Decomposition of micropollutants
using an electrocatalytic membrane reactor is a promising alternative
to traditional advanced oxidation processes due to its high efficiency
and environmental compatibility. Rational interface design of electrocatalysts
in the membrane electrode is critical to the performance of the reactor.
We herein developed a three-dimensional porous membrane electrode
via in situ growth of one-dimensional RuO2/TiO2 heterojunction nanorods on a carbon nanofiber membrane by a facile
hydrothermal and subsequent thermal treatment approach. The membrane
electrode was used as the anode in a gravity-driven electrocatalytic
membrane reactor, exhibiting a high degradation efficiency of over
98% toward bisphenol-A and sulfadiazine. The superior electrocatalytic
performance was attributed to the 1D RuO2/TiO2 heterointerfacial structure, which provided the fast electron transfer,
high generation rate of the hydroxyl radical, and large effective
surface area. Our work paves a novel way for the fundamental understanding
and designing of novel highly effective and low-consumptive electrocatalytic
membranes for wastewater treatment.
A special multifunctional ionic liquid compound (1-methyl-3-(2-(thiocarboxyoxy)-ethyl)-2H-imidazole-1,3-diium bromide (SHIL)) is used as the chemical bridge to link lanthanide beta-diketonates and polymer resin, which are designated as Ln(L)4-SHIL-WR/MR (Ln = Eu, Tb, Sm; L = thenoyltrifluoroacetonate (TTA), acetylacetonate (AA), dibenzoylmethane (DBM); WR = Wang resin, MR = Merrifield resin). Among SHIL and polymer resin are assembled to form covalently bonded system through condensation reaction. Then tetrakis lanthanide beta-diketonates are linked to SHIL through ion-exchange reaction. Physical characterization and especially the photoluminescent performance of the multicomponent hybrids are studied. The hybrid materials possess good stability and excellent luminescent property. The results provide useful path to obtain luminescent hybrids for further practical application.
We firstly achieved soft hybrid materials with semiconductor sulphide (ZnS, CdS) and Eu 3+ beta-diketonates through a special multifunctional ionic liquid compound (1-methyl-3-(2-(thiocarboxyoxy)ethyl)-2H-imidazole-1,3-diium bromide (SHIL)) as chemical linkage, which are designated as MS-SHIL-Eu(L) 4 (M = Zn, Cd; L = thenoyl trifluoroacetylacetonate (TTA) and trifluoroacetylacetonate (TAA)).Here SHIL behaves as a bridge, interacting with metal sulfide through the affinity of the SH group to MS and linking tetrakis europium complexes through ion exchange. Physical characterization and especially the photoluminescent performance of the multi-component hybrids are studied. It is worth pointing out that the white luminescence integration can be realized for special composition of hybrid systems. The results provide a novel strategy to achieve white luminescence phosphor for display devices.
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