Fig. 2: Continuous tuning of Cu coverage in 4H/fcc Au–Cu heteronanostructures. | Nature Communications

Fig. 2: Continuous tuning of Cu coverage in 4H/fcc Au–Cu heteronanostructures.

From: Unconventional phase metal heteronanostructures with tunable exposed interface for efficient tandem nitrate electroreduction to ammonia

Fig. 2: Continuous tuning of Cu coverage in 4H/fcc Au–Cu heteronanostructures.

a Schematic illustration for increasing the Cu coverage in 4H/fcc Au–Cu heteronanostructures by decreasing CTAC amount. TEM images (b, c) and HAADF-STEM image and the corresponding EDS elemental mapping (d) of 4H/fcc Au–Cu BBNs with low Cu domain density. TEM images (e, f) and HAADF-STEM image and the corresponding EDS elemental mapping (g) of 4H/fcc Au–Cu BBNs with moderate Cu domain density. TEM images (h, i) and HAADF-STEM image and the corresponding EDS elemental mapping (j) of 4H/fcc Au–Cu BBNs with high Cu domain density. TEM images (k, l) and HAADF-STEM image and the corresponding EDS elemental mapping (m) of 4H/fcc Au–Cu CSNs. The EDS elemental mappings in (d–m) share the same scale bars with their corresponding HAADF-STEM images in (d–m).

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