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In this paper, metal-organic framework (MOF) is explored as xylene sensing-material for resonant-cantilever gas sensor. Sensing experiment with the MOF nano-material of HKUST-1 demonstrates that 400 ppb xylene can be detected. This limit of detection (LOD) has been lower than the human olfactory threshold. The sensing mechanism is identified as the interaction between MOF and xylene. The specificity...
The paper reports a novel H2S sensing-effect for intrinsic ZnO nanowires (NWs) chemiresistive sensor. Herein 50nm diameter ZnO-NWs are found and verified to be sulfurized by H2S to form ZnS that can be latterly desulfurized back to ZnO by ambient oxygen, which is different from conventional ZnO sensing-mechanism where resistance of semiconductor ZnO is changed via electron depletion-layer variation...
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