Beilstein J. Nanotechnol.2017,8, 2264–2270, doi:10.3762/bjnano.8.226
, East China University of Science and Technology, Shanghai 200237, China 10.3762/bjnano.8.226 Abstract ZnOquantumdots and KNb3O8 nanosheets were synthesized by a two-step hydrothermal method for the photocatalytic reduction of CO2 to methanol where isopropanol is simultaneously oxidized to acetone
materials was evaluated by formation rate of methanol under UV light irradiation at ambient temperature and pressure. The methanol formation rate of pure KNb3O8 nanosheets was found to be 1257.21 μmol/g/h, and after deposition of 2 wt % ZnOquantumdots on the surface of KNb3O8 nanosheets, the methanol
production rate was found to increase to 1539.77 μmol/g/h. Thus, the ZnOquantumdots obviously prompted separation of charge carriers, which was explained by a proposed mechanism for this photocatalytic reaction.
Keywords: CO2 reduction; KNb3O8 nanosheets; methanol production; photocatalysis; ZnOquantum
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Figure 1:
X-ray diffraction patterns of samples prepared at different KOH concentrations: (a) 0.5 M; (b) 1.0 ...