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https://www.readbyqxmd.com/read/28734221/treatment-of-highly-toxic-cardboard-plant-wastewater-by-a-combination-of-electrocoagulation-and-electrooxidation-processes
#1
Erhan Gengec
The objective of this study was to investigate the removal efficiencies of the electrochemical treatment systems as an alternative for the treatment of cardboard plant wastewater (CPW). In accordance with this purpose, CPW was treated by electrocoagulation (EC) with Al electrodes and the effects of current density (CD), operating time (t), and initial pH (pHi) were investigated. The results showed that EC at optimum treatment conditions (CD: 7.5mA/cm(2), pHi: 7.0 and t: 60min) have limited removal efficiencies for total organic carbon (TOC; 17...
July 19, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28732394/surface-charge-effects-on-the-electro-orientation-of-insulating-boron-nitride-nanotubes-in-aqueous-suspension
#2
Semih Cetindag, Bishnu Tiwari, Dongyan Zhang, Yoke Khin Yap, Sangil Kim, Jerry W Shan
The alignment of hexagonal boron-nitride nanotubes (BNNTs) in aqueous KCl solutions under spatially uniform electric fields was examined experimentally, using direct optical visualization to probe the orientation dynamics of individual BNNTs for different electric-field frequencies. Different from most previously studied nanowires and nanotubes, BNNTs are wide-bandgap materials which are essentially insulating at room temperature. We analyze the electro-orientation of BNNTs in the general context of polarizable cylindrical particles in liquid suspensions, whose behavior can fall into different regimes, including alignment due to Maxwell-Wagner induced dipoles at high frequencies, and alignment due to fluid motion of the electrical double layer around the particles at lower frequencies...
May 29, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28732314/the-effect-of-low-dose-furosemide-in-critically-ill-patients-with-early-acute-kidney-injury-a-pilot-randomized-blinded-controlled-trial-the-spark-study
#3
Sean M Bagshaw, R T Noel Gibney, Peter Kruger, Imran Hassan, Finlay A McAlister, Rinaldo Bellomo
PURPOSE: Furosemide is commonly prescribed in acute kidney injury (AKI). Prior studies have found conflicting findings on whether furosemide modifies the course and outcome of AKI. METHODS: Pilot multi-center randomized blinded placebo-controlled trial in adult patients with AKI admitted to three intensive care units. Participants were randomly allocated to furosemide bolus and infusion or 0.9% saline placebo. Primary endpoint was worsening AKI, defined by the RIFLE criteria...
July 12, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28732164/electrochemical-intercalation-of-mg-2-into-anhydrous-and-hydrated-crystalline-tungsten-oxides
#4
Ruocun Wang, Ching-Chang Chung, Yang Liu, Jacob L Jones, Veronica Augustyn
The reversible intercalation of multivalent cations, especially Mg(2+), into a solid-state electrode is an attractive mechanism for next-generation energy storage devices. These reactions typically exhibit poor kinetics due to a high activation energy for interfacial charge-transfer and slow solid-state diffusion. Interlayer water in V2O5 and MnO2 has been shown to improve Mg(2+) intercalation kinetics in non-aqueous electrolytes. Here, the effect of structural water on Mg(2+) intercalation in non-aqueous electrolytes is examined in crystalline WO3 and the related hydrated and layered WO3·nH2O (n = 1, 2)...
July 21, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28732139/advances-in-electrocatalysis-for-energy-conversion-and-synthesis-of-organic-molecules
#5
Yaovi Holade, Karine Servat, Sophie Tingry, Teko W Napporn, Hynd Remita, David Cornu, Kouakou Boniface Kokoh
The ubiquitous electrochemistry is expected to play a major role for reliable energy, and for production of sustainable fuels and chemicals. For organics-based electrocatalysis in an alkaline medium, the fundamental understandings at solid-liquid interfaces involve relatively complex mechanisms and performance descriptors (from the electrolyte and reaction intermediates), which undermine the roads towards advance and breakthroughs. Here, we review and diagnose recently designed strategies for the electrochemical conversion of organics into electricity or high added- value chemicals, and likely both...
