Seidler, J.J.SeidlerLandgraf, V.V.LandgrafVieira, L.L.VieiraOpdenbosch, D. VanD. VanOpdenboschWaldvogel, S.R.S.R.Waldvogel2022-03-062022-03-062021https://publica.fraunhofer.de/handle/publica/26799610.1016/j.matlet.2021.129553The reactivity and catalytic performance of cuprous oxide (Cu2O) particles rely on the size and morphology of the Cu2O crystals. In this study, a facile and mild hydrothermal route is applied to generate novel uniform cuprous oxide microcrystals, using non-toxic and low-cost carboxylic acids (O,O-type) and amino acids (N,O-type) as structure directing agents. N,O-type complexing agents showed a higher ability to reduce the copper species compared to the O,O-type ligands. Using oxalate and citrate complexes, pure Cu2O was obtained after 4 h at 200 °C, whereas the oxalate-based complex leads to the morphology of uniformly stepped microcubes, the citrate complex as precursor leads to flower-like octapods that evolved from microcubes.en660530610620journal article