CuO-decorated bismuth subcarbonate p-n heterostructured micro-flowers for high-selectivity VOC gas sensor arrays and cooked rice quality assessmentOA
A gas sensor system with high sensitivity and excellent selectivity is essential for accurately evaluating the quality of cooked rice and optimizing agricultural storage conditions in real time.Detecting large molecular volatile organic compounds(VOCs)emitted from cooked rice presents several challenges,including low volatility,interference from complex sample matrices,and limited selectivity.In this study,we propose using CuO/Bi_(2)O_(2)CO_(3)(Cu-BC)p-n heterostructure micro-flowers as a substrate to create a four-channel gas sensor array that converts voltage to resistance.The individual Cux-BC sensors(x=10,20,30,and 40)exhibit a strong response to nonanal,benzaldehyde,and 1-octen-3-ol at room temperature(25±2℃),with detection specificity confirmed through principal component analysis(PCA).This integrated gas sensor array effectively identifies and distinguishes the quality of cooked rice,including both freshly prepared rice and rice stored for one to six weeks.The sensing mechanism relies on increased oxygen vacancies and improved electron mobility.Additionally,we explore the adsorption and diffusion mechanisms of the target gas molecules and oxygen on the surface of the materials using molecular dynamics(MD)simulations.Overall,the gas sensor array demonstrates significant potential in accurately assessing the quality of agricultural products at different storage stages.
Zichen Zheng;Kewei Liu;Yiwen Zhou;Kaichun Xu;Changlong Wang;Marc Debliquy;Carla Bittencourt;Chao Zhang
College of Mechanical Engineering,Yangzhou University,Yangzhou 225127,China Jiangsu Key Laboratory of Surface Strengthening and Functional Manufacturing,Yangzhou University,Yangzhou 225127,China Chimie des Interactions Plasma-Surface,Research Institute for Materials Science and Engineering,University of Mons,Mons 7000,BelgiumCollege of Mechanical Engineering,Yangzhou University,Yangzhou 225127,China Jiangsu Key Laboratory of Surface Strengthening and Functional Manufacturing,Yangzhou University,Yangzhou 225127,China Service de Science des Matériaux,Research Institute for Materials Science and Engineering,FacultéPolytechnique,University of Mons,Mons 7000,BelgiumCollege of Mechanical Engineering,Yangzhou University,Yangzhou 225127,China Jiangsu Key Laboratory of Surface Strengthening and Functional Manufacturing,Yangzhou University,Yangzhou 225127,ChinaCollege of Mechanical Engineering,Yangzhou University,Yangzhou 225127,China Jiangsu Key Laboratory of Surface Strengthening and Functional Manufacturing,Yangzhou University,Yangzhou 225127,China ICB UMR 6303,CNRS,Univ.Bourgogne Franche-Comté,UTBM,Belfort 90010,FranceCollege of Mechanical Engineering,Yangzhou University,Yangzhou 225127,ChinaService de Science des Matériaux,Research Institute for Materials Science and Engineering,FacultéPolytechnique,University of Mons,Mons 7000,BelgiumChimie des Interactions Plasma-Surface,Research Institute for Materials Science and Engineering,University of Mons,Mons 7000,BelgiumCollege of Mechanical Engineering,Yangzhou University,Yangzhou 225127,China Jiangsu Key Laboratory of Surface Strengthening and Functional Manufacturing,Yangzhou University,Yangzhou 225127,China
信息技术与安全科学
Bi_(2)O_(2)CO_(3)sensor arrayselectivityheterostructurecooked rice
《Journal of Advanced Ceramics》 2026 (2)
P.131-142,12
supported by the Outstanding Youth Foundation of Jiangsu Province of China(No.BK20211548)the Yangzhou Science and Technology Plan Project(No.YZ2023246)the Qinglan Project of Yangzhou University,and the China Scholarship Council(No.202308320445).
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