Base de dados : MEDLINE
Pesquisa : G02.740.685 [Categoria DeCS]
Referências encontradas : 9602 [refinar]
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[PMID]:28452222
[Au] Autor:Zhu Y; Serra A; Guo T; Park JE; Zhong Q; Sze SK
[Ad] Endereço:School of Biological Sciences, Nanyang Technological University , 60 Nanyang Drive 637551, Singapore.
[Ti] Título:Application of Nanosecond Laser Photolysis Protein Footprinting to Study EGFR Activation by EGF in Cells.
[So] Source:J Proteome Res;16(6):2282-2293, 2017 Jun 02.
[Is] ISSN:1535-3907
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Mass spectrometry-based protein footprinting emerged as a useful technology to understand protein ligand interactions in vitro. We have previously demonstrated the application of footprinting in live E. coli cells. Here, we further optimized an ultrafast laser photolysis hydroxyl radical footprinting method and applied it to study the interaction of EGF and EGFR in live mammalian cells. This method used a nanosecond laser to photochemically generate a burst of hydroxyl radicals in situ in-cell suspension to oxidize the amino acids on the protein surface. Mass spectrometric analysis of the thus modified peptides was interpreted to probe the solvent-accessible surface areas of the protein in its native biological state with and without EGF activation. Our footprinting data agreed with the two relevant EGFR crystal structures, indicating that this in-cell laser photolysis footprinting technique is a valid approach to study the structural properties of integral membrane proteins directly in the native environment.
[Mh] Termos MeSH primário: Fator de Crescimento Epidérmico/metabolismo
Pegadas de Proteínas/métodos
Receptor do Fator de Crescimento Epidérmico/metabolismo
[Mh] Termos MeSH secundário: Aminoácidos/química
Ativação Enzimática
Células HEK293
Seres Humanos
Radical Hidroxila
Lasers
Proteínas de Membrana/metabolismo
Estrutura Molecular
Oxirredução
Fotólise
Receptor do Fator de Crescimento Epidérmico/química
[Pt] Tipo de publicação:JOURNAL ARTICLE; VALIDATION STUDIES
[Nm] Nome de substância:
0 (Amino Acids); 0 (Membrane Proteins); 3352-57-6 (Hydroxyl Radical); 62229-50-9 (Epidermal Growth Factor); EC 2.7.10.1 (EGFR protein, human); EC 2.7.10.1 (Receptor, Epidermal Growth Factor)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170429
[St] Status:MEDLINE
[do] DOI:10.1021/acs.jproteome.7b00154


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[PMID]:29268102
[Au] Autor:Burgos-Castillo RC; Sirés I; Sillanpää M; Brillas E
[Ad] Endereço:Laboratory of Green Chemistry, School of Engineering Science, Lappeenranta University of Technology, Sammonkatu 12, FI-50130 Mikkeli, Finland. Electronic address: rutely.burgos.castillo@lut.fi.
[Ti] Título:Application of electrochemical advanced oxidation to bisphenol A degradation in water. Effect of sulfate and chloride ions.
[So] Source:Chemosphere;194:812-820, 2018 Mar.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Electrochemical oxidation with electrogenerated H O (EO- H O ), electro-Fenton (EF), photoelectro-Fenton (PEF) and solar PEF (SPEF) have been applied to mineralize bisphenol A solutions in 0.050 M Na SO or 0.008 M NaCl + 0.047 M Na SO at pH 3.0. The assays were performed in an undivided cell with a boron-doped diamond (BDD) anode and an air-diffusion cathode for continuous H O production. The PEF and SPEF processes yielded almost total mineralization due to the potent synergistic action of generated hydroxyl radicals and active chlorine, in conjunction with the photolytic action of UV radiation. The higher intensity of UV rays from sunlight explained the superior oxidation ability of SPEF. The effect of applied current density was studied in all treatments, whereas the role of bisphenol A concentration was examined in PEF. Bisphenol A abatement followed a pseudo-first-order kinetics, which was very quick in SPEF since UV light favored a large production of hydroxyl radicals from Fenton's reaction. Eight non-chlorinated and six chlorinated aromatics were identified as primary products in the chloride matrix. Ketomalonic, tartronic, maleic and oxalic acids were detected as final short-chain aliphatic carboxylic acids. The large stability of Fe(III)-oxalate complexes in EF compared to their fast photomineralization in PEF and PEF accounted for by the superior oxidation power of the latter processes.
