Nature Communications 8: Article number: 15938 (2017); Published: 24 July 2017; Updated: 27 September 2017.

The affiliation details for one of the corresponding authors, Ying Wang, are incorrect in this Article. This author is incorrectly affiliated with ‘University of Chinese Academy of Sciences, Beijing 100049, China.’ The correct affiliation details for this author are given below:

State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.