Fabrication of Stabilized Fe–Mn Binary Oxide Nanoparticles: Effective Adsorption of 17β-Estradiol and Influencing Factors

Qimeng Ning, Zhihong Yin, Yunguo Liu, Xiaofei Tan, Guangming Zeng, Luhua Jiang, Shaobo Liu, Sirong Tian, Ni Liu and Xiaohua Wang
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Qimeng Ning: College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
Zhihong Yin: College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
Yunguo Liu: College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
Xiaofei Tan: College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
Guangming Zeng: College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
Luhua Jiang: College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
Shaobo Liu: School of Architecture and Art, Central South University, Changsha 410082, China
Sirong Tian: College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
Ni Liu: College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
Xiaohua Wang: College of Environmental Science and Engineering, Hunan University, Changsha 410082, China

IJERPH, 2018, vol. 15, issue 10, 1-17

Abstract: Fe–Mn binary oxide nanoparticles (FMBON) were reported to be high performance as adsorbent for pollutants removal from aqueous solution. However, there are still limitations in practice application due to the FMBON tend to aggregate into the micro millimeter level. In order to avoid the agglomeration of nanoparticles, this work synthesized the stabilized Fe–Mn binary oxide nanoparticles (CMC-FMBON) by using water-soluble carboxymethyl celluloses (CMC) as the stabilizer. The characteristics of CMC-FMBON and FMBON were measured by using Transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, and Zeta potential. This work systematically investigated the adsorption capacity of CMC-FMBON for 17β-estradiol (E2) and the influences of external environmental factors on E2 removal. The results indicated that CMC-FMBON had much smaller particles, wider dispersion and larger surface area than the FMBON. CMC-FMBON showed better adsorption performance for E2 than FMBON with the maximum adsorption capacity of CMC-FMBON and FMBON were 124.10 and 98.14 mg/g at 298 K, respectively. The experimental data can be well fitted by the model of pseudo-second-order and Langmuir model. The E2 removal by CMC-FMBON was obviously dependent on pH with the maximum adsorption occurring when the pH was acidic. The removal capacity of CMC-FMBON increased when enhancing ionic strength in solution. Background electrolytes promoted slightly E2 adsorption process whereas the presence of humic acid inhibited the E2 removal. π-π interactions, hydrogen bonds, and oxidation might be responsible for E2 removal. This research suggested that the CMC-FMBON has been considered to be a cost-efficient adsorbent for removing E2 from water.

Keywords: stabilized Fe–Mn binary oxide nanoparticles; oxidation; 17β-estradiol; adsorption (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2018
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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