[Mh] Termos MeSH primário: Compostos Benzidrílicos/química
Cloretos/farmacologia
Técnicas Eletroquímicas/métodos
Fenóis/química
Fotólise
Sulfatos/farmacologia
Poluentes Químicos da Água/química
[Mh] Termos MeSH secundário: Peróxido de Hidrogênio/química
Radical Hidroxila/química
Ferro/química
Oxirredução
Raios Ultravioleta
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Benzhydryl Compounds); 0 (Chlorides); 0 (Phenols); 0 (Sulfates); 0 (Water Pollutants, Chemical); 3352-57-6 (Hydroxyl Radical); BBX060AN9V (Hydrogen Peroxide); E1UOL152H7 (Iron); MLT3645I99 (bisphenol A)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180228
[Lr] Data última revisão:
180228
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171222
[St] Status:MEDLINE


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[PMID]:29289927
[Au] Autor:Rajeswari A; Jackcina Stobel Christy E; Pius A
[Ad] Endereço:Department of Chemistry, The Gandhigram Rural Institute - Deemed University, Gandhigram, Dindigul 624 302, Tamil Nadu, India.
[Ti] Título:New insight of hybrid membrane to degrade Congo red and Reactive yellow under sunlight.
[So] Source:J Photochem Photobiol B;179:7-17, 2018 Feb.
[Is] ISSN:1873-2682
[Cp] País de publicação:Switzerland
[La] Idioma:eng
[Ab] Resumo:A study was carried out to investigate the degradation of organic contaminants (Congo red and Reactive yellow - 105) using cellulose acetate - polystyrene (CA-PS) membrane with and without ZnO impregnation. Scanning electron microscope (SEM), electron dispersive analysis of X-rays (EDAX), Fourier transform infrared spectrometer (FTIR), atomic force microscope (AFM) and thermogravimeric analysis (TG-DTA) analysis were carried out to characterize bare and ZnO impregnated CA-PS membranes. Membrane efficiency was also tested for pure water flux and antifouling performance. The modified membrane showed almost 85% water flux recovery. Blending of ZnO nanoparticles to CA-PS matrix could decrease membrane fouling and increase permeation quality of the membrane with above 90% of photocatalytic degradation efficiency for dyes. The rate of degradation of dyes was observed using UV-Vis spectrometer. Reusability of CA-PS-ZnO membrane was studied and no significant change was noted in the degradation efficiency until fourth cycle. Langmuir-Hinshelwood kinetic model well describes the photo degradation capacity and the degradation of dyes CR and RY - 105 exhibited pseudo-first order kinetics. The regression coefficient (R) of CR and RY - 105 found to be 0.99. The novelty of the prepared CA-PS-ZnO membrane is that it has better efficiency and high thermal stability than our previously reported material. Therefore, ZnO impregnated CA-PS membrane had proved to be an innovative alternative for the degradation of CR and RY - 105 dyes.
[Mh] Termos MeSH primário: Corantes/química
Vermelho Congo/química
Nanocompostos/química
Fotólise/efeitos da radiação
Luz Solar
Óxido de Zinco/química
[Mh] Termos MeSH secundário: Catálise
Celulose/análogos & derivados
Celulose/química
Microscopia de Força Atômica
Microscopia Eletrônica de Varredura
Poliestirenos/química
Espectrofotometria
Espectroscopia de Infravermelho com Transformada de Fourier
Termogravimetria
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Coloring Agents); 0 (Polystyrenes); 3J2P07GVB6 (acetylcellulose); 3U05FHG59S (Congo Red); 9004-34-6 (Cellulose); SOI2LOH54Z (Zinc Oxide)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180223
[Lr] Data última revisão:
180223
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180101
[St] Status:MEDLINE


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[PMID]:28992485
[Au] Autor:Mercado DF; Bracco LLB; Arques A; Gonzalez MC; Caregnato P
[Ad] Endereço:Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), CCT-La Plata-CONICET, Universidad Nacional de La Plata, Casilla de Correo 16, Sucursal 4, 1900, La Plata, Argentina.
[Ti] Título:Reaction kinetics and mechanisms of organosilicon fungicide flusilazole with sulfate and hydroxyl radicals.
