Composite of CH3NH3PbI3 with Reduced Graphene Oxide as a Highly Efficient and Stable Visible‐Light Photocatalyst for Hydrogen Evolution in Aqueous HI Solution

• DOI: 10.1002/adma.201704342
• Publication Date: 2018-01-10T07:19:55Z
• Authors: Yaqiang Wu; Peng Wang; Xianglin Zhu; Qianqian Zhang; Zeyan Wang; Yuanyuan Liu; Guizheng Zou; Ying Dai; Myung‐Hwan Whangbo; Baibiao Huang
• Keywords: Visible spectrum

A facile and efficient photoreduction method is employed to synthesize the composite of methylammonium lead iodide perovskite (MAPbI3 ) with reduced graphene oxide (rGO). This MAPbI3 /rGO shown be an outstanding visible-light photocatalyst for H2 evolution in aqueous HI solution saturated . Powder samples (100 mg) show a rate 93.9 µmol h-1 , which 67 times faster than that pristine under 120 mW cm-2 (λ ≥ 420 nm) illumination, highly stable showing no significant decrease catalytic activity after 200 h (i.e., 20 cycles) repeated experiments. The electrochemiluminescence performance investigated explore charge transfer process, find photogenerated electrons are transferred rGO sites, where protons