The Au-NC/SCNPs were used as catalysts for the reduction at r.t. of nitrobenzene (0.2 mmol) to aniline in the presence of NaBH4 (0.8 mmol). The same procedure described in Section 2.3.3 was followed. Absorbance was recorded by taking 2 µL of crude at a given reaction time, which was then diluted in 4 mL of deionized water. After reaction, aniline was purified via preparative TLC (n-hexane/ethyl acetate 1:1), with a yield of 96%. 1H NMR (400 MHz, DMSO-d6, ppm): δ 3.65 (s, 2H), 6.67–6.70 (m, 2H), 6.73–6.77 (m, 1H), 7.13–7.17 (m, 2H).
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