Feckl, J. M., Dunn, H. K., Zehetmaier, P. M., Müller, A., Pendlebury, S. R., Zeller, P., et al. (2015). Ultrasmall Co3O4 Nanocrystals Strongly Enhance Solar Water Splitting on Mesoporous Hematite. Advanced Materials Interfaces, 2(18): 1500358. doi:10.1002/admi.201500358.