News Column

Investigators from University of Hyderabad Report New Data on Hydrogen

May 26, 2014

By a News Reporter-Staff News Editor at Clinical Trials Week -- Current study results on Hydrogen have been published. According to news reporting originating in Andhra Pradesh, India, by NewsRx journalists, research stated, "Mesoporous In2O3 nanocubes were achieved in this present work following a transformation from hierarchical structures of mesoporous In(OH)(3) nanocubes synthesized hydrothermally. Appreciable control on the morphology of In(OH)(3) nanostructures was attained by optimizing the reactant concentration, ratio of structure directing agent in the reaction medium (water/PEG ratio), the reaction temperature, and time."

The news reporters obtained a quote from the research from the University of Hyderabad, "The synthesized samples were characterized extensively by XRD, TG-DTA, micro-Raman, and UV-DRS. Surface area and pore size distribution were determined from N-2 adsorption and desorption isotherms. Morphological evaluations carried out using electron microscopy in scanning (FE-SEM) and transmission (TEM) mode not only provided information on the size and shape of the materials but also revealed the hierarchical assembly consisting of primary and secondary structures. Controlled studies as a function of various reaction parameters and the morphological evolution observed are rationally correlated to propose a plausible formation mechanism. Further, hydrogen gas sensing properties (sensitivity, sensor response, and recovery time) of the as-prepared In2O3 nanostructures (nanocubes, nanobricks, nanoflakes, and nanoparticles) were investigated to demonstrate the influence of morphology. Owing to the porous structures and large surface area, In2O3 nanocubes exhibit superior sensitivity with short response/recovery times at concentrations as low as 100 ppb."

According to the news reporters, the research concluded: "Surface decoration with Pd nanoparticles activates these nanocubes, promoting excellent sensing response and selectivity toward hydrogen at room temperature."

For more information on this research see: Hierarchical In(OH)(3) as a Precursor to Mesoporous In2O3 Nanocubes: A Facile Synthesis Route, Mechanism of Self-Assembly, and Enhanced Sensing Response toward Hydrogen. Journal of Physical Chemistry C, 2014;118(13):6909-6921. Journal of Physical Chemistry C can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society -; Journal of Physical Chemistry C -

Our news correspondents report that additional information may be obtained by contacting A. Shanmugasundaram, University of Hyderabad, Sch Phys, Hyderabad 500134, Andhra Pradesh, India. Additional authors for this research include B. Ramireddy, P. Basak, S.V. Manorama and S. Srinath (see also Hydrogen).

Keywords for this news article include: Asia, India, Gases, Elements, Hydrogen, Nanoparticle, Andhra Pradesh, Nanostructural, Nanostructures, Nanotechnology, Inorganic Chemicals, Emerging Technologies, Clinical Trials and Studies

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Source: Clinical Trials Week

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