Synthesis and characterization of silver molybdate nanowires, nanorods and multipods

Abstract

Silver molybdate nanowires, nanorods and multipods like structures have been prepared by an organic free hydrothermal process using ammonium molybdate and silver nitrate solutions. The powder X-ray diffraction (PXRD) patterns reveal that the silver molybdate belongs to anorthic structure. The thickness, 200-500 nm, for silver molybdate nanorods/wires and 2-5 µm for microrods are identified from SEM images. UV-visible spectrum of silver molybdate nanorods/nanowires shows maximum absorbance at 408 nm. Photoluminescence (PL) spectrum exhibits UV emission at 335 nm, violet emission at 408 nm and a weak green emission at 540 nm. The influence of hydrothermal synthesis conditions on silver molybdate nanowires, nanorods and multipods compositions were established.

Phonon properties of β-Ag2MoO4: Raman spectroscopy and ab initio calculations

“…Molybdate compounds are important materials for a range of technological applications due to their chemical stability [1,2], which make them suitable to be used in electrochemical devices [3], microwave-based devices [4], optical fibers [5], light emitters [6,7], scintillators [8], sensors [9], and catalysts [10]. In particular, the silver molybdate compound (Ag2MoO4) belongs to the class of molybdates and tungstates with A2 + B 6+ O4 formula, where A is univalent metal and B is molybdenum or tungsten.…”

“…The silver molybdates can be obtained by different methods of synthesis [12][13][14][15][16][17][18][19][20][21][22][23][24][25] in various morphologies [26,15,27,28,7,29,20,30], which make this compound the subject of several investigations, including the study of structural transitions by means of differential thermal analysis (DTA) [2], X-ray diffraction (XRD) [27,6], Raman spectroscopy [1,27,6,31], surfaceenhanced Raman spectroscopy [27,28] and absorption and emission spectroscopy [6,28,32,7]. However, the room temperature structure of the Ag2MoO4 crystal exists in two different forms namely as α-Ag2MoO4 (tetragonal) and β-Ag2MoO4 (cubic) [33].…”

A Combined Experimental and Theoretical Study on the Formation of Ag Filaments on β‐Ag2MoO4Induced by Electron Irradiation

“…Several studies have been made to obtain Ag 2 MoO 4 ‐ based materials as flower‐like, nanoparticles and wire‐like nanostructures . Low‐dimensional Ag 2 MoO 4 nanostructures have been obtained by Nagaraju et al who reported the synthesis of nanorods/nanowires/multipods and the photoluminescence of microrods; while Feng et al have been synthesized as ultra long orthorhombic silver trimolybdate nanowires. Qian et al have reported the microwave‐assisted hydrothermal synthesis of cube‐like AgAg 2 MoO 4 with visible‐light photocatalytic activity.…”

Multifunctional pure and Eu3+ doped β-Ag2MoO4: photoluminescence, energy transfer dynamics and defect induced properties

“…where I(t) is intensity, τ 1 , τ 2 and τ 3 Highly sharp and intense lines in the region 300-550 nm are attributed to intraconfigurational f-f transition of Eu 3+ . Within these transitions, the ( 7 F 0 → 5 L 6 ) at 395 nm and ( 7 F 0 → 5 D 2 ) at 465 nm are the most intense ones and the less intense peaks were observed at 361 nm ( 7 F 0 → 5 D 4 ), 380 nm ( 7 F 0 → 5 G 2 , 5 G 3 ), 414 nm ( 7 F 0 → 5 D 3 ), and 533 nm ( 7 F 0 → 5 D 1 ).…”