Synergistic photocatalysis of Cr(VI) reduction and 4-Chlorophenol degradation over hydroxylated α-Fe2O3 under visible light irradiation. - Wang, Ji-Chao; Ren, Juan; Yao, Hong-Chang; Zhang, Lin; Wang, Jian-She; Zang, Shuang-Quan; Han, Li-Feng; Li, Zhong-Jun (Journal of Hazardous Materials, 2016)