S1 Supporting Information Single-Electron Activation of CO 2 on Graphene-Supported ZnO Nanoclusters: Effects of Doping in the Support Haiying He, * Stephen Sekoulopoulos, and Stan Zygmunt Department of Physics and Astronomy, Valparaiso University, Valparaiso, IN 46383 * To whom correspondence should be addressed. Electronic mail: haiying.he@valpo.edu Figure S1. Supercell models for the (ZnO) 12 cluster supported on a graphene with a supercell size of 55 and 88. Comparison of results is listed in Table S1. Symbols: C in yellow, Zn in navy blue, H in light blue, and O in red.