July 21, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28731713/revealing-the-electrochemical-charging-mechanism-of-nano-sized-li2s-by-in-situ-and-operando-x-ray-absorption-spectroscopy
#6
Liang Zhang, Dan Sun, Jun Feng, Elton J Cairns, Jinghua Guo
Lithium sulfide (Li2S) is a promising cathode material for lithium/sulfur (Li/S) cells due to its high theoretical specific capacity (1166 mAh g(-1)) and capability to pair with non-metallic lithium anodes to avoid potential safety issues. However, when used as the cathode a high charging voltage (~ 4 V vs. Li+/Li) is always necessary to activate Li2S in the first charge process, and the voltage profile becomes similar to that of a common sulfur electrode in the following charge processes. In this report, we have prepared an electrode of nano-sphere Li2S particles and investigated its charging mechanism of the initial two charge processes by in-situ and operando X-ray absorption spectroscopy...
July 21, 2017: Nano Letters
https://www.readbyqxmd.com/read/28731629/stabilizing-the-performance-of-high-capacity-sulfur-composite-electrodes-by-a-novel-gel-polymer-electrolyte-configuration
#7
Marco Agostini, Du Hyun Lim, Matthew Sadd, Fasciani Chiara, Maria Assunta Navarra, Stefania Panero, Sergio Brutti, Aleksandar Matic, Bruno Scrosati
Increased pollution and the consequent increasing in global warming are drawing attention to the larger use of renewable energy sources such as solar or wind. However, the production of energy from most renewable sources is intermittent and thus relies on the availability of electrical energy storage systems with high capacity and at competitive cost. Lithium-sulfur batteries are among the most promising technologies in this respect due to a very high theoretical energy density (1675 mAh g-1) and that the active material, S, is abundant and cheap...
July 21, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28731319/few-layered-mo-1-x-wxs2-hollow-nanospheres-on-ni3s2-nanorods-heterostructure-as-robust-electrocatalysts-for-overall-water-splitting
#8
Meiyong Zheng, Jing Du, Baopu Hou, Cai-Ling Xu
Owing to the unique optical, electronic and catalytic properties, MoS2 have received increasing interests in electrochemical water splitting. Herein, few-layered Mo(1-x)WxS2 hollow nanospheres modified Ni3S2 heterostructures are prepared through a facile hydrothermal method to further enhance the electro-catalytic performance of MoS2. The doping of W element optimizes the electronic structure of MoS2@Ni3S2, thus improves the conductivity and charge transfer ability of MoS2@Ni3S2. In addition, benefiting from the few-layered hollow structure of Mo(1-x)WxS2, the strong electronic interactions between Mo(1-x)WxS2 and Ni3S2, and the hierarchical structure of 1D nanorods and 3D Ni foam, massive active sites and fast ion and charge transportion are obtained...
July 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28731317/air-stable-self-bleaching-electrochromic-device-based-on-viologen-and-ferrocene-containing-triflimide-redox-ionic-liquids
#9
Bruno Gélinas, Dyuman Das, Dominic Rochefort
We demonstrate an electrochromic device with self-bleaching ability that uses ethyl viologen- ([EV](2+)) and ferrocene-based redox ionic liquids ([FcNTf](-)) as the electroactive species. These electroactive compounds are insensitive to atmospheric O2 and H2O in both their oxidized and reduced states once dissolved in a typical ionic liquid electrolyte ([BMIm][NTf2]), allowing for the device to be assembled outside a glovebox without any encapsulation. This device could generate a deep blue color by applying a 2...
July 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28731110/a-redox-controlled-electrolyte-for-plasmonic-enhanced-dye-sensitized-solar-cells
#10
Yuqiao Fu, Siu-Pang Ng, Guangyu Qiu, Tak-Fu Hung, Chi-Man Lawrence Wu, Chun-Sing Lee
Plasmonic enhanced dye-sensitized solar cells (DSSCs) with metallic nanostructures suffer from corrosion problems, especially with the presence of the iodine/triiodide redox couple in the electrolyte. Herein, we introduce an alternative approach by compensating the corrosion with a modified liquid electrolyte. In contrast to the existing method of surface preservation for plasmonic nanostructures, the redox-controlled electrolyte (RCE) contains iodoaurate intermediates, i.e. gold(i) diiodide (AuI2(-)) and gold(iii) tetraiodide (AuI4(-)) with optimal concentrations, such that these intermediates are readily reduced to gold nanoparticles during the operation of DSSCs...
