Results 1 to 10 of about 549,625 (269)
Photoaccelerated Water Dissociation Across One-Atom-Thick Electrodes. [PDF]
Nano Lett, 2022 أظهرت التجارب الحديثة أن تفكك الماء السطحي (⇆H2O H++ OH -) يمكن تسريعه أسيًا بواسطة مجال كهربائي مطبق على أقطاب الجرافين، وهي ظاهرة مرتبطة بتأثير فيينا. هنا نبلغ عن تسارع من حيث الحجم لتفاعل تفكك الماء السطحي تحت إضاءة الضوء المرئي. ويرافق هذه العملية فصل مكاني للبروتونات وأيونات الهيدروكسيد عبر جرافين سميك بذرة واحدة وتعززها مجالات كهربائية قوية بينية.
Cai J +8 more
europepmc +6 more sources
Mapping the structural dynamics of water dissociation. [PDF]
Science, 2021 The formation of transient water photolysis products is followed with ultrafast electron ...
Cao J, Wang X, Zhong D.
europepmc +3 more sources
Dissociation of salts in water under pressure [PDF]
Nature Communications, 2020 AbstractThe investigation of salts in water at extreme conditions is crucial to understanding the properties of aqueous fluids in the Earth. We report first principles (FP) and classical molecular dynamics simulations of NaCl in the dilute limit, at temperatures and pressures relevant to the Earth’s upper mantle.
Cunzhi Zhang +5 more
openaire +5 more sources
Imaging Water Dissociation on TiO₂(110) [PDF]
, 2001 Scanning tunneling microscopy has been used to identify the adsorption site of H₂O on TiO₂(110)-(1 x 1) at 150 K, and to monitor the site of the dissociation products at 290 K.
Brookes, IM, Muryn, CA, Thornton, G
core +2 more sources
Insulin aspart dimer dissociation in water [PDF]
The Journal of Chemical Physics, 2022 The insulin hormone is stored in the hexameric form and dissociates to the dimeric form and finally to the active monomeric form. When insulin secretion is impaired, thereby affecting various metabolic processes, as a final response, insulin analogs are subcutaneously injected before meals to facilitate glucose metabolism.
Yagya Chaudhary, Prabhakar Bhimalapuram
openaire +2 more sources
Water does partially dissociate on the perfect TiO2(110) surface : a quantitative structure determination [PDF]
, 2012 There has been a long-standing controversy as to whether water can dissociate on perfect areas of a TiO2(110) surface; most early theoretical work indicated this dissociation was facile, while experiments indicated little or no dissociation.
Allegretti, Francesco +2 more
core +1 more source
In-situ X-ray spectroscopy of the electric double layer around TiO2 nanoparticles dispersed in aqueous solution: Implications for H2 generation [PDF]
, 2019 We report an experimental observation of a significant amount of hydroxide (OH–) created upon water dissociation and subsequently trapped around TiO2 nanoparticles dispersed in NH4OH aqueous solution. The hydroxide species is identified and quantified by
Ali, Hebatallah +4 more
core +1 more source
Dissociation of Ozonide in Water [PDF]
The Journal of Physical Chemistry A, 2000 The free energy of bond dissociation for ozonide ion radical is found to be lowered in aqueous solution by about 20 kcal/mol relative to that in the gas phase, based on electronic structure calculations. Explicit treatment of anion−water clusters indicates that the stronger hydrogen bonds to first-shell water molecules formed by O- relative to O3 ...
John Bentley +2 more
openaire +1 more source
Theoretical Study of Solvent Effects on the Platinum-Catalyzed Oxygen Reduction Reaction [PDF]
, 2010 We report here density functional theory (DFT) studies (PBE) of the reaction intermediates and barriers involved in the oxygen reduction reaction (ORR) on a platinum fuel cell catalyst.
Goddard, William A., III +4 more
core +1 more source
Dissociation chemistry of hydrogen halides in water [PDF]
The Journal of Chemical Physics, 2004 To understand the mechanism of aqueous acid dissociation, which plays a fundamental role in aqueous chemistry, the ionic dissociation of HX acids (X=F, Cl, Br, and I) in water clusters up to hexamer is examined using density functional theory and Møller–Plesset second-order perturbation methods (MP2).
Odde, S +4 more
openaire +3 more sources