Leangtanom Pimpan, Wisitsoraat Anurat, Jaruwongrangsee Kata, Chanlek Narong, Tuantranont Adisorn, Phanichphant Sukon, Kruefu Viruntachar
Applied Chemistry Program, Faculty of Science, Maejo University, Chiang Mai, 50290, Thailand.
National Security and Dual-Use Technology Center, National Science and Technology Development Agency, Klong Luang, Phathumthani, 12120, Thailand.
Nanoscale Res Lett. 2021 Apr 28;16(1):70. doi: 10.1186/s11671-021-03530-1.
In this work, CuO-loaded tetragonal SnO nanoparticles (CuO/SnO NPs) were synthesized using precipitation/impregnation methods with varying Cu contents of 0-25 wt% and characterized for HS detection. The material phase, morphology, chemical composition, and specific surface area of NPs were evaluated using X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and Brunauer-Emmett-Teller analysis. From gas-sensing data, the HS responses of SnO NPs were greatly enhanced by CuO loading particularly at the optimal Cu content of 20 wt%. The 20 wt% CuO/SnO sensor showed an excellent response of 1.36 × 10 toward 10 ppm HS and high HS selectivity against H, SO, CH, and CH at a low optimum working temperature of 200 °C. In addition, the sensor provided fast response and a low detection limit of less than 0.15 ppm. The CuO-SnO sensor could therefore be a potential candidate for HS detection in environmental applications.
在本工作中，采用沉淀/浸渍法合成了负载不同铜含量（0-25 wt%）的四方相氧化锡纳米颗粒负载氧化铜（CuO/SnO NPs），并对其进行了硫化氢（HS）检测表征。使用X射线衍射、透射电子显微镜、扫描电子显微镜、能量色散X射线光谱、X射线光电子能谱和布鲁诺尔-埃米特-泰勒分析对纳米颗粒的物相、形态、化学成分和比表面积进行了评估。从气敏数据来看，负载氧化铜极大地增强了氧化锡纳米颗粒对硫化氢的响应，尤其是在20 wt%的最佳铜含量时。20 wt%的CuO/SnO传感器对10 ppm硫化氢表现出1.36×10的优异响应，并且在200℃的低最佳工作温度下对氢气、二氧化硫、甲烷和乙烷具有高硫化氢选择性。此外，该传感器响应迅速，检测限低于0.15 ppm。因此，CuO-SnO传感器可能是环境应用中硫化氢检测的潜在候选者。
