Flexible Room-Temperature Ammonia Sensor Using Multi-Heterojunction MoO3/CuO/Cu2O Nanoclusters for Noninvasive Kidney Disease Diagnosis

被引：1

作者：

Qian, Haoyu ^{[1
]}

Yan, Wenjing ^{[1
]}

Li, Yingzhu ^{[1
]}

Zhou, Xingquan ^{[1
]}

Xia, Shengjie ^{[1
]}

Qin, Yuyuan ^{[2
]}

Mao, Peng ^{[2
,3
]}

Xie, Bo ^{[1
]}

Han, Min ^{[2
]}

Hu, Jun ^{[1
]}

机构：

[1] Zhejiang Univ Technol, Coll Chem Engn, Hangzhou 310014, Peoples R China

[2] Nanjing Univ, Coll Engn & Appl Sci, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China

[3] Zhejiang Univ, State Key Lab Fluid Power & Mechatron Syst, Hangzhou 310027, Peoples R China

来源：

SMALL STRUCTURES | 2025年 / 6卷 / 06期

基金：

中国国家自然科学基金;

关键词：

ammonia; gas sensors; health monitorings; metal oxide semiconductors; multi-heterojunctions; PHASE SYNTHESIS; GAS SENSOR; OXIDE; H2S; SENSITIVITY; PLATFORM; BREATH;

D O I：

10.1002/sstr.202400549

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study, a flexible room-temperature ammonia (NH3) sensor is developed based on MoO3/CuO/Cu2O hybrid nanoclusters (HNCs), specifically designed for the noninvasive diagnosis of nephropathy. The MoO3/CuO/Cu2O HNCs achieve an ultralow detection limit of 0.73 ppm, with high sensitivity (0.163 ppm-1) and rapid response and recovery times (16.4 and 90.6 s). The integration of MoO3 (n-type) with CuO and Cu2O (p-type) forms multi-heterojunctions, enhancing gas-sensing performance through efficient charge separation and improved NH3 adsorption. Additionally, the sensor demonstrates excellent mechanical flexibility and long-term stability under dynamic deformation. To address humidity interference in exhaled breath analysis, the sensor with a hydrophobic polytetrafluoroethylene layer is coated via radio frequency sputtering, ensuring effective NH3 detection and differentiation between healthy individuals and kidney disease patients. In this work, the potential of multi-heterojunction nanostructures in developing high-performance, flexible gas sensors for practical health-monitoring applications is highlighted.

引用

页数：14

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