Citation: Haidong Li, Tinghan Chen, Yao Wang, Jianguo Tang, Yana Wang, Yuanhua Sang, Hong Liu. Surface-sulfurized Ag₂O nanoparticles with stable full-solar-spectrum photocatalytic activity[J]. Chinese Journal of Catalysis, ;2017, 38(6): 1063-1071. doi: 10.1016/S1872-2067(17)62806-7 shu

Surface-sulfurized Ag₂O nanoparticles with stable full-solar-spectrum photocatalytic activity

a. Institute of Hybrid Materials, Qingdao University, Qingdao 266071, Shandong, China;
b. Grade 1506, The High School Attached to Tsinghua University, Beijing 100084, China;
c. State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, Shandong, China

Received Date: 17 January 2017
Revised Date: 27 February 2017

Fund Project: This work was supported by the National Natural Science Foundation of China (51372142). the Innovation Research Group (51321091) and the Program of Introducing Talents of Discipline to Universities in China (111 program, b06015)

Ag₂O has attracted much recent attention, because of its high photocatalytic activity in the ultraviolet (UV)-visible region. However, there have been few reports on the near-infrared (NIR) photocatalytic activity of Ag₂O. This paper reports the high NIR photocatalytic activity of Ag₂O nanoparticles. Ag₂O is unsuitable for application in full-solar-spectrum photocatalysis, because it is unstable under UV irradiation. A surface sulfurization process was carried out to address this issue. Specifically, a layer of Ag₂S₂O₇ nanoparticles was grown on the surface of the Ag₂O nanoparticles, to improve the stability of the Ag₂O photocatalyst and enhance its photocatalytic activity in the UV, visible and NIR regions. The Ag₂O/Ag₂S₂O₇ heterostructure is a stable and efficient full-solar-spectrum photocatalyst. It has potential application in the photodegradation of organic pollutants, and more generally in environmental engineering where full utilization of the solar spectrum is required.
- Full-solar-spectrum,
- Silver oxide nanoparticles,
- Ag₂O/Ag₂S₂O₇,
- Heterostructure,
- Photocatalysis
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Surface-sulfurized Ag₂O nanoparticles with stable full-solar-spectrum photocatalytic activity