Photocatalytic process optimization study of vanadium and nitrogen co-doped Ti-bearing blast furnace slag

Huo Hongying; Tong Yanwei

doi:10.7513/j.issn.1004-7638.2022.01.011

Volume 43 Issue 1

Mar. 2022

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Huo Hongying, Tong Yanwei. Photocatalytic process optimization study of vanadium and nitrogen co-doped Ti-bearing blast furnace slag[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(1): 74-79. doi: 10.7513/j.issn.1004-7638.2022.01.011

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Huo Hongying, Tong Yanwei. Photocatalytic process optimization study of vanadium and nitrogen co-doped Ti-bearing blast furnace slag[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(1): 74-79. doi: 10.7513/j.issn.1004-7638.2022.01.011

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Photocatalytic process optimization study of vanadium and nitrogen co-doped Ti-bearing blast furnace slag

doi: 10.7513/j.issn.1004-7638.2022.01.011

Huo Hongying^{1, 2
,},
Tong Yanwei¹

1.
College of Vanadium and Titanium, Panzhihua University, Panzhihua 617000, Sichuan, China
2.
Sichuan Provincial Research Center for Vanadium and Titanium Materials, Panzhihua University, Panzhihua 617000, Sichuan, China

Received Date: 2021-09-24
Available Online: 2022-04-24
Publish Date: 2022-02-28

Abstract

Abstract

The characteristics of the photocatalysts can be prepared using Ti-bearing blast furnace slag containing TiO₂ to realize Ti-bearing blast furnace slag′s high added value and reasonable comprehensive utilization. Photocatalytic material derived from vanadium and nitrogen co-doped Ti-bearing blast furnace slag was produced by two-step doping approach (high-temperature solid-phase sintering method was used to adulterate vanadium source and liquid-phase method was used to adulterate nitrogen source). The raw material was Ti-bearing blast furnace slag produced from Pangang. At the same time, ammonium nitrate and ammonium metavanadate were carried out as the nitrogen source and the vanadium source, respectively. The effects of calcination temperature, doping amount and calcination time on the degradation rate of simulated pollutant methylene blue solution were investigated under ultraviolet light, and SEM and XRD characterized the photocatalytic activity. The results show that the co-doping of vanadium and nitrogen has a negligible effect on the crystal structure of blast furnace slag but can increase the specific surface area of blast furnace slag and improve its photocatalytic activity. The N/Ti molar ratio is 30% and the mass percentage of ammonium metavanadate TiO₂ was 45% when the calcination temperature was 300 ℃. In addition, the degradation rate of the prepared vanadium and nitrogen co-doped Ti-bearing blast furnace slag photocatalyst reached 97.0% when the calcination time was 2 h, which was 47.0% higher than that before doping.
- Ti-bearing blast furnace slag,
- photocatalyst,
- ammonium metavanadate,
- ammonium nitrate,
- degradation rate

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References(17)

References

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