Sökning: onr:"swepub:oai:DiVA.org:ltu-99547" >
Preparation of poly...
Preparation of polyoxometalate ionic liquids (POM-ILs) coated on metal coins for anticorrosion activity
-
- Majeed, Iftekhar (författare)
- Inorganic Research Laboratory, Institute of Chemical Sciences, Bahauddin Zakariya University Multan, 60800, Pakistan; Department of Chemistry, Khwaja Fareed University of Engineering and Information Technology, Raheem Yar Khan, Pakistan
-
- Ahmad, Zahoor (författare)
- Department of Chemistry, University of Engineering and Technology, Lahore, Pakistan
-
- AlMasoud, Najla (författare)
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
-
visa fler...
-
- Alomar, Taghrid S. (författare)
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
-
- Hussain, Shahid (författare)
- Luleå tekniska universitet,Energivetenskap
-
- Asif, Hafiz Muhammad (författare)
- Inorganic Research Laboratory, Institute of Chemical Sciences, Bahauddin Zakariya University Multan, 60800, Pakistan
-
- Mansoor, Farrukh (författare)
- Department of Chemistry, Khwaja Fareed University of Engineering and Information Technology, Raheem Yar Khan, Pakistan
-
- Nazar, Zahra (författare)
- Inorganic Research Laboratory, Institute of Chemical Sciences, Bahauddin Zakariya University Multan, 60800, Pakistan
-
- El-Bahy, Zeinhom M. (författare)
- Department of Chemistry, Faculty of Science, Al-Azhar University, Nasr City 11884, Cairo, Egypt
-
visa färre...
-
(creator_code:org_t)
- Elsevier Ltd, 2023
- 2023
- Engelska.
-
Ingår i: Polyhedron. - : Elsevier Ltd. - 0277-5387 .- 1873-3719. ; 243
- Relaterad länk:
-
https://urn.kb.se/re...
-
visa fler...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Corrosion is globally a serious problem for metallic structure and materials in recent decades. When there is interaction between acid and metallic structure, a large amount of corrosion produced. Herein, we have synthesized two energetic polyoxometalates (POMs) based ionic liquids by ion exchange method of smaller cations with larger cations tetraalkyl ammonium (CnH2n+1)4N+ (n = 7). FT-IR, SEM, Electrochemical Impedance Spectroscopy (EIS), Optical Imaging Microscopy(OIM), Rheological analysis, 1HNMR and TGA techniques were used to characterize the corresponding ionic liquids. Metals can easily be protected by using hydrophobic polyoxometalate-ionic liquids (POM-ILs). At room-temperature the metallic coins were coated with W17@POM-IL andV3W15@POM-IL, comprising of Dawson anions and quaternary tetraheptylammonium cations (Q7). The acid resistant V3W15@POM-IL and W17@POM-IL were used for coating of coins samples. The un-coated coins have shown corrosion with holes production when treated with HCl while POM-ionic liquid coated coins expressed excellent resistant against corrosion and obviously, no cracking was observed. TGA results of W17@POM-IL revealed minimum weight loss of 4.3% and V3W15@POM-IL has maximum weight loss (9.2%) at highest temperature (500 °C). We have analyzed from the results that coins without coating of POM-ILs have demonstrated the weight loss of 14.3% while the coins coated with V3W15@POM-IL and W17@POM-ILs expressed less weight lost with 3.7% and 1.7% respectively. Furthermore, electrochemical impedance measurement (EIS) has charge transfer ratio of 7.03 Ω, 5.23 Ω and 3.78 Ω for W17@POM-IL, V3W15@POM-IL and un-coated coins respectively. Rheological analysis with highest elastic modulus (103 Pa) and viscous modulus (103 Pa) of W17@POM-IL has given best coating properties. Hence, the POM-ILs have variety of applications as coherent, adherent, chemical stability. Comparison of V3W15@POM-IL with W17@POM-IL inferring us that later is best for protection of metal coins against corrosion and damage production with highest thermal stability.
Ämnesord
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
Nyckelord
- Corrosion
- Ionic liquids
- Metal Coins
- Polyoxometalates
- Q7(Tetraheptylammonium cation)
- Rheology
- Energiteknik
- Energy Engineering
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas