Preparation of Pt and bamboo charcoal co-modified TiO2 for formaldehyde sensing at room temperature

Anatase TiO2 has evolved to be one of the most attractive materials for gas sensing due to its strong oxidation activity and excellent sensing properties. In this study, we prepared a Pt and bamboo charcoal co-modified nano-TiO2 using one-pot hydrothermal process and applied it for detection of formaldehyde. The successful incorporation of precious metal Pt and bamboo charcoal onto TiO2 was confirmed by SEM, TEM, EDS, XRD, and XPS. These modifiers significantly improved the response of TiO2 to formaldehyde, e.g., the response signal increased by 4 times, while the response time decreased from 91.05 to 67.76 s. The sample with 0.5@Pt and 0.5@C bamboo charcoal performed the best. Our work showed the potential of using biomass-derived carbon to improve the detection of formaldehyde., For electrical and sensing characterizations, a small amount of Pt and bamboo charcoal co-modified TiO2 obtained by grinding was mixed with distilled water and stirred into a sticky shape, then apply to the interdigitated electrode and place in an indoor environment to dry naturally. After drying, the electrode was placed in a tube furnace and sintered under N2 protection at 250 °C for 1 h. After that, the Pt/TiO2/C sensor electrode was obtained by waiting for the electrode to cool to room temperature. The prepared electrode was placed in formaldehyde gas environment for gas-sensitive performance test, and the sensing performance of the material was reflected by response strength A: A = (Ia - I0)/I0
Where I0 is the current of the material in the air environment, and Ia is the current of the material in the formaldehyde environment.
A controlled experimental study was conducted to investigate the impact of Pt and bamboo charcoal addition on the sensing performance of Pt/TiO2/C. Three typ..., , # Data from: Preparation of Pt and bamboo charcoal co-modified TiO2 for formaldehyde sensing at room temperature

[https://doi.org/10.5061/dryad.kwh70rz9w](https://doi.org/10.5061/dryad.kwh70rz9w)

## Key information for understanding and reuse of our data

Dataset as Excel file

The Excel file contains 9 data sheets.

I. First six sheets illustrate morphology characterization information of Pt/TiO2/C.

1\. surface EDS-point EDS mapping of Pt/TiO2/C.

2\. XRD patterns of TiO2/C and Pt/TiO2/C.

3-6. XPS spectra of TiO2/C and Pt/TiO2/C.

II. The seventh to ninth sheet shows the sensing performance of TiO2 andd Pt/TiO2/C series samples.

7\. The sensing performance of TiO2 series samples.

8\. The performance of Pt/TiO2/C.

9\. The current-time measurements and selectivity of Pt/TiO2/C.

DATA-SPECIFIC INFORMATION FOR: surface EDS-point EDS mapping of Pt/TiO2/C.

1\. Number of variables: 2

2\. Number of cases/rows: 4096

3\. Variable List:

\* Energy: （kV）the X-ray energy, and the magnitud...