A Tandem Adsorption-Catalysis Strategy for the Removal of Copper Ions and Catalytic Reduction of 4-Nitrophenol.

ABSTRACT: In this work, a consecutive adsorption-catalysis approach to remove Cu²⁺ ions and catalytic reduction of 4-nitrophenol (4-NP) is proposed. Attapulgite (ATP) nanorods are utilized as adsorbents to enrich Cu²⁺ ions from contaminated water. Subsequently, the adsorbed ions were in situ reduced to construct Cu-loaded ATP catalysts. The catalytic activities of the composite ATP-Cu catalysts are evaluated by 4-NP reduction in the presence of NaBH₄. The optimal ATP-Cu₅₀ sample prepared by putting ATP into a 50 mg L^-1 CuSO₄ solution could complete the catalytic reaction within 4 min. Moreover, the Cu-deposited ATP nanorods can be integrated into a continuous flow catalytic system, and the 4-NP can be rapidly reduced. This meth

SUBMITTER: Chen M 

PROVIDER: S-EPMC7496003 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature