Synergistic Photocatalytic-Adsorption Removal of Basic Magenta Effect of AgZnO/Polyoxometalates Nanocomposites

• Published in: Nanoscale research letters Vol. 16; no. 1; pp. 163 - 12
• Main Authors: Tian, Heyun, Luo, Jie, Zhang, Ke, Ma, Chenguang, Qi, Yiyi, Zhan, Shixia, Liu, Xiao, Li, Mingxue, Liu, Hongling
• Format: Journal Article
• Language: English
• Published: New York Springer US 10.11.2021; Springer Nature B.V; SpringerOpen
• Subjects: Adsorbents; Adsorption; AgZnO/polyoxometalates; Aqueous solutions; Basic magenta removal; Chemistry and Materials Science; Dyes; Industrial wastewater; Materials Science; Molecular Medicine; Nano Express; Nanochemistry; Nanocomposites; Nanoparticles; Nanoscale Science and Technology; Nanostructure; Nanotechnology; Nanotechnology and Microengineering; Optical properties; Particle size distribution; Photocatalysis; Photocatalytic; Photoelectron spectroscopy; Photoelectrons; Photoluminescence; Photons; Polyoxometallates; Size distribution; Sonochemical reactions; Spectrum analysis; Transmission electron microscopy; Ultraviolet spectra; Wastewater; X ray photoelectron spectroscopy; X ray powder diffraction; Photocatalytic; Nanocomposites; Adsorption; Basic magenta removal; AgZnO/polyoxometalates
• ISSN: 1556-276X; 1931-7573; 1556-276X
• DOI: 10.1186/s11671-021-03620-0

The bifunctional photocatalytic-adsorbent AgZnO/polyoxometalates (AgZnO/POMs) nanocomposites were synthesized by combining AgZnO hybrid nanoparticles and polyoxometalates [Cu(L) 2 (H 2 O)]H 2 [Cu(L) 2 (P 2 Mo 5 O 23 )]⋅4H 2 O (HL = C 6 H 6 N 2 O) into nanostructures via a sonochemical method. Transmission electron microscopy (TEM) indicated that AgZnO/POMs nanocomposites were uniform with narrow particle size distribution and without agglomeration. X-ray powder diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analysis confirmed the nanostructure and composition of AgZnO/POMs nanocomposites. The ultraviolet–visible spectra (UV–Vis) and photoluminescence spectra (PL) confirmed excellent optical properties of the AgZnO/POMs nanocomposites. 94.13% ± 0.61 of basic magenta (BM) in aqueous solution could be removed using the AgZnO/POMs nanocomposites through adsorption and photocatalysis. The kinetic analysis showed that both the adsorption and photocatalysis process conform to pseudo-second-order kinetics. In addition, the removal rate of AgZnO/POMs nanocomposites was found to be almost unchanged after 5 cycles of use. The bifunctional photocatalytic-adsorbent AgZnO/POMs nanocomposites with high stability and cycling performance have broad application prospects in the treatment of refractory organic dye wastewater containing triphenylmethane.