Citation: Li Yang, Yang Liu, Ruiyang Zhang, Wei Li, Pu Li, Xin Wang, Ying Zhou. Enhanced visible-light photocatalytic performance of a monolithic tungsten oxide/graphene oxide aerogel for nitric oxide oxidation[J]. Chinese Journal of Catalysis, ;2018, 39(4): 646-653. doi: 10.1016/S1872-2067(17)62974-7 shu

Enhanced visible-light photocatalytic performance of a monolithic tungsten oxide/graphene oxide aerogel for nitric oxide oxidation

Li Yang ^a, ,
Yang Liu ^a ,
Ruiyang Zhang ^a ,
Wei Li ^b ,
Pu Li ^c ,
Xin Wang ^c ,
Ying Zhou ^a

a The Center of New Energy Materials and Technology, School of Materials Science and Engineering, Southwest Petroleum University, Chengdu 610500, Sichuan, China;
b Sichun Xuhang New Materials Co., Itd, Chengdu 610041, Sichuan, China;
c National Institute of Measurement and Testing Technology, Chengdu 610021, Sichuan, China

Received Date: 20 November 2017
Revised Date: 13 December 2017

Fund Project: This work was supported by the Innovative Research Team of Sichuan Province (2016TD0011), the Sichuan Youth Science and Technology Foundation (2014JQ0017) and the National Natural Science Foundation of China (21403172).

Photocatalysis is considered a promising technique for removal of pollutants from indoor air. However, the low selectivity and limited recyclability of photocatalysts in powder form currently limit their practical application. In this work, we reported the successful preparation of a monolithic tungsten oxide (WO₃)/graphene oxide (GO) aerogel photocatalyst through a cost-effective freeze-drying method. GO not only acts as a macroscopic support, but also increases the catalyst surface area from 46 to 57 m²/g, enhances the light absorption in the visible-light region, and raises the separation efficiency of photogenerated electron-hole pairs. The Obtained WO₃/GO aerogel exhibited an outstanding visible-light photocatalytic degradation rate of nitric oxide of 51%, which was 3.3 times that of pristine WO₃ powder. In addition, the aerogel displayed excellent selectivity, with a generation fraction of toxic nitrogen dioxide of as low as 0.5%. This work presents a facile synthesis route to fabricate a monolithic WO₃/GO aerogel photocatalyst with great promise for air purification.
- WO₃/GO aerogel,
- Photocatalysis,
- NO oxidation,
- Selectivity
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