Fluorinated TiO₂ Hollow Spheres for Detecting Formaldehyde under UV Irradiation.

ABSTRACT: The fluorinated titanium dioxide (F-TiO₂) hollow spheres with varying F to Ti molar ratios were prepared by a simple one-step hydrothermal method followed by thermal processing. The diameter of the F-TiO₂-0.3 hollow spheres with a nominal ratio of F:Ti = 0.3:1 was about 200-400 nm. Compared with the sensor based on pristine TiO₂ sensing materials, the F-TiO₂-0.3 sensor displayed an enhanced sensing performance toward gaseous formaldehyde (HCHO) vapor at room temperature under ultraviolet (UV) light irradiation. The F-TiO₂-0.3 sensor demonstrated an approximately 18-fold enhanced response (1.56) compared to the pristine TiO₂ sensor (0.085). The response and recovery times of the F-TiO₂-0.3 sensor to 10 ppm HCHO wer

SUBMITTER: Zhang J 

PROVIDER: S-EPMC10889930 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature