화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.78, 303-314, October, 2019
DOI10.1016/j.jiec.2019.05.040  Export Citation
A highly active Z-scheme NiGa2O4/anthraquinone/MoO3 photocatalyst via charge transfer for sunlight photocatalytic simultaneous conversions of nitrite and sulfite
Xue Ma1, Siyi Li2, Zhihui Qu1, Meng Zhang2, Jing Qiao2, Xin Cui1, Chunquan Wang1, Jun Wang1, 2, †, and Youtao Song1, †
  • 1College of Environment, Liaoning University, Shenyang, 110036, PR China
  • 2College of Chemistry, Liaoning University, Shenyang, 110036, PR China
E-mail:,
The separation efficiency of photogenerated electron-hole pairs (e- -h+) is an important factor for a highly photocatalytic activity of Z-scheme photocatalytic system. In order to suppress the recombining of photogenerated e- and h+ and enhance the electron transfer rate, anthraquinone (AQ) as special electron transfer channel is combined with NiGa2O4 and MoO3, forming a Z-scheme NiGa2O4/AQ/MoO3 photocatalyst. Due to unique chemical and physical properties, AQ provides a novel electron transmission way. Compared with traditional conductive channels (for example, noble metals and graphene), in this way, the AQ may greatly enhance the electron transfer efficiency. In addition, the related morphology, optical properties and chemical composition were investigated by a sequence of characterization methods. The influences of photocatalyst species, irradiation time and used times in simultaneously converting nitrite and sulfite under simulated sunlight were also studied. The results indicate that the prepared Z-scheme NiGa2O4/AQ/MoO3 photocatalyst exhibits a much high activity. The conversion rates of nitrite and sulfite can reach 89.81% and 94.47%, respectively, under simulated sunlight irradiation for four hours. The enhanced photocatalytic activity is attributed to the fact that AQ can rapidly transfer electron by inner charge transfer. This charge transfer way can provide a new idea to design subsequent photocatalysts.
Keywords:Z-scheme NiGa2O4/AQ/MoO3photocatalyst;Charge transfer;Simultaneous photocatalytic conversion;Nitrite;Sulfite
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