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. 2019 Oct 16;19(20):4478. doi: 10.3390/s19204478

Figure 24.

Figure 24

(a) TEM image of Pd nanoparticles (~9.5 nm) used to decorate Al-doped ZnO surfaces for H2 detection. Reprinted with permission from [58]. Copyright 2015 Journal of Applied Physics. (b) From SEM image of Pd nanocubes (~70 nm) used to decorate graphene sheets for H2 detection. Reprinted with permission from [67]. Copyright 2014 Sensors and Actuators B: Chemical. (c) TEM image of Au@Pd nanocubes (~48 nm) used for optical H2 detection. [10]. Copyright 2018 Sensors. (d) TEM image of Au@Pd nanorods investigated for optical H2 detection. Reprinted with permission from [132]. Copyright 2016 Chemistry of Materials.