Enhanced Hg0 removal via α-MnO2 anchored to MIL-96(Al)

Zhou, Jiacheng; Cao, Limei; Wang, Qing; Tariq, Muhammad; Xue, Yijun; Zhou, Zhenhua; Sun, Wei; Yang, Jie

doi:10.1016/j.apsusc.2019.03.261

Cited by 23 publications

(14 citation statements)

References 31 publications

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“…Remarkably, in Fig. 3(b) the peak of Mn 2p 3/2 is about 642.44 eV, which means the valence state of Mn is (4+) based on previous studies, 28,29 and Zhou 30 recently has also reported that the peak at 642.77 eV is consistent with Mn 4+ . In addition, the energy separation of 11.64 eV between Mn 2p 3/2 and Mn 2p 1/2 peaks are consistent with those in MnO 2 , and there is also another peak energy separation of 4.65 eV is obtained from the high-resolution spectrum of Mn 3s in Fig.…”

Section: Results Of Synthesized Nano-mnosupporting

confidence: 63%

Study on thermal behavior and kinetics of Al/MnO₂ poly(vinylidene fluorine) energetic nanocomposite assembled by electrospray

et al. 2019

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Section: Results Of Synthesized Nano-mnosupporting

confidence: 63%

Study on thermal behavior and kinetics of Al/MnO₂ poly(vinylidene fluorine) energetic nanocomposite assembled by electrospray

et al. 2019

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“…Yang et al. [ 310 ] loaded α‐MnO 2 evenly on the surface of MIL‐96(Al), exhibiting outstanding performance in removing elemental mercury (Hg 0 ) ( Figure a). As one of the most important MOF materials, zeolitic imidazolate frameworks (ZIF‐8) have caused widespread concern in the field of adsorption and catalysis, because of their unique topological structure, huge specific surface area, adjustable pore size, and acceptable chemical stability.…”

Section: Fabrication Of Mno2‐based Compositesmentioning

confidence: 99%

Section: Fabrication Of Mno2‐based Compositesmentioning

confidence: 99%

“…More importantly, MnO 2 particles have more hydroxyl groups on their surface and a large number of negative charge functional groups, inducing acceptable adsorption performances for cationic heavy metals. [ 227,331 ] Therefore, in recent decades, there has been great interest in using MnO 2 as an adsorbent for the removal of various heavy metals from water aquatic systems, including Cr(VI), [ 332–334 ] Pb(II), [ 312,335–338 ] Cd(II), [ 339,340 ] As(III) and As(V), [ 140,311,341 ] Cu(II), [ 342,343 ] Sb(III) and Sb(V), [ 79,344 ] Hg 0 , [ 310,345 ] Hg(II), [ 346 ] Zn(II), [ 347,348 ] Ni(II), [ 287,349 ] U(VI), [ 192,263,350,351 ] Eu, [ 352 ] etc. ( Table 1 ).…”

Section: Environmental Applicationsmentioning

confidence: 99%

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MnO₂‐Based Materials for Environmental Applications

et al. 2021

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Manganese dioxide (MnO2) is a promising photo–thermo–electric‐responsive semiconductor material for environmental applications, owing to its various favorable properties. However, the unsatisfactory environmental purification efficiency of this material has limited its further applications. Fortunately, in the last few years, significant efforts have been undertaken for improving the environmental purification efficiency of this material and understanding its underlying mechanism. Here, the aim is to summarize the recent experimental and computational research progress in the modification of MnO2 single species by morphology control, structure construction, facet engineering, and element doping. Moreover, the design and fabrication of MnO2‐based composites via the construction of homojunctions and MnO2/semiconductor/conductor binary/ternary heterojunctions is discussed. Their applications in environmental purification systems, either as an adsorbent material for removing heavy metals, dyes, and microwave (MW) pollution, or as a thermal catalyst, photocatalyst, and electrocatalyst for the degradation of pollutants (water and gas, organic and inorganic) are also highlighted. Finally, the research gaps are summarized and a perspective on the challenges and the direction of future research in nanostructured MnO2‐based materials in the field of environmental applications is presented. Therefore, basic guidance for rational design and fabrication of high‐efficiency MnO2‐based materials for comprehensive environmental applications is provided.

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“…A specific experimental system was set up for testing the Hg 0 capture ability of the catalyst, as shown in our previous studies (Zhou et al, 2019). In a test, 50 mg of a sample was placed in a quartz tube with an inner diameter of 6 mm and fixed with quartz wools.…”

Section: Experimental Apparatus and Proceduresmentioning

confidence: 99%

A novel nano-sized Co3O4@C catalyst derived from Co-MOF template for efficient Hg0 removal at low temperatures with outstanding SO2 resistance

Zhou

Shen

Yang

et al. 2021

Environ Sci Pollut Res

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Co3O4 is a promising Hg 0 removal catalyst for industrial application. Operating temperature and low sulfur resistance are two of the main problems that hinder its industrial application in Hg removal. Herein, a metal-organic framework (Co-BDC) was introduced as a sacrificial template to obtain the catalyst nano-sized Co3O4@C by calcination. Part of the organic ligands carbonized during the calcination. Carbon wrapped Co3O4 and reduced metal agglomeration. The optimal Hg 0 removal temperature of the existing cobalt oxides catalysts was always around 150 ℃, but H2-TPR showed that the oxygen atoms on the Co3O4@C were more active than those on commercial Co3O4, causing the Hg 0 removal temperature window of Co3O4@C to shift to lower temperatures. The Hg 0 removal efficiency of Co3O4@C could reach almost 100% even at 25 ℃. In the meanwhile, Co3O4@C also showed a strong SO2 resistance at ambient temperature. Experimental results and characterization proved that SO2 did not compete with Hg 0 on the surface of Co3O4 at low temperatures. On the contrary, it participated in the oxidation of Hg 0 . This is a great improvement for Co3O4 catalyst in Hg 0 removal. It reduces the restrictions on the application of Co3O4 in Hg 0 removal. Co3O4@C shows considerable potential as an Hg 0 removal catalyst.

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Enhanced Hg0 removal via α-MnO2 anchored to MIL-96(Al)

Cited by 23 publications

References 31 publications

Study on thermal behavior and kinetics of Al/MnO₂ poly(vinylidene fluorine) energetic nanocomposite assembled by electrospray

Study on thermal behavior and kinetics of Al/MnO₂ poly(vinylidene fluorine) energetic nanocomposite assembled by electrospray

MnO₂‐Based Materials for Environmental Applications

A novel nano-sized Co3O4@C catalyst derived from Co-MOF template for efficient Hg0 removal at low temperatures with outstanding SO2 resistance

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Enhanced Hg0 removal via α-MnO2 anchored to MIL-96(Al)

Cited by 23 publications

References 31 publications

Study on thermal behavior and kinetics of Al/MnO2 poly(vinylidene fluorine) energetic nanocomposite assembled by electrospray

Study on thermal behavior and kinetics of Al/MnO2 poly(vinylidene fluorine) energetic nanocomposite assembled by electrospray

MnO2‐Based Materials for Environmental Applications

A novel nano-sized Co3O4@C catalyst derived from Co-MOF template for efficient Hg0 removal at low temperatures with outstanding SO2 resistance

Contact Info

Product

Resources

About

Study on thermal behavior and kinetics of Al/MnO₂ poly(vinylidene fluorine) energetic nanocomposite assembled by electrospray

Study on thermal behavior and kinetics of Al/MnO₂ poly(vinylidene fluorine) energetic nanocomposite assembled by electrospray

MnO₂‐Based Materials for Environmental Applications