Liming Sun,‡a Yusheng Yuan,‡a Rong Li,‡a Wenwen Zhan,a Xiao-Jun Wang,a Yanli Zhao*b and Xiguang Han,*a Significantly enhanced photocatalytic performance of In2O3 hollow spheres via the coating effect of an N,S-codoped carbon layer, J. Mater. Chem. A, 2019,7, 25423-25432.