Synergistic effect of Keggin-type [Xn+W11O39](12-n)- and TiO2 in macroporous hybrid materials [Xn+W11O39](12-n)--TiO2 for the photocatalytic degradation of textile dyes - Guo, Yihang.; Hu, Changwen.; Jiang, Chunjie.; Wang, Enbo.; Yang, Yu.