Keßler Sascha, Reinalter Elrike R, Schmidt Johannes, Cölfen Helmut
Physical Chemistry, Department of Chemistry, University of Konstanz, Universitätsstrasse 10, D-78457 Konstanz, Germany.
Department of Chemistry, Technical University of Berlin, Hardenbergstrasse 40, D-10623 Berlin, Germany.
Nanomaterials (Basel). 2021 Oct 18;11(10):2756. doi: 10.3390/nano11102756.
The tetramethylammonium hydroxide (TMAH)-controlled alkaline etching of nickel hexacyanoferrate (NiHCF) mesocrystals is explored. The alkaline etching enables the formation of hollow framework structures with an increased surface area, the exposure of active Ni and Fe sites and the retention of morphology. The ambient reaction conditions enable the establishment of a sustainable production. Our work reveals novel perspectives on the eco-friendly synthesis of hollow and colloidal superstructures for the efficient degradation of the organic contaminants rhodamine-B and bisphenol-A. In the case of peroxomonosulfate (PMS)-mediated bisphenol-A degradation, the rate constant of the etched mesoframes was 10,000 times higher indicating their significant catalytic activity.
探索了氢氧化四甲铵（TMAH）控制的六氰合铁酸镍（NiHCF）介晶的碱性蚀刻。碱性蚀刻能够形成具有更大表面积的中空框架结构，使活性镍和铁位点暴露并保持形态。环境反应条件有利于建立可持续生产。我们的工作揭示了关于中空和胶体超结构的生态友好合成以有效降解有机污染物罗丹明B和双酚A的新观点。在过一硫酸氢钾（PMS）介导的双酚A降解中，蚀刻后的介孔框架的速率常数高10000倍，表明其具有显著的催化活性。
