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| Bi9P2O18Cl: Phase Transition and Hydrogen Production by Photocatalytic Water-Splitting |
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| Abstract: Bi9P2O18Cl crystals were prepared by the high-temperature molten salt method. Single-crystal X-ray diffraction data analyses demonstrated that Bi9P2O18Cl can undergo a crystal-to-crystal phase transition from room temperature to low temperature. At room temperature, this compound (α-phase) crystallizes in monoclinic space group P21/m (11) with unit cell parameters a=1.149 10(7) nm, b=0.540 64(4) nm, c=1.463 69(9) nm, β=93.741(6)°, V=0.907 38(10) nm3. And at 100 K, it (β-phase) crystallizes in monoclinic space group P21/n (14) with unit cell parameters a=1.790 56(4) nm, b=0.538 870(10) nm, c=1.915 57(4) nm, β=103.693(2)°, V=1.795 76(6) nm3. Additionally, high pure powder samples of Bi9P2O18Cl were synthesized using solid-state reaction method, which exhibited promising performance in photocatalytic water splitting to produce H2, the H2 evolution rates reached 33.69 μmol·g-1·h-1. |
| Keywords: Aurivillius crystal structure phase transition photocatalytic hydrogen production |
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| CAO Zhen-Yu,WU Yun,GAO Jian-Hua.Bi9P2O18Cl: Phase Transition and Hydrogen Production by Photocatalytic Water-Splitting[J].Chinese Journal of Inorganic Chemistry,2022,38(5):969-976. |
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