Nanoseed-assisted rapid formation of ultrathin ZnO nanorods for efficient room temperature NO2 detection |
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| Affiliation: | 1. College of Material Science and Engineering, Sichuan University, Chengdu, 610065 China;2. Department of Chemical Engineering, Tsinghua University, Beijing, 100084 China;3. Materials Research Institute, Materials Research laboratory, The Pennsylvania State University, University Park, PA, 16802 United States;4. Institute of Microelectronics, Tsinghua University, Beijing, 100084 China;1. Instrumental Analysis Center, Qilu University of Technology, Jinan, 250353, Shandong, PR China;2. School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, Shandong, PR China;1. School of Electronics and Information Engineering, Tianjin University, Tianjin 300072, PR China;2. Engineering Research Center of Seawater Utilization Technology, Ministry of Education, Hebei University of Technology, Tianjin 300130, PR China;1. Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China;2. Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China;3. College of Chemical Engineering, Sichuan University, Chengdu, 610065, China;1. Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;2. Department of Ecosystem Science and Management and Materials Research Institute, Materials Research Laboratory, The Pennsylvania State University, University Park, PA 16802, USA;3. Research Center for Analysis and Measurement, Kunming University of Science and Technology, Kunming 650093, China;4. Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu 215123, China |
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| Abstract: | The influence of ZnO nanoseeds on the formation of ZnO nanorods from ε-Zn(OH)2 in NaOH solution at 80 °C was investigated, using ZnO nanoparticles with a diameter of 4–10 nm as the seeds. The experimental results indicated that the presence of ZnO nanoseeds promoted the rapid heterogeneous formation of ultrathin ZnO nanorods. Compared with the ZnO submicron rods with a diameter of 0.5–1.0 µm, the ultrathin ZnO nanorods with a diameter of 10–15 nm were found to be more sensitive for detecting NO2 at room temperature owing to their higher variation of channel conduction to the diameter. |
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| Keywords: | ZnO Sensors Seed |
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