News Column

New Materials Science and Physical Chemistry Data Have Been Reported by Researchers at Stockholm University (Oriented Aggregation of Lepidocrocite...

September 12, 2014



New Materials Science and Physical Chemistry Data Have Been Reported by Researchers at Stockholm University (Oriented Aggregation of Lepidocrocite and Impact on Surface Charge Development)

By a News Reporter-Staff News Editor at Science Letter -- Investigators discuss new findings in Science. According to news reporting from Stockholm, Sweden, by NewsRx journalists, research stated, "The impact of lepidocrocite (gamma-FeOOH) nanoparticle aggregation on mineral surface charge development was resolved in aqueous solutions of NaCl and NaClO4. Synthetic rod-like particles exhibiting charged edge (100) and neutrally/low-charged (010) faces self-aggregated in salt-free solutions."

The news correspondents obtained a quote from the research from Stockholm University, "Aggregation was notably imaged by high-resolution transmission electron microscopy, and inferred by decreases in N-2(g)-B.E.T. specific surface area from 94 m(2)/g to 77 m(2)/g after 12 months, and to 66 m(2)/g after 33 months storage. Potential determining (H+, OH-) ions loadings in the 4-11 pH range were unchanged only if the particles remained aggregated in NaCI but only if they were disaggregated in NaClO4. These differences, alongside molecular simulations and experimental ion loadings resolved in other studies from our group, point to important controls on background electrolyte ion identity on the aggregation and charge development in lepidocrocite."

According to the news reporters, the research concluded: "These results may apply further to other mineral surfaces of comparable surface (hydr)oxo populations."

For more information on this research see: Oriented Aggregation of Lepidocrocite and Impact on Surface Charge Development. Langmuir, 2014;30(30):9017-9021. Langmuir can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Langmuir - www.pubs.acs.org/journal/langd5)

Our news journalists report that additional information may be obtained by contacting P.A. Kozin, Stockholm University, S-11418 Stockholm, Sweden. Additional authors for this research include G. Salazar-Alvarez and J.F. Boily (see also Science).

Keywords for this news article include: Stockholm, Sweden, Europe, Science

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


For more stories covering the world of technology, please see HispanicBusiness' Tech Channel



Source: Science Letter


Story Tools






HispanicBusiness.com Facebook Linkedin Twitter RSS Feed Email Alerts & Newsletters