Study on the Photocatalytic Degradation Rate of Indoor Formaldehyde with Nano-TiO2Coating

Yue，Yihang1,2; Feng，Bo1,2,3; Du，Chun1,2; Wang，Yuanhao4; Wang，Shifeng1,2,3

10.1088/1755-1315/791/1/012060

2021-06-29

1755-1307

1755-1315

IOP Conference Series: Earth and Environmental Science

791

1

With the improvement of people's living standard, diverse home decoration has become popular. However, it results in indoor hazardous gas emission, especially formaldehyde, bringing harm to people's health. To address this issue, one positive strategy is to remove the hazardous volatile organic compounds through environment friendly nanomaterials. Nano-TiO2 is such a kind of semiconductor material, which can decompose the volatile pollutants via photocatalytic process. In this work, the removal of indoor volatile pollutants by applying home-made nano-TiO2 was studied. The dependence of treatment efficiency of indoor formaldehyde on varying flow rate, coating times, humidity and temperature was systematically investigated. As a result, the highest purification efficiency was achieved when it was coated three times at the relative humidity of 50%. The faster the flow rate, the higher the air purification efficiency. Temperature is also an important factor affecting degradation efficiency, and the degradation has peaked at 22 °C. This study demonstrates the effective removal of indoor volatile organic compounds via green nano-TiO2 coating at low cost, and paves way for nanomaterials in applications of indoor environment improvement.

其他

英语

2-s2.0-85109902385

Scopus

1.Department of Physics,Innovation Center of Materials for Energy and Environment Technologies,College of Science,Tibet University,Lhasa,850000,China
2.Institute of Oxygen Supply,Center of Tibetan Studies,Everest Research Institute,Tibet University,Lhasa,850000,China
3.Key Laboratory of Cosmic Rays,Tibet University,Ministry of Education,Lhasa,850000,China
4.School of Environment Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Yue，Yihang,Feng，Bo,Du，Chun,et al. Study on the Photocatalytic Degradation Rate of Indoor Formaldehyde with Nano-TiO2Coating[C],2021.