Scholarlink

<p>Hierarchical nanocomposites of reduced graphene oxide (rGO) and cuprous oxide nanoparticles were used as flexible gas sensors for detecting hydrogen sulfide (H<sub>2</sub>S). Nanocomposites were synthesized using solvothermal techniques and coated onto fabric threads to create conductive sensors. These sensors demonstrated high sensitivity to H<sub>2</sub>S, detecting concentrations between 10 and 2000&#xa0;ppm, with a notable exponential correlation between resistance changes and H<sub>2</sub>S concentrations. The average response and recovery times were approximately 15 and 130 seconds, respectively. Additionally, the sensors maintained linear responses to relative humidity between 10 and 90%, at temperatures ranging from 18 to 31&#xa0;°C. The results highlight the enhanced detection capabilities of graphene-based materials, offering a promising approach for low-cost, portable H<sub>2</sub>S sensors suitable for environmental monitoring and safety gas and oil facilities</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Flexible Gas Sensors Based on Hierarchical Graphene-Copper Oxide Nanocomposites for Environmental Monitoring in High-Risk Industries

  • 期刊论文

  • 发表日期：

    2025年6月18日

查看全文
  • Filipe Liberato Justino Diniz,
  • Thaíses Brunelle Santana de Lima,
  • Kairon Márcio de Oliveira,
  • Elmo Silvano de Araújo,
  • Patrícia Lopes Barros de Araújo

摘要

Hierarchical nanocomposites of reduced graphene oxide (rGO) and cuprous oxide nanoparticles were used as flexible gas sensors for detecting hydrogen sulfide (H2S). Nanocomposites were synthesized using solvothermal techniques and coated onto fabric threads to create conductive sensors. These sensors demonstrated high sensitivity to H2S, detecting concentrations between 10 and 2000 ppm, with a notable exponential correlation between resistance changes and H2S concentrations. The average response and recovery times were approximately 15 and 130 seconds, respectively. Additionally, the sensors maintained linear responses to relative humidity between 10 and 90%, at temperatures ranging from 18 to 31 °C. The results highlight the enhanced detection capabilities of graphene-based materials, offering a promising approach for low-cost, portable H2S sensors suitable for environmental monitoring and safety gas and oil facilities