Akaganeite nanorices deposited muscovite mica surfaces as sunlight active green photocatalyst

Senthilnathan, Anoja; Dissanayake, D. M. S. N.; Chandrakumara, G. T. D.; Mantilaka, M.M.M.G.P.G.; Rajapakse, R.M.G.; Pitawala, H.M.T.G.A.; Silva, K.M. Nalin de

doi:10.1098/rsos.182212

Cited by 12 publications

(8 citation statements)

References 43 publications

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“…For the ITO-coated glass, the presence of ITO on the glass surface is also confirmed by its XRD pattern. Additionally, the XRD pattern for mica is consistent with previously published data, confirming that the cleavage plane is along the (001) plane …”

Section: Resultssupporting

confidence: 89%

Thermoelectric Performance of Tetrahedrite (Cu₁₂Sb₄S₁₃) Thin Films: The Influence of the Substrate and Interlayer

Liu,

Kretinin,

Liu

et al. 2023

ACS Appl. Electron. Mater.

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In the present work, tetrahedrite Cu12Sb4S13 thin films were deposited on various substrates via aerosol-assisted chemical vapor deposition (AACVD) using diethyldithiocarbamate complexes as precursors. A buffer layer of Sb2O3 with a small lattice mismatch to Cu12Sb4S13 was applied to one of the glass substrates to improve the quality of the deposited thin film. The buffer layer increased the coverage of the Cu12Sb4S13 thin film, resulting in improved electrical transport properties. The growth of the Cu12Sb4S13 thin films on the other substrates, including ITO-coated glass, a SiO2-coated Si wafer, and mica, was also investigated. Compared to the films grown on the other substrates, the Cu12Sb4S13 thin film deposited on the SiO2-coated Si wafer showed a dense and compact microstructure and a larger grain size (qualities that are beneficial for carrier transport), yielding a champion power factor (PF) of ∼362 μW cm–1 K–2 at 625 K. The choice of substrate strongly influenced the composition, microstructure, and electrical transport properties of the deposited Cu12Sb4S13 thin film. At 460 K, the highest zT value that was obtained for the thin films was ∼0.18. This is comparable to values reported for Cu–Sb–S bulk materials at the same temperature. Cu12Sb4S13 thin films deposited using AACVD are promising for thermoelectric applications. To the best of our knowledge, the first full thermoelectric characterization of the Cu12Sb4S13 thin film is performed in this work.

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Section: Resultssupporting

confidence: 89%

Thermoelectric Performance of Tetrahedrite (Cu₁₂Sb₄S₁₃) Thin Films: The Influence of the Substrate and Interlayer

Liu,

Kretinin,

Liu

et al. 2023

ACS Appl. Electron. Mater.

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“…As for the results of the adsorption test, sericite successfully reduced the concentration via adsorption by ≤25%. Sericite in the tetrahedral sheets provided negative charges on the surface 35 to attract the cationic MB dye. Accordingly, sericite has the beneficial advantage of serving as a binder for cationic adsorbates, improving the removal efficiency of MB.…”

Section: Removal Of Mbmentioning

confidence: 99%

Photocatalytic degradation of methylene blue by UV‐assistant TiO₂ and natural sericite composites

Huang

2020

J of Chemical Tech & Biotech

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BACKGROUND In order to prepare an environmental‐friendly photocatalyst, natural mineral sericite is used as the substrate of photocatalysts. In this study, the TiO2‐sericite composite materials are synthesized by a facile sol‐gel process, followed via a calcination treatment that can improve the crystallinity of the nano‐sized TiO2. The prepared composites are characterized by XRD, Raman, FTIR, UV‐vis, SEM, and BETanalysis. The effects of the molecular ratio of TiO2 to sericite and the calcination temperature are also examined. RESULTS Sericite is not only served as a substrate for nano‐sized TiO2 to fabricate the micro‐sized composite materials but also affect the formation of different crystalliniteTiO2. The characteristic results show that the addition of sericite can stabilize the crystal phase of TiO2; therefore, the sericite can maintain the crystalline anatase of TiO2 even after the calcination at 700 °C and 900 °C. Accordingly, the adsorption test and the photocatalytic degradation of methylene blue are conducted to verify the photocatalytic performance of the TiO2‐sericite composite materials. It indicates that the synergetic effect of TiO2‐sericite composites can facilitate the photocatalytic degradation of TiO2 accompanied by the initial adsorption of methylene blue by sericite. Based on the presence of various radicals, including ·OH, ·O2−, and 1O2, the mechanism of photocatalytic degradation of methylene blue via TiO2‐sericite composites are successfully proposed. CONCLUSION The excellent activity reveals that TiO2‐sericite composites are with potential employed as ecological‐friendly photocatalysts in the degradation of pollutants. © 2020 Society of Chemical Industry

