Negative oxygen ion (NOI) production by enhanced photocatalytic TiO2/GO composites anchored on wooden substrates
Author:
Han Xiaoshuai1, Wang Zhenxing1, Zhang Qinqin1, Lv Yan1, Pu Junwen2
Affiliation:
1. MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy , Beijing Forestry University , Beijing, 100083 , China 2. MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy , Beijing Forestry University , Beijing, 100083 , China , Phone: +86-10-62336163
Abstract
Abstract
Titanium dioxide (TiO2)/graphene oxide (GO)-treated wood was fabricated through a one-step hydrothermal-vacuum dipping technique, in which silica sol serves as a dispersant and linker owing to its good stability and high surface area, while the visible light activates TiO2/GO and negative oxygen ions (NOI) arise. This approach exhibits a super dye adsorption capacity and enhanced photocatalytic efficiency. In focus was the effect of the three-dimensional (3D) GO dopant on the NOI production, which was very high in this system. Namely, the concentration of NOI is up to 1710 ions cm−3 after 60 min visible light irradiation. Moreover, recycling experiments show that the properties of a TiO2/GO-wood system are stable. The TiO2/GO-treated wood is a healthy, environmentally friendly material which is promising for indoor decoration.
Publisher
Walter de Gruyter GmbH
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