Scholarlink

<p> A&#xa0;0D/1D/2D Au/PANI/MoS<sub>2</sub> hierarchical nanocomposite based on micro-electromechanical systems (MEMS) was successfully synthesized through in situ chemical oxidative polymerization. This composite overcomes the performance bottlenecks of single or dual-component combinations through a multi-dimensional synergy of “interface coordination—charge penetration—path optimization—stability enhancement.” The built-in electric field generated by the p-n heterojunction formed between PANI and MoS₂ can drive the directional migration of carriers, thereby optimizing the carrier transport process. The synergy between Au nanoparticles and MoS<sub>2</sub> regulates the growth and distribution of PANI, enabling it to grow vertically on the MoS<sub>2</sub> surface and shorten the response and recovery time. At room temperature, the response and recovery times for 1&#xa0;ppm ammonia are 69&#xa0;s and 89&#xa0;s, respectively, while those of pure PANI are 95&#xa0;s and 156&#xa0;s. Additionally, PANI resolves the problem of easy stacking between MoS<sub>2</sub> layers, increasing the proportion of active sites in the film from 12.82 to 45.87%. When the ammonia concentration is 1&#xa0;ppm, the sensor can achieve a response value of 92.5%, with a theoretical minimum detection limit of 0.45&#xa0;ppb. This research provides an innovative and efficient solution for ammonia detection at room temperature and shows significant potential in wearable electronic devices and human health monitoring.</p> Graphical Abstract <p></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

Ultra-sensitive room temperature ammonia detection enabled by MEMS-based 0D/1D/2D PA10Mo2 nanocomposites

  • 期刊论文

  • 发表日期：

    2025年8月6日

查看全文
  • Ping Luo,
  • Wenfeng Shen,
  • Jin Zhang,
  • Dawu Lv,
  • Ruiqin Tan,
  • Weijie Song

摘要

A 0D/1D/2D Au/PANI/MoS2 hierarchical nanocomposite based on micro-electromechanical systems (MEMS) was successfully synthesized through in situ chemical oxidative polymerization. This composite overcomes the performance bottlenecks of single or dual-component combinations through a multi-dimensional synergy of “interface coordination—charge penetration—path optimization—stability enhancement.” The built-in electric field generated by the p-n heterojunction formed between PANI and MoS₂ can drive the directional migration of carriers, thereby optimizing the carrier transport process. The synergy between Au nanoparticles and MoS2 regulates the growth and distribution of PANI, enabling it to grow vertically on the MoS2 surface and shorten the response and recovery time. At room temperature, the response and recovery times for 1 ppm ammonia are 69 s and 89 s, respectively, while those of pure PANI are 95 s and 156 s. Additionally, PANI resolves the problem of easy stacking between MoS2 layers, increasing the proportion of active sites in the film from 12.82 to 45.87%. When the ammonia concentration is 1 ppm, the sensor can achieve a response value of 92.5%, with a theoretical minimum detection limit of 0.45 ppb. This research provides an innovative and efficient solution for ammonia detection at room temperature and shows significant potential in wearable electronic devices and human health monitoring.

Graphical Abstract