Multilevel Heterostructure CNT-CuO-ZnO Film for Sensitive H2S Detection
Source abstract
Abstract
The severe hazards posed by H 2 S gas, including brain/respiratory damage, poisoning risks, and environmental pollution issues, have posed an urgent need for developing efficient, real-time flexible room-temperature gas sensors. Here, we loaded CuO-ZnO onto carbon nanotube (CNT) films through a solvothermal method to form a multilevel CNT-CuO-ZnO film, which retained the two-dimensional network of CNTs and the crystal structure of metal oxide particles. CuO and ZnO nanoparticles were wrapped around the surface of CNT bundles, in contact with each other, agglomerated into nanoclusters, and were connected in series on CNTs to form a rough surface coaxial bundle. The response to 300 ppb H 2 S was 50%, which was higher than that of the pure CNT film (4.7%), and after bending, the response to H 2 S remained almost unchanged (96.8%). The measured limit of detection of the CNT-CuO-ZnO film was 20 ppb (2%).
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Gas Sensing Nanomaterials and Sensors · ZnO doping and properties · Advanced Thermoelectric Materials and Devices
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Physics and Laboratory of Zhongyuan Light
Zhengzhou University
School of Materials Science and Engineering
Peking University
Funding
Zhengzhou University · National Natural Science Foundation of China
References (38)
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