Search

• A novel Pb(II) coordination polymer [Pb(FDPTH)(phen)] (1 ; FDPTH =4,4′ hexafluoroisoprorylidene-diphthalhydrazidate, phen = 1,10-phenanthroline) with 3D network structure was obtained. • The FDPTH ligands derived from the hydrothermal in situ acylation reactions. • Compound 1 is a potential visible light catalyst. • The mechanism of photocatalytic reaction was deeply studied. A new coordination polymer photocatalyst, [Pb(FDPTH)(phen)] (1 ; FDPTH 4,4′ hexafluoroisoprorylidene-diphthalhydrazidate, phen = 1,10-phenanthroline) was synthesized for the frist time. The FDPTH ligand was obtained by the in situ acylation reactions between 4,4′-(hexafluoroisopropylidene)diphthalic anhydride (6-FDCA) and N 2 H 4 ·H 2 O for the first time. X-ray single-crystal diffraction analysis showed that FDPTH ligands have a μ 4 -bridging mode in compound 1 , which linking Pb(II) centers to create a 3D network structure. Hirshfeld surface analysis was used to investigate the crystal packing and interactions of compound 1. The catalytic activity of compound 1 for methylene blue (MB) was tested under visible light. The degradation for MB followed a pseudo-first-order kinetic pattern and remained efficient after repeated experimental runs. The active species in catalytic process were discovered by radical trapping experiments. The band gap of compound 1 was determined via UV-vis absorbance spectra and Mott-Schottky plot, and a photocatalytic mechanism was proposed for the degradation process. [Display omitted] A new coordination polymer photocatalyst, [Pb(FDPTH)(phen)] (1 ; FDPTH =4,4′ hexafluoroisoprorylidene-diphthalhydrazidate, phen = 1,10-phenanthroline) was synthesized for the frist time. The FDPTH ligand was obtained by the in situ acylation reactions between 4,4′-(hexafluoroisopropylidene)diphthalic anhydride (6-FDCA) and N 2 H 4 ·H 2 O for the first time. X-ray single-crystal diffraction analysis showed that FDPTH ligands have a μ 4 -bridging mode in compound 1 , which linking Pb(II) centers to create a 3D network structure. Hirshfeld surface analysis was used to investigate the crystal packing and interactions of compound 1. The catalytic activity of compound 1 for methylene blue (MB) was tested under visible light. The degradation for MB followed a pseudo-first-order kinetic pattern and remained efficient after repeated experimental runs. The active species in catalytic process were discovered by radical trapping experiments. The band gap of compound 1 was determined via UV-vis absorbance spectra and Mott-Schottky plot, and a photocatalytic mechanism was proposed for the degradation process. [ABSTRACT FROM AUTHOR]

Graphdiyne (g−CnH2n‐2), a novel two‐dimension carbon allotrope material composed of a sp‐ and sp2‐hybrid carbon network, has been widely explored since it was synthesized for the first time by Li's group in 2010. A series distinct and excellent properties bestow graphdiyne excellent performance in many fields. Here, an innovative progress for preparing graphdiyne by using Cu+ contained material as catalyst is reported and the composite CuI‐GD is coupled with flower‐like NiAl‐LDH to produce H2 from photocatalytic water splitting. The results of FTIR and Raman spectroscopy together reveal that graphdiyne nanosheets are synthesized successfully by employing a cross‐coupling method. Photocatalytic hydrogen evolution performance shows that the hydrogen production activity of CuI‐GD/NiAl‐LDH has a 15‐ and 216‐fold enhancement compared with CuI‐GD and NiAl‐LDH, respectively. A series of characterizations are carried out to expound the underlying reasons in the enhancement of the photocatalytic hydrogen production performance of CuI‐GD/NiAl‐LDH. Meanwhile, a possible mechanism for the photocatalytic hydrogen evolution process was proposed to understand the interaction among these materials. [ABSTRACT FROM AUTHOR]

• A novel coordination polymer photocatalyst [Zn(FDPTH)(bpy)] 1 (FDPTH = 4,4′-hexafluoroisoprorylidene-diphthalhydrazidate, bpy = 2,2′-bipyridine) with 2D supramolecular layer was obtained. • FDPTH ligands derived from the hydrothermal in situ acylation reactions. • Compound 1 is a potential visible light catalyst. • The mechanism of photocatalytic reaction is studied deeply. Under the hydrothermal conditions, a novel visible-light-driven coordination polymer photocatalyst [Zn(FDPTH)(bpy)] 1 (FDPTH = 4,4′-hexafluoroisoprorylidene-diphthalhydrazidate, bpy = 2,2′-bipyridine) was luckily obtained for the first time. Note that FDPTH derived from the hydrothermal in situ acylation reactions between 4,4′-(hexafluoroisopropylidene)diphthalic anhydride (6-FDCA) and N 2 H 4 ⋅H 2 O. X-ray single-crystal diffraction analysis revealed that the FDPTH ligands exhibit a μ 3 -bridging mode in compound 1 , which link Zn(II) centers into a 1D chained structure with auxiliary ligand. The crystal packing of the synthesized compound was further analyzed using Hirshfeld surface analysis (HSA) to assess the interactions between the crystal packings. The photocatalysis analysis indicates that compound 1 is a potential visible-light-driven photocatalyst. The degradation follows a pseudo-first-order kinetic character and the efficiency has been well preserved after five continuous experimental runs. Trapping radical experiment turned out that the ·OH are active species in the catalytic reaction. The band position of compound 1 was elucidated via UV–vis absorbance spectra and Mott-Schottky plot. Also, the photocatalytic degradation mechanism has been proposed. [Display omitted] [ABSTRACT FROM AUTHOR]