<trans-title xml:lang="en">Mesoporous Organic-inorganic Hybrid Siliceous Hollow Spheres: Synthesis and VOCs Adsorption</trans-title>

Hongning WANG; Li HUANG; Jiang QING; Tengzhou MA; Weiqiu HUANG; Ruoyu CHEN

doi:10.15541/jim20210638

Journal of Inorganic Materials, Volume. 37, Issue 9, 991(2022)

Mesoporous Organic-inorganic Hybrid Siliceous Hollow Spheres: Synthesis and VOCs Adsorption

Hongning WANG1... Li HUANG1, Jiang QING3, Tengzhou MA3,*, Weiqiu HUANG2 and Ruoyu CHEN1,* |Show fewer author(s)

Author Affiliations

¹1. Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Changzhou 213164, China

²2. Jiangsu Key Laboratory of Oil and Gas Storage and Transport Technology, Changzhou University, Changzhou 213016, China

³3. Technical Center for Industrial Product and Raw Material Inspection and Testing, Shanghai Customs, Shanghai 200135, China

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Figures & Tables(25)

1. TEM images of MOSs with different initial BTSE/ (BTSE+TEOS) molar ratios

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2. N₂ sorption isotherms (a) and pore size distributions (b) of MOSs with different initial BTSE/(BTSE+TEOS) molar ratios

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3. FT-IR spectra of MOSs with different initial BTSE/ (BTSE+TEOS) molar ratios

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4. XRD patterns of MOSs with different initial BTSE/ (BTSE+TEOS) molar ratios

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5. TGA curves of MOSs with different initial BTSE/ (BTSE+TEOS) molar ratios

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6. Histograms of static VOCs (n-hexane, toluene and 92# gasoline) adsorption capacities (a, c, e) and desorption efficiencies (b, d, f) of different samples

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6. Histograms of static VOCs (n-hexane, toluene and 92# gasoline) adsorption capacities (a, c, e) and desorption efficiencies (b, d, f) of different samples

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8. Breakthrough curves for n-hexane of SG (■), AC (●) and MOS-10% (▲) under dry condition for the (a) first time and (b) fifth time and comparison of the q_e (c) and desorption efficiency (d) of 5 times

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9. Toluene breakthrough curves on MOS-10% under dry condition

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10. Yoon and Nelson model fitting for 5 times adsorption of n-hexane (a) and toluene (b) on MOS-10% under dry condition

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11. n-hexane breakthrough curves on MOS-10% under 95% RH

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12. Simultaneous breakthrough adsorption n-hexane (a) and toluene (b) on MOS-10% under dry condition, comparison of the equilibrium adsorption capacities (c) and desorption efficiency (d) for 5 times, respectively

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S1. N₂ adsorption-desorption isotherms (a) and pore size distributions (b) of AC and SG

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S2. Relationship between VOCs adsorption capacities and structure parameters of different samples

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S3. N₂ adsorption-desorption isotherms (a) and pore size distributions (b) of MOS-10% and AC, respectively

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Table 1. Structural parameters of AC and SG
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Table 1. Structural parameters of AC and SG
Sample S_BET/(m²·g^-1) S_m/(m²·g^-1) V_t/(cm³·g^-1) V_m/(cm³·g^-1) Pore size/nm
AC 1451 973 1.03 0.48 5.6
SG 430 15 0.710 0.010 6.9

Table 1. Structural parameters of MOSs with different initial BTSE/(BTSE+TEOS) molar ratios

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Table 1. Structural parameters of MOSs with different initial BTSE/(BTSE+TEOS) molar ratios

Sample	S_BET/ (m²·g^-1)	V_t/ (cm³·g^-1)	Pore size/ nm
MOS-0	591	0.721	2.5
MOS-5%	612	0.722	2.7
MOS-7.5%	612	0.776	2.8
MOS-10%	696	0.887	2.6
MOS-12.5%	655	0.873	2.7
MOS-15%	648	0.857	2.7

Table 2. TGA results of different MOSs under nitrogen atmosphere in the range of 30-900 ℃ (10 ℃/min)

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Table 2. TGA results of different MOSs under nitrogen atmosphere in the range of 30-900 ℃ (10 ℃/min)

