Details

Autor(en) / Beteiligte

• He, Xiulan
• Wang, Shilong
• Jin, Tai

Titel

The microstructure and photocatalytic properties of nitrogen-doped nano titanium dioxide loaded on porous ceramics

Ist Teil von

• The Journal of physics and chemistry of solids, 2023-07, Vol.178, p.111359, Article 111359

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Nitrogen-doped nano TiO2 powder was prepared using the solvothermal method. The nano TiO2 powder was loaded on the porous ceramic carriers with a different aperture through the vacuum impregnation method using polyvinyl alcohol as a binder. The effects of deionized water content and carrier pore size on the microstructure and photocatalytic activity of nitrogen-doped nano TiO2 powder and supported TiO2 were investigated. The results show that, when introducing 25% deionized water, the nitrogen-doped nano TiO2 powder obtains a good crystallinity, small grain size, and high photocatalytic properties because of adequate hydrolysis of tetrabutyl titanate. The photocatalytic activity of nitrogen-doped nano TiO2 powder is improved by distorting the lattice and inhibiting grain growth. The nano TiO2 powder can be tightly loaded on the surface of the strut or hole-wall of porous ceramic carriers. The absorption and photocatalytic activity of supported TiO2 are demonstrably improved as the macropore provides the transmission channel, and the micropore realizes a good absorbing effect. The 20 PPI carrier with high porosity and suitable strength is beneficial to promote the photocatalytic property of supported TiO2. Moreover, the supported TiO2is easily recycled and reused. Nano N-doped TiO2 powder was loaded on the porous ceramic carriers using the polyvinyl alcohol as binder. Suitable deionized water content and porous ceramics aperture are conductive to fabricating supported TiO2 with high photocatalytic activity under visible light. With the micro-grade holes of porous ceramics carriers increasing, the capacity, absorption effect and photocatalytic activity can be obviously improved. The supported TiO2is easily recycled and reused. [Display omitted] •Nano N-doped TiO2 powder can be prepared with simple solvothermal method.•Nano N-doped TiO2 powder was successfully loaded on the porous ceramic carriers with PVC as the binder.•The absorption effect and photocatalytic activity of supported TiO2 can be improved.