AUTHOR=Li Haixia , Zhang Shuaibo , Zhang Anchao , Zhang Xinmin , Sun Zhijun , Yang Changze , Zhu Qifeng TITLE=RETRACTED: Effect of Bimetal Element Doping on the Low-Temperature Activity of Manganese-Based Catalysts for NH3-SCR JOURNAL=Frontiers in Chemistry VOLUME=10 YEAR=2022 URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2022.957051 DOI=10.3389/fchem.2022.957051 ISSN=2296-2646 ABSTRACT=Graphical Abstract