A simplified method to synthesize pure vanadium silicate analogue of ETS-10

High purity microporous vanadosilicate (EVS-10/AM-6) has been hydrothermally synthesised by a simple template-free, reducing agent-free method in the absence of titanosilicate ETS-10 seeds. Direct comparison between EVS-10 and ETS-10 showed successful isomorphous substitution of titanium with vanadium in the framework. The existence of vanadium is confirmed by energy dispersive X-ray spectroscopy and inductively coupled plasma mass spectrometry. The scan electron microscopy and the X-ray diffractometry show similar crystal morphology and similar molecular structure between the as-synthesised material and the ETS-10. Preliminary results indicate a similar internal surface area to ETS-10. Similar to ETS-10, EVS-10 may be useful for semiconductor and other electronic applications. This new simplified synthesis method may allow the economical production of EVS-10/AM-6 for quantum wire and other applications.

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► A method to obtain high purity vanadium analogue of ETS-10 (EVS-10) is reported.
► This method is simple, template- and reducing agent-free, does not use ETS-10 seeds.
► XRD and TEM of EVS-10 and ETS-10 show similar structures.