Figure 1From: Hydrothermal synthesis of amorphous MoS2nanofiber bundles via acidification of ammonium heptamolybdate tetrahydratePowder XRD pattern of MoS2 nanofiber bundles prepared at (a) 180 °C for 48 h using Na2S as sulfur source with 0.5 g citric acid. (b) 180 °C for 24 h using H2S as sulfur source. (c) 180 °C for 48 h using Na2S as sulfur source without citric acid. (d) 180 °C for 48 h using Na2S as sulfur source with 1 g citric acidBack to article page