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Researchers from Harbin Normal University Detail New Studies and Findings in the Area of Nanostructures [Fabrication of hierarchical flower-like...

July 4, 2014



Researchers from Harbin Normal University Detail New Studies and Findings in the Area of Nanostructures [Fabrication of hierarchical flower-like porous ZnO nanostructures from layered ZnC2O4 center dot 3Zn(OH)(2) and gas sensing properties]

By a News Reporter-Staff News Editor at Science Letter -- New research on Nanostructures is the subject of a report. According to news reporting from Harbin, People's Republic of China, by NewsRx journalists, research stated, "ZnO materials with porous and hierarchical flower-like structure were synthesized through mild hydrothermal and simple calcination approach, in which the flower-like layered zinc oxalate hydroxide (ZnC2O4 center dot 3Zn(OH)(2)) precursor was first synthesized and then calcined at 600 degrees C. The obtained products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopic (TEM), Brunauer-Emmett-Teller (BET) and thermogravimetric (TG) analysis. We proposed the possible growth mechanism of the material via studying the time evolution experiment results."

The news correspondents obtained a quote from the research from Harbin Normal University, "In the process of reaction, oxalic acid as a structure-directing agent hydrolyzed and then formedprimarily sheets-like intermediate ZnC2O4 center dot 2H(2)O. Hexamethylenetetramine (HMT) as surfactant, with directional adsorption, leads to the formation of layered zinc oxalate hydroxide precursor. Furthermore, the gas sensitivity also can be characterized, whose results indicated that the synthesized materials had a preferable selectivity to ethanol gas."

According to the news reporters, the research concluded: "The fast response rate and reversible performance can be attributed to the produced greater specific surface area produced, which was caused by the porous and hierarchical flower-like structure."

For more information on this research see: Fabrication of hierarchical flower-like porous ZnO nanostructures from layered ZnC2O4 center dot 3Zn(OH)(2) and gas sensing properties. Applied Surface Science, 2014;308():17-23. Applied Surface Science can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Applied Surface Science - www.elsevier.com/wps/product/cws_home/505669)

Our news journalists report that additional information may be obtained by contacting J.S. Cui, Harbin Normal Univ, Sch Phys & Elect Engn, Minist Educ, Key Lab Photon & Elect Bandgap Mat, Harbin 150025, People's Republic of China. Additional authors for this research include J.B. Sun, X. Liu, J.W. Li, X.Z. Ma and T.T. Chen (see also Nanostructures).

Keywords for this news article include: Asia, Harbin, Nanostructural, Nanostructures, Nanotechnology, Emerging Technologies, People's Republic of China

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


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Source: Science Letter


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