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Showing 1-30 of 52 results for "185787" within Papers
Wanying Li et al.
Mikrochimica acta, 187(6), 328-328 (2020-05-15)
Based on a detailed study of the hydrolysis process of tetrabutyl orthotitanate (TBOT), TiO2 nanoclusters were modified inside the pores of SiO2 core-shell particles instead of the outside. The pore size distribution of SiO2 core-shell spheres modified with TiO2 (SiO2@dSiO2@TiO2) was
M R Bayati et al.
Journal of physics. Condensed matter : an Institute of Physics journal, 24(39), 395005-395005 (2012-09-04)
We show that pure rutile TiO(2) can be photo-responsive even under low energy visible light after annealing in vacuum where we envisage that the point defects, i.e. oxygen vacancies and titanium interstitials, serve an important role. In this study, single
Z Y Bian et al.
Water science and technology : a journal of the International Association on Water Pollution Research, 67(8), 1873-1879 (2013-04-13)
A Pd/C gas-diffusion cathode which generated H2O2 through a two-electron reduction process of fed oxygen molecule was used to degrade 4-chlorophenol in an undivided electrolysis device. The kinetics of 4-chlorophenol degradation has been investigated by the electrochemical oxidation processes. By
Mir Mahdi Abolghasemi et al.
Journal of separation science, 37(23), 3526-3532 (2014-09-13)
A fiber-coated polypyrrole-montmorillonite nanocomposite was prepared for solid-phase microextraction. The fiber coating can be prepared easily; it is mechanically stable and exhibits relatively high thermal stability. The prepared fiber was evaluated for the extraction of some phenolic compounds from aqueous
Agustina Manassero et al.
Environmental science and pollution research international, 22(2), 926-937 (2014-03-14)
A kinetic study of the photocatalytic degradation of the pharmaceutical clofibric acid is presented. Experiments were carried out under UV radiation employing titanium dioxide in water suspension. The main reaction intermediates were identified and quantified. Intrinsic expressions to represent the
Praveena Juliya Dorathi et al.
Journal of environmental sciences (China), 24(4), 765-773 (2012-08-17)
Laboratory studies were conducted to find out the efficacy of uniquely prepared zero valent iron impregnated silica in transforming xenobiotic chlorophenols namely 4-chlorophenol, 2,4-dichlorophenol and 2,4,6-trichlorophenol. Continuous mode column experiments were performed to investigate the transformation of chlorophenols by varying
Soonhyun Kim et al.
The journal of physical chemistry. B, 109(11), 5143-5149 (2006-07-26)
The visible-light-induced degradation reaction of 4-chlorophenol (4-CP) was investigated in aqueous suspension of pure TiO2. Contrary to common expectations, 4-CP could be degraded under visible illumination (lambda > 420 nm), generating chlorides and CO2 concomitantly. The observed visible reactivity was
Qing Wen et al.
Journal of hazardous materials, 244-245, 743-749 (2012-11-28)
Bioelectrochemical systems (BESs), such as microbial fuel cells (MFCs) and microbial electrolysis cells (MECs), are generally regarded as a promising key technology to effectively treat wastewater and better exploit the renewable resource. This study explored the use of a BES
Xing-long Jin et al.
Water science and technology : a journal of the International Association on Water Pollution Research, 67(10), 2190-2194 (2013-05-17)
This study focused on the degradation and toxicity change of 4-chlorophenol (4-CP) in aqueous solution by contact glow discharge electrolysis (CGDE) with and without Fe(2+). It was found that the addition of Fe(2+) increased the degradation rate of 4-CP and
Radiolytic and TiO2-assisted photocatalytic degradation of 4-chlorophenol. A comparative study.
Stafford U, et al.
The Journal of Physical Chemistry, 98(25), 6343-6351 (1994)
Giorgio Ottaviani et al.
Journal of medicinal chemistry, 50(4), 742-748 (2007-02-16)
The development of in silico and in vitro tools to estimate or predict the passive human skin permeation and distribution of new chemical entities, useful in dermal drug delivery, in absorption studies of toxic compounds, and in the cosmetics industry
Marie Bank Nielsen et al.
Biodegradation, 24(1), 79-87 (2012-06-09)
A gram-positive bacterium Citricoccus nitrophenolicus (strain PNP1(T), DSM 23311(T), CCUG 59571(T)) isolated from a waste water treatment plant was capable of effectively degrading p-nitrophenol (pNP) as a source of carbon, nitrogen and energy for growth. Degradation of pNP required oxygen
Modeling and Application of a Rapid Fluorescence-Based Assay for Biotoxicity in Anaerobic Digestion.
Jian Lin Chen et al.
Environmental science & technology, 49(22), 13463-13471 (2015-10-13)
The sensitivity of anaerobic digestion metabolism to a wide range of solutes makes it important to be able to monitor toxicants in the feed to anaerobic digesters to optimize their operation. In this study, a rapid fluorescence measurement technique based
En Han et al.
Analytical biochemistry, 486, 102-106 (2015-07-15)
A sensitive and simple amperometric biosensor for phenols was developed based on the immobilization of tyrosinase into CdS quantum dots/chitosan nanocomposite matrix. The nanocomposite film with porous nanostructure, excellent hydrophilicity and biocompatibility resulted in high enzyme loading, and the tyrosinase
Ho-Sang Shin et al.
Chemosphere, 174, 157-164 (2017-02-06)
Seven halogenated volatile organic compounds (HVOCs) and two haloacetic acids were detected and quantified in 15 household products, including sodium hypochlorite, by gas chromatography-mass spectrometry (GC-MS). Chloroform was detected in a range of 0.2-30.2 mg kg-1 in all products, and carbon tetrachloride
Giulia Caron et al.
