New photocatalysts based on mixed-metal pyridine dicarboxylates

Abstract

New photocatalytically active isostructural two-dimensional mixed metal-pyridine dicarboxylates, [M(H 2 O) 3 Co{C 5 N 1 H 3 (COO) 2 } 3 ]) ¥ ], M = Gd (1), Dy (2) and Y (3) have been prepared under hydrothermal conditions. The structure consists of a network of MO 6 (H 2 O) 3 , CoO 3 N 3 polyhedral units connected by the pyridine dicarboxylates forming two-dimensional layers, which are arranged in an AAAA... fashion. The photocatalytic studies on 1 -3 indicate that they are active catalysts for the degradation of simple organic dyes, such as Remazol brilliant blue R (RBBR) and Orange G (OG) in the presence of UV light. The compounds have also been characterized by powder XRD, IR, TGA, UV-Vis and magnetic studies.

New photocatalysts based on MIL-53 metal–organic frameworks for the decolorization of methylene blue dye

“…In addition, MOFs behave as semiconductors when exposed to light, thus making MOFs potentially be photocatalysts [11]. More recently, MOFs that can act as photocatalysts have attracted much attention for exploiting new applications of MOFs [12][13][14][15][16][17][18]. Garcia et al firstly proposed MOF-5 to be an active photocatalyst for photodegradation of phenol.…”

Structures and photocatalytic activities of metal-organic frameworks derived from rigid aromatic dicarboxylate acids and flexible imidazole-based linkers

“…Nowadays, much effort has also been devoted to developing new photocatalytic materials based on metal-organic frameworks, which is motivated largely by a demand for solving pollution problems in view of their potential applications in the green degradation of organic pollutants [16][17][18][19][20][21][22][23].…”

Photocatalytic degradation of Orange G on nitrogen-doped TiO2 catalysts under visible light and sunlight irradiation

“…Photocatalytic degradation of Orange G (OG) has been reported in several studies [29][30][31][32], and many investigations focused widely on the UV-illuminated TiO 2 processes [33][34][35][36][37][38][39]. Nagaveni et al [40] conducted the degradation of OG using combustion-synthesized nano-TiO 2 under solar light, and found that the initial degradation rates were 1.6 times higher than that using Degussa P25 TiO 2 .…”