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New Findings from Shandong University in the Area of Chemical Engineering Reported (A morpholinium surfactant crystallization induced formation of Au...

September 10, 2014



New Findings from Shandong University in the Area of Chemical Engineering Reported (A morpholinium surfactant crystallization induced formation of Au nanoparticle sheet-like assemblies with uniform SERS activity)

By a News Reporter-Staff News Editor at Journal of Engineering -- Investigators publish new report on Chemical Engineering. According to news reporting originating from Shandong, People's Republic of China, by VerticalNews correspondents, research stated, "Crystallization of the N-methyl-N-hexadecylmorpholinium bromide (C16MMB) surfactant in Au nanoparticles (Au NPs) sol could induce a large-scale production of uniform rectangular Au@C16MMB crystal sheets with uniform surface enhanced Raman scattering (SERS) activity. Scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopic measurements have been adopted to characterize the crystal sheet morphology and structure."

Our news editors obtained a quote from the research from Shandong University, "The island-like Au NPs aggregates were observed to distribute uniformly over the surface of C16MMB crystal, which provide sufficient SERS-active sites. Results from zeta potential measurement and molecular dynamic simulation indicated that the C16MMB molecules were electrostatically adsorbed on Au NPs to reverse the nanoparticle surface charge to be positive. The concentration and crystallization capability of C16MMB in solution play a key role to induce the formation of the self-organized Au@C16MMB crystal sheets. A surfactant crystallization induced assembling mechanism has been proposed. Raman tests of Au@C16MMB as an ideal SERS substrate exhibit the high enhancement factor and good uniformity."

According to the news editors, the research concluded: "It is believed that this approach could provide a unique way to fabricate uniform noble metal nanoparticle-based SERS substrates."

For more information on this research see: A morpholinium surfactant crystallization induced formation of Au nanoparticle sheet-like assemblies with uniform SERS activity. Colloids and Surfaces A-Physicochemical and Engineering Aspects, 2014;456():100-107. Colloids and Surfaces A-Physicochemical and Engineering Aspects can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands.

The news editors report that additional information may be obtained by contacting D.D. Huang, Shandong University, Key Lab Colloid & Interface Chem, Minist Educ, Jinan 250100, Shandong, People's Republic of China. Additional authors for this research include J.C. Cui and X. Chen.

Keywords for this news article include: Shandong, People's Republic of China, Asia, Chemical Engineering

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Source: Journal of Engineering


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