Enhanced removal of hexavalent chromium from aqueous media using a highly stable and magnetically separable rosin-biochar-coated TiO2@C nanocomposite
Yousaf, Balal1,2; Liu, Guijian1,2; Abbas, Qumber1; Wang, Ruwei2; Ullah, Habib1; Mian, Md Manik1; Amina3; Rashid, Audil4
2018
发表期刊RSC ADVANCES
卷号8期号:46页码:25983-25996
文章类型Article
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标题词Science & Technology ; Physical Sciences
DOI10.1039/c8ra02860e
关键词[WOS]NANO-METAL OXIDES ; GRAPHENE OXIDE ; CR(VI) REMOVAL ; HEAVY-METALS ; ARSENIC REMOVAL ; WASTE-WATER ; ADSORPTION ; CARBON ; FABRICATION ; PB(II)
收录类别SCI
语种英语
WOS研究方向Chemistry
WOS类目Chemistry, Multidisciplinary
WOS记录号WOS:000441685100014
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5118
专题黄土与第四纪地质国家重点实验室(2010~)
作者单位1.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Anhui, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Shaanxi, Peoples R China
3.Anhui Agr Univ, Sch Resource & Environm, Anhui Prov Key Lab Farmland Ecol Conservat & Poll, Hefei 230026, Anhui, Peoples R China
4.PMAS Arid Agr Univ Rawalpindi, Dept Environm Sci, Ecohlth Res Grp, Rawalpindi, Pakistan
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Yousaf, Balal,Liu, Guijian,Abbas, Qumber,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 Yousaf, Balal.,Liu, Guijian.,Abbas, Qumber.,Wang, Ruwei.,Ullah, Habib.,...&Rashid, Audil.(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 Yousaf, Balal,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.
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