Facile synthesis of a Ag(i)-doped coordination polymer with enhanced catalytic performance in the photodegradation of azo dyes in water

Abstract

Ambient temperature solid state reaction of a preformed compound {[Pb(Tab) 2 ] 2 (PF 6 ) 4 } n (1) (TabH = 4-(trimethylammonio)benzenethiol) with two equiv. of 1,2-bis(4-pyridyl)ethylene (bpe) quantitatively produces one unique two-dimensional coordination polymer {[Pb(Tab) 2 (bpe)] 2 (PF 6 ) 4 } n (2). The Ag(I)-doped coordination polymer {[Pb(Tab) 2 (bpe)] 2 (PF 6 ) 4 ·1.64AgNO 3 } n (2a) is readily prepared by immersing 10 2 into AgNO 3 aqueous solution. Compared with its two precursors 1 and 2, 2a exhibits greatly enhanced catalytic activity towards the photodegradation of a family of 12 azo dyes within a short period of time under UV light irradiation and excellent adaptability on the elimination of azo dyes in water. It is anticipated that the 'Ag(I)-doping' synthetic strategy reported in this work may be applicable to other coordination polymer systems containing thiolate ligands for the preparation of various metal ion-doped 15 multidimensional coordination polymers with new topological structures and better catalytic performances in photodecomposing azo dyes in industrial wastewater.

Surfactant‐Assisted Nanocrystalline Zinc Coordination Polymers: Controlled Particle Sizes and Synergistic Effects in Catalysis

“…Additionally, it is desired to tune the morphologies and particle sizes of CPs for their unique size‐dependent properties. For example, bulk‐phase CPs are realistically expected to be engineered for a number of bulk‐scale applications, including gas storage and nonlinear optics . In contrast, CPs need to be scaled down to the nanoregime to form nanoscale CPs for use as heterogeneous catalysts because they not only maintain structural diversity and physicochemical properties of bulk‐phase CPs, but also exhibit particle dimensions in the tens to hundreds of nanometers range, which endows them with higher catalytic efficiency …”

“…[18][19][20][21][22] Additionally,itisdesired to tunethe morphologies and particles izes of CPs for their unique size-dependentp rop-erties.F or example, bulk-phase CPs are realistically expected to be engineeredf or an umber of bulk-scale applications,i ncluding gas storagea nd nonlinear optics. [23][24][25][26][27] In contrast, CPs need to be scaled down to the nanoregime to form nanoscale CPs for use as heterogeneous catalysts because they not only maintain structural diversity and physicochemical properties of bulk-phaseC Ps, but also exhibit particle dimensions in the tens to hundreds of nanometers range, which endows them with higher catalytic efficiency. [28,29] Due to their well-defined crystallinen ature, another very valuable feature of CPs is that they can provide atomistically welldefined isolated active catalytic sites with uniformly fixed azimuth values andd istances throughout the solid to mimic the site isolationo fm any catalytic enzymea ssemblies in nature.…”

Photocatalytic Decontamination of Wastewater Containing Organic Dyes by Metal–Organic Frameworks and their Derivatives

“…[36b]; tpcb = tetrakis(4-pyridyl)cyclobutane; [44] pz = pyrazine; [45] L = 3,4-bi(4-carboxyphenyl)-benzoic acid, bipy = 4,4'-bipyridine; [46] btec = 1,2,4,5-benzenetetracarboxylate, bptc = 3,3',4,4'-benzophenone tetracarboxylic acid; [47,60] [58];L = 3-pyridylnicotinamide, ADTZ = 2,5-(s-acetic acid)dimercapto-1,3,4-thiadiazole; [48,49] en = ethylenediamine, AT = 5,5-azotetrazolate; [50] PTZ = 2-pyridyltetrazolato; [51] tptc = terphenyl-3,3',5,5'-tetracarboxylic acid, bidb = 1,4-bis(1-imidazol-yl)-2,5-dimethyl benzene; [53] 4-bpt = 3,5-bis-(4-pyridyl)-1,2,4-triazole; [25] tipm = tetrakis[4-(1-imidazolyl)phenyl]methane; [55] bpp = 1,3-bis(4-pyridyl)propane; [56,93,100] bdoa = benzene-1,4-dioxyacetica cid, ttbt = 10,11,12,13-tetrahydro-4,5,9,14-tetraaza-benzo[b]triphenylene; [57] bpy = 2,2'-bipyridine,p ytz = 4-(1 H-tetrazol-5-yl)pyridine; [37b, 59] phen = 1,10-phenanthroline; [60,72] cpb = 1,3-(3',4'-carboxylphenoxy)benzene; [61] Ta bH = 4-(trimethylammonio)benzenethiol, bpe = 1,2-bis(4-pyridyl)-ethylene; [62] L = bis-(3,5-dicarboxyphenyl)terephthalamide; [63,73,80] L 2 = N,N'-bis(3-pyridinecarboxamide)-1,3-propane; [65] L = N,N'-bis(pyridine-3-yl)-5-methylisophthalic dicarboxamide, tpd = 2,5-thiophenedicarboxylic acid, mip = 5-methylisophthalic acid, hip = 5-hydroxyisophthalica cid; [66] atrz = 4-amino-1,2,4-triazole; [67] pzca = 2-pyrazine carboxylic acid; [68] TATAB* = 4,4'-[ 6-(dimethylamino)-1,3,5-triazine-2,4-diyl]bis(azanediyl)dibenzoica cid; [69] bmib = 1,3-bis(2-methylimidazol-1-ylmethyl)benzene;…”

“…64 AgNO 3 ] n (Tab = 4-(trimethylammonio)benzenethiol, bpe = 1,2-bis(4-pyridyl)ethylene), which is prepared by an ambient-temperature solid-state reaction. [62] The photodegradation efficiency of MO, OIV,a nd OG are about 95 %, 85 %, and 95 %u nder irradiation for5 0, 60, and 40 min, respectively.I na ddition, severalo ther dyes, AO7, OI, CR, AR27, SY,A B10B, AB,A CBK, and EBT are almost completely degraded after illumination for 30, 30, 3, 50, 40, 12, 20, 40, 15 min, respectively.S uch photocatalytic performances are better than [(Pb(Tab) 2 ) 2 (PF 6 ) 4 ] n and [(Pb(Tab) 2 (bpe)) 2 (PF 6 ) 4 ] n , which indicates the excellent adaptability of the Ag I -doped coordination polymer for the elimination of variousa zo dyes in water.A dditionally,[ (Pb(Tab) 2 (bpe)) 2 (PF 6 ) 4 ·1. 64 AgNO 3 ] n can be reused more than fivet imes without evident photocatalytic efficiencyd ecay of CR and AB10B.…”

Copper(I) and Silver(I) Coordination Polymers Based on Rigid Bis(triazole) Ligand: Syntheses, Structures, and Catalytic Properties

“…No significant change in the degradation of MO was observed in the absence of the complex catalyst under the control experiment, which indicating that H 2 O 2 alone is unable to degrade the methyl orange dye. Comparing with previously reported other MOCPs, the degradation efficiency of complex 2 is slightly higher 42–44. The catalytic performance and stability of catalysts is important to evaluate their applicability.…”