Research on the adsorption process of volatile organic compounds utilizing terahertz time-domain spectroscopy technique

Siyang LU; Jing ZHU; Zhicheng TAN; Yuting ZHANG; Jianglin CHEN; Wei WU

doi:10.3788/IRLA20240412

Infrared and Laser Engineering, Volume. 54, Issue 2, 20240412(2025)

Research on the adsorption process of volatile organic compounds utilizing terahertz time-domain spectroscopy technique

Siyang LU1...2, Jing ZHU1,2,3, Zhicheng TAN1,2, Yuting ZHANG1,2, Jianglin CHEN1,2, and Wei WU12 |Show fewer author(s)

¹Ministry of Education, Key Laboratory of Optoelectronic Test Technology and Instrumentation, School of Instrumentation Science and Opto-electroncs Engineering, Beijing Information Science and Technology University, Beijing 100192, China

²Fiber Optic Sensing and Systems Beijing Laboratory, School of Instrumentation Science and Opto-electroncs Engineering, Beijing Information Science and Technology University, Beijing 100016, China

³Beijing Key Laboratory of Optoelectronic Measurement Technology, School of Instrumentation Science and Opto-electroncs Engineering, Beijing Information Science and Technology University, Beijing 100192, China

show less

Abstract Get PDF(in Chinese)

Figures & Tables(10)

Fig. 1. Microscopic morphology of different adsorbent materials. (a) rGO, FG,GO, and GO-COOH; (b) ZIF-8 and ZIF-67; (c) MOF-177

Download full size

View in Article

Fig. 2. Optical path diagram of all-fiber terahertz time-domain spectrometer

Download full size

View in Article

Fig. 3. Step-by-step diagram of the experiment

Download full size

View in Article

Fig. 4. The reference signals when no adsorbent is dripped (Ref) and THz-TDS of ethanol with (a) rGO, FG, GO, and GO-COOH; (b) ZIF-8, ZIF-67, and MOF-177 at 26 ℃, 46 ℃, 66 ℃ and 76 ℃

Download full size

View in Article

Fig. 5. E_P of (a) rGO, (b) FG, (c) GO, (d) GO-COOH, (e) ZIF-8, (f) ZIF-67, and (g) MOF-177 plotted versus test time and test temperature

Download full size

View in Article

Fig. 6. Schematic diagram of the adsorption-desorption process (GO as an example)

Download full size

View in Article

Fig. 7. FTIR spectra. (a) rGO, FG, GO, and GO-COOH; (b) ZIF-8, ZIF-67, and MOF-177

Download full size

View in Article

Fig. 8. N₂ adsorption-desorption isotherms of (a) rGO, (b) FG, (c) GO, (d) GO-COOH, (e) ZIF-8, (f) ZIF-67, and (g) MOF-177

Download full size

View in Article

Table 1. Energy dispersive spectrometer point scan results of the adsorbent materials
View table
View in Article
Table 1. Energy dispersive spectrometer point scan results of the adsorbent materials
Materials C O F
rGO 89.12wt.% 10.88wt.% 0wt.%
FG 80.44wt.% 5.72wt.% 13.84wt.%
GO 59.76wt.% 40.24wt.% 0wt.%
GO-COOH 59.31wt.% 40.69wt.% 0wt.%

Table 2. specific surface area and pore size distributions of the materials

View table

View in Article

Table 2. specific surface area and pore size distributions of the materials

Materials	SSA^a/m²·g⁻¹	V_total^b/cm³·g⁻¹	D_ave^c/nm
注：a) 比表面积由BET 法计算得出；b) 在 P/P₀ = 0.99 时所获得的总孔体积；c) 材料的平均孔径
rGO	442	0.75	6.77
FG	297	0.40	5.39
GO	137	0.19	5.45
GO-COOH	407	0.71	6.97
ZIF-8	1353	0.65	1.92
ZIF-67	1401	0.62	1.90
MOF-177	32	0.05	6.43

Tools

Get Citation

Copy Citation Text

Siyang LU, Jing ZHU, Zhicheng TAN, Yuting ZHANG, Jianglin CHEN, Wei WU. Research on the adsorption process of volatile organic compounds utilizing terahertz time-domain spectroscopy technique[J]. Infrared and Laser Engineering, 2025, 54(2): 20240412

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites