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Investigators from Beijing University of Technology Target Powder Technology (Effects of alkaline media on the controlled large mesopore size...

July 1, 2014



Investigators from Beijing University of Technology Target Powder Technology (Effects of alkaline media on the controlled large mesopore size distribution of bimodal porous silicas via sol-gel methods)

By a News Reporter-Staff News Editor at Journal of Technology -- Investigators publish new report on Powder Technology. According to news reporting originating from Beijing, People's Republic of China, by VerticalNews correspondents, research stated, "A series of bimodal mesoporous silicas (BMMs) have been synthesized under different aqueous alkaline conditions, including sodium hydroxide (NaOH), ethylenediamine (EDA) as well as dipotassium phosphate (DKP). Their morphologies and textural properties were fully characterized by X-ray diffraction (XRD), scanning and transmission electron microscope (SEM/TEM), N-2 adsorption/desorption isotherms, and Fourier transform infrared (FT-IR) spectroscopy."

Our news editors obtained a quote from the research from the Beijing University of Technology, "The results showed that a weak alkaline system was beneficial to obtain a low order degree of the mesopore structure with uniform spherical morphology, whereas a strong alkaline medium was favorable to achieve a high order degree of the mesopore structure with relatively larger but irregular nanoparticles. During the sol-gel process with combination of the template synthesis technique, the use of a strong base may accelerate the silicate condensation with irregular morphologies as a result. Also, it may accelerate the growth of the micellar (cetyltrimethyl ammonium bromide) phase with ordered arrangement. Therefore, the effects of different alkaline media on the mesopores and morphologies of these BMMs were remarkable."

According to the news editors, the research concluded: "To account for the observation, a possible mechanism was proposed."

For more information on this research see: Effects of alkaline media on the controlled large mesopore size distribution of bimodal porous silicas via sol-gel methods. Powder Technology, 2014;259():46-51. Powder Technology can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Powder Technology - www.elsevier.com/wps/product/cws_home/504094)

The news editors report that additional information may be obtained by contacting H. Zhou, Beijing University of Technology, Coll Environm & Energy Engn, Beijing 100124, People's Republic of China. Additional authors for this research include J.H. Sun, B. Ren, F. Wang, X. Wu and S.Y. Bai.

Keywords for this news article include: Asia, Beijing, Powder Technology, 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: Journal of Technology


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