Journal of medicinal chemistry, 48(9), 3269-3279 (2005-04-29)
Growing interest in the use of both the logarithm of the partition coefficient of the neutral species in the alkane/water system (log P(N)(alk)) and the difference between log P(N)(oct) (the logarithm of the partition coefficient of the neutral species in
Bofan Yu et al.
Journal of chromatography. A, 1356, 221-229 (2014-07-07)
For the expanded application area, fast trace analysis of certain high boiling point (i.e., 150-250 °C) volatile organic compounds (HVOCs) in water, a large volume-direct aqueous injection-gas chromatography (LV-DAI-GC) method was optimized for the following parameters: packed sorbent for sample
Fuyuan Xu et al.
Environmental science & technology, 46(8), 4576-4582 (2012-03-23)
A novel Ni-Fe bimetal with high dechlorination activity for 4-chlorophenol (4-CP) was prepared by ball milling (BM) in this study. Increasing Ni content and milling time greatly enhanced the dechlorination activity, which was mainly attributed to the homogeneous distribution of
Lejin Xu et al.
Environmental science & technology, 46(18), 10145-10153 (2012-08-29)
Magnetic nanoscaled Fe(3)O(4)/CeO(2) composite was prepared by the impregnation method and characterized as a heterogeneous Fenton-like catalyst for 4-chlorophenol (4-CP) degradation. The catalytic activity was evaluated in view of the effects of various processes, pH value, catalyst addition, hydrogen peroxide
Ik-Hwan Um et al.
The Journal of organic chemistry, 78(17), 8689-8695 (2013-08-07)
This paper comprises results of our investigation of the α-effect phenomenon for the reaction of O-p-nitrophenyl thionobenzoate (PNPTB) with butane-2,3-dione monoximate (Ox(-), α-nucleophile) and p-chlorophenoxide (p-ClPhO(-), normal-nucleophile) in DMSO-H2O mixtures of varying compositions at 15.0 °C, 25.0 °C, and 35.0
Yuzo Suzuki et al.
Environmental toxicology and chemistry, 31(5), 1072-1075 (2012-03-27)
The degradation of 2-chloro-4,5-O-(4'-methyl-7', 8'-diphenyl)ether (CMDPE), an analog of 2,7-dichlorodibenzo-p-dioxin (2,7-DCDD), mediated by Geobacillus sp. UZO 3 cell-free extract was monitored. Ethyl acetate extracts of a complete reaction mixture incubated at 65°C for 18 h were analyzed either by thin
Chen Fan et al.
Food chemistry, 174, 446-451 (2014-12-23)
In-situ ionic liquid-dispersive liquid-liquid microextraction (IL-DLLME) method was developed as a pretreatment method for the detection of six chlorophenols (CPs) in honey samples. The hydrophobic ionic liquid [C4MIM][NTf2], formed in-situ by the hydrophilic ionic liquid [C4MIM][BF4] and the ion exchange
M Gómez et al.
Environmental technology, 33(7-9), 1055-1064 (2012-06-23)
Chlorophenols are well-known priority pollutants and many different treatments have been assessed to facilitate their removal from industrial wastewater. However, an absolute and optimum solution still has to be practically implemented in an industrial setting. In this work, a series
Ayyappan Ramakrishnan et al.
Chemical communications (Cambridge, England), 48(68), 8556-8558 (2012-07-21)
Benzene can be activated by visible light (λ > 455 nm) in the presence of TiO(2), which leads to formation of carbonaceous polymeric deposits on the titania surface. These photosynthesized surface-modified materials exhibit enhanced photoactivity in degradation of phenolic compounds
Mir Ali Farajzadeh et al.
Biomedical chromatography : BMC, 29(12), 1921-1931 (2015-05-28)
In present study, a simultaneous derivatization and air-assisted liquid-liquid microextraction method combined with gas chromatography-nitrogen phosphorous detection has been developed for the determination of some phenolic compounds in biological samples. The analytes are derivatized and extracted simultaneously by a fast
Cynthia D Selassie et al.
Journal of medicinal chemistry, 48(23), 7234-7242 (2005-11-11)
In this comprehensive study on the caspase-mediated apoptosis-inducing effect of 51 substituted phenols in a murine leukemia cell line (L1210), we determined the concentrations needed to induce caspase activity by 50% (I50) and utilized these data to develop the following
Cuicui Qiu et al.
Colloids and surfaces. B, Biointerfaces, 103, 129-135 (2012-12-04)
A facile electrodeposition method was used to fabricate nanostructured Au thin films. Construction of the amperometric biosensors for 4-chlorophenol (4-CP) is based on the immobilization of horseradish peroxidase (HRP) on the Au thin films via a simple method. The as-prepared
Kais Elghniji et al.
Journal of environmental sciences (China), 24(3), 479-487 (2012-06-05)
A series of phosphorus-modified titanium dioxide samples with varying P/Ti atomic ratio were conveniently prepared via a conventional solgel route. The effects of phosphorus content and calcination temperature on the crystalline structure, grain growth, surface area, and the photocatalytic activity
Photomineralisation of 4-chlorophenol sensitised by TiO2 thin films
Mills A and Wang J
Journal of Photochemistry and Photobiology A: Chemistry, 118, 53-63 (1998)
Sárka Paušová et al.
Environmental science and pollution research international, 19(9), 3709-3718 (2012-10-12)
Efficient immobilization of TiO(2) nanoparticles on the surface of Mg(2)Al-LDH nanosheets was performed by delamination/restacking process. EXPERIMENTAL PART: The structural and textural properties of as-prepared nanocomposite were deeply analyzed using different solid-state characterization techniques such as: X-ray powder diffraction, Fourier
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