Selective Adsorption, Reduction, and Separation of Au(III) from Aqueous Solution with Amine-Type Non-Woven Fabric Adsorbents
Herein, adsorption, separation, and reduction of Au(III) from its aqueous solution were studied with different amine-type, non-woven fabric (NF) adsorbents fabricated with radiation-induced graft polymerization. The adsorbents exhibited different adsorption capacities of Au(III) over a concentration...
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MDPI AG
2020-07-01
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| Online Access: | https://www.mdpi.com/1996-1944/13/13/2958 |
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| author | Chen Huang Xiao Xu Junxuan Ao Lin Ma Feng Ye Ziqiang Wang Lu Xu Xiaoyan Zhao Hongjuan Ma |
| author_facet | Chen Huang Xiao Xu Junxuan Ao Lin Ma Feng Ye Ziqiang Wang Lu Xu Xiaoyan Zhao Hongjuan Ma |
| author_sort | Chen Huang |
| collection | DOAJ |
| description | Herein, adsorption, separation, and reduction of Au(III) from its aqueous solution were studied with different amine-type, non-woven fabric (NF) adsorbents fabricated with radiation-induced graft polymerization. The adsorbents exhibited different adsorption capacities of Au(III) over a concentration range of hydrochloric acid (HCl) from 5 mM to 5 M, and the diethylamine (DEA)-type adsorbent performed best under all test conditions. The DEA-type adsorbent was inert toward other metal ions, including Cu(II), Pb(II), Ni(II), Zn(II) and Li(I), within the fixed concentration range of HCl. Flow-through adsorption tests indicated DEA-type adsorbent exhibited a rapid recovery and high adsorption capacity of 3.23 mmol/g. Meanwhile, DEA-type adsorbent also exhibited high selectivity and rapid extraction for Au(III) from its mixed solution with Pt(IV) and Pd(II). After adsorption, the reduction of Au(III) was confirmed by XRD spectra, TEM, and digital micrograph images. The results indicated that nano-sized Au particles were mainly concentrated on the adsorbent in 5 mM HCl solution. In 1 M HCl solution, not only nano-sized Au particles were found, but also micro-size Au plates precipitation occurred. This study provides a novel material for selective and efficient gold uptake from aqueous solution. |
| first_indexed | 2024-03-10T18:43:10Z |
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| id | doaj.art-0558d05cacb24e868957e05945b6469d |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T18:43:10Z |
| publishDate | 2020-07-01 |
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| spelling | doaj.art-0558d05cacb24e868957e05945b6469d2023-11-20T05:41:48ZengMDPI AGMaterials1996-19442020-07-011313295810.3390/ma13132958Selective Adsorption, Reduction, and Separation of Au(III) from Aqueous Solution with Amine-Type Non-Woven Fabric AdsorbentsChen Huang0Xiao Xu1Junxuan Ao2Lin Ma3Feng Ye4Ziqiang Wang5Lu Xu6Xiaoyan Zhao7Hongjuan Ma8School of Petrochemical Engineering, Changzhou University, Changzhou 213164, ChinaShanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, ChinaShanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, ChinaShanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, ChinaShanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, ChinaShanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, ChinaShanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, ChinaSchool of Petrochemical Engineering, Changzhou University, Changzhou 213164, ChinaShanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, ChinaHerein, adsorption, separation, and reduction of Au(III) from its aqueous solution were studied with different amine-type, non-woven fabric (NF) adsorbents fabricated with radiation-induced graft polymerization. The adsorbents exhibited different adsorption capacities of Au(III) over a concentration range of hydrochloric acid (HCl) from 5 mM to 5 M, and the diethylamine (DEA)-type adsorbent performed best under all test conditions. The DEA-type adsorbent was inert toward other metal ions, including Cu(II), Pb(II), Ni(II), Zn(II) and Li(I), within the fixed concentration range of HCl. Flow-through adsorption tests indicated DEA-type adsorbent exhibited a rapid recovery and high adsorption capacity of 3.23 mmol/g. Meanwhile, DEA-type adsorbent also exhibited high selectivity and rapid extraction for Au(III) from its mixed solution with Pt(IV) and Pd(II). After adsorption, the reduction of Au(III) was confirmed by XRD spectra, TEM, and digital micrograph images. The results indicated that nano-sized Au particles were mainly concentrated on the adsorbent in 5 mM HCl solution. In 1 M HCl solution, not only nano-sized Au particles were found, but also micro-size Au plates precipitation occurred. This study provides a novel material for selective and efficient gold uptake from aqueous solution.https://www.mdpi.com/1996-1944/13/13/2958irradiationgraft polymerizationAu(III)adsorptionselectivityreduction |
| spellingShingle | Chen Huang Xiao Xu Junxuan Ao Lin Ma Feng Ye Ziqiang Wang Lu Xu Xiaoyan Zhao Hongjuan Ma Selective Adsorption, Reduction, and Separation of Au(III) from Aqueous Solution with Amine-Type Non-Woven Fabric Adsorbents Materials irradiation graft polymerization Au(III) adsorption selectivity reduction |
| title | Selective Adsorption, Reduction, and Separation of Au(III) from Aqueous Solution with Amine-Type Non-Woven Fabric Adsorbents |
| title_full | Selective Adsorption, Reduction, and Separation of Au(III) from Aqueous Solution with Amine-Type Non-Woven Fabric Adsorbents |
| title_fullStr | Selective Adsorption, Reduction, and Separation of Au(III) from Aqueous Solution with Amine-Type Non-Woven Fabric Adsorbents |
| title_full_unstemmed | Selective Adsorption, Reduction, and Separation of Au(III) from Aqueous Solution with Amine-Type Non-Woven Fabric Adsorbents |
| title_short | Selective Adsorption, Reduction, and Separation of Au(III) from Aqueous Solution with Amine-Type Non-Woven Fabric Adsorbents |
| title_sort | selective adsorption reduction and separation of au iii from aqueous solution with amine type non woven fabric adsorbents |
| topic | irradiation graft polymerization Au(III) adsorption selectivity reduction |
| url | https://www.mdpi.com/1996-1944/13/13/2958 |
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