Ke Zhang, Hang Wei, Yunsheng Li, Wenrui Zhang, PengDang Zhu, Ruiyu Zhang
School of Mechanical Engineering, Shanghai Institute of Technology, Shanghai 201418, Shanghai, People's Republic of China.
School of Cyber Science and Engineering, Wuhan University, Wuhan 430072, Wuhan, People's Republic of China.
Nanotechnology. 2023 Nov 9;35(4). doi: 10.1088/1361-6528/ad0603.
A simple hydrothermal method based on an orthogonal experimental design was used to synthesis Pt-loaded TiOmesoporous nanoparticles in one step. The successful synthesis of Pt-loaded TiOnanoparticles was demonstrated by various characterization methods. The effects of the modification of Pt and its explanation are described in detail by means of the test results. Through systematic gas-sensing tests, we found that the Pt-loaded TiOnanoparticles outperform pure TiOnanoparticles, with a high response value (= 42.5) to 200 ppm acetone at 260 °C and with a film thickness of 0.45 mm, far superior to that of pure TiO. The response time (8 s) and recovery time (11 s) of the material are also relatively good with excellent selectivity and long-term stability (30 days). The frequent use of acetone as an organic solution in factories and laboratories, as well as the possibility of making a preliminary diagnosis of diabetes by detecting acetone levels in exhaled gas, make this work promising for environmental monitoring and medical diagnosis.
采用基于正交实验设计的简单水热法一步合成负载铂的介孔二氧化钛纳米颗粒。通过多种表征方法证实了负载铂的二氧化钛纳米颗粒的成功合成。借助测试结果详细描述了铂修饰的效果及其解释。通过系统的气敏测试，我们发现负载铂的二氧化钛纳米颗粒性能优于纯二氧化钛纳米颗粒，在260℃下对200 ppm丙酮的响应值（= 42.5），膜厚为0.45 mm，远优于纯二氧化钛。该材料的响应时间（8 s）和恢复时间（11 s）也相对较好，具有优异的选择性和长期稳定性（30天）。丙酮在工厂和实验室中常作为有机溶液使用，并且通过检测呼出气体中的丙酮水平对糖尿病进行初步诊断具有可能性，这使得这项工作在环境监测和医学诊断方面具有前景。
