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June 20, 2026ACS Sensors

Self-Cleaning Pd–TiO 2 –WO 3 Heterostructure for High-Performance Hydrogen Gas Sensing

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Authors

DWDali WuYSYile ShiXLXiang Liu

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Overview

Randomized trial demonstrates improved hydrogen sensing performance in various concentrations, highlighting a practical strategy for gas detection.

Key Points

  • This research aims to develop a high-performance hydrogen gas sensor that combines self-cleaning capabilities with enhanced optical readability.
  • Constructed a self-cleaning Pd–TiO2–WO3 heterostructure via hydrothermal method with Pd deposition.
  • Conducted gasochromic tests to evaluate sensor performance at low and high hydrogen concentrations.
  • Performed RhB photodegradation and CO poisoning/recovery experiments to confirm photocatalytic capabilities.
  • The sensor exhibited a response time of 23.9 s and ΔE of 7.3 for 0.1% H2, improving to 11.5 s and ΔE of 15.8 at 4% H2.
  • Demonstrated efficient photocatalytic decontamination and improved resistance to catalyst poisoning.
  • Density functional theory calculations indicated enhanced hydrogen adsorption and charge transport in the heterostructure.

Cite This Study

Wu et al. (2026) studied this question.

synapsesocial.com/papers/6a362f3bdb0793dc1a536b26https://doi.org/10.1021/acssensors.6c01069
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