Optical and electrical properties of the yavapaiite-like molybdate NaAl(MoO4)2

Jendoubi, Imen; Smaïl, Ridha Ben; Mączka, M.; Zid, Mohamed Faouzi

doi:10.1007/s11581-018-2490-x

Cited by 17 publications

(3 citation statements)

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“…For isostructural 1 and 4, the similar spectral features in the range 3210-1000 cm −1 are associated with the ligand 1,2-dap, common to the two hybrids [14]. Compound 3 exhibited spectral features in the range 350-520 cm −1 associated with the bending modes and 700-900 cm −1 due to the stretching modes of MoO 4 2− tetrahedra [14,16,17]; bands in the range 2000-2200 cm −1 and the broad bands in the range 3000-2200 cm −1 may be partly due to vibrations of -NH 3 + groups. Overall, the above results indicate that the organic component (1,2-dae, 1,2-dap, 1,3-dap) may play a structuredirecting role, since polymeric hybrids were obtained using 1,2-dae and 1,2-dap (1, 2 and 4), whereas 1,3-dap led to the ionic mononuclear compound 3.…”

Section: Complementary Characterizationmentioning

confidence: 85%

“…Found: C, 17.90%; N, 12.23%; H, 5.04%. Selected FT-IR ATR bands (cm −1 ) with assignments based on comparisons to literature data for different compounds: [14,16,17] a broad band between 3000 and 2200 cm −1 may include ʋ(CH 2 ) and vibrations of -NH 3 + groups, 2129shvw, 1618w, 1521m, 1475vw (δ(CH 2 ) scissor), 1454vw (δ(CH 2 ) scissor), 1400vw (δ(CH 2 ) wag), 1327vw, 1220vw (δ(CH 2 ) twist), 1195w, 1091vw, 975vw, 971vw (ν s (MoO 4 )), 900w (ν(MoO 4 )), 808vs (ν(MoO 4 )), 750vs, 503s (δ as (MoO 4 )), 378s.…”

Section: Moo 4 (13-daph 2 )mentioning

confidence: 99%

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Simple Hybrids Based on Mo or W Oxides and Diamines: Structure Determination and Catalytic Properties

et al. 2019

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Crystalline hybrid catalysts based on molybdenum or tungsten oxide and aliphatic diamines were synthesized via simple, ecofriendly reproducible methodologies, starting from commercially available and relatively inexpensive organic and inorganic precursors, and using water as solvent under mild conditions. The crystal structures of the obtained fine powdered solids were solved ab initio from powder X-ray diffraction data. The type of organic component (1,2-diaminoethane, 1,2-diaminopropane, 1,3-diaminopropane) may play a structure-directing role. On the other hand, different metals (M = Mo, W) may lead to isostructural one-dimensional hybrids of the type MO 3 (L) with the same bidentate diamine ligand L. The prepared catalysts were investigated for the liquid phase oxidation of saturated and unsaturated hydrocarbons (cis-cyclooctene, cyclooctane), using different types of oxidants (O 2 , H 2 O 2 , tert-butyl hydroperoxide). Differences in catalytic performances associated with distinct structural features were investigated. Graphic AbstractKeywords Hydrocarbons oxidation and epoxidation · Hybrid materials · Crystal structure determination · X-ray powder diffraction Electronic supplementary material The online version of this article (https ://doi.Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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Section: Complementary Characterizationmentioning

confidence: 85%

Section: Moo 4 (13-daph 2 )mentioning

confidence: 99%

Simple Hybrids Based on Mo or W Oxides and Diamines: Structure Determination and Catalytic Properties

et al. 2019

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“…7 Researchers search for efficient anticorrosion additives to improve the mechanical, thermal, physicochemical and corrosion resistance of coatings because coatings with only physical protection can hardly provide long-term protection for metals in harsh corrosive environments. The widespread application of nanomaterials in the field of coatings is gradually becoming one of the research hotspots in the protection field, and various nanofillers such as graphene, 8 titanium dioxide, 9 boron nitride nanoparticles, 10 molybdate nanoparticles, 11 polyaniline 12 (PANI) and various other conductive polymers are increasingly used in metal corrosion protection coatings. PANI is a novel form of metal corrosion protection substance that has no environmentally negative effects compared to existing corrosion inhibitors and is a green corrosion inhibitor in line with technological advancements.…”

Section: Introductionmentioning

confidence: 99%

Preparation and anticorrosion performance of nano polyaniline/polyurethane interpenetrating network composite coating

Xu,

Yu,

Fang

et al. 2023

Polymer International

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PANI‐DBSA particles were synthesized through in‐situ lotion polymerization of aniline (AN) and dodecylbenzene sulfonic acid (DBSA) as raw materials, which followed by combining with epoxy resin (E‐44) and castor oil (CO) to prepare a polyaniline mixture (PANI‐DBSA/CO), which was used as nano filler to create nano polyaniline/polyurethane interpenetrating polymer network(IPN) coating. SEM, XRD, and FTIR were used to characterize the PANI‐DBSA and PANI‐PU interpenetrating network composite coatings that were produced. The coating's physical and mechanical characteristics were investigated, as well as the system's corrosion behavior in 3.5wt% NaCl solution, utilizing electrochemical impedance spectroscopy (EIS) and electrokinetic polarization. Acid, alkali, and salt water immersion investigations were used to further evaluate the coating's medium resistance. The results show that when PANI‐DBSA is added at 1wt%, the contact angle reaches 102.6°, the adhesion reaches S1 grade after 720h immersion, the tensile strength is 16.22MPa and the elongation reaches 208%. The impedance value of the composite coating grew by 569 times with the addition of 1wt% polyaniline, and the resistance duration of 10wt% H2SO4, 10wt% NaOH, and 3.5wt% NaCl reached more than 90 days. The addition of polyaniline to IPN coatings can increase corrosion resistance and extend their application range.This article is protected by copyright. All rights reserved.

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