Development of a novel hierarchical porous and hydrophobic silica from montmorillonite for benzene adsorption
文献类型：期刊论文
| 作者 | He, Shiya1,3,4; Zhu, Runliang1,3,4 ; Chen, Qingze1,3,4; Tang, Ning2; Ji, Shichao1,3,4; Wei, Hongyan1,3,4; Du, Jing1,3,4; Yang, Yixuan1,3,4; Zhu, Jianxi1,3,4
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| 刊名 | SEPARATION AND PURIFICATION TECHNOLOGY
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| 出版日期 | 2024-01-15 |
| 卷号 | 329页码:10 |
| 关键词 | Montmorillonite Porous materials Benzene adsorption Hierarchically Hydrophobicity |
| ISSN号 | 1383-5866 |
| DOI | 10.1016/j.seppur.2023.125031 |
| 英文摘要 | A hierarchical porous and hydrophobic adsorbent is the key to removing the volatile organic compounds through adsorption technology, especially under humidity conditions. In this work, we synthesized a hierarchical porous and hydrophobic montmorillonite-derived adsorbent by a facile strategy, i.e., a combination of ball milling, acid activation, and thermal treatment. Our results showed that ball milling could efficiently grind the montmorillonite sheets into small fragments, which caused the rapid dissolution of octahedral cations from the edges of these fragments during the subsequent acid activation process. The resulting porous silica showed more porosity (including micropores and mesopores) and a larger specific surface area (664 m2 g-1), compared with the product (345 m2 g-1) obtained by only acid washing without ball milling. The next thermal treatment readily removed the surface hydroxyl of porous silica, leading to the formation of the target product (HP-SiO2) with enhanced hydrophobicity and well-preserved pore structures. As an adsorbent for benzene molecules, HP-SiO2 exhibited a high dynamic benzene adsorption capacity (257.1 mg g-1) due to the large specific surface area and abundant micropores. Furthermore, HP-SiO2 maintained outstanding benzene adsorption performance under different humidity conditions (with a high adsorption capacity of 185.0 mg g-1 even under 40% relative humidity). Our work provided a low-cost and facile strategy for the synthesis of hierarchical porous and hydrophobic silica materials, and this adsorbent would serve as a promising adsorbent for the elimination of practical volatile organic compounds. |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001083850600001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/78783]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | Chen, Qingze |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou 510640, Peoples R China 2.Xiangtan Univ, Coll Environm & Resources, Dept Environm Sci & Engn, Xiangtan 411105, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Shiya,Zhu, Runliang,Chen, Qingze,et al. Development of a novel hierarchical porous and hydrophobic silica from montmorillonite for benzene adsorption[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2024,329:10. |
| APA | He, Shiya.,Zhu, Runliang.,Chen, Qingze.,Tang, Ning.,Ji, Shichao.,...&Zhu, Jianxi.(2024).Development of a novel hierarchical porous and hydrophobic silica from montmorillonite for benzene adsorption.SEPARATION AND PURIFICATION TECHNOLOGY,329,10. |
| MLA | He, Shiya,et al."Development of a novel hierarchical porous and hydrophobic silica from montmorillonite for benzene adsorption".SEPARATION AND PURIFICATION TECHNOLOGY 329(2024):10. |
入库方式： OAI收割
来源：广州地球化学研究所
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