“…Cerium oxide (CeO 2 ), a technologically important material, has earned intensive interest in the past decades for its commercial applications, such as catalysts, oxygen sensors, solid electrolytes, and absorbents [6][7][8][9]. As a consequence, much effort has been devoted to the fabrication of CeO 2 films [10] and various CeO 2 nanostructures including flowerlike [11], mesoporous [12], and dendrite-like ceria [13]. Recently, the 1D CeO 2 nanostructure has drawn much attention for its peculiar behaviors.…”