Sample	First event		Second event		Residual mass /%
Sample	(Tons-T_f )/℃	Δm/%	（Tons-T_f )/℃	Δm/%
MOS-0	30-200	1.7	200-900	8.1	90.2
MOS-5%	30-200	1.7	200-900	7.6	90.7
MOS-7.5%	30-200	1.9	200-900	12.6	85.5
MOS-10%	30-200	5.3	200-900	20.1	74.6
MOS-12.5%	30-200	1.5	200-900	7.9	90.6
MOS-15%	30-200	1.4	200-900	9.0	89.6

Table 3. Water vapor adsorption capacities, desorption efficiencies and the densities of surface hydroxyl groups of different samples

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Table 3. Water vapor adsorption capacities, desorption efficiencies and the densities of surface hydroxyl groups of different samples

Sample	Adsorption		Desorption		-OH/(×10²⁰, g^-1)
Sample	Average/(g·g^-1)	STDE^a/%	Average/%	STDE^a/%	-OH/(×10²⁰, g^-1)
MOS-0%	0.903	0.0168	99.4	0.205	3.11
MOS-5%	0.667	0.0177	99.3	0.329	2.35
MOS-7.5%	0.656	0.0165	99.4	0.283	2.31
MOS-10%	0.630	0.0137	99.4	0.134	2.23
MOS-12.5%	0.697	0.0156	99.4	0.230	2.44
MOS-15%	0.697	0.0136	99.4	0.365	2.45
SG	0.433	0.0984	97.7	0.867	1.72
AC	0.482	0.0305	93.5	11.1	1.77

Table 4. Comparison of dynamic n-hexane adsorption parameters on different samples for 5 times under dry condition

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Table 4. Comparison of dynamic n-hexane adsorption parameters on different samples for 5 times under dry condition

Sample	t_b/min	t_e/min	q_e/(g·g^-1)	Desorption efficiency/%
MOS-10%-1st	50	104	1.23	99.8
MOS-10%-2nd	48	102	1.20	99.5
MOS-10%-3rd	46	100	1.19	99.4
MOS-10%-4th	48	102	1.22	99.6
MOS-10%-5th	48	102	1.21	99.2
SG-1st	16	72	0.361	98.9
SG-2nd	14	70	0.321	97.5
SG-3rd	14	70	0.334	98.7
SG-4th	12	72	0.321	98.6
SG-5th	10	72	0.343	97.6
AC-1st	38	50	0.574	73.7
AC-2nd	28	44	0.465	83.6
AC-3rd	28	42	0.461	90.9
AC-4th	26	44	0.452	98.6
AC-5th	24	42	0.458	97.2

Table 5. Comparison of dynamic toluene adsorption parameters on MOS-10% for 5 times under dry condition
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Table 5. Comparison of dynamic toluene adsorption parameters on MOS-10% for 5 times under dry condition
t_b/min t_e/min q_e/(g·g^-1) Desorption efficiency/%
1st 48 100 1.21 99.7
2nd 46 98 1.18 99.5
3rd 44 96 1.17 99.3
4th 46 98 1.18 99.4
5th 46 98 1.18 99.1

Table 6. Structural parameters of MOS-10% and AC before and after 5 times dynamic n-hexane adsorption under dry condition
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Table 6. Structural parameters of MOS-10% and AC before and after 5 times dynamic n-hexane adsorption under dry condition
Sample S_BET/(m²·g^-1) S_m/(m²·g^-1) V_t/(cm³·g^-1) V_m/(cm³·g^-1) Pore size/nm
MOS-10% 696 0 0.887 0 2.64
MOS-10%-5th 638 0 0.830 0 2.64
AC 1654 652 1.06 0.48 5.58
AC-5th 1310 395 0.880 0.38 5.51

Table 7. Simulation parameters of 5 times dynamic n-hexane and toluene adsorption on MOS-10% under dry condition

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Table 7. Simulation parameters of 5 times dynamic n-hexane and toluene adsorption on MOS-10% under dry condition

	n-hexane			Toluene
	τ₀/min	K׳/min^-1	R²	τ₀/min	K׳/min^-1	R²
1st	63.1	0.150	0.984	58.4	0.0948	0.979
2nd	61.3	0.172	0.990	52.8	0.105	0.977
3rd	56.7	0.174	0.979	51.5	0.114	0.987
4th	57.1	0.169	0.986	54.1	0.111	0.978
5th	58.9	0.165	0.984	54.2	0.110	0.982

