Chem. J. Chinese Universities ›› 2026, Vol. 47 ›› Issue (3): 20250279.doi: 10.7503/cjcu20250279
• Physical Chemistry • Previous Articles Next Articles
LIU Haoyang1, PAN Bo2, LIU Zhigang3, ZHANG Zhihui1(
), GAO Wenxiu1, YANG Yanru1, YANG Miaomiao1
Received:2025-09-28
Online:2026-03-10
Published:2025-11-21
Contact:
ZHANG Zhihui
E-mail:zhangzh@jlict.edu.cn
Supported by:CLC Number:
TrendMD:
LIU Haoyang, PAN Bo, LIU Zhigang, ZHANG Zhihui, GAO Wenxiu, YANG Yanru, YANG Miaomiao. PEG-assisted Synthesis of Highly Dispersed Ag NPs/USY Catalysts and Their Efficient Catalytic Reduction of 4-Nitrophenol[J]. Chem. J. Chinese Universities, 2026, 47(3): 20250279.
| System | Micropore area/ (m²·g-1) | Micropore volume/ (cm³·g-1) | Average pore diameter/nm | Total pore volume/(cm³·g-1) | Specific surface area/ (m2·g-1) |
|---|---|---|---|---|---|
| USY | 675.88 | 0.2679 | 1.8688 | 0.3152 | 674.60 |
| 2%Ag NPs/USY | 373.27 | 0.1477 | 2.1504 | 0.2018 | 375.31 |
| 5%Ag NPs/USY | 320.85 | 0.1262 | 2.3102 | 0.1773 | 306.97 |
| 10%Ag NPs/USY | 240.26 | 0.0929 | 2.4644 | 0.1480 | 246.30 |
| HY | 780.30 | 0.3082 | 1.7952 | 0.3447 | 768.06 |
| 5%Ag NPs/HY | 315.06 | 0.1537 | 2.5574 | 0.2208 | 411.01 |
Table 1 Pore area, pore volume and pore diameter of USY, Ag NPs/USY, HY and Ag NPs/HY
| System | Micropore area/ (m²·g-1) | Micropore volume/ (cm³·g-1) | Average pore diameter/nm | Total pore volume/(cm³·g-1) | Specific surface area/ (m2·g-1) |
|---|---|---|---|---|---|
| USY | 675.88 | 0.2679 | 1.8688 | 0.3152 | 674.60 |
| 2%Ag NPs/USY | 373.27 | 0.1477 | 2.1504 | 0.2018 | 375.31 |
| 5%Ag NPs/USY | 320.85 | 0.1262 | 2.3102 | 0.1773 | 306.97 |
| 10%Ag NPs/USY | 240.26 | 0.0929 | 2.4644 | 0.1480 | 246.30 |
| HY | 780.30 | 0.3082 | 1.7952 | 0.3447 | 768.06 |
| 5%Ag NPs/HY | 315.06 | 0.1537 | 2.5574 | 0.2208 | 411.01 |
| Entry | Catalyst | kapp/min-1 | Concentration of 4⁃NP solution/(mg·L-1) | Silver concentration(%) | Cycle(act. a >50%) | Ref. |
|---|---|---|---|---|---|---|
| 1 | rGO/Ag | 0.49 | 41.7 | 18 | 8 | [ |
| 2 | rGO/Fe3O4/Ag | 0.37 | 13.9 | 23.1 | 3 | [ |
| 3 | Ag dendrites | 0.34 | 14.3 | ca. 100 | N/A b | [ |
| 4 | Ag/MR⁃Photo | 0.126 | 17.4 | 1 | 4 | [ |
| 5 | PG/Ag | 0.33 | 16.7 | 55.3 | N/A b | [ |
| 7 | Fe3O4/SiO2@Ag | 0.24 | 0.0278 | 1.44 | 4 | [ |
| 8 | Ag NPs⁃loaded⁃zeolite | 0.18 | 9.2 | 4 | N/A b | [ |
| 9 | Ag NPs/USY | 0.817 | 500 | 5 | 8 | This work |
Table 2 Comparison of rate constants, silver mass concentrations, and cycle numbers for different silver-based catalysts
| Entry | Catalyst | kapp/min-1 | Concentration of 4⁃NP solution/(mg·L-1) | Silver concentration(%) | Cycle(act. a >50%) | Ref. |
|---|---|---|---|---|---|---|
| 1 | rGO/Ag | 0.49 | 41.7 | 18 | 8 | [ |
| 2 | rGO/Fe3O4/Ag | 0.37 | 13.9 | 23.1 | 3 | [ |
| 3 | Ag dendrites | 0.34 | 14.3 | ca. 100 | N/A b | [ |
| 4 | Ag/MR⁃Photo | 0.126 | 17.4 | 1 | 4 | [ |
| 5 | PG/Ag | 0.33 | 16.7 | 55.3 | N/A b | [ |
| 7 | Fe3O4/SiO2@Ag | 0.24 | 0.0278 | 1.44 | 4 | [ |
| 8 | Ag NPs⁃loaded⁃zeolite | 0.18 | 9.2 | 4 | N/A b | [ |
| 9 | Ag NPs/USY | 0.817 | 500 | 5 | 8 | This work |
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