[So] Source:Chemosphere;190:327-336, 2018 Jan.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Flusilazole is an organosilane fungicide used for treatments in agriculture and horticulture for control of diseases. The reaction kinetics and mechanism of flusilazole with sulfate and hydroxyl radicals were studied. The rate constant of the radicals with the fungicide were determined by laser flash photolysis of peroxodisulfate and hydrogen peroxide. The results were 2.0 × 10 s M for the reaction of the fungicide with HO and 4.6 × 10 s M for the same reaction with SO radicals. The absorption spectra of organic intermediates detected by laser flash photolysis of S O with flusilazole, were identified as α-aminoalkyl and siloxyl radicals and agree very well with those estimated employing the time-dependent density functional theory with explicit account for bulk solvent effects. In the continuous photolysis experiments, performed by photo-Fenton reaction of the fungicide, the main degradation products were: (bis(4-fluorophenyl)-hydroxy-methylsilane) and the non-toxic silicic acid, diethyl bis(trimethylsilyl) ester, in ten and twenty minutes of reaction, respectively.
[Mh] Termos MeSH primário: Radical Hidroxila/química
Silanos/química
Sulfatos/química
Triazóis/química
[Mh] Termos MeSH secundário: Radicais Livres/química
Fungicidas Industriais/química
Peróxido de Hidrogênio/química
Cinética
Fotólise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Free Radicals); 0 (Fungicides, Industrial); 0 (Silanes); 0 (Sulfates); 0 (Triazoles); 3352-57-6 (Hydroxyl Radical); BBX060AN9V (Hydrogen Peroxide); F3WG2VVD87 (flusilazole)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180214
[Lr] Data última revisão:
180214
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171010
[St] Status:MEDLINE


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[PMID]:29272851
[Au] Autor:Zaheer Z
[Ad] Endereço:Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21413, Saudi Arabia. Electronic address: zzkhan@kau.edu.sa.
[Ti] Título:Biogenic synthesis, optical, catalytic, and in vitro antimicrobial potential of Ag-nanoparticles prepared using Palm date fruit extract.
[So] Source:J Photochem Photobiol B;178:584-592, 2018 Jan.
[Is] ISSN:1873-2682
[Cp] País de publicação:Switzerland
[La] Idioma:eng
[Ab] Resumo:Silver nanoparticles (AgNPs) have been synthesized via green route using an aqueous extract of Palm date fruit pericarp extract. The appearance of the yellow color and the surface resonance plasmon (SRP) band at around 400-450nm in UV-Visible spectroscopy initially reveals the formation of AgNPs. The particle size, crystalline nature, and size distribution was confirmed by scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED) ring patterns, energy dispersive X-ray spectroscopy (EDX), dynamic light scattering (DLS) techniques. The particles size ranged ca. 3nm to 30nm and are spherical in shape. The microbial activity of biogenic AgNPs was tested on clinical multiple drug resistance Staphylococcus aureus, Escherichia coli and Candida albicans reference strain. Zones of inhibition growth increases with [AgNPs]. The results suggest that the particle tested in this study certainly mediate the inhibition of bacterial and fungus growth. To overcome the serious problems related to environment like discharge of hazardous chemicals to water bodies, AgNPs have been found to be very important in the catalytic degradation of 4-nitrophenol. The rate of degradation strongly depends on the sun light exposure. Based on the chemical and kinetic studies, an attempt has been made to elucidate the mechanism of AgNPs formation.
[Mh] Termos MeSH primário: Anti-Infecciosos/síntese química
Nanopartículas Metálicas/química
Phoeniceae/química
Prata/química
[Mh] Termos MeSH secundário: Anti-Infecciosos/química
Anti-Infecciosos/farmacologia
Candida albicans/efeitos dos fármacos
Catálise
Difusão Dinâmica da Luz
Escherichia coli/efeitos dos fármacos
Frutas/química
Frutas/metabolismo
Química Verde
Nanopartículas Metálicas/toxicidade
Microscopia Eletrônica de Varredura
Nitrofenóis/química
Tamanho da Partícula
Phoeniceae/metabolismo
Fotólise/efeitos da radiação
Extratos Vegetais/química
Espectrometria por Raios X
Espectrofotometria
Staphylococcus aureus/efeitos dos fármacos
Luz Solar
Ressonância de Plasmônio de Superfície
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Anti-Infective Agents); 0 (Nitrophenols); 0 (Plant Extracts); 3M4G523W1G (Silver); Y92ZL45L4R (4-nitrophenol)
[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:171223
[St] Status:MEDLINE


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[PMID]:29241121
[Au] Autor:Udayabhanu J; Kannan V; Tiwari M; Natesan G; Giovanni B; Perumal V
[Ad] Endereço:Department of Biotechnology, Periyar University, Periyar Palkalai Nagar, Salem 636 011, Tamil Nadu, India.
