Magnetic iron–manganese binary oxide supported on carbon nanofiber (Fe3−xMnxO4/CNF) for efficient removal of Hg0 from coal combustion flue gas

Yang, Jianping; Zhao, Yongchun; Liang, Shaofeng; Zhang, Shibo; Ma, Siming; Li, Hailong; Zhang, Junying; Chen, Zheng

doi:10.1016/j.cej.2017.10.004

Cited by 143 publications

(75 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The airborne elemental mercury (Hg 0 ) is the most dominant and problematic form of mercury [1][2][3] because it is highly volatile and insoluble in water [4][5][6]. It can travel in the air over a long-distance, bio-accumulate in the ecosystem and is persistent in the environment [7]. Therefore, it has significant impacts on ecosystem and human being's health.…”

Section: Introductionmentioning

confidence: 99%

Structural defects in 2D MoS2 nanosheets and their roles in the adsorption of airborne elemental mercury

Zhao

Zheng

et al. 2019

Journal of Hazardous Materials

111

View full text Add to dashboard Cite

In this research, ab initio calculations and experimental approach were adopted to reveal the mechanism of Hg 0 adsorption on MoS2 nanosheets that contain various types of defects. The ab initio calculation showed that, among different structural defects, S vacancies (Vs) in the MoS2 nanosheets exhibited outstanding potential to strongly adsorb Hg 0. The MoS2 material was then prepared in a controlled manner under conditions, such as temperature, concentration of precursors, etc., that were determined by adopting the new method developed in this study. Characterisation confirmed that the MoS2 material is of graphene-like layered structure with abundant structural defects. The integrated dynamic and steady state (IDSS) testing demonstrated that the Vs-rich nanosheets showed excellent Hg 0 adsorption capability. In addition, ab initial calculation on charge density difference, PDOS, and adsorption pathways revealed that the adsorption of Hg 0 on the Vs-rich MoS2 surface is non-activated chemisorption.

show abstract

Section: Introductionmentioning

confidence: 99%

Structural defects in 2D MoS2 nanosheets and their roles in the adsorption of airborne elemental mercury

Zhao

Zheng

et al. 2019

Journal of Hazardous Materials

111

View full text Add to dashboard Cite

show abstract

“…Additionally, the Chinese government deposited the ratification of the Minamata Convention on Mercury, and became the 30th country of the Convention on August 31st, 2016. This means that the limit of mercury emission from coal-fired power plants in China will be stricter [3].…”

Section: Introductionmentioning

confidence: 99%

“…One way to enhance mercury oxidation ability was to add various auxiliary metal components into the Mn-based catalyst and keep low-temperature activity. Ce [17,24,25], Fe [3,15], and Co [16] were extensively loaded into the Mn-based catalyst. Li et al [19] reported that the Mn-Ce/Ti catalyst exhibited high mercury oxidation ability at 150-250 • C. He et al [25] stated that 6% Ce-6% MnO x /Ti-PILC exhibited optimal mercury oxidation ability at 250 • C, with a mercury oxidation efficiency of 72%.…”

Section: Introductionmentioning

confidence: 99%

Effect of Molybdenum on the Activity Temperature Enlarging of Mn-Based Catalyst for Mercury Oxidation

Zhao

Liang³

et al. 2020

Catalysts

View full text Add to dashboard Cite

The MnO2/TiO2 (TM5) catalyst modified by molybdenum was used for mercury oxidation at different temperatures in a fixed-bed reactor. The addition of molybdenum into TM5 was identified as significantly enlarging the optimal temperature range for mercury oxidation. The optimal mercury oxidation temperature of TM5 was only 200 °C, with an oxidation efficiency of 95%. However, the mercury oxidation efficiency of TM5 was lower than 60% at other temperatures. As for MnO2–MoO3/TiO2 (TM5Mo5), the mercury oxidation efficiency was above 80% at 200–350 °C. In particular at 250 °C, the mercury oxidation efficiency of TM5Mo5 was over 93%. Otherwise, the gaseous O2, which could supplement the lattice oxygen in the catalytic reaction, played an important role in the process of mercury oxidation over TM5Mo5. The results of X-ray photoelectron spectroscopy (XPS) suggested that mercury oxidized by O2 over TM5Mo5 followed the Mars–Maessen mechanism.

show abstract

“…Carbon nanofibers decorated with iron oxide are also very effective in the removal of pollution contaminants from water [9][10][11][12][13][14]. The embedded iron oxide nanoparticles or iron-transition metal binary oxides play the important roles as poisoning metal sorbents.…”

Section: Introductionmentioning

confidence: 99%

“…The heavy metals such as mercury and chromium can be effectively removed by the iron oxide/carbon fibers. Yang et al [9] demonstrated the removal of Hg 0 from coal combustion flue gas by the magnetic iron-manganese binary oxide supported on carbon nanofiber (Fe 3-x Mn x O 4 /CNF). Iron oxide containing nanofibers are capable of removing arsenic compounds from water [12].…”

Section: Introductionmentioning

confidence: 99%

Processing Iron Oxide Nanoparticle-Loaded Composite Carbon Fiber and the Photosensitivity Characterization

Gan

Panahi

et al. 2019

Fibers

View full text Add to dashboard Cite

In this work, iron oxide nanoparticle loaded carbon fibers were prepared by electrohydrodynamic co-casting a polymer and particle mixture followed by carbonization. The precursor used to generate carbon fibers was a linear molecular chain polymer: polyacrylonitrile (PAN). A solution containing iron (II, III) oxide (Fe3O4) particles and the PAN polymer dissolved in dimethylformamide (DMF) was electrohydrodynamically co-cast into fibers. The fibers were stabilized in air and carbonized in hydrogen at elevated temperatures. The microstructure and composition of the fibers were analyzed using scanning electron microscopy (SEM). A quantitative metallographic analysis method was used to determine the fiber size. It was found that the iron (II, III) oxide particles distributed uniformly within the carbonized fibers. Photosensitivity of the particle containing fibers was characterized through measuring the open circuit potential of the fiber samples under the visible light illumination. Potential applications of the fibers for photovoltaics and photonic sensing were discussed.

show abstract

Magnetic iron–manganese binary oxide supported on carbon nanofiber (Fe3−xMnxO4/CNF) for efficient removal of Hg0 from coal combustion flue gas

Cited by 143 publications

References 49 publications

Structural defects in 2D MoS2 nanosheets and their roles in the adsorption of airborne elemental mercury

Structural defects in 2D MoS2 nanosheets and their roles in the adsorption of airborne elemental mercury

Effect of Molybdenum on the Activity Temperature Enlarging of Mn-Based Catalyst for Mercury Oxidation

Processing Iron Oxide Nanoparticle-Loaded Composite Carbon Fiber and the Photosensitivity Characterization

Contact Info

Product

Resources

About