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. 2017 Apr 26;9(5):155. doi: 10.3390/polym9050155

Figure 7.

Figure 7

(A) Synthesis process of the PCCNs: (a) Bare CNT (inset indicates HR-TEM image of CNT of 30 nm in diameter); (b) ultrathin CPPy layer-wrapped CNT (inset indicates HR-TEM image of CPPy-CNTs with the skin thickness of 5 nm in diameter); (c) PCCNs; (d) XRD pattern; (e) HR-TEM of Pd nanoparticles. (B) Sensing performance of H2 sensors based on the nanohybrids. Real-time responses of the nanohybrid sensors (a) upon cyclic exposure to H2 (1 to 100 ppm, Vds = −50 mV) and (b) on periodic exposure to 10 ppm H2 (ΔI/I0 = (I − I0)/I0, where I0 is the initial current, and I is the instantaneous current). Reprinted with permission from [61]. Copyright 2013, Royal Society of Chemistry.