Ultra-high capacity and anti-interference for Cr(VI) removal by tannin-polyvinylimine modified graphite carbon nitride
文献类型：期刊论文
| 作者 | Sun, Wen1,2,3; Wang, Rui1,2; Li, Lingfei2,3; Zhao, Jun2,3; Liu, Bianhua1,2,3,4 |
| 刊名 | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
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| 出版日期 | 2024-08-01 |
| 卷号 | 12 |
| 关键词 | Cr(VI) removal (PEI-TA)-g-C 3 N 4 composite Ultra -high adsorption Anti-interference |
| ISSN号 | 2213-2929 |
| DOI | 10.1016/j.jece.2024.113131 |
| 通讯作者 | Zhao, Jun(zjun@iim.ac.cn) ; Liu, Bianhua(bhliu@iim.ac.cn) |
| 英文摘要 | To combat the increasingly serious water pollution caused by heavy metal ions, the development of efficient adsorbents is of great significance. In this study, a novel composite adsorbent for Cr(VI) removal was smartly designed using environmentally friendly materials such as tannic acid (TA) and polyethyleneimine (PEI) for surface modification of g-C 3 N 4 nanosheets through covalent assembly of polyphenols and amines. The obtained (PEI-TA)-g-C 3 N 4 composite was capable of efficiently and quickly adsorbing Cr(VI) in water, with a maximum adsorption capacity of 769.23 mg/g at 308 K (35 degrees C), which was much higher than most reported Cr(VI) adsorbents. Notably, (PEI-TA)-g-C 3 N 4 could reduce highly toxic Cr(VI) to low toxic Cr(III) and effectively adsorb it. The Cr(VI) adsorption process was a spontaneous thermal adsorption process that conformed to the pseudosecond-order kinetic model and Langmuir isotherm model. In addition, the excellent photothermal performance of (PEI-TA)-g-C 3 N 4 further accelerated the adsorption of Cr(VI). Moreover, the strong anti-interference ability of (PEI-TA)-g-C 3 N 4 composite against anions and other metal ions enabled it to effectively remove Cr (VI) in complex environments, expanding its practical application scenarios. The polymer coatings rich in phenolic hydroxyl- and amine-rich formed on the large surface area of g-C 3 N 4 and the protonation of the amino groups are the keys for (PEI-TA)-g-C 3 N 4 composite to have ultra-high adsorption performance and strong antiinterference ability towards Cr(VI). The designed strategy of this metal-free and environmentally friendly composite with ultra-high removal of Cr(VI) capability from wastewater provides new ideas for developing green, inexpensive, and efficient adsorbents. |
| WOS关键词 | HEXAVALENT CHROMIUM ; EFFICIENT REMOVAL ; ADSORPTION ; COMPOSITE ; IONS ; PHOTOCATALYST ; ADSORBENTS ; NANOSHEETS ; CU(II) ; WATER |
| 资助项目 | National Key Research and Development Project[2021YFD2000200] ; Open Fund of Key Laboratory of Agricultural Sensors, Ministry of Agriculture and Rural Affairs ; Anhui Provincial Key Laboratory of Smart Agricultural Technology and Equipment of Anhui Agricultural University[KLAS2022KF001] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001265723900001 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | National Key Research and Development Project ; Open Fund of Key Laboratory of Agricultural Sensors, Ministry of Agriculture and Rural Affairs ; Anhui Provincial Key Laboratory of Smart Agricultural Technology and Equipment of Anhui Agricultural University |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/137018]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Zhao, Jun; Liu, Bianhua |
| 作者单位 | 1.Univ Sci & Technol China, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Hefei Inst Phys Sci, Hefei 230031, Anhui, Peoples R China 3.Chinese Acad Sci, Hefei Inst Phys Sci, Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Peoples R China 4.Anhui Agr Univ, Key Lab Agr Sensors, Anhui Prov Key Lab Smart Agr Technol & Equipment, Minist Agr & Rural Affairs, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Wen,Wang, Rui,Li, Lingfei,et al. Ultra-high capacity and anti-interference for Cr(VI) removal by tannin-polyvinylimine modified graphite carbon nitride[J]. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,2024,12. |
| APA | Sun, Wen,Wang, Rui,Li, Lingfei,Zhao, Jun,&Liu, Bianhua.(2024).Ultra-high capacity and anti-interference for Cr(VI) removal by tannin-polyvinylimine modified graphite carbon nitride.JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,12. |
| MLA | Sun, Wen,et al."Ultra-high capacity and anti-interference for Cr(VI) removal by tannin-polyvinylimine modified graphite carbon nitride".JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 12(2024). |
入库方式： OAI收割
来源：合肥物质科学研究院
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