4.8 Article

Synthesis of lead-free Cs3Sb2Br9 perovskite alternative nanocrystals with enhanced photocatalytic CO2 reduction activity

Journal

NANOSCALE
Volume 12, Issue 5, Pages 2987-2991

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c9nr07722g

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Funding

  1. Wake Forest University
  2. National Nuclear Security Administration (NNSA) Office of Defense Nuclear Nonproliferation Research and Development (DNN R&D) through Lawrence Berkeley National Laboratory [LB15-V-GammaDetMater-PD2Jf, AC02-05CH11231]

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A synthetic method for uniform and pure Cs3Sb2Br9 NCs has been developed. Cs3Sb2Br9 NCs exhibit a 10-fold increase in activity for the photocatalytic CO2 reduction reaction compared to CsPbBr3 NCs, achieving 510 mu mol CO g(-1) cat. after 4 h. Density functional theory shows that Cs3Sb2Br9 surfaces sufficiently expose Sb to allow reactivity, as opposed to the unreactive CsPbBr3 surface.

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