* Corresponding authors

^a Division of Chemistry and Chemical Engineering, 210 Noyes Laboratory, 127-72, California Institute of Technology, Pasadena, CA, USA
E-mail: nslewis@caltech.edu

^b Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA, USA

^c Dow Centre for Sustainable Engineering Innovation, University of Queensland, Australia

^d Department of Chemical Engineering, University of California, Santa Barbara, CA, USA
E-mail: mcfar@ucsb.edu