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| Study on the Preparation of Polyamide Polyamine/Titanium Dioxide-loaded Activated Carbon Paper and Its Formaldehyde Removal Performance |
| Received:October 29, 2025 Revised:November 19, 2025 |
| DOI：10.11980/j.issn.0254-508X.2026.05.006 |
| Key Words:polyamide polyamine titanium dioxide activated carbon paper formaldehyde recyclability |
| Fund Project:制浆造纸国家工程实验室基金项目（ZZY2023-JBGS04）。 |
| Author Name | Affiliation | Postcode | | LI Huanhuan* | 1China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102
2National Engineering Lab for Pulp and Paper, Beijing, 100102 | 100102 | | ZHAO Lianjie | 1China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102
2National Engineering Lab for Pulp and Paper, Beijing, 100102 | 100102 | | ZHANG Yue | 1China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102
2National Engineering Lab for Pulp and Paper, Beijing, 100102 | 100102 | | MENG Fanjin | 1China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102
2National Engineering Lab for Pulp and Paper, Beijing, 100102 | 100102 | | MAO Cui* | 1China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102
2National Engineering Lab for Pulp and Paper, Beijing, 100102 | 100102 | | CAO Qingfu* | 1China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102
2National Engineering Lab for Pulp and Paper, Beijing, 100102 | 100102 |
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| Abstract:In this study， amino-terminated polyamide polyamine (PPC) was prepared via polycondensation reaction. After coordination reaction with titanium dioxide (TiO₂)， activated carbon paper was treated by impregnation method to successfully prepare PPC/TiO₂-loaded activated carbon paper， and its formaldehyde removal performance was systematically investigated. The results showed that pure TiO₂ particles were prone to agglomeration， with particle sizes concentrated around 5 058 nm. After composite modification with PPC， the particle size of TiO₂ particles was significantly reduced to about 27 nm， and the agglomeration problem was effectively alleviated. The loaded activated carbon paper could achieve efficient formaldehyde removal through the synergistic effect of physical adsorption， chemical adsorption and photocatalytic degradation. Under the irradiation of a 300 W ballast high-pressure mercury lamp， it exhibited rapid， efficient and recyclable formaldehyde purification performance： when the loading amount of PPC/TiO₂ was 20 g/m²， the formaldehyde removal rate of the loaded activated carbon paper reached 40% within 30 min， and the saturated removal rate was as high as 95.7%. In addition， it had excellent cyclic regeneration performance， and the saturated formaldehyde removal rate could still be maintained at 90.8% after 5 photocatalytic cycles. Furthermore， compared with pure activated carbon paper， the air permeability of the loaded activated carbon paper remained basically unchanged， and the tensile index was increased by 17%， which had both good air permeability and high mechanical strength， showing potential for practical application. |
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