“Synthetic Mechanism Discovery of Monophase Cuprous Oxide for Record High Photoelectrochemical Conversion of CO2 to Methanol in Water”, Ho-Young Kang,† Dae-Hyun Nam,† Ki Dong Yang,† Wonhyo Joo,† Hoyoung Kwak,† Hyung-Ho Kim,† Seong-Hyeon Hong,†,‡ Ki Tae Nam,*,†,‡ and Young-Chang Joo, ACS Nano, 2018, 12, 8187-8196