[Ti] Título:Nanotitania crystals induced efficient photocatalytic color degradation, antimicrobial and larvicidal activity.
[So] Source:J Photochem Photobiol B;178:496-504, 2018 Jan.
[Is] ISSN:1873-2682
[Cp] País de publicação:Switzerland
[La] Idioma:eng
[Ab] Resumo:Textile industries release tonnes of harmful toxic dyes into the environment, causing severe effects on living organisms, including humans. Mosquitoes vectors spread important diseases which cause millions of human deaths worldwide. To control mosquitoes a number of synthetic mosquitocidal agents have been employed but all these pesticides pose harmful effects to human health and non-target species and also led to resistance development in treated vectors. Microbial strains are also developing resistance to the available antibiotics, this currently represents a major public health challenge. The current study is focused on the green synthesis of titanium dioxide nanoparticles (TiO NPs) using aqueous leaf extracts of Euphorbia hirta. Results suggested an efficient remedy for the above mentioned problems using TiO NPs against the dye degradation, mosquito larvae and bacterial pathogens. The fabrication of TiO NPs was confirmed by UV-visible spectroscopy, the biomolecules involved in the synthesis process were evidenced by Fourier transform infra-red spectroscopy (FT-IR), the crystalline structure was observed by using X-ray powder diffraction (XRD) analysis. Spherical shaped TiO NPs were recorded using field emission scanning electron microscopy (FESEM). Energy dispersive X-ray spectroscopy (EDX) results showed the elemental composition of TiO NPs. Enhanced rate of photocatalytic dye degradation efficacy was recorded in in methylene blue (95.8%) followed by crystal violet (86.7%). Antibacterial activity assays indicated growth inhibition was highest in Staphylococcus epidermidis and Proteus vulgaris. The LC of TiO NPs and E. hirta extract on Aedes aegypti larvae were 13.2mg/l and 81.2mg/l, while on Culex quinquefasciatus they were 6.89mg/l and 46.1mg/l respectively. Overall, based on the results of the present study, the green engineered nanotitania could be considered as novel and promising photocatalytic, antibacterial, and mosquitocidal agent.
[Mh] Termos MeSH primário: Anti-Infecciosos/química
Corantes/química
Nanopartículas Metálicas/química
Titânio/química
[Mh] Termos MeSH secundário: Aedes/efeitos dos fármacos
Aedes/crescimento & desenvolvimento
Animais
Anti-Infecciosos/farmacologia
Compostos Azo/química
Catálise
Escherichia coli/efeitos dos fármacos
Euphorbia/química
Euphorbia/metabolismo
Química Verde
Larva/efeitos dos fármacos
Luz
Nanopartículas Metálicas/toxicidade
Azul de Metileno/química
Fotólise/efeitos dos fármacos
Fotólise/efeitos da radiação
Extratos Vegetais/química
Folhas de Planta/química
Folhas de Planta/metabolismo
Staphylococcus aureus/efeitos dos fármacos
Staphylococcus epidermidis/efeitos dos fármacos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Anti-Infective Agents); 0 (Azo Compounds); 0 (Coloring Agents); 0 (Plant Extracts); 15FIX9V2JP (titanium dioxide); 6B4TC34456 (methyl orange); D1JT611TNE (Titanium); T42P99266K (Methylene Blue)
[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:171215
[St] Status:MEDLINE


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[PMID]:29025648
[Au] Autor:Xue H; Chen Y; Liu X; Qian Q; Luo Y; Cui M; Chen Y; Yang DP; Chen Q
[Ad] Endereço:College of Environmental Science and Engineering, Fujian Normal University, Fujian Key Laboratory of Pollution Control & Resource Reuse, Fuzhou, China.
[Ti] Título:Visible light-assisted efficient degradation of dye pollutants with biomass-supported TiO hybrids.
[So] Source:Mater Sci Eng C Mater Biol Appl;82:197-203, 2018 Jan 01.
