Synthesis and characterization of zirconium titanium phosphate and its application in separation of metal ions

Synthesis, Characterization And Crystallographic Features Of Zirconium Molybdo-Pyrophosphate As A Composite Material

“…In Fig. (4) a band in the region 1050 cm -1 may be due to the presence of P-O stretching [13]. In Fig.6we found that broad and sharp peak in the range 3600-2600 and ~1600 cm -1 , which assigned to free and interstitial water molecules.The peaks at 880 and 740 cm -1 due to Zr-O bond.…”

Formation of hexagonal-molybdenum trioxide (h-MoO3) nanostructures and their pseudocapacitive behavior

“…50 It is believed that the compounds with a smaller amount of water molecules (<2 H 2 O) conduct protons by Vehicle mechanism. 51 Here, we considered that the charge-storage mechanism in h-MoO 3 does not rely on the Grotthuss mechanism of proton transportation due to the open-structure of h-MoO 3 , a small amount of water molecules and the availability of proton carriers (NH 4 + and H 2 O).…”

Adsorption of chromium(III), mercury(II) and lead(II) ions onto 4-aminoantipyrine immobilized bentonite

“…The tolerance limit was set as the amount of ions causing recoveries of the examined elements to be less than 90%. As shown in Table 3, in excess of 2000 g mL −1 of K + and Na + , 500 g mL −1 of Ca 2+ , Mg 2+ , PO 4 3− and SO 4 2− , 50 g mL −1 of Ni 2+ , Cd 2+ , Zn 2+ , Mn 2+ , Co 2+ , Cu 2+ and Fe 3+ did not interfere with the separation and determination of Cr(III), Hg(II) and Pb(II). The possible factor for this reason is the 4-aminoantipyrine functionalized group inherent selectivity.…”

“…These include: graphite furnace atomic absorption spectrometric (GFAAS) [2], X-ray fluorescence spectrometry (XRF) [3], inductively coupled plasma atomic emission spectrometry (ICP-AES) [4] and inductively coupled plasma mass spectrometry (ICP-MS) [5]. However, GFAAS is difficult to determine multi-elements simultaneously, while the sensitivity of XRF is lower than that of ICP-AES.…”