Facile synthesis of MoO₂/CaSO₄ composites as highly efficient adsorbents for congo red and rhodamine B.

ABSTRACT: A novel rod-shaped MoO₂/CaSO₄ composite was prepared by using hexa-ammonium molybdate and flue gas desulfurization gypsum via a simple mixed-solvothermal route. In this composite, CaSO₄ matrices are decorated with MoO₂ nanoparticles, and non-structural mesopores are formed via particle packing. Moreover, it displays an excellent adsorption capability towards anionic congo red (CR) and cationic rhodamine B (RhB). The adsorption quantities per unit mass and removal efficiencies of the two dyes are significantly influenced by adsorbent dose, solution pH, and temperature. The adsorption isotherm data can be best fitted by the Langmuir model, and the calculated maximum adsorption quantities at 303.5 K are 853.54 mg g^-1 for CR

SUBMITTER: Jia XJ 

PROVIDER: S-EPMC9077254 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature