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April 23, 2026

High-performance formaldehyde sensing of room-temperature UV-activated Mn-TiO2: Key effects of different crystal phase structures and Mn doping on carrier behavior and adsorption.

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Authors

YZYunhong ZhaoSGSiyuan GuoXFXiao Feng

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Overview

Examines crystalline structures and doping effects on formaldehyde sensing in TiO2, indicating improved sensor performance.

Key Points

  • To investigate how different crystal structures and manganese doping influence the gas sensing capabilities of TiO2 for formaldehyde detection.
  • Synthesis of TiO2 with anatase, rutile, and mixed crystals.
  • Mn-doped TiO2 created using the wet impregnation method.
  • Gas sensing performance evaluated post UV activation at room temperature.
  • Rutile-anatase mixed crystals exhibited a 21.12 response to 20 ppm formaldehyde.
  • 0.4 wt% manganese-doped TiO2 showed a 538.15 response to 20 ppm formaldehyde.
  • Detection limit achieved was as low as 8.4 ppb.

Cite This Study

Zhao et al. (2026) studied this question.

synapsesocial.com/papers/69e9b62685696592c86eada8https://doi.org/10.1016/j.envres.2026.124503
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