[Is] ISSN:1873-0191
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The objective of this work was to develop a novel organic-inorganic hybrid nanomaterial from agricultural biomass waste for environmental applications. The sugarcane bagasse (SB) supported TiO hybrids were firstly synthesized via a sol-gel method. A series of characterizations were carried out to reveal the structures and components of obtained hybrids. Due to organic-inorganic hybrid (OIH) effect and element doping, the SB-TiO hybrid can expand its optical absorbance ranging from ultraviolet to visible light. The optimal hybrid catalyst prepared with SB doping amount of 2g in 100mL titanic gel and calcined at 200°C was able to degradate 95.0% methyl orange (MO) in 5h under visible light. This study will pave a new and facile pathway for novel visible light driven photocatalysts based on TiO modified by agricultural biomass waste.
[Mh] Termos MeSH primário: Corantes/química
Luz
Titânio/química
Poluentes Químicos da Água/química
[Mh] Termos MeSH secundário: Compostos Azo/química
Biomassa
Catálise
Celulose/química
Géis/química
Nanoestruturas/química
Nanoestruturas/ultraestrutura
Espectroscopia Fotoeletrônica
Fotólise/efeitos da radiação
Espectroscopia de Infravermelho com Transformada de Fourier
Termogravimetria
Difração de Raios X
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Azo Compounds); 0 (Coloring Agents); 0 (Gels); 0 (Water Pollutants, Chemical); 15FIX9V2JP (titanium dioxide); 6B4TC34456 (methyl orange); 9004-34-6 (Cellulose); 9006-97-7 (bagasse); D1JT611TNE (Titanium)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180205
[Lr] Data última revisão:
180205
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171014
[St] Status:MEDLINE


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[PMID]:29102867
[Au] Autor:Murillo-Sierra JC; Sirés I; Brillas E; Ruiz-Ruiz EJ; Hernández-Ramírez A
[Ad] Endereço:Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Av. Universidad, Ciudad Universitaria, San Nicolás de los Garza, Nuevo León, Mexico.
[Ti] Título:Advanced oxidation of real sulfamethoxazole + trimethoprim formulations using different anodes and electrolytes.
[So] Source:Chemosphere;192:225-233, 2018 Feb.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:A commercial sulfamethoxazole + trimethoprim formulation has been degraded in 0.050 M Na SO at pH 3.0 by electrochemical oxidation with electrogenerated H O (EO-H O ), electro-Fenton (EF), photoelectro-Fenton with a 6-W UVA lamp (PEF) and solar photoelectro-Fenton (SPEF). The tests were performed in an undivided cell with an IrO -based, Pt or boron-doped diamond (BDD) anode and an air-diffusion cathode for H O electrogeneration. The anode material had little effect on the accumulated H O concentration. Both drugs always obeyed a pseudo-first-order decay with low apparent rate constant in EO-H O . Much higher values were found in EF, PEF and SPEF, showing no difference because the main oxidant was always OH formed from Fenton's reaction between H O and added Fe . The solution mineralization increased in the sequence EO-H O < EF < PEF < SPEF regardless of the anode. The IrO -based and Pt anodes behaved similarly but BDD was always more powerful. In SPEF, similar mineralization profiles were found for all anodes because of the rapid removal of photoactive intermediates by sunlight. About 87% mineralization was obtained as maximum for the powerful SPEF with BDD anode. Addition of Cl enhanced the decay of both drugs due to their quicker reaction with generated active chlorine, but the formation of persistent chloroderivatives decelerated the mineralization process. Final carboxylic acids like oxalic and oxamic were detected, yielding Fe(III) complexes that remained stable in EF with BDD but were rapidly photolyzed in SPEF with BDD, explaining its superior mineralization ability.
[Mh] Termos MeSH primário: Anti-Infecciosos/química
Água Doce/química
Sulfametoxazol/química
Trimetoprima/química
Poluentes Químicos da Água/química
[Mh] Termos MeSH secundário: Boro/química
Diamante/química
Eletroquímica
Eletrodos
Compostos Férricos/química
Água Doce/análise
Peróxido de Hidrogênio/química
Oxirredução
Fotólise
Luz Solar
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Anti-Infective Agents); 0 (Ferric Compounds); 0 (Water Pollutants, Chemical); 7782-40-3 (Diamond); AN164J8Y0X (Trimethoprim); BBX060AN9V (Hydrogen Peroxide); JE42381TNV (Sulfamethoxazole); N9E3X5056Q (Boron)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180130
[Lr] Data última revisão:
180130
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171106
[St] Status:MEDLINE


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[PMID]:28988872
[Au] Autor:Zhao X; Du P; Cai Z; Wang T; Fu J; Liu W
[Ad] Endereço:College of Environmental Sciences and Engineering, Peking University, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, 100871, China; Center for Agricultural Water Research in China, China Agricultural University, Beijing 100083, China.
