Enhanced removal of hexavalent chromium from aqueous media using a highly stable and magnetically separable rosin-biochar-coated TiO2@C nanocomposite
文献类型：期刊论文
| 作者 | Liu, Guijian2,3; Yousaf, Balal2,3; Rashid, Audil4; Amina1; Mian, Md Manik2; Ullah, Habib2; Wang, Ruwei3; Abbas, Qumber2 |
| 刊名 | RSC ADVANCES
 |
| 出版日期 | 2018 |
| 卷号 | 8期号:46页码:25983-25996 |
| DOI | 10.1039/c8ra02860e |
| 文献子类 | Article |
| 英文摘要 | Recently, nanosized metal-oxides have been extensively investigated for their ability to remove metal ions from aqueous media. However, the activity and capacity of these nanosized metal-oxides for removing metal ions decrease owing to their agglomeration in aqueous media. Herein, we synthesized a highly stable and magnetically separable rosin-biochar-coated (RBC) TiO2@C nanocomposite through a facile and environment-friendly wet chemical coating process, followed by a one-step heating route (pyrolysis) for efficient removal of Cr(VI) from aqueous solution. An array of techniques, namely, TEM, HRTEM, TEM-EDS, XRD, FTIR, VSM, BET and TGA, were used to characterize the prepared nanocomposite. The pyrolysis of rosin into biochar and the fabrication of Fe onto the RBC-TiO2@C nanocomposite were confirmed by FTIR and XRD examination, respectively. Moreover, TEM and HRTEM images and elemental mapping using TEM-EDS showed good dispersion of iron and carbon on the surface of the RBC-TiO2@C nanocomposite. Sorption of Cr(VI) ions on the surface of the RBC-TiO2@C nanocomposite was very fast and efficient, having a removal efficiency of similar to 95% within the 1st minute of reaction. Furthermore, thermodynamic analysis showed negative values of Gibb's free energy at all five temperatures, indicating that the adsorption of Cr(VI) ions on the RBC-TiO2@C nanocomposite was favorable and spontaneous. Conclusively, our results indicate that the RBC-TiO2@C nanocomposite can be used for efficient removal of Cr(VI) from aqueous media due to its novel synthesis and extraordinary adsorption efficacy during a short time period. |
| WOS关键词 | NANO-METAL OXIDES ; GRAPHENE OXIDE ; CR(VI) REMOVAL ; HEAVY-METALS ; ARSENIC REMOVAL ; WASTE-WATER ; ADSORPTION ; CARBON ; FABRICATION ; PB(II) |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000441685100014 |
| 源URL | [http://ir.ieecas.cn/handle/361006/5118]  |
| 专题 | 地球环境研究所_黄土与第四纪地质国家重点实验室（2010~） |
| 作者单位 | 1.Anhui Agr Univ, Sch Resource & Environm, Anhui Prov Key Lab Farmland Ecol Conservat & Poll, Hefei 230026, Anhui, Peoples R China 2.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Anhui, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Shaanxi, Peoples R China 4.PMAS Arid Agr Univ Rawalpindi, Dept Environm Sci, Ecohlth Res Grp, Rawalpindi, Pakistan |
| 推荐引用方式 GB/T 7714 | Liu, Guijian,Yousaf, Balal,Rashid, Audil,et al. Enhanced removal of hexavalent chromium from aqueous media using a highly stable and magnetically separable rosin-biochar-coated TiO2@C nanocomposite[J]. RSC ADVANCES,2018,8(46):25983-25996. |
| APA | Liu, Guijian.,Yousaf, Balal.,Rashid, Audil.,Amina.,Mian, Md Manik.,...&Abbas, Qumber.(2018).Enhanced removal of hexavalent chromium from aqueous media using a highly stable and magnetically separable rosin-biochar-coated TiO2@C nanocomposite.RSC ADVANCES,8(46),25983-25996. |
| MLA | Liu, Guijian,et al."Enhanced removal of hexavalent chromium from aqueous media using a highly stable and magnetically separable rosin-biochar-coated TiO2@C nanocomposite".RSC ADVANCES 8.46(2018):25983-25996. |
入库方式： OAI收割
来源：地球环境研究所
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