Facile synthesis of novel Zn3(OH)2V2O7•2H2O nanocables with excellent adsorption properties

Novel well-dispersed Zn-3(OH)(2)V2O7 center dot 2H(2)O nanocables have been synthesized by a facile DL-Alanine (DL-Ala) assisted hydrothermal route. The products were characterized by XRD, SEM, TEM, XPS and FTIR to obtain the purity and morphological information. SEM and TEM results demonstrated that a large number of cable-like nanostructures with size of 5-10 mu m and diameter with 150 nm were formed. During the process, DL-Ala was chosen as the coordinating ligand and structure-directing agent. Consequently, DL-Ala played a crucial role in formation of nanocables. The as-obtained Zn-3(OH)(2)V2O7 center dot 2H(2)O nanocables were evaluated as adsorbent for the removal of some organic dyes from aqueous solution. Resultantly, the adsorbent exhibited an effective and selective adsorption behavior. The results showed the Zn-3(OH)(2)V2O7 center dot 2H(2)O nanocables were potential adsorbent with maximum adsorption capacity of 112.7 mg/g for methylene blue (MB) at 298 K. The equilibrium and kinetics studies were investigated and confirmed that the adsorption was a physisorption process. This work revealed that the unique Zn-3(OH)(2)V2O7 center dot 2H(2)O nanocables could be used as efficient and selective adsorbent for cationic dyes. (c) 2020 Elsevier B.V. All rights reserved.

Automated summary

Well-dispersed Zn-3(OH)(2)V2O7•2H2O nanocables were successfully synthesized via a DL-Alanine assisted hydrothermal route, exhibiting efficient and selective adsorption behavior for cationic dyes with a maximum adsorption capacity of 112.7 mg/g. The adsorption process was confirmed to be physisorption based on equilibrium and kinetics studies.