Abstract
W18O49 nanocrystals grown on halloysite nanotube surfaces could be facilely prepared through a hydrothermal process coupled with a calcination treatment. The as-prepared halloysite@W18O49 nanocomposite shows a smaller bandgap, stronger light absorption, and higher photocatalytic activity than W18O49 nanocrystals. Due to the narrow gap and chemical passivation aroused by inherently negative charges on the surface of halloysite nanotube, halloysite@W18O49 nanocomposite was endowed with superior performance to halloysite nanotube and W18O49 nanocrystals.
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