Silver-loaded sodium titanate photocatalysts for selective reduction of carbon dioxide to carbon monoxide with water
作者： Xing Zhu , Akihiko Anzai , Akira Yamamoto , Hisao Yoshida
DOI: 10.1016/J.APCATB.2018.10.021
关键词:
摘要: Abstract To obtain more efficient photocatalyst for photocatalytic reduction of CO2 with H2O and figure out the reason nonstoichiometric O2 evolution, silver-loaded sodium titanate photocatalysts were further studied in improved reaction conditions. After preliminary tests two kinds samples different ratio to titanium (Na2Ti6O13 Na2Ti3O7), several hexatitanate (Na2Ti6O13) prepared flux method by changing various parameters such as flux, loading amount Ag cocatalyst, cocatalyst. As a result, Ag/Na2Ti6O13 sample chloride 1.0 wt% cocatalyst loaded photodeposition method, exhibited highest production rate (4.6 μmol h−1) selectivity (74%) carbon monoxide among examined samples, which are than 29 times higher 2.7 those our previous report. Furthermore, although required oxygen equivalent formation rates reduced products was not observed study, it found that developed Ag/Na2Ti6O13(NaCl) produced enough after long induction period 50 h present condition. The reasons insufficient initial also investigated clarified, i.e., residues photoadsorption on surface responsible evolution at period.
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