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“…Chlorine was observed in the inner rust particle as an acicular single crystal with a size of about 100 nm, as shown in Figure 10 a. This is the major characteristic of akaganeite [ 27 ]. In Figure 10 b, Cr and Cl − were observed together in the inner rust particle.…”

Section: Resultsmentioning

confidence: 99%

Effect of Cr on Aqueous and Atmospheric Corrosion of Automotive Carbon Steel

Cho

Yoo

et al. 2021

Materials

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This study investigated the effect of Cr alloying element on the corrosion properties of automotive carbon steel (0.1C, 0.5Si, 2.5Mn, Fe Bal., composition given in wt.%) in aqueous and atmospheric conditions using electrochemical measurement and cyclic corrosion tests. Three steels with 0, 0.3, and 0.5 wt.% Cr were studied by electrochemical impedance spectroscopy. Polarization resistance (Rp) of 0.3 Cr and 0.5 Cr steels was higher than that of 0 Cr steel, and the Rp also increased as the Cr content increased. Therefore, Cr increases the corrosion resistance of automotive carbon steel immersed in a chloride ion (Cl−)-containing aqueous solution. In the cyclic corrosion test results, Cl− was concentrated at the metal/rust interface in all of the steels regardless of Cr content. The Cl− was uniformly concentrated and distributed on the 0 Cr steel, but locally and non-uniformly concentrated on the Cr-added steels. The inner rust layer consisted of β-FeOOH containing Cl− and Cr-goethite, while the outer rust layer was composed of amorphous iron oxyhydroxide mixed with various types of rust. FeCl2 and CrCl3 are formed from the Cl− nest developed in the early stage, and the pitting at CrCl3-formed regions are locally accelerated because Cr is strongly hydrolyzed to a very low pH.

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Akaganeite nanorices deposited muscovite mica surfaces as sunlight active green photocatalyst

Cited by 12 publications

References 43 publications

Thermoelectric Performance of Tetrahedrite (Cu₁₂Sb₄S₁₃) Thin Films: The Influence of the Substrate and Interlayer

Thermoelectric Performance of Tetrahedrite (Cu₁₂Sb₄S₁₃) Thin Films: The Influence of the Substrate and Interlayer

Photocatalytic degradation of methylene blue by UV‐assistant TiO₂ and natural sericite composites

Effect of Cr on Aqueous and Atmospheric Corrosion of Automotive Carbon Steel

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Akaganeite nanorices deposited muscovite mica surfaces as sunlight active green photocatalyst

Cited by 12 publications

References 43 publications

Thermoelectric Performance of Tetrahedrite (Cu12Sb4S13) Thin Films: The Influence of the Substrate and Interlayer

Thermoelectric Performance of Tetrahedrite (Cu12Sb4S13) Thin Films: The Influence of the Substrate and Interlayer

Photocatalytic degradation of methylene blue by UV‐assistant TiO2 and natural sericite composites

Effect of Cr on Aqueous and Atmospheric Corrosion of Automotive Carbon Steel

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Product

Resources

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Thermoelectric Performance of Tetrahedrite (Cu₁₂Sb₄S₁₃) Thin Films: The Influence of the Substrate and Interlayer

Thermoelectric Performance of Tetrahedrite (Cu₁₂Sb₄S₁₃) Thin Films: The Influence of the Substrate and Interlayer

Photocatalytic degradation of methylene blue by UV‐assistant TiO₂ and natural sericite composites