Nitrogen Fixation Reaction Path in Gas-Liquid Two-Phase Dielectric Barrier Discharge Using Emission Spectra

Minchen Zhu; Fangquan Wang; Weidong Xia

doi:10.3788/LOP231305

Laser & Optoelectronics Progress, Volume. 61, Issue 9, 0930002(2024)

Nitrogen Fixation Reaction Path in Gas-Liquid Two-Phase Dielectric Barrier Discharge Using Emission Spectra

Minchen Zhu, Fangquan Wang, and Weidong Xia^*

Author Affiliations

School of Engineering Science, University of Science and Technology of China, Hefei 230027, Anhui, China

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Figures & Tables(8)

Fig. 1. DBD gas-liquid two-phase nitrogen fixation experimental system diagram

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Fig. 2. Schematic diagram of emission spectrum diagnosis

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Fig. 3. Relationship between gas-liquid ratio and ion mass concentration ( $N O_{3}^{-}$ , $N O_{2}^{-}$ , $N H_{4}^{+}$ )

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Fig. 4. Comparison of nitrogen fixation mass concentration and energy efficiency under different gas-liquid ratios

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Fig. 5. Emission spectra of DBD nitrogen fixing system. (a) Emission spectra when the gas-liquid ratio is 1∶1; (b) emission spectra when the gas-liquid ratio is 4∶1

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Fig. 6. Schematic diagram of important chemical processes and formation mechanism of nitrogen fixation under DBD-H₂O interaction

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Table 1. Experimental conditions of gas-liquid ratio nitrogen fixation
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Table 1. Experimental conditions of gas-liquid ratio nitrogen fixation
Parameter Value
Gas liquid ratio 1∶2‒5∶1
Total flow rate /（mL·min^-1） 6
Voltage of discharge /kV 20
Frequency of discharge /kHz 13
Volume of deionized water /mL 100
Time of discharge /h 0.5

Table 2. N₂ vibration temperature, rotation temperature, and total nitrogen mass concentration at different gas-liquid ratios

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Table 2. N₂ vibration temperature, rotation temperature, and total nitrogen mass concentration at different gas-liquid ratios

Gas liquid ratio	Vibration temperature /K	Rotational temperature /K	Total nitrogen concentration /（µg·mL^-1）
1∶1	2200	340	61.348
2∶1	2310	357	71.199
3∶1	2480	368	85.274
4∶1	2680	376	101.203
5∶1	2800	382	99.951

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Minchen Zhu, Fangquan Wang, Weidong Xia. Nitrogen Fixation Reaction Path in Gas-Liquid Two-Phase Dielectric Barrier Discharge Using Emission Spectra[J]. Laser & Optoelectronics Progress, 2024, 61(9): 0930002

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Paper Information

Category: Spectroscopy

Received: May. 15, 2023

Accepted: Jun. 8, 2023

Published Online: May. 6, 2024

The Author Email: Weidong Xia (xiawd@ustc.edu.cn)

DOI:10.3788/LOP231305

CSTR:32186.14.LOP231305

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Experimental conditions of gas-liquid ratio nitrogen fixation

Table 1. Experimental conditions of gas-liquid ratio nitrogen fixation

Table 2. N2 vibration temperature, rotation temperature, and total nitrogen mass concentration at different gas-liquid ratios

Table 2. N2 vibration temperature, rotation temperature, and total nitrogen mass concentration at different gas-liquid ratios

Table 2. N₂ vibration temperature, rotation temperature, and total nitrogen mass concentration at different gas-liquid ratios

Table 2. N₂ vibration temperature, rotation temperature, and total nitrogen mass concentration at different gas-liquid ratios