Corrigendum: Copper induced hollow carbon nanospheres by arc discharge method: controlled synthesis and formation mechanism (2016 Nanotechnology 27 335602).

We regret to inform about an error in the above-mentioned paper, i.e., the raw Raman spectrum of copper-carbon DC arc discharge product prepared with 10% of CH4 in the gas mixture of CH4/He as shown in figure 5c. This raw spectrum and its deconvoluted components are replaced. The corresponding text about Raman results is re-described. These errors do not affect the discussion or interpretation of the results. We would like to apologize for any inconvenience caused.