[Ti] Título:Photocatalysis of bisphenol A by an easy-settling titania/titanate composite: Effects of water chemistry factors, degradation pathway and theoretical calculation.
[So] Source:Environ Pollut;232:580-590, 2018 Jan.
[Is] ISSN:1873-6424
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Bisphenol A (BPA) is a widely concerned endocrine disrupting chemical and hard to be removed through conventional wastewater treatment processes. In this study, we developed a TiO decorated titanate nanotubes composite (TiO /TNTs) and used for photocatalytic degradation of BPA. TEM and XRD analysis show that the TiO /TNTs is a nano-composite of anatase and titanate, with anatase acting as the primary photocatalytic site and titanate as the skeleton. TiO /TNTs exhibited excellent photocatalytic reactivity and its easy-settling property leaded to good reusability. After 5 reuse cycles, TiO /TNTs also could photo-degrade 91.2% of BPA with a high rate constant (k ) of 0.039 min , which was much better than TiO and TNTs. Higher pH facilitated photocatalysis due to more reactive oxygen species produced and less material aggregation. The presence of NaCl and CaCl showed negligible effects on BPA degradation, but NaHCO caused an inhibition effect resulting from consumption of ·OH. Humic acid inhibited degradation mainly due to blockage of the active sites of TiO /TNTs. Degradation pathway was well interpreted through theoretical calculation. Hydroxyl radical played the dominate role in BPA photodegradation, and the atoms of BPA with high Fukui index based on density-functional theory (DFT) calculation are the radical easy-attacking (f ) sites. Considering the good photocatalytic reactivity, reusability, stability and settle property, TiO /TNTs promises to be an efficient alternative for removal of organic compounds from wastewaters.
[Mh] Termos MeSH primário: Compostos Benzidrílicos/química
Fenóis/química
Fotólise
Titânio/química
Poluentes Químicos da Água/química
[Mh] Termos MeSH secundário: Disruptores Endócrinos/química
Modelos Químicos
Nanotubos/química
Água
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Benzhydryl Compounds); 0 (Endocrine Disruptors); 0 (Phenols); 0 (Water Pollutants, Chemical); 059QF0KO0R (Water); 15FIX9V2JP (titanium dioxide); D1JT611TNE (Titanium); MLT3645I99 (bisphenol A)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180119
[Lr] Data última revisão:
180119
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171010
[St] Status:MEDLINE


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[PMID]:29199220
[Au] Autor:Kohiki T; Nishikawa Y; Inokuma T; Shigenaga A; Otaka A
[Ad] Endereço:Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University.
[Ti] Título:Chemical Synthetic Platform for Chlorpromazine Oligomers That Were Reported as Photo-degradation Products of Chlorpromazine.
[So] Source:Chem Pharm Bull (Tokyo);65(12):1161-1166, 2017.
[Is] ISSN:1347-5223
[Cp] País de publicação:Japan
[La] Idioma:eng
[Ab] Resumo:A synthetic platform for chlorpromazine (CPZ) oligomers, which could be generated via photo-reaction of CPZ, is essential to promote their biological and structural studies. In this paper, the first synthetic platform for CPZ oligomers is described. A photo-irradiation experiment of CPZ to confirm whether the structure of the CPZ dimer generated by the photo-irradiation was identical to that prepared by our synthetic method is also reported.
[Mh] Termos MeSH primário: Clorpromazina/química
[Mh] Termos MeSH secundário: Clorpromazina/síntese química
Cromatografia Líquida de Alta Pressão
Dimerização
Isomerismo
Espectrometria de Massas
Fotólise/efeitos da radiação
Polimerização/efeitos da radiação
Raios Ultravioleta
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
U42B7VYA4P (Chlorpromazine)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180110
[Lr] Data última revisão:
180110
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171205
[St] Status:MEDLINE
[do] DOI:10.1248/cpb.c17-00692



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