期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 7, 期 4, 页码 4210-4219出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.8b05880
关键词
Photocatalytic; Localized surface plasmon resonance (LSPR); Near-infrared (NIR); Tungsten bronzes; Full solar spectrum
资金
- National Natural Science Foundation of China [51702105]
- Science and Technology Project of Guangdong Province [2016A040403042]
- China Postdoctoral Science Foundation [2017M620372, 2018T110864]
- Science and Technology Program of Guangzhou [201707010336]
To achieve efficient utilization of solar power for environmental remediation, search for suitable materials as efficient solar light driven photocatalysts is one of the most challenging missions. In this work, F-doped (NH4)(0.33)WO3 was first synthesized as a novel near-infrared (NIR) photocatalyst with enhanced photocatalytic activity. Compared to that of pure ammonium tungsten bronze, a blue shift of the NIR plasmon band and an enhanced NIR absorbance of F-doped (NH4)(0.33)WO3 could be observed. 83% of rhodamine B (RhB) was degraded by F-doped (NH4)(0.33)WO3 under NIR irradiation within 180 min. The NIR photodegradation rate of the optimal F-doped (NH4)(0.33)WO3 for RhB was 0.0102 min(-1), about 8.5 times as high as that of (NH4)(0.33)WO3. The enhanced NIR photocatalytic performance of F-doped (NH4)(0.33)WO3 can be attributed to the remarkable enhanced generation and separation of NIR localized surface plasmon resonance induced electron-hole pairs. Moreover, the F-doped (NH4)(0.33)WO3 nanorods could also degrade 36% of RhB and 93% of RhB when exposed to the UV light and visible light, respectively. This work develops a promising photocatalyst with a full solar light response for future cleanup of environmental pollutants.
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