Preparation method of paper-based sensor for detecting ammonia gas, and use of paper-based sensor

US12366566B2 · kind B2 · utility

Assignee

• JIANGSU UNIVERSITY · CN

Inventors

• Xiaowei Huang · Hunan, CN
• Zhihua Li · Changsha, CN
• Xiaobo Zou · Beijing, CN
• Wei Sun · Changsha, CN
• Jiyong Shi · 安丰镇, CN
• Xinai ZHANG · 安丰镇, CN
• Ning Zhang · Saratoga, US
• Di Zhang · Xing'an, CN
• Xiaodong Zhai · Shanghai, CN
• Xuetao HU · 安丰镇, CN
• Tingting Shen · Lo Wu, CN

Key dates

• Filing date: May 30, 2023
• Grant date: Jul 22, 2025
• Expiry date: May 30, 2043

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2021/7786
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The present disclosure belongs to the technical fields of nanoscience and fluorescence sensing, and specifically relates to a preparation method of a paper-based sensor for detecting an ammonia gas, and a use of the paper-based sensor. In the present disclosure, Zn(PA)(BPE) is first prepared, and a porous structure on a surface of the Zn(PA)(BPE) is used to adsorb an ammonia gas to improve a reaction sensitivity of the ammonia gas; then a Zn(PA)@CNQD ratiometric fluorescent substance is prepared from Zn(PA)(BPE) and CNQD through embedding, and finally dissolved in ultrapure water (UPW) to obtain a solution; and the solution is added dropwise on a filter paper, and the filter paper is purged with nitrogen, such that the solution is loaded on the filter paper to obtain a ratiometric fluorescent paper-based sensor.