Photocathodic protection of 304 stainless steel by MnS/TiO2 nanotube films under simulated solar light

Ge, Shengsong; Zhang, Qiao-Xia; Wang, Xiutong; Li, Hong; Zhang, Liang; Wei, Qinyi

doi:10.1016/j.surfcoat.2015.10.061

Cited by 39 publications

(8 citation statements)

References 42 publications

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“…Photo-catalytic reduction of Cr(VI) ions to Cr(III) ions is more practical and cleaner compared to chemical reduction. [35] The widely reported photo-catalytic reductants are metal oxides and metal sulfides, including ZnO, [35a] TiO 2 , [36] WO 3 , [37] MnS, [38] CdS, [39] In 2 O 3 , [40] etc. The heterogeneous photocatalysis (HP), as a relatively new technique for water or air purification can work under natural sunlight.…”

Section: Photocatalytic Reductionmentioning

confidence: 99%

Progress on the Photocatalytic Reduction Removal of Chromium Contamination

Zhao

Lin

et al. 2018

The Chemical Record

230

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Rapid industrialization leads to increased wastewater discharge encompassing hexavalent chromium (Cr(VI)), which leads to serious environmental problems of toxicity and potential carcinogenicity. Removal of these species is normally carried out by ion‐exchange, precipitation, membrane filtration, sorption, photocatalytic reduction, etc. This review mainly focuses on the photocatalytic and photoelectrocatalytic (PEC) reduction of Cr (VI), because of their advantages over other methods such as reduced risk of secondary pollution by non‐reduced Cr (VI), no sludge formation, no need for a large amount of chemical reagents, clean and easy installation. The main factors influencing the photocatalytic reduction efficiency of Cr (VI) such as catalyst activity, solution pH, Cr adsorption on the catalyst and additives, are briefly discussed. Finally, a special emphasis is provided to the photoelectrocatalytic (PEC) reduction of Cr (VI).

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Section: Photocatalytic Reductionmentioning

confidence: 99%

Progress on the Photocatalytic Reduction Removal of Chromium Contamination

Zhao

Lin

et al. 2018

The Chemical Record

230

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“…This effect may be attributed to the cathodic polarization of 304SS which results from the excited photoelectrons transfer from TiO 2 nanotubes to 304SS [36, 37]. After the light was off, the OCP of 304SS coupled to pure TiO 2 returned to a value near the free corrosion potential of bare 304SS, indicating the invalid recombination of the photogenerated electrons and holes in the TiO 2 [38]. By contrast, the OCPs of 304SS coupled with Bi 2 S 3 /TiO 2 exhibited a slightly positive shift and stayed far below than the free corrosion potential of bare 304SS.…”

Section: Resultsmentioning

confidence: 99%

Photocathodic Protection of 304 Stainless Steel by Bi2S3/TiO2 Nanotube Films Under Visible Light

Wang

Wei

et al. 2017

Nanoscale Res Lett

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We report the preparation of TiO2 nanotubes coupled with a narrow bandgap semiconductor, i.e., Bi2S3, to improve the photocathodic protection property of TiO2 for metals under visible light. Bi2S3/TiO2 nanotube films were successfully synthesized using the successive ionic layer adsorption and reaction (SILAR) method. The morphology and structure of the composite films were studied by scanning electron microscopy and X-ray diffraction, respectively. UV–visible diffuse reflectance spectra were recorded to analyze the optical absorption property of the composite films. In addition, the influence of Bi2S3 deposition cycles on the photoelectrochemical and photocathodic protection properties of the composite films was also studied. Results revealed that the heterostructure comprised crystalline anatase TiO2 and orthorhombic Bi2S3 and exhibited a high visible light response. The photocurrent density of Bi2S3/TiO2 was significantly higher than that of pure TiO2 under visible light. The sensitization of Bi2S3 enhanced the separation efficiency of the photogenerated charges and photocathodic protection properties of TiO2. The Bi2S3/TiO2 nanotubes prepared by SILAR deposition with 20 cycles exhibited the optimal photogenerated cathodic protection performance on the 304 stainless steel under visible light.

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“…For instant, the 304 stainless steel was protected upon being coated by MnS/TiO 2 nanotube films under simulated solar light. [4] The 0.2ZnMn 2 O 4 /0.8ZnFe 2 O 4 nanocomposite sample revealed a good nonlinear optical behavior at low frequency. [5] The CuCoO x /BiVO 4 multifunctional catalyst was applied to the organics' degradation, water oxidation and O 2 reduction under visible light.…”

Section: Introductionmentioning

confidence: 89%

Exploration of structural, optical, and photoluminescent properties of (1 – x)NiCo₂O₄/xPbS nanocomposites for optoelectronic applications

2022

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(1-x)NiCo2O4/xPbS (0≤x≤0.2) nanocomposite samples were synthesized using the hydrothermal and thermolysis procedures. The different phases developed in the obtained nanocomposite samples were accurately determined using the x-ray diffraction technique equipped with a line-detector. The percentage of the formed phases (NiCo2O4 (NCO), PbS, PbSO4), structural and microstructure parameters were determined using Rietveld quantitative phase analysis. The transmission electron microscope (TEM) images and Rietveld analysis reveal almost isotropic particle size in the nano range with a very narrow size distribution. The obtained phase percentages of PbS and PbSO4 are smaller than nominated values (x) suggesting dissolving of some Pb and S ions in NCO which then confirmed by the analysis of Fourier-transform infrared (FTIR) spectra of nanocomposite samples. The absorption spectra are modified upon doping NCO with PbS. The optical band gaps of the nanocomposites increase as the amount of PbS is increased. The effect of alloying on extinction coefficient, refractive index, dielectric constant, optical conductivity, the intensity, and emitted color from the photoluminescence of the nanocomposite samples are also studied. The refractive index values of NCO and NCO-PbS nanocomposite samples exhibit normal dispersions. The photoluminescent measurements reveal that NCO-PbS nanocomposites could emit a violet color. The improvement in the values of the non-linear optical (NLO) parameters of pristine NCO at high frequencies or the nanocomposite samples at low frequencies, nominated them to be used in NLO photonic applications.

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Photocathodic protection of 304 stainless steel by MnS/TiO2 nanotube films under simulated solar light

Cited by 39 publications

References 42 publications

Progress on the Photocatalytic Reduction Removal of Chromium Contamination

Progress on the Photocatalytic Reduction Removal of Chromium Contamination

Photocathodic Protection of 304 Stainless Steel by Bi2S3/TiO2 Nanotube Films Under Visible Light

Exploration of structural, optical, and photoluminescent properties of (1 – x)NiCo₂O₄/xPbS nanocomposites for optoelectronic applications

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Photocathodic protection of 304 stainless steel by MnS/TiO2 nanotube films under simulated solar light

Cited by 39 publications

References 42 publications

Progress on the Photocatalytic Reduction Removal of Chromium Contamination

Progress on the Photocatalytic Reduction Removal of Chromium Contamination

Photocathodic Protection of 304 Stainless Steel by Bi2S3/TiO2 Nanotube Films Under Visible Light

Exploration of structural, optical, and photoluminescent properties of (1 – x)NiCo2O4/xPbS nanocomposites for optoelectronic applications

Contact Info

Product

Resources

About

Exploration of structural, optical, and photoluminescent properties of (1 – x)NiCo₂O₄/xPbS nanocomposites for optoelectronic applications