July 21, 2017: Nanoscale
https://www.readbyqxmd.com/read/28730818/nanoscale-mechanics-of-the-solid-electrolyte-interphase-on-lithiated-silicon-electrodes
#11
Haoran Wang, Huck Beng Chew
The ~300% volume changes of lithiated silicon electrodes (LixSi) during electrochemical cycling lead to cracking of the solid electrolyte interface (SEI). Here, we report how strain is transferred from LixSi to two primary inorganic SEI components: LiF and Li2O. Our first principle calculations show that LiF, effectively bonded on LixSi at x > 1, enables the entire interface structure to deform plastically by forming delocalized stable voids. In contrast, Li2O tightly bonded to LixSi is stiffer, and deforms rigidly across all x...
July 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28730817/efficient-solid-state-electrochemiluminescence-from-high-quality-perovskite-quantum-dot-films
#12
Jingjing Xue, Ziyi Zhang, Fenfen Zheng, Qin Xu, Jinchun Xu, Guizheng Zou, Lingling Li, Jun-Jie Zhu
Halide perovskite materials have emerged as a new class of revolutionary photovoltaic and optoelectronic nanomaterials. However, the study on electrochemiluminescence (ECL) from halide perovskite nanomaterials is still in its infancy due to their instability, sensitivity, and difficulties in purification and film formation. Here we propose a scraping coating method for the fabrication of high-quality halide perovskite quntum dot (QD) film on electrode, which shows dense and uniform packing with minimum grain size...
July 21, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28730291/electrolyte-disorders-with-platinum-based-chemotherapy-mechanisms-manifestations-and-management
#13
REVIEW
Bryan Oronsky, Scott Caroen, Arnold Oronsky, Vaughn E Dobalian, Neil Oronsky, Michelle Lybeck, Tony R Reid, Corey A Carter
Platinum chemotherapy, particularly cisplatin, is commonly associated with electrolyte imbalances, including hypomagnesemia, hypokalemia, hypophosphatemia, hypocalcemia and hyponatremia. The corpus of literature on these dyselectrolytemias is large; the objective of this review is to synthesize the literature and summarize the mechanisms responsible for these particular electrolyte disturbances in the context of platinum-based treatment as well as to present the clinical manifestations and current management strategies for oncologists and primary care physicians, since the latter are increasingly called on to provide care for cancer patients with medical comorbidities...
July 20, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28730204/electronic-and-charge-transfer-properties-of-bio-inspired-flavylium-ions-for-applications-in-tio2-based-dye-sensitized-solar-cells
#14
Giuseppe Calogero, Ilaria Citro, Gaetano Di Marco, Stefano Caramori, Laura Casarin, Carlo Alberto Bignozzi, João Avó, A Jorge Parola, Fernando Pina
We present here a complete study on four synthetic environmentally friendly flavylium salts employed as sensitizers for dye-sensitized solar cells (DSSCs). The effect of several donor groups on the molecular structure of flavylium ions was investigated by combining electrochemical, spectroscopic and computational means. The computational investigation indicated that these molecules can interact strongly with the TiO2 surface by a single OH group of the dihydroxybenzene moiety, and can efficiently inject electrons into the TiO2 following the excitation of their lowest singlet states exhibiting charge transfer (CT) character...
July 21, 2017: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/28730189/solvent-gated-thin-film-transistors
#15
Kyriaki Manoli, Preethi Seshadri, Mandeep Singh, Cinzia Di Franco, Angelo Nacci, Gerardo Palazzo, Luisa Torsi
Electrical double layer (EDL) thin film transistors (TFTs) are an interesting class of transistors that use an electrolyte as the gating medium. Recently it has been demonstrated that pure organic solvents can also be used as gating media for TFTs without the addition of exogenous electrolytes. Here we present a systematic study of the performances of TFTs based on two different semiconductors (P3HT and ZnO) gated through nine different solvents either pure or loaded with NaCl. The nature of the solvent impacts the transfer characteristics of the TFT through a change in the gating capacitance while the threshold voltage remains unaffected...
