Polyoxomolybdate [Mo_(36)O_(110)(NO)_4(H_2 O)_(14)]·52 H_2 O was synthesized by a simple one-pot procedure through reducing an acidified mixture of Na_2 MoO_4·2 H_2 O and NH_2 OH·HCl. In order to create...Polyoxomolybdate [Mo_(36)O_(110)(NO)_4(H_2 O)_(14)]·52 H_2 O was synthesized by a simple one-pot procedure through reducing an acidified mixture of Na_2 MoO_4·2 H_2 O and NH_2 OH·HCl. In order to create a heterogeneous catalyst system, the polyoxomolybdate was pillared with MgAl-LDH-NO_3 by direct ion exchange. These novel materials were carefully analyzed by various chemico-physical methods. The catalytic degradation of methylene blue(MB) and rhodamine B(RB) as common dyes in the presence of MgAl-LDH-1 nanoparticles with aqueous hydrogen peroxide, H_2 O_2, as an oxidizing agent was studied in aqueous solution at room temperature. More importantly, the catalyst can be recovered and reused efficiently up to five consecutive cycles with negligible loss of catalytic activity.展开更多
基金Supported by the Iranian National Science Foundation(INSF)and University of Maragheh
文摘Polyoxomolybdate [Mo_(36)O_(110)(NO)_4(H_2 O)_(14)]·52 H_2 O was synthesized by a simple one-pot procedure through reducing an acidified mixture of Na_2 MoO_4·2 H_2 O and NH_2 OH·HCl. In order to create a heterogeneous catalyst system, the polyoxomolybdate was pillared with MgAl-LDH-NO_3 by direct ion exchange. These novel materials were carefully analyzed by various chemico-physical methods. The catalytic degradation of methylene blue(MB) and rhodamine B(RB) as common dyes in the presence of MgAl-LDH-1 nanoparticles with aqueous hydrogen peroxide, H_2 O_2, as an oxidizing agent was studied in aqueous solution at room temperature. More importantly, the catalyst can be recovered and reused efficiently up to five consecutive cycles with negligible loss of catalytic activity.
