Hung Nguyen Phu, Van Duy Nguyen, Xuan Chu Thi, Thanh Le Dang Thi, Hung Chu Manh, Jin Han, Hoa Nguyen Duc
International Training Institute for Materials Science, Hanoi University of Science and Technology No 1 Dai Co Viet Hanoi Vietnam
School of Materials Science and Engineering, Hanoi University of Science and Technology No 1 Dai Co Viet Hanoi Vietnam.
RSC Adv. 2024 Apr 17;14(18):12438-12448. doi: 10.1039/d4ra01265h. eCollection 2024 Apr 16.
Acetone is a well-known volatile organic compound that is widely used in different industrial and domestic areas, but it can cause dangerous effects on human health. Thus, the fabrication of highly sensitive and selective sensors for recognition of acetone is incredibly important. Here, we prepared the SnO/Pd-NiO (SPN) nanowires-based gas sensor for the detection of acetone, in which, the amount of Pd nanoparticles were varied to enhance the performance of the devices. We demonstrated that the acetone gas sensing performance of the SPN device was significantly enhanced, showing increases of 3.72 and 6.53 folds compared to pristine SnO and NiO sensors, respectively. The Pd-NiO 0.01% wt Pd SPN sensor (SPN-1) exhibited an excellent response (/ = 14.88) toward 500 ppm acetone gas. The SPN-1 sensor also showed a fast gas response time of 11/150 seconds with 500 ppm Acetone at 450 °C, while the recovery time was 468/526 seconds. Additionally, the sensor showed good selectivity toward acetone over other reducing gases, such as NH, CH, and VOCs. With those results, the SPN-1 sensor shows superiority compared to sensors based on pure materials.
丙酮是一种众所周知的挥发性有机化合物，广泛应用于不同的工业和家庭领域，但它会对人体健康造成危害。因此，制备用于识别丙酮的高灵敏度和高选择性传感器极其重要。在此，我们制备了基于SnO/Pd-NiO（SPN）纳米线的丙酮检测气体传感器，其中通过改变钯纳米颗粒的含量来提高器件性能。我们证明，SPN器件的丙酮气敏性能显著增强，与原始的SnO和NiO传感器相比，分别提高了3.72倍和6.53倍。含0.01%重量比钯的Pd-NiO SPN传感器（SPN-1）对500 ppm丙酮气体表现出优异的响应（/ = 14.88）。在450℃下，SPN-1传感器对500 ppm丙酮的气敏响应时间为11/150秒，恢复时间为468/526秒。此外，该传感器对丙酮的选择性优于其他还原性气体，如NH、CH和挥发性有机化合物。基于这些结果，SPN-1传感器与基于纯材料的传感器相比具有优越性。
