The SnO2/ZnO hierarchical heterostructures (HHSs) were synthesized via the microwave-assisted hydrothermal method, and the SnO2/ZnO HHSs based sensor exhibited ultra-low detection limit of 2 ppb for detecting NO2. Click to show full abstract
The SnO2/ZnO hierarchical heterostructures (HHSs) were synthesized via the microwave-assisted hydrothermal method, and the SnO2/ZnO HHSs based sensor exhibited ultra-low detection limit of 2 ppb for detecting NO2.
               
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