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29,143 Newest Publications about the topic water
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DFT Characterization on the Mechanism of Water Splitting Catalyzed by Single-Ru-substituted Polyoxometalates
22-05-2013 | Zhongmin Su; Wei Guan; Zhong-Ling Lang; Guochun Yang; Nana Ma; Shizheng Wen; Li-Kai Yan, Dalton Transactions, 2013
Water oxidation is a key half reaction in energy conversion scheme. The reaction mechanism for the oxidation of H2O to O2 catalyzed by single-Ru-substituted polyoxometalates, [RuIII(H2O)XW11O39]n– (X = SiIV, GeIV), was investigated by the means of density functional calculations. The ...
Synergistic Dual Activation Catalysis by Palladium Nanoparticles for Epoxide Ring Opening with Phenols
22-05-2013 | Asit Chakraborti; Kapileswar Seth; Sudipta Raha Roy; Bhavin V. Pipaliya, Chemical Communication, 2013
Synergistic dual activation catalysis has been devised for epoxide phenolysis wherein palladium nanoparticles induce electrophilic activation via coordination with the epoxide oxygen followed by nucleophilic activation through anion-π interaction with the aromatic ring of the phenol and water ...
Structural Properties of Trans Hydrido-Hydroxo M(H)(OH)(NH2CMe2CMe2NH2)(PPh3)2 (M =Ru, Os) Complexes and their Proton Exchange Behaviour with Water in Solution
22-05-2013 | R H Morris; Demyan E Prokopchuk; Alan Lough; Alba Collado, Dalton Transactions, 2013
We report the synthesis of Ru(II) and Os(II) trans hydrido-hydroxo complexes by reacting the unsaturated amido complexes MH(NHCMe2CMe2NH2)(PPh3)2 (M = Ru, Os) with stoichiometric amounts of water. Proton exchange is rapid at room temperature between the amine/water/hydroxide moieties which ...
QM/MM investigation on 1,3-dipolar cycloadditions of phthalazinium dicyanomethanide with three different dipolarophiles on water and in solutions
22-05-2013 | Xin Yang; Ying Xue, Physical Chemistry Chemical Physics, 2013
An “on water” environment, describing the reactions with insoluble reactants in water, has been reported to give high yields of products compared to organic solvents. The 1,3-dipolar cycloadditions of the phthalazinium dicyanomethanide 1 with three different dipolarophiles, methyl vinyl ...
Constructing inverse opal structured hematite photoanodes via electrochemical process and their application to photoelectrochemical water splitting
22-05-2013 | Jong Hyeok Park; Xin-Jian Shi; Kan Zhang; Kahee Shin; Jun Hyuk Moon; Tae-Woo Lee, Physical Chemistry Chemical Physics, 2013
In this study, we constructed an inverse opal structured hematite (IOS α-Fe2O3) as the photoanode of photoelectrochemical (PEC) cell for efficient solar water splitting via a simple electrochemical process. At the same time a series of affecting factors (template particle size, ...
Photocatalytic Water Gas Shift using visible or simulated solar light for the efficient, room-temperature hydrogen generation
22-05-2013 | Francesc Sastre; Marica Oteri; Avelino Corma; Hermenegildo Garcia, Energy & Environmental Science, 2013
Gold nanoparticles supported on P25 TiO2 is a highly efficient photocatalyst to promote the simultaneous H2O reduction to H2 and CO oxidation to CO2. This photocatalytic process can be performed using simulated solar light as well as light from a LED quasi monochromatic centred at 450 nm, ...
Optical characterization of Prodan aggregates in water medium
22-05-2013 | Cintia Cristina Vequi-Suplicy; Kaline Coutinho; M. Teresa Lamy, Physical Chemistry Chemical Physics, 2013
The fluorescent probe Prodan (2-dimethylamino-6-propionylnaphthalene) has been widely used in biological systems, mainly due to the high sensitivity of its emission spectrum to the medium polarity. Though highly hydrophobic, in lipid dispersions Prodan partitions in water, mainly in the ...
Remarkably Enhanced Photocatalytic Activity of Laser Ablated Au Nanoparticles Decorated BiFeO3 Nanowires under Visible-light
22-05-2013 | Shun Li; Jianming Zhang; Kibria Md. Golam; Z. Mi; Mohamed Chaker; Dongling Ma; Riad Nechache; Federico Rosei, Chemical Communication, 2013
Hybrid photocatalysts consisting of single crystalline BiFeO3 nanowires and laser ablated Au nanoparticles were synthesized by a functionalization-step-free solution process. The 1.0 wt% Au nanoparticles decorated BiFeO3 nanowires exhibit ~30 times higher photocatalytic activity of water ...
Tropical high-altitude Andes lakes located above the tree line attenuate more strongly UV-A radiation than typical temperate alpine lakes Tropical high Andes lakes in the Bolivian cordillera exhibit stronger Ultraviolet Radiation-A attenuation (Kd range = 1.4-11.0 m; Z1% depth range = 0.4-3.2 m) than most typical temperate alpine lakes (Kd range = 1-6 m; Z1% depth range = 3-45).
22-05-2013 | Ximena del Carmen Aguilera; Jorge Santiago Coronel; Xavier T. Lazzaro, Photochemical & Photobiological Sciences, 2013
Tropical high Andes lakes (≥ 4.000 m a.s.l.) are physically harsh ecosystems. By their location above the treeline, they share common features with temperate alpine lakes, which impose extreme conditions on their aquatic organisms: e.g., broad nychtemeral variations in water temperature, ...
Highly reactive (< 1 min) ratiometric “naked eye” detection of hypochlorite with real application in tap water
22-05-2013 | Shyamaprosad Goswami; Sima Paul; Abhishek Manna, Dalton Transactions, 2013
The de-diaminemaleonitrile reaction in a simple carbazole diaminemaleonitrile hybrid (CDH) was promoted by OCl- which ruptured the ICT mechanism by breaking the donor and acceptor linkage. This system utilized an irreversible OCl- promoted oxidation reaction and it responded instantaneously ...
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