267 (Nickel); Z4152N8IUI (Silicon)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170818
[Lr] Data última revisão:
170818
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170607
[St] Status:MEDLINE
[do] DOI:10.1002/cssc.201700825


  9 / 5759 MEDLINE  
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[PMID]:28566662
[Au] Autor:Sato T
[Ad] Endereço:Department of Dermatology, Kitasato University Kitasato Institute Hospital.
[Ti] Título:Practical Management of Deep Cutaneous Fungal Infections.
[So] Source:Med Mycol J;58(2):E71-E77, 2017.
[Is] ISSN:1882-0476
[Cp] País de publicação:Japan
[La] Idioma:eng
[Ab] Resumo:Understanding deep cutaneous fungal infection requires not only reading many case reports and checking the typical clinical images of skin lesions, but also managing the patients properly to prevent misdiagnosis. Herein, I review my recent experiences with eight typical cases of deep cutaneous infections (including protothecosis and nocardiosis) in Japan. It is very important to do the four management processes; namely, KOH direct microscopic examination, skin biopsy, fungal culture, and microscopic examination of the histopathological specimen of PAS and Grocott staining. Also, to aid in memorizing the names of important diseases, I recommend the mnemonic "AC PPPS MD" (Aspergillosis, Cryptococcosis, Phaeohyphomycosis, Protothecosis, Pseudoallescheriosis, Sporotrichosis, Mycetoma, and Dermatophytosis). Isolation of the fungus by culturing from the skin lesion is the best way to carry out quick and correct diagnosis.
[Mh] Termos MeSH primário: Dermatomicoses/diagnóstico
Dermatomicoses/microbiologia
Fungos/isolamento & purificação
[Mh] Termos MeSH secundário: Idoso
Idoso de 80 Anos ou mais
Antifúngicos/administração & dosagem
Biópsia
Dermatomicoses/patologia
Dermatomicoses/terapia
Erros de Diagnóstico/prevenção & controle
Evolução Fatal
Feminino
Seres Humanos
Hidróxidos
Japão
Masculino
Técnicas Microbiológicas
Microscopia
Compostos de Potássio
Pele/microbiologia
Pele/patologia
Resultado do Tratamento
[Pt] Tipo de publicação:CASE REPORTS; JOURNAL ARTICLE; REVIEW
[Nm] Nome de substância:
0 (Antifungal Agents); 0 (Hydroxides); 0 (Potassium Compounds); WZH3C48M4T (potassium hydroxide)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171005
[Lr] Data última revisão:
171005
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170602
[St] Status:MEDLINE
[do] DOI:10.3314/mmj.17.006


  10 / 5759 MEDLINE  
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[PMID]:28544901
[Au] Autor:Xue Y; Zheng S; Sun Z; Zhang Y; Jin W
[Ad] Endereço:National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China.
[Ti] Título:Alkaline electrochemical advanced oxidation process for chromium oxidation at graphitized multi-walled carbon nanotubes.
[So] Source:Chemosphere;183:156-163, 2017 Sep.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Alkaline electrochemical advanced oxidation processes for chromium oxidation and Cr-contaminated waste disposal were reported in this study. The highly graphitized multi-walled carbon nanotubes g-MWCNTs modified electrode was prepared for the in-situ electrochemical generation of HO . RRDE test results illustrated that g-MWCNTs exhibited much higher two-electron oxygen reduction activity than other nanocarbon materials with peak current density of 1.24 mA cm , %HO of 77.0% and onset potential of -0.15 V (vs. Hg/HgO). It was originated from the highly graphitized structure and good electrical conductivity as illustrated from the Raman, XRD and EIS characterizations, respectively. Large amount of reactive oxygen species (HO and ·OH) were in-situ electro-generated from the two-electron oxygen reduction and chromium-induced alkaline electro-Fenton-like reaction. The oxidation of Cr(III) was efficiently achieved within 90 min and the conversion ratio maintained more than 95% of the original value after stability test, offering an efficient and green approach for the utilization of Cr-containing wastes.
[Mh] Termos MeSH primário: Cromo/análise
Técnicas Eletroquímicas/métodos
Grafite/química
Resíduos Industriais/análise
Nanotubos de Carbono/química
Eliminação de Resíduos Líquidos/métodos
[Mh] Termos MeSH secundário: Cromo/química
Compostos de Cromo
Técnicas Eletroquímicas/instrumentação
Eletrodos
Concentração de Íons de Hidrogênio
Hidróxidos/química
Oxirredução
Compostos de Potássio/química
Propriedades de Superfície
Eliminação de Resíduos Líquidos/instrumentação
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Chromium Compounds); 0 (Hydroxides); 0 (Industrial Waste); 0 (Nanotubes, Carbon); 0 (Potassium Compounds); 0R0008Q3JB (Chromium); 7782-42-5 (Graphite); WZH3C48M4T (potassium hydroxide); X5Z09SU859 (chromic oxide)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171003
[Lr] Data última revisão:
171003
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170526
[St] Status:MEDLINE



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