电子元件与材料2025，Vol.44Issue(6)：626-633,8.DOI:10.14106/j.cnki.1001-2028.2025.0054
AuNPs负载CdSQDs/WS2材料的制备及其对NO2气敏性能研究
Synthesis and gas sensing properties of AuNPs modified CdSQDs/WS2 materials for NO2 detection
摘要
Abstract
Tungsten disulfide(WS2)nanoflower-like structures were synthesized by the solvothermal method,and different molar ratios of Au nanoparticles(AuNPs)and cadmium sulfide quantum dots(CdSQDs)were successfully modified on the surface to form WS2 nanostructured AuNPs@CdSQDs/WS2 sensitive materials.The morphology and elemental components of the as-synthesized nanocomposites were analyzed using scanning electron microscopy(SEM)and X-ray photoelectron spectroscopy(XPS)techniques.Under room temperature,a CGS-4TP gas sensing analyzer was introduced to investigate the gas sensing performances of WS2 and AuNPs@CdSQDs/WS2 sensors.The measured results demonstrated that the optimum Au2Cd3W sensor exhibited excellent gas sensing property,and the sensor response can reach to 4.25 toward 1×10-5 NO2,which is 11.18 times higher than that of the pure WS2 sensor.And the low limit of the detection is about 80.03 ppb.Meanwhile,the Au2Cd3W sensor also exhibits excellent selectivity,repeatability and long-term stability.Finally,the gas sensing mechanism of the AuNPs@CdSQDs/WS2 sensor was also discussed using the energy band theory.关键词
气体传感器/WS2纳米结构/CdS量子点/AuNPs/NO2检测Key words
gas sensor/WS2 nanostructures/CdS quantum dots/AuNPs/NO2 detection分类
信息技术与安全科学引用本文复制引用
熊长军,李梓豪,李兴鹏,胡杰,李廷鱼..AuNPs负载CdSQDs/WS2材料的制备及其对NO2气敏性能研究[J].电子元件与材料,2025,44(6):626-633,8.基金项目
中央引导地方科技发展基金(YDZJSX20231A011) （YDZJSX20231A011）
山西省回国留学基金(2023-052) （2023-052）