Table 8. Dynamic n-hexane adsorption parameters on MOS-10% for 5 times under 95% RH

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Table 8. Dynamic n-hexane adsorption parameters on MOS-10% for 5 times under 95% RH

	t_b/min	t_e/min	q_e,hexane /g·g^-1	q_e,t /g·g^{-1 adsorbent}	q_e,_water/g·g^{-1 adsorbent}	q_e,hexane/ q_e,_water	Desorption efficiency /%
1st	46	100	1.23	1.23	0.006	205	99.6
2nd	44	98	1.20	1.20	0.003	400	99.7
3rd	42	96	1.19	1.19	0.006	199	99.6
4th	42	96	1.21	1.21	0.003	404	99.4
5th	44	98	1.17	1.20	0.008	147	99.2

Table 9. Comparison of simultaneous adsorption n-hexane and toluene parameters on MOS-10% for 5 times under dry condition

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Table 9. Comparison of simultaneous adsorption n-hexane and toluene parameters on MOS-10% for 5 times under dry condition

	Dynamic adsorption capacity, q_e /(g·g^-1)
	Single component		Bi-component
	n-hexane	Toluene	n-hexane	Toluene	Total VOCs
1st	1.23	1.21	0.642	0.569	1.21
2nd	1.20	1.18	0.631	0.547	1.18
3rd	1.19	1.17	0.613	0.532	1.15
4th	1.22	1.18	0.607	0.550	1.16
5th	1.21	1.18	0.628	0.547	1.18

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Hongning WANG, Li HUANG, Jiang QING, Tengzhou MA, Weiqiu HUANG, Ruoyu CHEN. Mesoporous Organic-inorganic Hybrid Siliceous Hollow Spheres: Synthesis and VOCs Adsorption[J]. Journal of Inorganic Materials, 2022, 37(9): 991

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Paper Information

Category: RESEARCH ARTICLE

Received: Oct. 18, 2021

Accepted: --

Published Online: Jan. 12, 2023

The Author Email: MA Tengzhou (13564737997@163.com), CHEN Ruoyu (chry@cczu.edu.cn)

DOI:10.15541/jim20210638

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Structural parameters of AC and SG

Table 1. Structural parameters of AC and SG

Table 1. Structural parameters of MOSs with different initial BTSE/(BTSE+TEOS) molar ratios

Table 1. Structural parameters of MOSs with different initial BTSE/(BTSE+TEOS) molar ratios

Table 2. TGA results of different MOSs under nitrogen atmosphere in the range of 30-900 ℃ (10 ℃/min)

Table 2. TGA results of different MOSs under nitrogen atmosphere in the range of 30-900 ℃ (10 ℃/min)

Table 3. Water vapor adsorption capacities, desorption efficiencies and the densities of surface hydroxyl groups of different samples

Table 3. Water vapor adsorption capacities, desorption efficiencies and the densities of surface hydroxyl groups of different samples

Table 4. Comparison of dynamic n-hexane adsorption parameters on different samples for 5 times under dry condition

Table 4. Comparison of dynamic n-hexane adsorption parameters on different samples for 5 times under dry condition

Table 5. Comparison of dynamic toluene adsorption parameters on MOS-10% for 5 times under dry condition

Table 5. Comparison of dynamic toluene adsorption parameters on MOS-10% for 5 times under dry condition

Table 6. Structural parameters of MOS-10% and AC before and after 5 times dynamic n-hexane adsorption under dry condition

Table 6. Structural parameters of MOS-10% and AC before and after 5 times dynamic n-hexane adsorption under dry condition

Table 7. Simulation parameters of 5 times dynamic n-hexane and toluene adsorption on MOS-10% under dry condition

Table 7. Simulation parameters of 5 times dynamic n-hexane and toluene adsorption on MOS-10% under dry condition

Table 8. Dynamic n-hexane adsorption parameters on MOS-10% for 5 times under 95% RH

Table 8. Dynamic n-hexane adsorption parameters on MOS-10% for 5 times under 95% RH

Table 9. Comparison of simultaneous adsorption n-hexane and toluene parameters on MOS-10% for 5 times under dry condition

Table 9. Comparison of simultaneous adsorption n-hexane and toluene parameters on MOS-10% for 5 times under dry condition

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