Chem. J. Chinese Universities ›› 2020, Vol. 41 ›› Issue (11): 2464.doi: 10.7503/cjcu20200449
• Physical Chemistry • Previous Articles Next Articles
YU Jianxing1, YU Moxin1,2(), KUAI Le1, ZHU Bowen1
Received:
2020-07-14
Online:
2020-11-10
Published:
2020-11-06
Contact:
YU Moxin
E-mail:yumoxin2005@aliyun.com
Supported by:
CLC Number:
TrendMD:
YU Jianxing, YU Moxin, KUAI Le, ZHU Bowen. Preparation of High Oxygen Porous Carbon from Walnut Peel and Its Adsorption Properties for Ni2+[J]. Chem. J. Chinese Universities, 2020, 41(11): 2464.
Sample | Dav/nm | SBET/(m2·g-1) | Smic/(m2·g-1) | Vt/(cm3·g-1) | Vb/(cm3·g-1) | Vmic/(cm3·g-1) | Non?Vmic/Vt |
---|---|---|---|---|---|---|---|
HBC700 | 6.66 | 70.44 | 44.66 | 0.1173 | 0.0738 | 0.0323 | 0.562 |
HBC750 | 4.68 | 75.12 | 52.02 | 0.0878 | 0.0712 | 0.0347 | 0.513 |
HBC800 | 4.07 | 94.39 | 78.03 | 0.0906 | 0.0710 | 0.0446 | 0.372 |
Sample | Dav/nm | SBET/(m2·g-1) | Smic/(m2·g-1) | Vt/(cm3·g-1) | Vb/(cm3·g-1) | Vmic/(cm3·g-1) | Non?Vmic/Vt |
---|---|---|---|---|---|---|---|
HBC700 | 6.66 | 70.44 | 44.66 | 0.1173 | 0.0738 | 0.0323 | 0.562 |
HBC750 | 4.68 | 75.12 | 52.02 | 0.0878 | 0.0712 | 0.0347 | 0.513 |
HBC800 | 4.07 | 94.39 | 78.03 | 0.0906 | 0.0710 | 0.0446 | 0.372 |
Sample | Content(%) | ||||||
---|---|---|---|---|---|---|---|
C1s | O1s | N1s | Ni2p | —OH | C=O | C—O | |
HBC700 | 80.93 | 15.36 | 3.71 | — | 22.70 | 68.08 | 9.22 |
HBC750 | 77.83 | 19.33 | 2.84 | — | 23.65 | 60.85 | 15.05 |
HBC800 | 74.98 | 21.24 | 3.77 | — | 26.40 | 40.60 | 33.00 |
HBC800?Ni2+ | 57.92 | 30.10 | 2.75 | 9.23 | 23.95 | 38.92 | 37.13 |
Sample | Content(%) | ||||||
---|---|---|---|---|---|---|---|
C1s | O1s | N1s | Ni2p | —OH | C=O | C—O | |
HBC700 | 80.93 | 15.36 | 3.71 | — | 22.70 | 68.08 | 9.22 |
HBC750 | 77.83 | 19.33 | 2.84 | — | 23.65 | 60.85 | 15.05 |
HBC800 | 74.98 | 21.24 | 3.77 | — | 26.40 | 40.60 | 33.00 |
HBC800?Ni2+ | 57.92 | 30.10 | 2.75 | 9.23 | 23.95 | 38.92 | 37.13 |
Sample | Langmuir | Freundlich | ||||
---|---|---|---|---|---|---|
qm | KL/(L·mg-1) | R2 | 1/n | KF | R2 | |
HBC700 | 99.01 | 0.1235 | 0.9976 | 0.0728 | 63.48 | 0.9216 |
HBC750 | 111.23 | 0.0897 | 0.9956 | 0.0816 | 66.10 | 0.9347 |
HBC800 | 127.39 | 0.0865 | 0.9960 | 0.0948 | 70.06 | 0.9542 |
Sample | Langmuir | Freundlich | ||||
---|---|---|---|---|---|---|
qm | KL/(L·mg-1) | R2 | 1/n | KF | R2 | |
HBC700 | 99.01 | 0.1235 | 0.9976 | 0.0728 | 63.48 | 0.9216 |
HBC750 | 111.23 | 0.0897 | 0.9956 | 0.0816 | 66.10 | 0.9347 |
HBC800 | 127.39 | 0.0865 | 0.9960 | 0.0948 | 70.06 | 0.9542 |
Sample | Pseudo?first?order | Pseudo?second?order | ||||
---|---|---|---|---|---|---|
qe/(mg·g-1) | k1/min-1 | R2 | qe/(mg·g-1) | k2/(g·mg-1·min-1) | R2 | |
HBC700 | 31.74 | 0.0026 | 0.7068 | 86.06 | 0.0005 | 0.9990 |
HBC750 | 35.16 | 0.0025 | 0.7373 | 91.41 | 0.0004 | 0.9988 |
HBC800 | 38.13 | 0.0024 | 0.6887 | 99.30 | 0.0004 | 0.9985 |
Sample | Pseudo?first?order | Pseudo?second?order | ||||
---|---|---|---|---|---|---|
qe/(mg·g-1) | k1/min-1 | R2 | qe/(mg·g-1) | k2/(g·mg-1·min-1) | R2 | |
HBC700 | 31.74 | 0.0026 | 0.7068 | 86.06 | 0.0005 | 0.9990 |
HBC750 | 35.16 | 0.0025 | 0.7373 | 91.41 | 0.0004 | 0.9988 |
HBC800 | 38.13 | 0.0024 | 0.6887 | 99.30 | 0.0004 | 0.9985 |
Adsorbent | pH | Qe/(mg·g-1) | Ref. | Adsorbent | pH | Qe/(mg·g-1) | Ref. |
---|---|---|---|---|---|---|---|
SBA?15?NN | 5 | 32.67 | [ | RHAC(modified by HNO3) | 6 | 17.23 | [ |
SBA | 5 | 17.73 | [ | Coffee husk based activated carbon | 9 | 1.97 | [ |
MACCS | 6 | 108.70 | [ | HNO3 modify coffee husk based activated carbon | 9 | 21.14 | [ |
Commercial activated carbon | 6 | 35.39 | [ | PAC | 6 | 68.10 | [ |
Pristine N?CNTs | 6 | 25.80 | [ | Carbonaceous sorbent | 6 | 17.00 | [ |
Oxidized N?CNTs | 6 | 29.20 | [ | HBC800 | 6 | 127.39 | This study |
Adsorbent | pH | Qe/(mg·g-1) | Ref. | Adsorbent | pH | Qe/(mg·g-1) | Ref. |
---|---|---|---|---|---|---|---|
SBA?15?NN | 5 | 32.67 | [ | RHAC(modified by HNO3) | 6 | 17.23 | [ |
SBA | 5 | 17.73 | [ | Coffee husk based activated carbon | 9 | 1.97 | [ |
MACCS | 6 | 108.70 | [ | HNO3 modify coffee husk based activated carbon | 9 | 21.14 | [ |
Commercial activated carbon | 6 | 35.39 | [ | PAC | 6 | 68.10 | [ |
Pristine N?CNTs | 6 | 25.80 | [ | Carbonaceous sorbent | 6 | 17.00 | [ |
Oxidized N?CNTs | 6 | 29.20 | [ | HBC800 | 6 | 127.39 | This study |
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