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. 2015 Mar 12;10:127. doi: 10.1186/s11671-015-0835-1

Figure 7.

Figure 7

EDX spectrum of printed AuNPs at carbon electrode before and after annealing. Energy dispersive X-ray analysis of the AuNPs printed onto a carbon electrode shows carbon, gold, nitrogen and oxygen. The inset shows nitrogen and oxygen peaks before (red) and after (blue) annealing, indicating a reduction in nitrogen and oxygen peaks due to the annealing process.