About Fluorides

Fluoride IonThe fluoride ion is the anion of fluorine, F-, and fluorides are compounds which contain this anion. Metallic mono-, di, and trifluorides usually exhibit ionic bonding, pentafluorides and higher exhibit covalent bonding, and tetrafluorides contain bonds with intermediate properties. Ionic-bonded fluorides may be soluble or insoluble: alkali fluorides are soluble, alkali earth metals form insoluble fluorides, transition metal difluorides are often soluble, and trifluorides are insoluble. An exception to some of these trends is beryllium difluoride, which features bonds with partially covalent character and the crystalline structure of a covalently bonded network solid, yet is soluble in water.

Covalently metal-bonded fluorides are typically either gases or volatile liquids or solids, and act chemically as oxidants and fluoridating agents. Tungsten hexafluoride is used routinely to deposit tungsten using chemical vapor deposition methods in semiconductor device fabrication. Uranium hexafluoride is of vital importance to the enrichment processed used to produce nuclear reactor fuels and material for nuclear weapons. Non-metal fluorides also exist, and all are volatile compounds, but their chemical properties vary widely. A number of important superacids contain fluorine, and are typically produced by mixing hydrogen fluoride, itself a highly reactive acid, with a metal fluoride.

Recent Research & Development for Fluorides

Facile synthesis of poly o-toluidine modified lanthanum phosphate nanocomposite as a superior adsorbent for selective fluoride removal: A mechanistic and kinetic study., Sahu, Sumanta, Mallik Laxmi, Pahi Souman, Barik Bapun, Sahu Uttam Kumar, Sillanpaa Mika, and Patel Raj Kishore , Chemosphere, 2020 Mar 19, Volume 252, p.126551, (2020)

Surface modification of luminescent Ln(III) fluoride core-shell nanoparticles with acetyl salicylic acid (aspirin) - synthesis, spectroscopic and in vitro hemocompatibility studies., Kwiatek, Dorota, Mrówczyńska Lucyna Mrówczyns, Stopikowska Natalia, Runowski Marcin, Lesicki Andrzej, and Lis Stefan , ChemMedChem, 2020 Jun 08, (2020)

Interface-Dominated Time-Dependent Behavior of Poled Poly(Vinylidene Fluoride-Trifluoroethylene)/Barium Titanate Composites., Vacche, Sara Dalle, Damjanovic Dragan, Michaud Véronique, and Leterrier Yves , Materials (Basel), 2020 Jan 04, Volume 13, Issue 1, (2020)

Sodium fluoride exposure triggered the formation of neutrophil extracellular traps., Wang, Jing-Jing, Wei Zheng-Kai, Han Zhen, Liu Zi-Yi, Zhang Yong, Zhu Xing-Yi, Li Xiao-Wen, Wang Kai, and Yang Zheng-Tao , Environ Pollut, 2020 Feb, Volume 257, p.113583, (2020)

Optimization and validation of a derivatization method with boron trifluoride in ethanol for analysis of aromatic carboxylic acids in water., Kristensen, Mette, Christensen Peter, and Christensen Jan H. , J Chromatogr A, 2019 Sep 13, Volume 1601, p.21-26, (2019)

Fluoride removal from water by composite Al/Fe/Si/Mg pre-polymerized coagulants: Characterization and application., Tolkou, Athanasia K., Mitrakas Manassis, Katsoyiannis Ioannis A., Ernst Mathias, and Zouboulis Anastasios I. , Chemosphere, 2019 Sep, Volume 231, p.528-537, (2019)

Bidentate SO Complexes of Zirconium and Hafnium Difluorides with Highly Activated S-O Bonds., Wei, Rui, Chen Xiuting, and Gong Yu , J Phys Chem A, 2019 Nov 07, Volume 123, Issue 44, p.9567-9572, (2019)

Multiple bimetallic (Al-La or Fe-La) hydroxides embedded in cellulose/graphene hybrids for uptake of fluoride with phosphate surroundings., Guo, Yali, Xing Xu, Shang Yanan, Gao Baoyu, Zhang Lei, Yue Qinyan, Qian Li, and Wang Zihang , J Hazard Mater, 2019 Nov 05, Volume 379, p.120634, (2019)

Preparation and characterization of novel green synthesized iron-aluminum nanocomposite and studying its efficiency in fluoride removal., Mondal, Piyal, and Purkait Mihir Kumar , Chemosphere, 2019 Nov, Volume 235, p.391-402, (2019)

Preliminary investigation of aluminium fluoride complexes in aqueous solutions with CE/ESI-MS and CE/ICP-MS., Tanaka, Miho, Hoshino Yoko, and Nakamoto Daisuke , Rapid Commun Mass Spectrom, 2019 May 30, (2019)

Restraining fluoride loss from NaYF:Yb,Er upconverting nanoparticles in aqueous environments using crosslinked poly(acrylic acid)/poly(allylamine hydrochloride) multilayers., Palo, Emilia, Salomäki Mikko, and Lastusaari Mika , J Colloid Interface Sci, 2019 Mar 07, Volume 538, p.320-326, (2019)

Preparation of -Phase Poly(vinylidene fluoride) Films on Aluminum Substrate with the Addition of Hydrated Metal Salts., Hwangbo, Seung, Kang Jong-Min, Min Woo-Min, Lee Jun-Ho, and Hwang Kyu-Seog , J Nanosci Nanotechnol, 2019 Mar 01, Volume 19, Issue 3, p.1824-1828, (2019)

Coagulation removal of fluoride by zirconium tetrachloride: Performance evaluation and mechanism analysis., Gan, Yonghai, Wang Xiaomeng, Zhang Li, Wu Bingdang, Zhang Guoyang, and Zhang Shujuan , Chemosphere, 2019 Mar, Volume 218, p.860-868, (2019)

Enhanced capacity of fluoride scavenging from contaminated water by nano-architectural reorientation of cerium-incorporated hydrous iron oxide with graphene oxide., Mukhopadhyay, Kankan, Ghosh Uday Chand, and Sasikumar Palani , Environ Sci Pollut Res Int, 2019 Jul 06, (2019)