Funding for this research was provided by:
The fund of the State Key Laboratory of Advanced Technologyies for Comprehensive Utilization of Platinum Metals (SKL-SPM-2018011)
Fund of the Science and Technology Project of Yunnan Province-New Products (2016BA001)
Shaanxi province innovative talent promotion program - young science and technology nova project (2018KJXX-055)
The fund of the National Natural Science Foundation of China (51864022)
Received: 2 October 2018
Accepted: 18 February 2019
First Online: 26 February 2019
Change Date: 18 October 2019
Change Type: Correction
Change Details: In the article , the use of the formula (NH<sub>4</sub>)<sub>6</sub>W<sub>7</sub>O<sub>24</sub>·6H<sub>2</sub>O to represent the starting material ammonium paratungstate (APT) is outdated and incorrect.
: The authors declare that they have no competing interests.
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