Embedding Bi sandwich structure Bi2O3/Bi/TiO2 photocatalyst for enhancing the durable degradation of toluene - Liuhan Guo; Hehua Liao; Shitong Han; Dongmiao Li; Bing Wang; Jinni Shen; Wenxin Dai; Xuxu Wang; Zizhong Zhang; Hailing Xi (Journal of Environmental Sciences, 2026)