Chem. J. Chinese Universities ›› 2024, Vol. 45 ›› Issue (1): 20230410.doi: 10.7503/cjcu20230410
• Physical Chemistry • Previous Articles Next Articles
WANG Jiarui1, LI Chunli1,2(), CHENG Jiahao1, HAO Yaling1, ZHOU Nan1, YANG Peng1
Received:
2023-09-15
Online:
2024-01-10
Published:
2023-10-26
Contact:
LI Chunli
E-mail:lichunli16@163.com
Supported by:
CLC Number:
TrendMD:
WANG Jiarui, LI Chunli, CHENG Jiahao, HAO Yaling, ZHOU Nan, YANG Peng. Functional Regulation and Mechanism of Phosphoric Acid in GO Intercalation Stage[J]. Chem. J. Chinese Universities, 2024, 45(1): 20230410.
V(H2SO4)∶V(H3PO4) | 10∶0 | 9∶1 | 8∶2 | 5∶5 | 2∶8 |
---|---|---|---|---|---|
La./nm | 20.851 | 20.025 | 20.496 | 21.125 | 23.443 |
Table 1 La. parameters of GO prepared under different volume ratios of H2SO4/H3PO4
V(H2SO4)∶V(H3PO4) | 10∶0 | 9∶1 | 8∶2 | 5∶5 | 2∶8 |
---|---|---|---|---|---|
La./nm | 20.851 | 20.025 | 20.496 | 21.125 | 23.443 |
V(H2SO4)∶V(H3PO4) | 10∶0 | 9∶1 | 8∶2 | 5∶5 | 2∶8 |
---|---|---|---|---|---|
d/nm | 0.704 | 0.750 | 0.785 | 0.829 | 0.346 |
Table 2 Interlayer spacing(d) of samples prepared by H2SO4/H3PO4 with different volume ratios
V(H2SO4)∶V(H3PO4) | 10∶0 | 9∶1 | 8∶2 | 5∶5 | 2∶8 |
---|---|---|---|---|---|
d/nm | 0.704 | 0.750 | 0.785 | 0.829 | 0.346 |
V(H2SO4)∶V(H3PO4) | C/O | |||
---|---|---|---|---|
C | O | P | ||
10∶0 | 63.38 | 28.2 | — | 2.24 |
9∶1 | 66.18 | 32.01 | — | 2.07 |
8∶2 | 66.63 | 31.68 | 0.55 | 2.10 |
5∶5 | 60.15 | 26.66 | 0.88 | 2.26 |
2∶8 | 83.79 | 13.78 | 1.38 | 6.08 |
Table 3 Fitting results of the elemental composition of samples prepared by H2SO4 /H3PO4 with different volume ratios
V(H2SO4)∶V(H3PO4) | C/O | |||
---|---|---|---|---|
C | O | P | ||
10∶0 | 63.38 | 28.2 | — | 2.24 |
9∶1 | 66.18 | 32.01 | — | 2.07 |
8∶2 | 66.63 | 31.68 | 0.55 | 2.10 |
5∶5 | 60.15 | 26.66 | 0.88 | 2.26 |
2∶8 | 83.79 | 13.78 | 1.38 | 6.08 |
V(H2SO4)∶V(H3PO4) | 104ΔIp/A | 102ΔEp/V | Ipa/Ipc |
---|---|---|---|
10∶0 | 1.387 | 0.075 | 1.767 |
9∶1 | 2.847 | 0.083 | 1.714 |
8∶2 | 2.644 | 0.087 | 1.499 |
5∶5 | 3.243 | 0.091 | 1.581 |
2∶8 | 1.785 | 0.074 | 2.412 |
Table 4 Results of CV curves of samples prepared by H2SO4 /H3PO4 with different volume ratios
V(H2SO4)∶V(H3PO4) | 104ΔIp/A | 102ΔEp/V | Ipa/Ipc |
---|---|---|---|
10∶0 | 1.387 | 0.075 | 1.767 |
9∶1 | 2.847 | 0.083 | 1.714 |
8∶2 | 2.644 | 0.087 | 1.499 |
5∶5 | 3.243 | 0.091 | 1.581 |
2∶8 | 1.785 | 0.074 | 2.412 |
V(H2SO4)∶V(H3PO4) | Rs/(Ω·cm-2) | Rct/(Ω·cm-2) |
---|---|---|
10∶0 | 2.506 | 44.31 |
9∶1 | 2.556 | 32.13 |
8∶2 | 2.447 | 38.11 |
5∶5 | 2.523 | 34.31 |
2∶8 | 2.306 | 28.90 |
Table 5 Impedance fitting parameters of samples prepared by H2SO4 /H3PO4 with different volume ratios
V(H2SO4)∶V(H3PO4) | Rs/(Ω·cm-2) | Rct/(Ω·cm-2) |
---|---|---|
10∶0 | 2.506 | 44.31 |
9∶1 | 2.556 | 32.13 |
8∶2 | 2.447 | 38.11 |
5∶5 | 2.523 | 34.31 |
2∶8 | 2.306 | 28.90 |
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