Removal of <i>p</i>-Nitrophenol by Adsorption with 2-Phenylimidazole-Modified ZIF-8
Petrochemical wastewater contains <i>p</i>-nitrophenol, a highly toxic, bioaccumulative and persistent pollutant that can harm ecosystems and environmental sustainability. In this study, ZIF-8-PhIm was prepared for <i>p</i>-nitrophenol removal from petrochemical wastewater us...
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| Format: | Article |
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MDPI AG
2023-05-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/28/10/4195 |
| _version_ | 1797598888952070144 |
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| author | Yu Zhao Peiqing Yuan Xinru Xu Jingyi Yang |
| author_facet | Yu Zhao Peiqing Yuan Xinru Xu Jingyi Yang |
| author_sort | Yu Zhao |
| collection | DOAJ |
| description | Petrochemical wastewater contains <i>p</i>-nitrophenol, a highly toxic, bioaccumulative and persistent pollutant that can harm ecosystems and environmental sustainability. In this study, ZIF-8-PhIm was prepared for <i>p</i>-nitrophenol removal from petrochemical wastewater using solvent-assisted ligand exchange (SALE) with 2-phenylimidazole(2-PhIm). The ZIF-8-PhIm’s composition and structure were characterised using the XRD, SEM, FT-IR, <sup>1</sup>H NMR, XPS and BET methods. The adsorption effect of ZIF-8-PhIm on <i>p</i>-nitrophenol was investigated with the static adsorption method. Compared to the ZIF-8 materials, ZIF-8-PhIm exhibited stronger π-π interactions, produced a multistage pore structure with larger pore capacity and size, and had increased hydrophilicity and exposure of adsorption sites. Under optimised conditions (dose = 0.4 g/L, T = 298 K, C<sub>0</sub> = 400 mg/L), ZIF-8-PhIm achieved an adsorption amount of 828.29 mg/g, which had a greater <i>p</i>-nitrophenol adsorption capacity compared to the ZIF-8 material. The Langmuir isotherm and pseudo-second-order kinetic models appropriately described the <i>p</i>-nitrophenol adsorption of ZIF-8-PhIm. Hydrogen bonding and π-π interactions dominated the <i>p</i>-nitrophenol adsorption of ZIF-8-PhIm. It also had relatively good regeneration properties. |
| first_indexed | 2024-03-11T03:27:58Z |
| format | Article |
| id | doaj.art-ff34850431a743fc9d5a371e575d5453 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-11T03:27:58Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-ff34850431a743fc9d5a371e575d54532023-11-18T02:40:42ZengMDPI AGMolecules1420-30492023-05-012810419510.3390/molecules28104195Removal of <i>p</i>-Nitrophenol by Adsorption with 2-Phenylimidazole-Modified ZIF-8Yu Zhao0Peiqing Yuan1Xinru Xu2Jingyi Yang3International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, ChinaState Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, ChinaInternational Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, ChinaInternational Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, ChinaPetrochemical wastewater contains <i>p</i>-nitrophenol, a highly toxic, bioaccumulative and persistent pollutant that can harm ecosystems and environmental sustainability. In this study, ZIF-8-PhIm was prepared for <i>p</i>-nitrophenol removal from petrochemical wastewater using solvent-assisted ligand exchange (SALE) with 2-phenylimidazole(2-PhIm). The ZIF-8-PhIm’s composition and structure were characterised using the XRD, SEM, FT-IR, <sup>1</sup>H NMR, XPS and BET methods. The adsorption effect of ZIF-8-PhIm on <i>p</i>-nitrophenol was investigated with the static adsorption method. Compared to the ZIF-8 materials, ZIF-8-PhIm exhibited stronger π-π interactions, produced a multistage pore structure with larger pore capacity and size, and had increased hydrophilicity and exposure of adsorption sites. Under optimised conditions (dose = 0.4 g/L, T = 298 K, C<sub>0</sub> = 400 mg/L), ZIF-8-PhIm achieved an adsorption amount of 828.29 mg/g, which had a greater <i>p</i>-nitrophenol adsorption capacity compared to the ZIF-8 material. The Langmuir isotherm and pseudo-second-order kinetic models appropriately described the <i>p</i>-nitrophenol adsorption of ZIF-8-PhIm. Hydrogen bonding and π-π interactions dominated the <i>p</i>-nitrophenol adsorption of ZIF-8-PhIm. It also had relatively good regeneration properties.https://www.mdpi.com/1420-3049/28/10/4195<i>p</i>-nitrophenolzeolitic imidazolate frameworksadsorption |
| spellingShingle | Yu Zhao Peiqing Yuan Xinru Xu Jingyi Yang Removal of <i>p</i>-Nitrophenol by Adsorption with 2-Phenylimidazole-Modified ZIF-8 Molecules <i>p</i>-nitrophenol zeolitic imidazolate frameworks adsorption |
| title | Removal of <i>p</i>-Nitrophenol by Adsorption with 2-Phenylimidazole-Modified ZIF-8 |
| title_full | Removal of <i>p</i>-Nitrophenol by Adsorption with 2-Phenylimidazole-Modified ZIF-8 |
| title_fullStr | Removal of <i>p</i>-Nitrophenol by Adsorption with 2-Phenylimidazole-Modified ZIF-8 |
| title_full_unstemmed | Removal of <i>p</i>-Nitrophenol by Adsorption with 2-Phenylimidazole-Modified ZIF-8 |
| title_short | Removal of <i>p</i>-Nitrophenol by Adsorption with 2-Phenylimidazole-Modified ZIF-8 |
| title_sort | removal of i p i nitrophenol by adsorption with 2 phenylimidazole modified zif 8 |
| topic | <i>p</i>-nitrophenol zeolitic imidazolate frameworks adsorption |
| url | https://www.mdpi.com/1420-3049/28/10/4195 |
| work_keys_str_mv | AT yuzhao removalofipinitrophenolbyadsorptionwith2phenylimidazolemodifiedzif8 AT peiqingyuan removalofipinitrophenolbyadsorptionwith2phenylimidazolemodifiedzif8 AT xinruxu removalofipinitrophenolbyadsorptionwith2phenylimidazolemodifiedzif8 AT jingyiyang removalofipinitrophenolbyadsorptionwith2phenylimidazolemodifiedzif8 |