Chem. J. Chinese Universities ›› 2018, Vol. 39 ›› Issue (1): 115.doi: 10.7503/cjcu20170281
• Physical Chemistry • Previous Articles Next Articles
LI Fu1, DONG Yongchun1,2,*(), CHENG Bowen1,2, KANG Weimin1,2
Received:
2017-05-03
Online:
2018-01-10
Published:
2017-12-19
Contact:
DONG Yongchun
E-mail:teamdong@sina.cn
CLC Number:
TrendMD:
LI Fu, DONG Yongchun, CHENG Bowen, KANG Weimin. Application of Hybrid Modified PAN Nanofibrous Membrane Fe Complexes with Adsorption-photocatalysis Bifunctions for Removal of Organic Dye from Water†[J]. Chem. J. Chinese Universities, 2018, 39(1): 115.
n(HH):n(HA) | n-PAN | PAN fiber | ||||||
---|---|---|---|---|---|---|---|---|
ΔW(%) | dm/nm | QFe / | ΔW(%) | dm/μm | QFe/ | |||
Modification | Coordination | (mmol·g-1) | Modification | Coordination | (mmol·g-1) | |||
1:0 | 2.45±0.26 | 252±19 | 279±21 | 1.20±0.22 | 2.12±0.32 | 19.37±0.21 | 19.39±0.18 | 0.94±0.15 |
3:1 | 45.62±1.15 | 295±22 | 355±19 | 5.97±0.18 | 32.25±1.13 | 22.58±0.19 | 23.96±0.20 | 4.64±0.21 |
1:1 | 56.71±1.35 | 303±25 | 347±24 | 6.69±0.19 | 44.42±1.47 | 26.69±0.22 | 27.73±0.16 | 5.31±0.18 |
1:3 | 57.81±1.25 | 312±21 | 348±20 | 7.22±0.20 | 42.29±1.33 | 27.71±0.21 | 28.06±0.17 | 6.15±0.17 |
0:1 | 63.89±1.05 | ND | ND | 8.08±0.14 | 64.52±1.51 | 53.63±0.14 | 53.61±0.14 | 7.74±0.12 |
Table 1 Variation of ΔW and dm values with different molar ratios of HH/HA for n-PAN and conventional PAN fiber after modification and coordination
n(HH):n(HA) | n-PAN | PAN fiber | ||||||
---|---|---|---|---|---|---|---|---|
ΔW(%) | dm/nm | QFe / | ΔW(%) | dm/μm | QFe/ | |||
Modification | Coordination | (mmol·g-1) | Modification | Coordination | (mmol·g-1) | |||
1:0 | 2.45±0.26 | 252±19 | 279±21 | 1.20±0.22 | 2.12±0.32 | 19.37±0.21 | 19.39±0.18 | 0.94±0.15 |
3:1 | 45.62±1.15 | 295±22 | 355±19 | 5.97±0.18 | 32.25±1.13 | 22.58±0.19 | 23.96±0.20 | 4.64±0.21 |
1:1 | 56.71±1.35 | 303±25 | 347±24 | 6.69±0.19 | 44.42±1.47 | 26.69±0.22 | 27.73±0.16 | 5.31±0.18 |
1:3 | 57.81±1.25 | 312±21 | 348±20 | 7.22±0.20 | 42.29±1.33 | 27.71±0.21 | 28.06±0.17 | 6.15±0.17 |
0:1 | 63.89±1.05 | ND | ND | 8.08±0.14 | 64.52±1.51 | 53.63±0.14 | 53.61±0.14 | 7.74±0.12 |
Fig.3 FTIR spectra of the modified n-PAN and their Fe complexes(A) a. n-PAN; b. HH-n-PAN; c. M-n-PAN2; d. HA-n-PAN; (B) a. HH-n-PAN; b. Fe-HH-n-PAN; c. M-n-PAN2; d. Fe-M-n-PAN.
Fig.4 Effect of the molar ratios of HH/HA on the adsorption ability of Fe complexes prepared with modified n-PAN(A) or conventional PAN fiber(B)(A) a. Fe-HH-n-PAN; b. Fe-M-n-PAN1; c. Fe-M-n-PAN2; d. Fe-M-n-PAN3; e. Fe-HA-n-PAN; f. n-PAN.(B) a. Fe-HH-PAN; b. Fe-M-PAN1; c. Fe-M-PAN2; d. Fe-M-PAN3; e. Fe-HA-PAN; f. PAN.
Complex | QFe/ (mmol·g-1) | Adsorption | Photocatalytic degradation | ||||
---|---|---|---|---|---|---|---|
De(%) | ka/(g·min-1·mg-1) | De(%) | kp/(g·min-1·mg-1) | ||||
Fe-HH-n-PAN | 1.20±0.11 | 8.98 | 9.63×10-3 | 0.9990 | 9.81 | ND | ND |
Fe-M-n-PAN1 | 1.21±0.08 | 28.72 | 3.56×10-3 | 0.9987 | 98.01 | 1.12×10-2 | 0.9990 |
Fe-M-n-PAN2 | 1.19±0.10 | 34.71 | 2.60×10-3 | 0.9984 | 98.32 | 1.43×10-2 | 0.9997 |
Fe-M-n-PAN3 | 1.20±0.05 | 35.45 | 2.31×10-3 | 0.9971 | 99.06 | 2.53×10-2 | 0.9997 |
Fe-HA-n-PAN | 1.20±0.07 | 0.82 | 2.93×10 | 0.9974 | 12.49 | 9.65×10-3 | 0.8938 |
Table 2 Adsorption and photocatalytic degradation kinetic model parameters for different modified n-PAN Fe complexes*
Complex | QFe/ (mmol·g-1) | Adsorption | Photocatalytic degradation | ||||
---|---|---|---|---|---|---|---|
De(%) | ka/(g·min-1·mg-1) | De(%) | kp/(g·min-1·mg-1) | ||||
Fe-HH-n-PAN | 1.20±0.11 | 8.98 | 9.63×10-3 | 0.9990 | 9.81 | ND | ND |
Fe-M-n-PAN1 | 1.21±0.08 | 28.72 | 3.56×10-3 | 0.9987 | 98.01 | 1.12×10-2 | 0.9990 |
Fe-M-n-PAN2 | 1.19±0.10 | 34.71 | 2.60×10-3 | 0.9984 | 98.32 | 1.43×10-2 | 0.9997 |
Fe-M-n-PAN3 | 1.20±0.05 | 35.45 | 2.31×10-3 | 0.9971 | 99.06 | 2.53×10-2 | 0.9997 |
Fe-HA-n-PAN | 1.20±0.07 | 0.82 | 2.93×10 | 0.9974 | 12.49 | 9.65×10-3 | 0.8938 |
Fig.7 Pseudo-second-order plots for the adsorption(A) and photocatalytic degradation(B) of RR 195 in the presence of different modified n-PAN Fe complexes
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