Liu, C.; Qian, J.; Gu, C.; Chen, Z.; Chen, F.; Xu, Z.; Li, P.; He, F.; Wu, Z. Preparation of Carbon-Coated TiO2 Immobilized on Expanded Graphite Activated Carbon Composite and Its Application for Photodegradation of Formaldehyde Gas. ajc 2014, 26, 1383-1386.