July 21, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28729970/severe-cyclophosphamide-related-hyponatremia-in-a-patient-with-acute-glomerulonephritis
#16
Pasquale Esposito, Maria Valentina Domenech, Nicoletta Serpieri, Marta Calatroni, Ilaria Massa, Alessandro Avella, Edoardo La Porta, Luca Estienne, Elena Caramella, Teresa Rampino
Cyclophosphamide is frequently used to treat cancer, autoimmune and renal diseases, such as rapidly progressive glomerulonephritis. Its side effects are well-known, including bone marrow depression, infections, alopecia, sterility, bladder malignancy and hemorrhagic cystitis. Moreover, in some cases cyclophosphamide use has been related to the onset of hyponatremia, by development of a syndrome of inappropriate antidiuresis. Indeed, severe hyponatremia has been previously reported in patients treated with high-dose or moderate-dose of intravenous cyclophosphamide, while only few cases have been reported in patients treated with low dose...
July 6, 2017: World Journal of Nephrology
https://www.readbyqxmd.com/read/28729743/superconformal-bottom-up-gold-deposition-in-high-aspect-ratio-through-silicon-vias
#17
D Josell, T P Moffat
This work presents superconformal, bottom-up Au filling of high aspect ratio through silicon vias (TSVs) along with a predictive framework based on the coupling of suppression breakdown and surface topography. The work extends a previous study of superconformal Au deposition in lower aspect ratio TSVs. Deposition was performed in a Na3AuSO3 electrolyte containing a branched polyethyleneimine (PEI) deposition-rate suppressing additive. Voltammetric measurements using a rotating disk electrode (RDE) were used to assess the impact of the PEI suppressor concentration and transport on the rate of metal deposition, enabling the interplay between metal deposition and suppressor adsorption to be quantified...
2017: Journal of the Electrochemical Society
https://www.readbyqxmd.com/read/28729506/highly-elastic-binders-integrating-polyrotaxanes-for-silicon-microparticle-anodes-in-lithium-ion-batteries
#18
Sunghun Choi, Tae-Woo Kwon, Ali Coskun, Jang Wook Choi
Lithium-ion batteries with ever-increasing energy densities are needed for batteries for advanced devices and all-electric vehicles. Silicon has been highlighted as a promising anode material because of its superior specific capacity. During repeated charge-discharge cycles, silicon undergoes huge volume changes. This limits cycle life via particle pulverization and an unstable electrode-electrolyte interface, especially when the particle sizes are in the micrometer range. We show that the incorporation of 5 weight % polyrotaxane to conventional polyacrylic acid binder imparts extraordinary elasticity to the polymer network originating from the ring sliding motion of polyrotaxane...
July 21, 2017: Science
https://www.readbyqxmd.com/read/28728410/microbial-electrolytic-capture-separation-and-regeneration-of-co2-for-biogas-upgrading
#19
Xiangdan Jin, Yifeng Zhang, Xiaohu Li, Nannan Zhao, Irini Angelidaki
Biogas upgrading to natural gas quality is essential for the efficient use of biogas in various applications. Carbon dioxide (CO2) which constitutes a major part of the biogas is generally removed by physicochemical methods. However, most of the methods are expensive and often present environmental challenges. In this study, an innovative microbial electrolytic system was developed to capture, separate and regenerate CO2 for biogas upgrading without external supply of chemicals, and potentially to treat wastewater...
July 21, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28728113/catalase-based-hydrogen-peroxide-biosensor-for-mercury-determination-by-inhibition-measurements
#20
Basant Elsebai, Mariana Emilia Ghica, Mohammed Nooredeen Abbas, Christopher M A Brett
A new amperometric hydrogen peroxide enzyme inhibition biosensor for the indirect determination of toxic mercury ions, Hg(2+), based on catalase immobilized on a glassy carbon electrode surface by cross-linking with glutaraldehyde and bovine serum albumin, is reported. The parameters influencing biosensor performance were optimized, including enzyme loading, the amount of hydrogen peroxide, the applied potential and electrolyte pH. It was shown that the inhibition of catalase by Hg(2+) species is irreversible, with a linear inhibition response between 5×10(-11) and 5×10(-10)M...
July 11, 2017: Journal of Hazardous Materials
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