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A P25/(NH4)xWO3 hybrid photocatalyst with broad spectrum photocatalytic properties under UV, visible, and near-infrared irradiation.


ABSTRACT: In this study, a series of hybrid nanostructured photocatalysts P25/(NH4)xWO3 nanocomposites with the average crystallite size of P25 and (NH4)xWO3 of the sample was calculated to be about 30?nm and 130?nm, were successfully synthesized via a simple one-step hydrothermal method. The as-obtained samples was characterized by transmission electron microscopy (TEM), which implies that the P25/(NH4)xWO3 nanocomposites are fabricated with favourable nanosizd interfacial. The XPS results confirmed that the obtained sample consists of mixed chemical valences of W5+ and W6+, the low-valance W5+ sites could be the origin of NIR absorption. As revealed by optical absorption results, P25/(NH4)xWO3 nanocomposites possess high optical absorption in the whole solar spectrum of 200-2500?nm. Benefiting from this unique photo-absorption property and the synergistic effect of P25 and (NH4)xWO3, broad spectrum response photocatalytic activities covering UV, visible and near infrared regions on degradation of Rhodamine B have been realized by P25/(NH4)xWO3 nanocomposites. Meanwhile, the stability of photocatalysts was examined by the XRD and XPS of the photocatalysts after the reaction. The results show that P25/(NH4)xWO3 photocatalysts has a brilliant application prospect in the energy utilization to solve deteriorating environmental issues.

SUBMITTER: Yang L 

PROVIDER: S-EPMC5377943 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature

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A P25/(NH<sub>4</sub>)<sub>x</sub>WO<sub>3</sub> hybrid photocatalyst with broad spectrum photocatalytic properties under UV, visible, and near-infrared irradiation.

Yang Linfen L   Liu Bin B   Liu Tongyao T   Ma Xinlong X   Li Hao H   Yin Shu S   Sato Tsugio T   Wang Yuhua Y  

Scientific reports 20170403


In this study, a series of hybrid nanostructured photocatalysts P25/(NH<sub>4</sub>)<sub>x</sub>WO<sub>3</sub> nanocomposites with the average crystallite size of P25 and (NH<sub>4</sub>)<sub>x</sub>WO<sub>3</sub> of the sample was calculated to be about 30 nm and 130 nm, were successfully synthesized via a simple one-step hydrothermal method. The as-obtained samples was characterized by transmission electron microscopy (TEM), which implies that the P25/(NH<sub>4</sub>)<sub>x</sub>WO<sub>3</sub>  ...[more]

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