Synthesis of Magnetic Fe3O4 Nano Hollow Spheres for Industrial TNT Wastewater Treatment

被引：8

作者：

Rehman, Shafi Ur ^{[1
]}

Javaid, Sana ^{[2
,3
]}

Shahid, Muhammad ^{[1
]}

Baig, Mutawara Mahmood ^{[1
]}

Rashid, Badar ^{[4
]}

Szczepanski, Caroline R. ^{[5
]}

Curley, Sabrina J. ^{[5
]}

机构：

[1] Natl Univ Sci & Technol NUST, Sch Chem & Mat Engn SCME, Islamabad 44000, Pakistan

[2] Natl Univ Sci & Technol NUST, Sch Nat Sci SNS, Islamabad 44000, Pakistan

[3] Univ Wah, Dept Chem, Quid Ave, Rawalpindi 44000, Pakistan

[4] Natl Univ Technol NUTECH, Res & Dev R&D, Islamabad 44000, Pakistan

[5] Michigan State Univ, Dept Chem Engn & Mat Sci, E Lansing, MI 48824 USA

来源：

NANOMATERIALS | 2022年 / 12卷 / 05期

关键词：

magnetite (Fe3O4); TNT; nano hollow spheres NHS; wastewater treatment; VALENT IRON NANOPARTICLES; 2,4,6-TRINITROTOLUENE TNT; RED WATER; DEGRADATION; EXPLOSIVES; ADSORPTION; REMOVAL; NANOCOMPOSITE; IONS; HMX;

D O I：

10.3390/nano12050881

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The aim of the present work was to synthesize magnetite (Fe3O4) nano hollow spheres (NHS) via simple, one-pot, template-free, hydrothermal method. The structural, morphological, and surface analysis of Fe3O4 NHS were studied by scanning electron microscopy (SEM), x-ray diffraction technique (XRD), Fourier transform infrared spectroscopy FTIR and burner-Emmett-teller (BET). The as obtained magnetic (Fe3O4) NHS were used as an adsorbent for treating industrial trinitrotoluene (TNT) wastewater to reduce its Chemical Oxygen Demand (COD) values. Adsorption capacity (Qe) of the NHS obtained is 70 mg/g, confirming the attractive forces present between adsorbent (Fe3O4 NHS) and adsorbate (TNT wastewater). COD value of TNT wastewater was reduced to >92% in 2 h at room temperature. The adsorption capacity of Fe3O4 NHS was observed as a function of time, initial concentration, pH, and temperature. The applied Fe3O4 NHS was recovered for reuse by simply manipulating its magnetic properties with slight shift in pH of the solution. A modest decrease in Qe (5.0-15.1%) was observed after each cycle. The novel Fe3O4 NHS could be an excellent candidate for treating wastewater generated by the intermediate processes during cyclonite, cyclotetramethylene-tetranitramine (HMX), nitroglycerin (NG) production and other various environmental pollutants/species.

引用

页数：15

共 49 条

[1] Magnetic nanoparticles: preparation, physical properties, and applications in biomedicine [J].